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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Fiscal Year Ended December 31, 2024

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to .

Commission File Number: 000-20859

GERON CORP ORATION

(Exact name of registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation or organization) | 75-2287752 (I.R.S. Employer Identification No.)
919 East Hillsdale Blvd., Suite 250, Foster City, CA (Address of principal executive offices) | 94404 (Zip Code)

Registrant’s telephone number, including area code: (650) 473-7700

Securities registered pursuant to Section 12(b) of the Act:
Title of each class: | Trading symbol(s): | Name of each exchange on which registered:
Common Stock, $0.001 par value | GERN | The Nasdaq Stock Market LLC

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well‑known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒ No ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S‑T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non‑accelerated filer, a smaller reporting company, or emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b‑2 of the Exchange Act.

Large accelerated filer |  | ☒ |  | Accelerated filer |  | ☐
Non-accelerated filer |  | ☐ |  | Smaller reporting company |  | ☐
|  |  |  | Emerging growth company |  | ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b‑2 of the Act). Yes ☐ No ☒

The aggregate market value of voting and non‑voting common equity held by non‑affiliates of the registrant was approximately $2,430,700,000 based upon the closing price of the registrant’s common stock on June 30, 2024 on the Nasdaq Global Select Market. The calculation of the aggregate market value of voting and non‑voting common equity held by non‑affiliates of the registrant excludes shares of common stock held by each officer, director and stockholder that the registrant concluded were affiliates on that date. This determination of affiliate status is not necessarily a conclusive determination for other purposes.

As of February 21, 2025, there were 636,904,470 shares of common stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE:

Document |  | Form 10‑K Parts
Portions of the Registrant’s definitive proxy statement for the 2025 annual meeting of stockholders to be filed pursuant to Regulation 14A within 120 days of the Registrant’s fiscal year ended December 31, 2024. |  | III

TABLE OF CONTENTS

|  | Page
PART I
Item 1. | Business | 6
Item 1A. | Risk Factors | 28
Item 1B. | Unresolved Staff Comments | 74
Item 1C. | Cybersecurity | 74
Item 2. | Properties | 75
Item 3. | Legal Proceedings | 75
Item 4. | Mine Safety Disclosures | 75
PART II
Item 5. | Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities | 76
Item 6. | [Reserved] | 76
Item 7. | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 77
Item 7A. | Quantitative and Qualitative Disclosures About Market Risk | 90
Item 8. | Financial Statements and Supplementary Data | 91
Item 9. | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure | 130
Item 9A. | Controls and Procedures | 130
Item 9B. | Other Information | 131
Item 9C. | Disclosure Regarding Foreign Jurisdictions that Prevent Inspections | 131
PART III
Item 10. | Directors, Executive Officers and Corporate Governance | 131
Item 11. | Executive Compensation | 132
Item 12. | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters | 132
Item 13. | Certain Relationships and Related Transactions, and Director Independence | 132
Item 14. | Principal Accountant Fees and Services | 132
PART IV
Item 15. | Exhibits and Financial Statement Schedules | 132
Item 16. | Form 10‑K Summary | 135
| SIGNATURES | 136

RYTELO® and other trademarks or service marks of Geron Corporation appearing in this Annual Report on Form 10-K (this "Report") are the property of Geron Corporation. This Report contains additional trade names, trademarks and service marks of others, which are the property of their respective owners. We do not intend our use or display of other companies’ trade names, trademarks or service marks to imply a relationship with, or endorsement or sponsorship of us by, these other companies.

In this Report, unless otherwise indicated or the context otherwise requires, “Geron,” “the registrant,” “we,” “us,” and “our” refer to Geron Corporation, a Delaware corporation, and its wholly owned subsidiaries, Geron UK Limited, a United Kingdom company, and Geron Netherlands, B.V., a Dutch company.

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Forward‑Looking Statements

This Report, including “Business” in Part I, Item 1 of this Report and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of this Report, contains forward‑looking statements that involve risks and uncertainties, as well as assumptions that, if they never materialize or prove incorrect, could cause the results of Geron Corporation, or Geron or the Company, to differ materially from those expressed or implied by such forward‑looking statements. All statements other than statements of historical fact are statements that could be deemed forward‑looking statements. In some cases, forward‑looking statements can be identified by the use of terminology such as “may,” “expects,” “plans,” “intends,” “will,” “should,” “could,” “projects,” “believes,” “predicts,” “anticipates,” “estimates,” “potential,” “seek,” or “continue” or the negative thereof or other comparable terminology. The risks and uncertainties referred to above include, without limitation, risks and uncertainties related to: (a) whether we are successful in commercializing RYTELO (imetelstat) for the treatment of certain patients with lower-risk myelodysplastic syndromes, or lower-risk MDS, with transfusion dependent anemia; (b) whether the European Commission, or EC, approves RYTELO for the treatment of patients with lower-risk MDS with transfusion dependent anemia and whether the FDA and EC will approve imetelstat for other indications on the timelines expected, or at all; (c) our plans to commercialize RYTELO in the European Union, or EU; (d) whether we overcome potential delays and other adverse impacts caused by enrollment, clinical, safety, efficacy, technical, scientific, intellectual property, manufacturing and regulatory challenges in order to have the financial resources for and meet expected timelines and planned milestones; (e) whether regulatory authorities permit the further development of imetelstat on a timely basis, or at all, without any clinical holds; (f) whether RYTELO (imetelstat) may cause, or have attributed to it, adverse events that could delay or prevent the commencement and/or completion of clinical trials, impact its regulatory approval, or limit its commercial potential; (g) whether the IMpactMF Phase 3 trial for relapsed/refractory myelofibrosis, or R/R MF, has a positive outcome and demonstrates safety and effectiveness to the satisfaction of the FDA and international regulatory authorities, and whether our projected rates for enrollment and death events differ from actual rates, which may cause the interim and final analyses to occur later than anticipated; (h) whether any future safety or efficacy results of RYTELO treatment cause its benefit-risk profile to become unacceptable; (i) whether imetelstat actually demonstrates disease-modifying activity in patients and the ability to target the malignant stem and progenitor cells of the underlying disease; (j) whether we meet our post-marketing requirements and commitments for RYTELO; (k) whether there are failures or delays in manufacturing or supplying sufficient quantities of RYTELO (imetelstat) or other clinical trial materials that impact commercialization of RYTELO or the continuation of the IMpactMF trial and other clinical trials; (l) whether we are able to establish and maintain effective sales, marketing and distribution capabilities, obtain adequate coverage and third-party payor reimbursement, and achieve adequate acceptance in the marketplace; (m) whether we are able to obtain and maintain the exclusivity terms and scopes provided by patent and patent term extensions, regulatory exclusivity, and have freedom to operate; (n) that we may be unable to successfully commercialize RYTELO due to competitive products, or otherwise; (o) that we may decide to partner and not to commercialize RYTELO independently in the United States, or U.S., or in Europe and other international markets; (p) whether we stay in compliance with and satisfy our obligations under our debt and synthetic royalty agreements; and (q) the impact of general economic, industry or political climate in the U.S. or internationally and the effects of macroeconomic conditions on our business and business prospects, financial condition and results of operations; as well as other risks that are described herein and that are otherwise described from time to time in our Securities and Exchange Commission reports including, but not limited to, the factors described in “Risk Factors,” in Part I, Item 1A of this Report. Geron assumes no obligation for and except as required by law, disclaims any obligation to update these forward‑looking statements to reflect future information, events or circumstances.

Risk Factor Summary

Below is a summary of material factors that make an investment in our common stock speculative or risky. Importantly, this summary does not address all of the risks and uncertainties that we face. You should understand that it is not possible to predict or identify all such factors. Consequently, you should not consider this summary to be a complete discussion of all potential risks or uncertainties that may substantially impact our business. Additional discussion of the risks and uncertainties summarized in this risk factor summary, as well as other risks and uncertainties that we face, can be found under “Risk Factors” in Part I, Item 1A of this Report. The summary below is qualified in its entirety by that more complete discussion of such risks and uncertainties. Moreover, we operate in a competitive and rapidly changing environment. New factors emerge from time to time and it is not possible to predict the impact of all of these factors on our business, financial condition or results of operations. You should consider carefully the risks and uncertainties described under “Risk Factors” in Part I, Item 1A of this Report as part of your evaluation of an investment in our common stock.

Risks Related to the Commercialization of RYTELO® (Imetelstat)

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Our near-term prospects are wholly dependent on RYTELO. We have limited experience with the commercialization of RYTELO, and if we are unable to successfully commercialize RYTELO in the U.S. for lower-risk MDS, or to expand its indication of use, our ability to generate meaningful revenue or achieve profitability will be materially and adversely affected.
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We have limited experience as a commercial company and our sales, marketing, and distribution of RYTELO may be unsuccessful or less successful than anticipated.
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If we are unable to continue to execute on our sales, marketing and distribution plans to commercialize RYTELO, we may be unable to generate meaningful product revenue.
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If we do not obtain acceptable prices or adequate reimbursement for RYTELO, the use of RYTELO could be severely limited.
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To be commercially successful, RYTELO must be accepted by the healthcare community, which can be slow to adopt or unreceptive to new technologies and products.
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If the market opportunities for RYTELO are smaller than we believe, our revenue may be adversely affected and our business may suffer.
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If competitors develop products, product candidates or technologies that are superior to or more cost-effective than RYTELO, it would significantly impact the development and commercial viability of RYTELO, which would severely and adversely affect our financial results, business and business prospects, and the future of RYTELO, and might cause us to cease operations.
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We rely on a select network of third party distributors, specialty pharmacies and other vendors to distribute RYTELO, and any failure by such distributors, specialty pharmacies and vendors could adversely affect our revenues, financial condition, or results of operations.
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We are seeking regulatory approval to commercialize RYTELO in the EU, and any such approval, if received, will be subject to pricing, drug marketing and reimbursement regulations in the EU, which may materially affect our ability to commercialize and receive reimbursement coverage for RYTELO in the EU.

Risks Related to Regulatory Approval of RYTELO

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We may be unable to maintain regulatory approval for RYTELO in the U.S. for lower-risk MDS, which would severely and adversely affect our business and business prospects, and might cause us to cease operations.
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Our regulatory approval for RYTELO in the U.S. for lower-risk MDS is subject to certain post-marketing requirements and commitments, and we may be subject to penalties or product withdrawal if we fail to comply with such regulatory requirements or commitments, or if we experience unanticipated problems with RYTELO.
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We may be unable to obtain regulatory approval to commercialize RYTELO in any other jurisdictions or for any new indications, or may experience significant delays in doing so, any of which could severely and adversely affect our business and business prospects, and might cause us to cease operations.

Risks Related to Compliance with Healthcare Laws

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The FDA, the Department of Justice, or DOJ, and other regulatory authorities actively enforce regulations related to the promotion and advertisement of pharmaceutical products, and if we were found to have violated the Food, Drug and Cosmetic Act, we could be subject to significant penalties, including civil, criminal and administrative penalties.

Risks Related to the Further Development of RYTELO (Imetelstat)

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We cannot be certain that we will be able to continue to develop RYTELO or advance it in clinical trials, or that we will be able to receive regulatory approval for RYTELO in any other indications in the U.S., the EU, or any other region, on a timely basis or at all.

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RYTELO may cause, or have attributed to it, undesirable or unintended side effects or other adverse events that could halt or limit its further commercialization, delay or prevent its regulatory approval in any other jurisdiction or indication, or cause us to delay or terminate our clinical trials.
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Results and data we disclosed from prior non-clinical studies and clinical trials may not predict success in later clinical trials, and we cannot assure you that any ongoing or future clinical trials of imetelstat, including IMpactMF, will lead to similar results and data that could potentially enable us to obtain any further regulatory approvals.

Risks Related to Manufacturing RYTELO (Imetelstat)

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Failure by us to maintain a manufacturing supply chain to appropriately and adequately supply RYTELO for commercial and future clinical uses would adversely affect our ability to commercialize RYTELO and result in a further delay in or cessation of clinical trials, and our business and business prospects could be severely harmed.
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If third parties that manufacture RYTELO fail to perform as needed, the commercial and clinical supply of RYTELO could be interrupted or limited, and we may be unable to successfully commercialize RYTELO or conduct or complete current or potential future clinical trials.

Risks Related to Our Operating Results, Financial Position and Need for Additional Capital

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We have a history of net losses and may not achieve consistent future profitability for some time, if ever.
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Our operating results are unpredictable and may fluctuate. If our operating results are below the expectations of securities analysts or investors, the trading price of our common stock could decline.
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Our failure to obtain additional capital if and when needed would force us to further delay, reduce or eliminate the further development of imetelstat, or to halt the commercialization of RYTELO, any of which would severely and adversely affect our financial results, business and business prospects, and might cause us to cease operations.

Risks Related to Our Indebtedness and Liabilities

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Our level of indebtedness and debt service obligations could adversely affect our financial condition, and may make it more difficult for us to fund our operations.

Risks Related to Protecting Our Intellectual Property

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If we are unable to obtain and maintain sufficient intellectual property protection and relevant regulatory exclusivities for RYTELO, our competitors could develop and commercialize products similar or identical to RYTELO, and our ability to successfully commercialize RYTELO may be adversely affected.
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Obtaining and maintaining our patent rights depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for noncompliance with these requirements.
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Patent terms may be inadequate to protect our competitive position on RYTELO for an adequate amount of time.
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The validity, scope and enforceability of any patents listed in the Orange Book that cover RYTELO or its methods of use can be challenged by third parties and may not protect us from generic or innovator competition.

Risks Related to Our Common Stock and Financial Reporting

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Historically, our stock price has been extremely volatile, and your investment may suffer a decline in value.

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Calculation of Aggregate Market Value of Non‑Affiliate Shares

For purposes of calculating the aggregate market value of shares of our common stock held by non‑affiliates as set forth on the cover page of this Report, we have assumed that all outstanding shares are held by non‑affiliates, except for shares held directly or indirectly by each of our executive officers and directors. In the case of 5% or greater stockholders, we have not deemed any such stockholders to be affiliates given the lack of facts and circumstances that would indicate that any such stockholders exercise, or have the ability to exercise, any control over Geron. These assumptions should not be deemed to constitute an admission that all executive officers and directors are, in fact, affiliates of Geron, or that there are no other persons who may be deemed to be affiliates of Geron. Further information concerning shareholdings of our executive officers, directors and principal stockholders is incorporated by reference in Part III, Item 12 of this Report.

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PART I

ITEM 1. BUSINESS

Company Overview

We are a commercial-stage biopharmaceutical company aiming to change lives by changing the course of blood cancer. Our first-in-class telomerase inhibitor, RYTELO® (imetelstat), harnesses Nobel Prize winning science in a treatment that scientific evidence suggests reduces proliferation of malignant cells, allowing production of new healthy cells, which we believe drives differentiated clinical benefits, potentially altering the underlying course and modifying the disease of these hematologic malignancies.

We commercially launched RYTELO in the U.S. in June 2024 following its approval by the U.S. Food and Drug Administration, or FDA, on June 6, 2024 for the treatment of adult patients with low- to intermediate-1 risk myelodysplastic syndromes, or lower-risk MDS, with transfusion-dependent, or TD, anemia requiring four or more red blood cell units over eight weeks who have not responded to or have lost response to or are ineligible for erythropoiesis-stimulating agents, or ESAs. Lower-risk MDS is a progressive blood cancer with high unmet need, where many patients with anemia become dependent on red blood cell transfusions, which can be associated with clinical consequences and decreased quality of life. We believe that the uptake of RYTELO since launch is supported by the high unmet need in lower-risk MDS and significant product differentiation, including observed benefit of RYTELO in difficult-to-treat sub-populations such as patients with high transfusion burden and ring sideroblast negative, or RS- patients. We believe that the favorable FDA label and National Comprehensive Cancer Network, or NCCN®, Clinical Practice Guidelines in Oncology, or NCCN Guidelines®, position RYTELO as a potential blockbuster treatment that can compete for significant market segments in lower-risk MDS, including first-line ESA ineligible patients and second-line patients regardless of prior treatment or RS status.

In September 2023, we submitted a marketing authorization application, or MAA, in the European Union, or EU, that was validated for review by the European Medicines Agency, or EMA, for RYTELO for the same proposed indication as in the U.S., and in December 2024, the Committee for Medicinal Products for Human Use, or CHMP, of the EMA adopted a positive opinion recommending the approval of RYTELO for the treatment of adult patients with TD anemia due to very low, low or intermediate risk myelodysplastic syndromes without an isolated deletion 5q cytogenetic, or non-del 5q, abnormality and who had an unsatisfactory response to or are ineligible for erythropoietin-based therapy. The European Commission, or EC, is reviewing the CHMP's recommendation, and we expect a potential approval decision by the EC in the first half of 2025. We are preparing for the potential commercialization of RYTELO in select EU countries in 2026, subject to regulatory approval, which could include working with experienced third parties who can provide contracted services, including essential critical path activities such as reimbursement, Health Technology Assessment, or HTA, submissions, market access and distribution.

In addition to lower-risk MDS, we are developing imetelstat for the treatment of other myeloid hematologic malignancies. Our Phase 3 IMpactMF clinical trial is evaluating imetelstat in patients with intermediate-2 or high-risk myelofibrosis, or MF, who have relapsed after or are refractory to treatment with a janus associate kinase inhibitor, or JAK inhibitor, or relapsed/refractory MF, or R/R MF, with overall survival, or OS, as the primary endpoint. As of February 2025, the trial reached approximately 80% enrollment. Based on our current planning assumptions for enrollment and event (death) rates in the trial, we expect the interim analysis for OS in IMpactMF may occur in the second half of 2026 and the final analysis may occur in the second half of 2028.

We believe that telomerase inhibition with imetelstat represents a novel mechanism of action with unique benefits in hematologic malignancies and potentially in other tumor types.

Our Strategy

Our strategy is to maximize the value of our first-in-class telomerase inhibitor, RYTELO (imetelstat). This includes maximizing the commercial opportunity for RYTELO in lower-risk MDS by investing in and executing on our U.S. commercial launch. We expect to deliver steady growth by executing across several key imperatives, including driving new patient starts across all eligible lower-risk MDS population segments, particularly in second-line lower-risk MDS; reinforcing with health care providers, or HCPs, the value of duration of treatment we have

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observed with RYTELO; educating HCPs on appropriate management of patient safety with RYTELO; and leveraging strong payor access for RYTELO.

We also plan to progress our development programs that could help identify potential additional indications for imetelstat. This includes continuing to enroll the Phase 3 IMpactMF trial, which, if positive and approved in label expansion, could significantly increase the RYTELO commercial opportunity. Additionally, we plan to execute on our pipeline programs and assess the data to understand the potential to develop imetelstat in additional hematologic malignancies and as a potential combination therapy.

U.S. Commercialization of RYTELO

RYTELO is the first and only FDA approved telomerase inhibitor. The FDA label indicates that RYTELO is approved for certain ESA ineligible or ESA relapsed/refractory lower-risk MDS patients, regardless of RS status. In August 2024, the MDS NCCN Guidelines® were updated to include imetelstat as a Category 1 treatment in second-line RS+/RS- patients regardless of prior treatment and as a Category 2A treatment for first-line ESA-ineligible RS+/RS- patients.

We believe that lower-risk MDS represents a significant market opportunity with blockbuster potential for RYTELO in this indication. We estimate there are approximately 15,400 treatment-eligible lower-risk MDS patients consistent with the FDA label in 2025, based on IQVIA projected claims and Clarivate/Decision Resources Group, or DRG, incidence data. This is comprised of approximately 3,400 first-line ESA ineligible patients, approximately 7,600 second-line ESA relapsed/refractory patients (approximately 5,700 RS- and 1,900 RS+, respectively), and approximately 4,400 third-line plus ESA relapsed/refractory patients (approximately 3,300 RS- and 1,100 RS+, respectively). We estimate that approximately 45% of first-line patients will progress to second-line treatment and approximately 59% of second-line patients will progress to third-line treatment in 2025.

To support this significant market opportunity, our commercial team includes 50 key account managers, oncology clinical educators, and field reimbursement and national account teams, along with our medical affairs field team. We offer a wide range of resources to support access and affordability for eligible RYTELO patients, including our Reach for RYTELO™ patient support program, which provides a range of resources which are designed to support access and affordability to eligible patients prescribed RYTELO.

Commercialization Plans for RYTELO in the EU

Subject to receiving regulatory approval, our goal in the EU is to optimize patient access and revenues for RYTELO in prioritized countries. We are preparing to commercialize RYTELO in select EU countries in 2026, which could include working with experienced third parties who can provide contracted services, including essential critical path activities such as reimbursement, HTA submissions, market access and distribution.

Background of Telomerase Inhibition in Hematologic Malignancies and Imetelstat Development

In the human body, normal growth and maintenance of tissues occurs by cell division. However, most cells are only able to divide a limited number of times, and this number of divisions is regulated by telomere length. Telomeres are repetitions of a deoxyribonucleic acid, or DNA, sequence located at the ends of chromosomes. They act as protective caps to maintain stability and integrity of the chromosomes, which contain the cell’s genetic material. Normally, every time a cell divides, the telomeres shorten. Eventually, they shrink to a critically short length, and as a result, the cell either dies by apoptosis or stops dividing and senesces.

Telomerase is a naturally occurring enzyme that maintains telomeres and prevents them from shortening during cell division, such as stem cells that must remain immortalized to support normal health. Telomerase consists of at least two essential components: a ribonucleic acid, or RNA, template, which binds to the telomere, and a catalytic subunit with reverse transcriptase activity, which adds a specific DNA sequence to the chromosome ends. The 2009 Nobel Prize for Physiology or Medicine was awarded to Drs. Elizabeth H. Blackburn, Carol W. Greider and Jack Szostak, former Geron collaborators, for the discovery of how chromosomes are protected by both telomeres and telomerase.

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Telomerase is upregulated in many tumor cells and malignant stem and progenitor cells, enabling the continued and uncontrolled proliferation of the malignant cells that drive tumor growth and progression. We believe that inhibiting telomerase may be an attractive approach to treating cancer because it may limit the proliferative capacity of malignant stem and progenitor cells, which are believed to be important drivers of tumor growth and progression. We and others have observed in various in vitro, ex vivo and rodent tumor models that inhibiting telomerase: (a) results in telomere shortening and (b) arrests uncontrolled malignant cell proliferation and tumor growth.

Many myeloid hematologic malignancies, such as essential thrombocythemia, or ET, MF and MDS, have been shown to arise from malignant stem and progenitor cells that express higher telomerase activity and have shorter telomeres when compared to normal healthy cells. In vitro studies have suggested that tumor cells with short telomeres may be especially sensitive to the anti‑proliferative effects of inhibiting telomerase.

Imetelstat, our proprietary telomerase inhibitor which was discovered and developed at Geron, was designed to inhibit telomerase in malignant cells with continuously upregulated telomerase.

Imetelstat is a lipid conjugated 13‑mer oligonucleotide that we designed to be complementary to and bind with high affinity to the RNA template of telomerase, thereby directly inhibiting telomerase activity. Imetelstat does not act as an antisense inhibitor of protein translation. The compound has a proprietary thio‑phosphoramidate backbone, which is designed to provide resistance to the effect of cellular nucleases, thus conferring improved stability in plasma and tissues, as well as improved binding affinity to its target. To improve the ability of imetelstat to penetrate cellular membranes, we conjugated the oligonucleotide to a lipid group. Imetelstat’s IC50, or half maximal inhibitory concentration, is 3 – 9 nM in cell free assays.

We believe that imetelstat may have the potential to suppress the proliferation of malignant stem and progenitor cells while transiently affecting normal cells. Early clinical data from a Phase 2 trial of imetelstat in patients with ET, or the ET Trial, and a pilot study of imetelstat in patients with MF conducted at Mayo Clinic, or the Pilot Study, suggested that imetelstat inhibits the progenitor cells of the malignant clones believed to be responsible for the underlying diseases in a relatively select manner, indicating potential disease-modifying activity. These data were published in two separate articles in a September 2015 issue of The New England Journal of Medicine. In the Phase 2 IMbark study, an association of survival improvement and reduction in variant allele frequency, or VAF, was observed for high-risk imetelstat-treated MF patients, results which were published in Journal of Clinical Oncology in 2021. Additionally, in the Phase 2/3 IMerge study, SF3B1 VAF reduction was associated with longest transfusion independence, or TI, and with 8-week, 24-week and 1-year TI duration in imetelstat-treated lower-risk MDS patients. These results were published in The Lancet and at the European Hematology Association, or EHA, annual meeting in 2023.

Pipeline Chart

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Lower-Risk Myelodysplastic Syndromes (MDS)

MDS is a group of blood disorders in which the proliferation of malignant progenitor cells produces multiple malignant cell clones in the bone marrow resulting in disordered and ineffective production of the myeloid lineage, which includes red blood cells, white blood cells and platelets. In MDS, bone marrow and peripheral blood cells may have abnormal, or dysplastic, cell morphology. MDS is frequently characterized clinically by severe anemia, or low red blood cell counts, and low hemoglobin. In addition, other peripheral cytopenias, or low numbers of white blood cells and platelets, may cause life‑threatening infections and bleeding. Transformation to acute myeloid leukemia, or AML, is reported to occur in up to 30% of MDS cases and results in poorer overall survival.

MDS is the most common of the myeloid malignancies. There are approximately 60,000 people in the U.S. living with the disease and approximately 16,000 reported new cases of MDS in the U.S. every year, according to Clarivate/DRG MDS Syndicated Report 2020, 2021, 2022. We believe that there are approximately 15,400 lower-risk MDS patients in the U.S. in 2025 that are eligible for treatment with RYTELO based on its approved FDA label, based on IQVIA projected claims and Clarivate/DRG incidence data. MDS is primarily a disease of the elderly, with median age at diagnosis around 70 years. The majority of patients, approximately 70%, fall into what are considered to be the lower-risk groups at diagnosis, according to the International Prognostic Scoring System, or IPSS, which assigns relative risk of progression to AML and overall survival by taking into account the presence of a number of disease factors, such as cytopenias and cytogenetics.

Chronic anemia is the predominant clinical problem in patients who have lower-risk MDS. Typically, these patients are treated with ESAs, such as erythropoietin, or EPO. Although ESAs provide an improvement in anemia in approximately 50% of patients, the effect is transient with a median duration of response of approximately two years. Once ESAs fail for patients, HMAs and lenalidomide have been used to improve anemia, but with limited success, such as reported ≥ 8-week red blood cell, or RBC, transfusion independence, or RBC-TI, rates of 17% for azacitidine, an HMA, and 27% for lenalidomide in non-del 5q lower-risk MDS patients. In August 2023, Reblozyl, or luspatercept, was approved for the treatment of anemia in adult patients with very low-to-intermediate-risk MDS without previous erythropoiesis stimulating agent use, or ESA-naive, who may require regular RBC transfusions. In April 2020, luspatercept was approved for use in ESA-failed lower-risk MDS patients with ringed sideroblasts. Such patients comprise approximately 15% to 30% of all lower-risk MDS patients. The majority of patients who do not have ringed sideroblasts or who no longer respond to ESAs or other available drug therapies become dependent on red blood cell transfusions due to low hemoglobin. Serial red blood cell transfusions can lead to elevated levels of iron in the blood and other tissues, which the body has no normal way to eliminate. Iron overload is a potentially dangerous condition. Published studies in patients with MDS have shown that iron overload resulting from regular red blood cell transfusions is associated with a poorer overall survival and a higher risk of developing AML.

Phase 3 IMerge Trial in Lower-Risk MDS

Our regulatory approval in the U.S. for certain patients with lower-risk MDS and our EMA submission are each based on positive data from the IMerge Phase 3 clinical trial. The trial met its primary endpoint of ≥ 8-week red blood cell transfusion independence rate and a key secondary endpoint of ≥ 24-week red blood cell transfusion independence rate, demonstrating highly statistically significant (i.e., p<0.001 for both) and clinically meaningful benefits with imetelstat treatment versus placebo. Furthermore, statistically significant and clinically meaningful efficacy results were observed in the trial across key MDS patient subtypes, including patients who were ringed sideroblast positive, or RS positive, and ringed sideroblast negative, or RS negative; patients with high (4-6 RBC units/8 weeks) and very high baseline transfusion burden (>6 RBC units/8 weeks); and patients classified as Low or Intermediate-1 risk according to the IPSS. The most common Grade 3/4 adverse reactions were neutropenia (72%) and thrombocytopenia (65%), which lasted a median duration of less than two weeks, and in more than 80% of patients were resolved to Grade <2 in under four weeks.

Myelofibrosis (MF)

MF, a type of myeloproliferative neoplasm, is a chronic blood cancer in which abnormal or malignant precursor cells in the bone marrow proliferate rapidly, causing scar tissue, or fibrosis, to form. As a result, normal blood production in the bone marrow is impaired and may shift to other organs, such as the spleen and liver, which can cause them to enlarge substantially. People with MF may have abnormally low or high numbers of circulating RBCs, white blood cells or platelets, and abnormally high numbers of immature cells in the blood or bone marrow. MF patients can also suffer from debilitating constitutional symptoms, such as drenching night sweats, fatigue, severe itching, or pruritus, abdominal pain, fever and bone pain. There are estimated to be approximately 12,000 patients living with MF in the U.S., of which an estimated approximately 10,000 patients are expected to be

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relapsed/refractory to JAK inhibitors in 2028 and potentially eligible for treatment with imetelstat if it is approved in that indication, according to IQVIA claims data and a DRG 2022 report.

Approximately 70% of MF patients are classified as having Intermediate‑2 or High-risk disease, as defined by the Dynamic International Prognostic Scoring System Plus described in a 2011 Journal of Clinical Oncology article. Drug therapies currently approved by the FDA and other regulatory authorities for treating these MF patients include JAK inhibitors, ruxolitinib, fedratinib and momelotinib, as well as pacritinib, a kinase inhibitor. Currently, no drug therapy is approved for those patients who fail or no longer respond to JAK inhibitor treatment, and median survival for MF patients after discontinuation from ruxolitinib is only approximately 14–16 months, representing a significant unmet medical need.

Ongoing Phase 3 IMpactMF Trial in Relapsed/Refractory MF

Trial Design

IMpactMF, our Phase 3 clinical trial in relapsed/refractory MF, is an open label, 2:1 randomized, controlled clinical trial designed to evaluate imetelstat (9.4 mg/kg administered by intravenous infusion over two hours every three weeks) in approximately 320 patients. Patients relapsed after or refractory to a JAK inhibitor are defined as having an inadequate spleen response or symptom response after treatment with a JAK inhibitor for at least six months, including an optimal dose of a JAK inhibitor for at least two months. The best available therapy, or BAT, control arm of IMpactMF excludes the use of JAK inhibitors. With respect to the trial design for IMpactMF, the FDA urged us to consider adding a third dosing arm to assess a lower dose and/or a more frequent dosing schedule that might improve the planned trial’s chance of success by identifying a less toxic regimen and/or more effective spleen response, one of the trial’s secondary endpoints. Based on data from IMbark, we believe that testing a lower dose regimen would likely result in a lower median OS, which is the trial’s primary endpoint, in the imetelstat treatment arm. We believe existing data also suggest that lowering the dose would not result in a clinically meaningful reduction in toxicity. For these reasons, we therefore determined not to add a third dosing arm to the trial design, and the FDA did not object to our proposed imetelstat dose and schedule of 9.4 mg/kg every three weeks. Our belief may ultimately be incorrect. Therefore, our failure to add a third dosing arm could result in a failure to maintain regulatory clearance from the FDA and similar international regulatory authorities, could result in the trial’s failure, or could otherwise delay, limit or prevent marketing approval of imetelstat for relapsed/refractory MF by the FDA or similar international regulatory authorities.

The primary efficacy endpoint for IMpactMF is OS. Key secondary endpoints include symptom response; spleen response; progression free survival; complete remission, partial remission or clinical improvement, as defined by the International Working Group for Myeloproliferative Neoplasms Research and Treatment criteria; duration of response; safety; pharmacokinetics; and patient reported outcomes. There are IMpactMF sites across North America, South America, Europe, Australia and Asia.

IMpactMF is designed with >85% power to detect a 40% reduction in the risk of death (hazard ratio=0.60; one-sided alpha=0.025). The final analysis for OS is planned to be conducted after more than 50% of the patients planned to be enrolled in the trial have died (referred to as an event). An interim analysis of OS, in which the alpha spend is expected to be approximately 0.01, is planned to be conducted after approximately 70% of the total projected number of events (deaths) for the final analysis have occurred.

Current Status of IMpactMF

IMpactMF opened for patient screening and enrollment in December 2020. As of February 2025, the trial was approximately 80% enrolled. Based on our planning assumptions for enrollment and event (death) rates in the trial, we expect the interim analysis for OS in IMpactMF may occur in the second half of 2026 and the final analysis may occur in the second half of 2028. Because these analyses are event-driven and it is uncertain whether actual rates for enrollment and events will reflect current planning assumptions, the results may be available at different times than currently expected. At the interim analysis, if the pre-specified statistical OS criterion is met, then we expect such data may potentially support the registration of imetelstat in relapsed/refractory MF. Subject to protocol-specified stopping rules for futility, if the pre-specified OS criterion is not met at the interim analysis, the trial will continue to the final analysis, which is expected to occur approximately one year later.

The timing and achievement of either or both of the planned analyses depend on numerous factors, including enrollment rates and blinded death rates, which have in the past been, and may continue to be, lower than our projections. In addition, our ability to enroll, conduct and complete IMpactMF depends on whether we can obtain and maintain the relevant clearances from regulatory authorities and other institutions to enroll, conduct and complete the trial.

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Improvement in Overall Survival and Potential Disease-Modifying Activity Observed in IMbark Phase 2

The IMbark Phase 2 clinical trial was designed to evaluate two dosing regimens of imetelstat (either 4.7 mg/kg or 9.4 mg/kg administered by intravenous infusion every three weeks) in patients with relapsed/refractory MF.

We previously reported efficacy and safety results from the IMbark Phase 2 clinical trial, including median OS of 28.1 months for patients on the high dose arm of the study, which is almost twice the reported median OS of 14–16 months in medical literature. To evaluate this potential benefit, we conducted a post-hoc analysis of OS for patients treated with imetelstat 9.4 mg/kg in IMbark compared to OS calculated from real world data, or RWD, collected at the Moffitt Cancer Center for patients who had discontinued treatment with ruxolitinib, a JAK inhibitor, and who were subsequently treated with BAT. To make a comparison between the IMbark data and RWD, a cohort from the real-world dataset was identified that closely matched the IMbark patients, using guidelines for inclusion and exclusion criteria as defined in the IMbark clinical protocol, such as platelet count and spleen size. Calculations from two propensity score analysis approaches resulted in a median OS of 30.7 months for the imetelstat-treated patients from IMbark, which is more than double the median OS of 12.0 months using RWD for patients treated with BAT. These analyses also showed a 65% – 67% lower risk of death for the imetelstat-treated patients vs. BAT-treated patients. We believe these analyses suggest potentially longer OS for imetelstat-treated relapsed/refractory MF patients in IMbark, compared to BAT in closely-matched patients from RWD. However, comparative analyses between RWD and our clinical trial data have several limitations. For instance, the analyses create a balance between treatment groups with respect to commonly available covariates, but do not take into account the unmeasured and unknown covariates that may affect the outcomes of the analyses. Potential biases are introduced by factors which include, for example, the selection of the patients included in the analyses, misclassification in the matching process, the small sample size, and estimates that may not represent the outcomes for the true treated patient population. For these and other reasons, such comparative analyses and any conclusions from such analyses should be considered carefully and with caution, and should not be relied upon as demonstrative or otherwise predictive or indicative of any current or potential future clinical trial results of imetelstat in relapsed/refractory MF, including IMpactMF.

In IMbark, patients also experienced other positive clinical outcomes, including symptom improvement, spleen reduction and bone marrow fibrosis improvement. In June 2020, we reported correlation analyses from IMbark that showed a trend of longer OS in patients who achieved symptom response, spleen volume reductions and improved bone marrow fibrosis, in a dose-dependent manner. Furthermore, the reductions in the variant allele frequency of key driver mutations in MF and the improvement in bone marrow fibrosis observed in IMbark have also been correlated to the improvement in OS. We believe the improvement in bone marrow fibrosis, potential survival benefit, molecular data and correlations from IMbark provide strong evidence of the potential for disease modification with imetelstat, which we believe would differentiate imetelstat from currently approved treatments for MF, if approved.

The safety results observed in IMbark were consistent with prior clinical trials of imetelstat in hematologic malignancies, and no new safety signals were identified. In the 9.4 mg/kg arm, reversible and manageable Grade 3/4 thrombocytopenia and neutropenia were reported in 24/59 patients (41%) and 19/59 patients (32%), respectively, without significant clinical consequences. 1/59 patients (2%) had Grade 3 febrile neutropenia. 3/59 patients (5%) had Grade 3/4 bleeding. 6/59 patients (10%) had Grade 3/4 infections. Furthermore, more than 70% of the observed Grade 3/4 cytopenias resolved to Grade 2 or lower by laboratory assessment within four weeks.

FDA Fast Track Designation

Fast Track designation provides opportunities for frequent interactions with FDA review staff, as well as eligibility for priority review, if relevant criteria are met, and rolling review. Fast Track designation is intended to facilitate and expedite development and review of an NDA to address unmet medical needs in the treatment of serious or life-threatening conditions. However, Fast Track designation does not accelerate conduct of clinical trials or mean that the regulatory requirements are less stringent, nor does it ensure that imetelstat will receive marketing approval or that approval will be granted within any particular timeframe. In addition, the FDA may withdraw Fast Track designation if it believes that the designation is no longer supported by data emerging from the imetelstat clinical development program.

In October 2017, the FDA granted Fast Track designation to imetelstat for the treatment of adult patients with TD anemia due to lower-risk MDS who do not have a non-del 5q abnormality and who are refractory or resistant to treatment with an ESA (i.e., the treatment population in IMerge Phase 3).

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In September 2019, the FDA granted Fast Track designation to imetelstat for the treatment of adult patients with Intermediate-2 or High-Risk MF whose disease has relapsed after or is refractory to JAK inhibitor treatment (i.e., the treatment population in IMpactMF).

Potential Additional Indications

IMproveMF: Phase 1 Combination Clinical Trial in Frontline Myelofibrosis (Frontline MF)

We are also evaluating imetelstat as a combination therapy in the Phase 1 IMproveMF clinical trial as a first-line treatment for patients with Intermediate-1, Intermediate-2 or High-Risk myelofibrosis. Based on the dose escalation findings in Part 1 of the study, presented at the American Society of Hematology, or ASH, annual meeting in December 2024, imetelstat 9.4 mg/kg dosed every four weeks with ruxolitinib was the selected dose for the dose expansion Part 2 of the study, which is currently enrolling patients.

IMpress: Investigator-Led Phase 2 Clinical Trial in Higher Risk Myelodysplastic Syndromes (Higher Risk MDS) and Acute Myeloid Leukemia (AML)

Imetelstat is also being studied in an investigator-led IMpress Phase 2 clinical trial in Intermediate-2 or High-Risk myelodysplastic syndromes, or higher-risk MDS, and acute myeloid leukemia, or AML, patients that are relapsed or refractory to hypomethylating agent, or HMA, treatment. Based on observations from an interim analysis from the first cohort, presented at ASH in December 2024, the protocol was amended to a more frequent dosing schedule for a second cohort of patients being enrolled and treated with this modified schedule as of August 2024.

In addition, pending the results of IMpress, we plan to support a Phase 1/2 investigator-led study, called TELOMERE, in relapsed/refractory AML, using a combination approach of imetelstat and venetoclax or azacitidine.

Research Programs

Next Generation Telomerase Inhibitor Discovery

We have initiated a discovery program to identify lead compounds as a potential next generation oral telomerase inhibitor. If the leads we have identified are optimized, we may conduct preclinical experiments that may serve as a basis for potential future clinical testing. Discovery research is an uncertain and unpredictable process. As such, the timing and nature of any results from this discovery effort are difficult to forecast. If we optimize lead compounds from this discovery program, we expect to provide an update on our efforts at that time.

Preclinical Lymphoid Hematologic Malignancies

Academic research data suggests that certain lymphoid hematologic malignancies have higher telomerase activity and shorter telomeres when compared to normal healthy cells. Based on this scientific hypothesis, we conducted a preclinical research project with MD Anderson Cancer Center to determine the potential application of imetelstat in lymphoid hematologic malignancies. The project was completed, and preliminary results of the research project were published in Blood in November 2022. Exploring the utility of imetelstat in lymphoid hematologic malignancies remains an area of interest for us.

Intellectual Property and Regulatory Exclusivity

Intellectual property, including patent protection, is very important to our business. We file patent applications in the U.S. and other jurisdictions, and we also rely on trade secret protection and contractual arrangements to protect aspects of our business. An enforceable patent with appropriate claim coverage can provide an advantage over competitors who may seek to employ similar approaches to develop therapeutics, and so the future commercial success of RYTELO (imetelstat), and therefore our future success, will be in part dependent on our intellectual property strategy.

Our intellectual property strategy includes the early development of a technology, such as imetelstat, followed by rounds of increasingly focused innovation around a product opportunity, including identification and definition of a specific product candidate and uses thereof, manufacturing processes, product formulation and methods of treatment and administration. The result of this process is that products in development are often protected by several families of patent filings that are filed at different times during the development process and cover different aspects of the product. Consequently, earlier filed, broad technology patents will usually expire ahead of patents covering later developments, such as product formulations and methods of treatment and administration, so that

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patent expirations on a product may span several years. Patent coverage may also vary from country to country based on the scope of available patent protection. There are also opportunities to obtain an extension of patent coverage for a product in certain countries, which adds further complexity to the determination of patent life.

From time to time, we may endeavor to monitor worldwide patent filings by third parties that are relevant to our business. Based on this monitoring, we may determine that an action is appropriate to protect our business interests. Such actions may include negotiating patent licenses where appropriate, filing oppositions against a patent, filing a request for post grant review against a patent or filing a request for the declaration of an interference with a patent application or issued patent.

The information provided in this section should be reviewed in the context of the section entitled “Risks Related to Protecting Our Intellectual Property” described in “Risk Factors” in Part I, Item 1A of this Report.

RYTELO (imetelstat)

Summary

RYTELO was developed internally by us, and we hold global commercial rights to it. We own issued patents related to RYTELO in the U.S., Europe and other countries. Although composition of matter patents generally provide the most comprehensive coverage of a therapeutic product such as RYTELO, subsequent patent filings directed to other aspects of RYTELO may also provide additional patent coverage with later expiration dates. In addition, it may be possible to obtain patent term extensions of some patents in some countries for claims covering RYTELO or relating to RYTELO, such as methods of treatment with RYTELO, which could further extend the patent term.

We have issued patents in the U.S., Europe and other countries that provide patent coverage into 2033 (not including any patent term extension) pertaining to the treatment of MDS and MF with RYTELO.

In the U.S., our method of treatment patent rights for MDS and MF expire in March 2033 (not including any patent term extension). We also hold an issued patent in the U.S. covering the composition of matter of RYTELO (imetelstat) that expires in December 2025. Now that we have received approval for RYTELO in the U.S., we have applied for patent term extensions under the provisions of the Drug Price Competition and Patent Term Restoration Act of 1984 (as amended), or the Hatch-Waxman Act, which, if granted, would extend the patent term of either our method of treatment patent for MDS and MF or our composition of matter patent by up to five years.

In Europe and other countries, our patent rights for use in MDS and MF expire in November 2033 (not including any patent term extension). Our composition of matter patent coverage expired in September 2024. Subject to receiving approval for RYTELO from the EC, we plan to seek patent term extension under a Supplementary Protection Certificate, or SPC, as permitted under European Council (EC) Regulation No. 469/2009, or the European SPC Regulation, of one of our use patents, such as our patent for use in MDS, in the European Economic Area, or the EEA, which could extend the patent term by up to five years.

In the U.S., Europe, and other countries, we are also pursuing other patent rights relating to RYTELO (imetelstat), such as methods of treatment of MDS in specific patient subpopulations, reagents useful in the manufacturing processes for the drug, and other methods of treatment and kit claims, certain of which are co‑owned with other entities.

Patent Term Extension

Although we are in the process of seeking patent term extension for some of our issued patents covering RYTELO, it is not possible to obtain patent term extension of any patents that expired prior to or are issued following regulatory approval. For the patents for which we are seeking a patent term extension, we may not be granted any such patent term extension and/or the applicable time period of such patent term extension could be less than we have projected. Moreover, in some countries, including the U.S., such patent term extensions, if any, are limited to those claims which encompass the product composition and treatment indications as approved by the relevant healthcare regulatory authority. During the life of the patent term extension, however, its scope of protection will expand to include any additional indications subsequently approved for the product and claimed by the patent. Furthermore, some jurisdictions, including the U.S., allow the filing of patent term extension applications on multiple patents, but ultimately the patent owner must select one patent to which the extension is applied.

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In the U.S., now that we have received approval for RYTELO in certain patients with lower-risk MDS, we may potentially extend the term of our composition of matter patent in the U.S. for a maximum of five years until December 2030, subject to U.S. Patent and Trademark Office, or USPTO, approval. Alternatively, we may potentially extend the term of our method of treatment for MDS claims in the U.S. until August 2037, subject to USPTO approval. As we have previously disclosed, we expect to apply patent term extension, if granted, to our method of treatment patent, since doing so provides a longer patent term. However, if we do not receive a patent term extension for our U.S. method of treatment patent for MDS, it will expire in March 2033. Once our composition of matter patent expires in the U.S., we must rely on our method of treatment patent and other patents and regulatory exclusivity for RYTELO in the U.S.

Similarly, in Europe, subject to receiving approval from the EC for RYTELO in certain patients with lower-risk MDS, we plan to seek to potentially extend the term of our patents in the EEA for the use of RYTELO in MDS for a maximum of five years, from November 2033 until November 2038, subject to European Patent Office approval. Since our European composition of matter patents expired in September 2024, we must rely on our use and other patents and, subject to receiving approval from the EC, regulatory exclusivity for RYTELO in the EEA.

If we do not have sufficient patent life and regulatory exclusivity to protect RYTELO in the U.S. and EU, our financial results, business and business prospects, and future development of imetelstat could be materially and adversely affected, which might cause us to cease operations.

Orphan Drug Designation and Market Exclusivity

United States

For a drug to qualify for orphan drug designation by the FDA, both the drug and the disease or condition must meet certain criteria specified in the Orphan Drug Act, or ODA, and FDA’s implementing regulations. Orphan drug designation is granted by the FDA’s Office of Orphan Drug Products in order to support development of medicines for rare diseases or conditions, which generally are those that affect fewer than 200,000 people in the U.S. or, if the disease or condition affects more than 200,000 individuals annually in the U.S., if there is no reasonable expectation that the cost of developing and making the drug would be recovered from sales in the U.S. Orphan drug designation qualifies the sponsor of the drug for various development incentives under the ODA, including certain tax credits for qualified clinical testing and exemption from user fees. A drug granted approval for an orphan designated indication generally receives seven years of market exclusivity, during which time the FDA generally may not approve any other application for the same product for the same use, with certain limited exceptions, most notably when the later product is shown to be clinically superior to the product with exclusivity. Orphan drug exclusivity does not prevent the FDA from approving a different drug for the same disease or condition, or the same drug for a different disease or condition. The FDA can revoke a product’s orphan drug exclusivity under certain circumstances, including when the product sponsor is unable to assure the availability of sufficient quantities of the product to meet patient needs.

A marketing application for a prescription drug product that has received orphan drug designation is not subject to a prescription drug user fee unless the application includes an indication for a disease or condition other than the rare disease or condition for which the drug was granted orphan drug designation. The granting of orphan drug designation does not alter the standard regulatory requirements and process for obtaining marketing approval. The safety and effectiveness of a drug product must be established through adequate and well‑controlled studies. Orphan drug exclusivity does not prevent the FDA from approving a drug product containing a different active moiety for the same disease or condition, or a drug product containing the same active moiety for a different disease or condition , and also imposes certain requirements on manufacturers, such as the availability of drug supply, in order to maintain orphan drug exclusivity.

In June 2015 and December 2015, the FDA granted orphan drug designation to imetelstat for the treatment of MF and MDS, respectively, and following approval of RYTELO in June 2024, the FDA listed in its Approved Drug Products with Therapeutic Equivalence Evaluations, commonly known as the Orange Book, that RYTELO has orphan drug exclusivity, which is expected to provide orphan drug exclusivity until June 2031, subject to our continuing compliance with the requirements to maintain such orphan drug exclusivity.

In addition to orphan drug exclusivity, under the Hatch-Waxman Act, if a product is a “new chemical entity” or NCE, generally meaning that the active moiety has never before been approved in any drug, there is a period of five years from approval of the first indication during which the FDA may not accept for filing any abbreviated new drug application, or ANDA, under section 505(j) of the Federal Food, Drug, and Cosmetic Act, or an application under section 505(b)(2) of the statute for a drug with the same active moiety. An ANDA or 505(b)(2) application may be submitted after four years, however, if the sponsor of the application makes a Paragraph IV certification.

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Our request for NCE exclusivity for RYTELO is pending review by the FDA. If the FDA were to grant NCE exclusivity for RYTELO, NCE exclusivity would continue until June 2029.

A product that is not an NCE may qualify for a three-year period of exclusivity if the NDA contains new clinical data, (other than bioavailability studies) derived from studies conducted by or for the sponsor, that were necessary for approval. In that instance, the exclusivity period does not preclude filing or review of an ANDA or 505(b)(2) application; rather, the FDA is precluded from granting final approval to the ANDA or 505(b)(2) application until three years after approval of the RLD. Additionally, the exclusivity applies only to the conditions of approval that required submission of the clinical data.

In the US, the exclusivity periods and patent-related protections described above also may be eligible for a six-month extension of regulatory exclusivity, or pediatric exclusivity, pursuant to section 505A of the Federal Food, Drug, and Cosmetic Act, if the sponsor submits pediatric data that “fairly respond” to a written request from FDA for such data; however, we do not expect to receive pediatric exclusivity for RYTELO in the U.S.

Europe

In the EEA, pursuant to the European Union Data Exclusivity Directive 2004/27/EC, upon drug product approval a new medicinal product is entitled to New Active Substance, or NAS, exclusivity in the form of eight years of data exclusivity and two years of market exclusivity, conferring a total of ten years of exclusivity for the first-approved indication. Thus, subject to receiving approval from the EC for RYTELO for the treatment of certain patients with lower-risk MDS, we expect to have a total of ten years of NAS exclusivity for this indication from the time of approval.

In addition to NAS exclusivity, orphan drug designation by the EC provides regulatory and financial incentives for companies to develop and market therapies that treat a life‑threatening or chronically debilitating condition affecting no more than five in 10,000 persons in the EU, and where no satisfactory treatment is available. Orphan drug designation also entitles a party to financial incentives such as reduction of fees or fee waivers, as well as protocol assistance from the EMA during the product development phase, and direct access to the centralized authorization procedure. In addition, ten years of market exclusivity is granted following receipt of drug product approval, meaning that another application for marketing authorization of a later similar medicinal product for the same therapeutic indication will generally not be approved by the EC. This period may be reduced to six years if the orphan drug designation criteria are no longer met, including where it is shown that the product is sufficiently profitable to not justify maintenance of market exclusivity.

In December 2015 and July 2020, the EC granted orphan drug designation to imetelstat for the treatment of MF and MDS, respectively. As part of its review of our MAA for RYTELO, the EMA reviewed the grant of orphan drug designation for the treatment of certain patients with MDS. If RYTELO is approved by the EC and we continue to maintain orphan drug designation for RYTELO for MDS, we anticipate that we will have the potential to retain market exclusivity in the EEA for RYTELO in the approved indication for ten years post-approval. However, if in the future the EC chooses not to maintain its grant of orphan designation for RYTELO for MDS, we will not be eligible for 10 years of orphan drug exclusivity, although we would still be eligible for up to 10 years of NAS exclusivity, as described above.

In addition, subject to RYTELO's approval by the EC, under the European Pediatric Regulation, if we fulfill our pediatric investigation plan agreed upon with the EMA, we would be eligible to receive an additional two years of exclusivity, which may enable us to maintain orphan drug exclusivity in the EEA for RYTELO in certain patients with lower-risk MDS for an additional two years.

Prior Collaboration with Janssen Biotech, Inc.

Upon the effective date of termination of the license and collaboration agreement, or the Prior Collaboration Agreement, with Janssen Biotech, Inc., or Janssen, on September 28, 2018, we regained global rights to imetelstat and are continuing the development, commercialization and marketing of imetelstat on our own. In accordance with the termination provisions of the Prior Collaboration Agreement, we have an exclusive worldwide license for intellectual property developed under the Prior Collaboration Agreement for the further development, commercialization and marketing of imetelstat, without any economic obligations to Janssen with respect to such license. Janssen has assigned to us certain intellectual property developed by it under the Prior Collaboration Agreement. We now are responsible for the costs of maintaining, prosecuting and litigating all imetelstat intellectual property that we own.

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Licensing

We have no material license agreements. We have global rights to imetelstat, which was discovered and developed at Geron.

Manufacturing

A typical sequence of steps in the manufacture of imetelstat drug product includes the following key components:

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starting materials, which are well‑defined raw materials that are used to make bulk drug substance;
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bulk drug substance, which is the active pharmaceutical ingredient in a drug product that provides pharmacological activity or other direct effect in the treatment of disease; and
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final drug product, which is the finished dosage form that contains the drug substance that is shipped to the clinic for patient treatment.

Since September 2018, we have engaged third‑party contract manufacturers and have established our own manufacturing supply chain to manufacture and supply additional quantities of imetelstat that meet applicable regulatory standards for current and potential commercial uses and current and potential future clinical trials.

We do not have direct control over third‑party personnel or operations. These third‑party contract manufacturers, and/or any other third parties that we may rely upon for the manufacture and/or supply of imetelstat, typically complete their services on a proposal by proposal basis under master supply agreements and may need to make substantial investments to enable sufficient capacity increases and cost reductions, and to implement those regulatory and compliance standards necessary for commercial production and successful Phase 3 clinical trials. These third‑party contract manufacturers, and/or any other third parties that we may rely upon for the manufacture and/or supply of imetelstat, may not be able to achieve such capacity increases, cost reductions, or regulatory and compliance standards, and even if they do, such achievements may not be at a commercially reasonable cost. We are responsible for establishing any long‑term commitments or commercial supply agreements with any of the third‑party contract manufacturers for imetelstat. The information provided in this section should be reviewed in the context of the section entitled “Risks Related to Manufacturing RYTELO (Imetelstat)” under Part I, Item 1A, “Risk Factors” of this Report.

Competition

The pharmaceutical and biotechnology industries are characterized by intense and dynamic competition with rapidly advancing technologies and a strong emphasis on proprietary products. While we believe our proprietary oligonucleotide chemistry; experience with the biological mechanisms related to RYTELO, telomeres and telomerase; clinical data to date indicating potential disease-modifying activity with RYTELO treatment; and knowledge and expertise around the development of potential treatments for myeloid hematologic malignancies provide us with competitive advantages, we face competition from many different sources, including major pharmaceutical, specialty pharmaceutical and biotechnology companies, academic institutions, governmental agencies, and public and private research institutions. RYTELO is competing with other products and therapies that currently exist, are being developed or will in the future be developed, some of which we may not currently be aware of.

Competition in Lower-Risk MDS

The current standard of care for the treatment of lower-risk MDS is the use of ESAs to address the patient’s chronic anemia. Once ESAs are no longer effective, serial blood transfusions are often administered that can cause damaging effects to other organs due to iron overload, resulting in shorter survival. In addition, other best available therapies are used without durable effect for the patient.

In lower-risk MDS, data from IMerge Phase 3 resulted in FDA approval of RYTELO in June 2024 for the treatment of certain patients with lower-risk MDS. IMerge showed meaningful and durable transfusion independence, activity across MDS patient subtypes, and potential disease-modifying activity achievable with RYTELO treatment. We believe that these key features are differentiators compared to currently approved products as well as investigational drugs currently in clinical development.

In lower-risk MDS, RYTELO competes against a number of currently existing therapies, including ESAs and other hematopoietic growth factors that are indicated for anemia; immunomodulators, such as Revlimid (lenalidomide) by Celgene Corporation, or Celgene, a Bristol Myers Squibb Company, or BMS, company;

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hypomethylating agents, such as Vidaza (azacitidine) by Celgene and manufacturers of generic azacitidine; Dacogen (decitabine) by Otsuka America Pharmaceutical, Inc. and other manufacturers in the U.S. and Janssen in the EU; Inqovi (oral combination of decitabine and cedazuridine) by Astex Pharmaceuticals, Inc., or Astex; Tibsovo (ivosidenib), an IDH1 inhibitor, by Servier Pharmaceuticals, LLC; and Reblozyl (luspatercept), a TGF-beta inhibitor, by BMS. In August 2023, luspatercept was also approved for the treatment of anemia in ESA-naive adult patients with very low-to intermediate-risk MDS who may require regular RBC transfusions.

Other therapies currently in Phase 3 development in lower-risk MDS include elritercept (KER-050), a TGF-beta inhibitor, by Keros Therapeutics, Inc.; and Reblozyl (luspatercept) in non-transfusion-dependent lower-risk MDS patients, by BMS.

In addition, there are multiple Phase 1 and Phase 2 clinical trials of other agents being developed for lower-risk MDS, including but not limited to: LB‐100, a PP2A inhibitor, by Lixte Biotechnology Holdings, Inc.; bemcentinib, an AXL inhibitor, by BerGenBio ASA; H3B‐8800, a spliceosome inhibitor, by H3 Biomedicine, Inc.; TP-0184, an inhibitor of ALK2 or ACVR1 kinase, by Sumitomo Dainippon Pharma Oncology, Inc; ilginatinib (NS-018), a JAK2 inhibitor, by NS Pharma, Inc., a U.S. subsidiary of Nippon Shinyaku Co., Ltd., or NS Pharma; a lower dose of ASTX727, an oral formulation of decitabine and cedazuridine, referred to as ASTX727 LD, by Astex; ASTX030, an oral formulation of azacitidine and cedazuridine, by Astex; JSP191, or briquilimab, an anti-C-kit antibody, by Jasper Therapeutics, Inc.; R289, an oral inhibitor of interleukin receptor-associated kinases 1 and 4, or IRAK1/4, by Rigel Pharmaceuticals, Inc.; a combination treatment regimen of luspatercept and lenalidomide by BMS; and HuMax-IL8 (BMS-986253), an anti-IL-8 monoclonal antibody, by BMS and etavopivat, an oral, small molecule activator of erythrocyte pyruvate kinase (PKR) by Forma Therapeutics, Inc., a Novo Nordisk Company; canakinumab, an interleukin antagonist, by Novartis AG; and AG946, a next-generation pyruvate kinase-R (PKR) activator, by Agios Pharmaceuticals, Inc.

Competition in Relapsed/Refractory MF

The current standard of care for the treatment of Intermediate-2 or High-risk MF is the use of JAK inhibitors, to address the patient’s symptoms. Once JAK inhibitors fail or are no longer effective, a variety of best available therapies are used since there are no approved treatments for this patient population and median OS is 14 to 16 months after discontinuation from the predominant JAK inhibitor being used today.

In Intermediate-2 or High-risk relapsed/refractory MF, data from IMbark suggest potential disease-modifying activity with RYTELO treatment and a potential meaningful improvement in OS, which is supported in a comparison to real-world data.

If approved for commercial sale for the treatment of relapsed/refractory MF, RYTELO would compete against currently approved JAK inhibitors: Jakafi (ruxolitinib) by Incyte Corporation, or Incyte, Inrebic (fedratinib) by Celgene, and OJJAARA (momelotinib), which was approved in September 2023 for the treatment of intermediate or high-risk MF, including primary MF or secondary MF (postpolycythemia vera and post-essential thrombocytopenia), in adults with anemia, by GlaxoSmithKline plc, or GSK, as well as a kinase inhibitor, Vonjo (pacritinib), by CTI Biopharma Corp., which was approved in February 2022 for the treatment of adults with Intermediate or High-Risk primary or secondary myelofibrosis with a platelet count below 50 × 109/L. Other treatment modalities for MF include hydroxyurea for the management of splenomegaly, leukocytosis, thrombocytosis and constitutional symptoms; splenectomy and splenic irradiation for the management of splenomegaly and co-existing cytopenias; chemotherapy; and pegylated interferon. Drugs for the treatment of MF-associated anemia include ESAs, androgens, danazol, corticosteroids, thalidomide and lenalidomide.

Other therapies currently in Phase 3 development in MF, some of which may obtain regulatory approval earlier than RYTELO for MF, include momelotinib plus AZD5153, a BET inhibitor by GSK; pelabresib (CPI-0610), a BET inhibitor, by MorphoSys AG (acquired by Novartis in 2024); and navtemadlin, an MDM2-inhibitor, by Kartos Therapeutics, Inc. Other approaches for MF currently under investigation that could compete with RYTELO in the future include luspatercept; zinpentraxin alfa (RG6354, formerly PRM-151), an anti-fibrosis antibody, by F. Hoffmann-La Roche, Ltd.; INCB160058, a JAK2 inhibitor, by Incyte; AJ1-11095, a JAK2 inhibitor, by Ajax Therapeutics, Inc.; SLT-5505, a pan-LOX inhibitor, by Syntara Limited; tasquinimod, an S100A9 inhibitor, by Active Biotech AB; XPOVIO (selinexor), a nuclear export inhibitor, by Karyopharm Therapeutics, Inc.; TL-895, an oral tyrosine kinase inhibitor, by Telios Pharma, Inc.; pelcitoclax (APG-1252), a dual BCL-2/BCL-XL inhibitor, by Ascentage Pharma; DISC-0974, a monoclonal antibody against hemojuvelin (HJV) by DISC Management Inc.; KER-050 in combination with ruxolitinib, by Keros Therapeutics; CK0804, an allogeneic T-regulatory cell agent, by Cellenkos, Inc. in collaboration with Incyte; TP-3654, PIM kinase inhibitor by Sumitomo Pharma Co., Ltd.; and a mutated-CALR vaccine, a peptide-based vaccine, from the Icahn School of Medicine at Mount Sinai.

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Government Regulation

Regulation by governmental authorities in the U.S. and other countries is a significant factor in the development, manufacture and marketing of RYTELO (imetelstat). Imetelstat will require regulatory approval by regulatory authorities prior to commercialization in any jurisdictions where it is not yet approved. In particular, potential human therapeutic products, such as imetelstat, are subject to rigorous preclinical and clinical testing and other approval procedures of the FDA and similar regulatory authorities in European and other countries. Various governmental statutes and regulations at both the federal and state level also govern or influence testing, manufacturing, safety, labeling, storage, import, export, distribution, sale and recordkeeping related to such products and their marketing. The process of obtaining these approvals and the subsequent compliance with appropriate statutes and regulations require the expenditure of substantial time and money, and there can be no guarantee that approvals will be granted. Moreover, compliance with government regulations governing personal data and information security requires the expenditure of substantial time and financial resources. The information provided in this section should be reviewed in the context of the sections entitled “Risks Related to the Further Development of RYTELO (Imetelstat)” and “Risks Related to Regulatory Approval of RYTELO” under Part I, Item 1A, “Risk Factors” of this Report.

United States Food and Drug Administration Regulatory Approval Process

Prior to commencement of clinical trials involving humans, preclinical testing of new pharmaceutical products is generally conducted on animals in the laboratory to evaluate the potential efficacy and safety of a product candidate. The results of these trials are submitted to the FDA as part of an Investigational New Drug, or IND, application, which must become effective before clinical testing in humans can begin. The FDA can place an IND on clinical hold at any time, which prevents the conduct of clinical trials under the IND until safety concerns or questions are addressed by the IND sponsor to the FDA’s satisfaction.

Typically, clinical evaluation involves a time consuming and costly three phase trial process. In Phase 1, clinical trials are conducted with a small number of healthy volunteers or patients afflicted with a specific disease to assess safety and to evaluate the pattern of drug distribution and metabolism within the body. In Phase 2, clinical trials are conducted with groups of patients afflicted with a specific disease in order to determine preliminary efficacy, optimal dosages and expanded evidence of safety. The Phase 2 trials can be conducted comparing the investigational treatment to a comparator arm, or not. If used, a comparator usually includes standard of care therapy. Safety and efficacy data from Phase 2 clinical trials, even if favorable, may not provide sufficient rationale for proceeding to a Phase 3 clinical trial. In Phase 3, large scale, multi‑center, comparative trials are conducted with patients afflicted with a target disease to provide sufficient data to demonstrate the efficacy and safety required by the FDA. The FDA closely monitors the progress of each of the three phases of clinical testing and may, at its discretion, re‑evaluate, alter, suspend, or terminate the trials. Human clinical trials must be conducted in compliance with Good Clinical Practice, or GCP, regulations and applicable laws, with the oversight of Institutional Review Boards for the protection of human subjects. The manufacture of drug product candidates is subject to requirements that drugs be manufactured, packaged and labeled in conformity with current Good Manufacturing Practices, or cGMP, and applicable laws.

The results of the preclinical and clinical testing of drugs and complete manufacturing information are submitted to the FDA in the form of an NDA for review and approval prior to commencement of commercial sales. Submission of an NDA requires the payment of a substantial user fee to the FDA, which may be waived in certain cases. In responding to an NDA submission, the FDA may approve the drug for commercialization, impose limitations on its indications for use and labeling, including in the form of Risk Evaluation and Mitigation Strategies or may issue a complete response letter. Even if an NDA is approved, its sponsor is subject to ongoing and pervasive regulatory compliance requirements.

European Union and Other Regulatory Approval Process

Prior to initiating clinical trials in a region outside of the U.S., a clinical trial application must be submitted and reviewed by the appropriate regulatory authority governing clinical trials in the country in which the trial will be conducted. Whether or not FDA clearance or approval has been obtained, approval of a product by comparable regulatory authorities in the EU and other countries is necessary prior to marketing the product in such countries. The competent regulatory authorities may impose their own requirements and may refuse to grant an approval, or may require additional data before granting it, even though the relevant product has been cleared or approved by the FDA or another authority. As with the FDA, the regulatory authorities in the EU and other developed countries have lengthy approval processes for pharmaceutical products. The process for gaining approval in particular countries varies, but generally follows a similar sequence to that described for FDA approval. In Europe, the EMA and the CHMP provide a mechanism for EU member states to exchange information on all aspects of product licensing. The

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EU has established the EMA for the evaluation of medical products, with a centralized procedure which is mandatory for orphan and oncology products and which grants a single marketing authorization valid in all EU member states.

Fraud and Abuse, and Transparency Laws and Regulations

We may also be subject to additional regulation and enforcement by the federal government and by authorities in the states and foreign jurisdictions in which we conduct our business. These additional regulations could affect our current and future arrangements with healthcare professionals, principal investigators, consultants, customers and third‑party payors. Such laws include, without limitation, state and federal bribery/anti‑kickback, the False Claims Act, privacy and data security laws, and healthcare professionals payment transparency laws.

The federal Anti‑Kickback Statute makes it illegal for any person or entity, including a prescription drug manufacturer (or a party acting on its behalf) to knowingly and willfully, directly or indirectly, solicit, receive, offer, or pay any remuneration that is intended to induce the referral of business, including the purchase, order, or lease of any good, facility, item or service for which payment may be made under a federal healthcare program, such as Medicare, Medicaid TRICARE, and the Veterans Health Administration. The term “remuneration” has been broadly interpreted to include anything of value. Several courts have interpreted the statute’s intent requirement to mean that if any one purpose of an arrangement involving remuneration is to induce referrals, the Anti‑Kickback Statute has been violated. The Patient Protection and Affordable Care Act of 2010, as amended by the Health Care and Education Reconciliation Act, collectively the Affordable Care Act or ACA, among other things, amended the intent requirement of the federal Anti‑Kickback Statute such that a person or entity no longer needs to have actual knowledge of the statute or specific intent to violate, in order to commit a violation.

Federal civil and criminal false claims and false statement laws, including the federal civil False Claims Act and its whistleblower or qui tam provisions that permit private individuals to bring an action on behalf of the government to enforce the civil False Claims Act, prohibit, among other things, any person or entity from knowingly presenting, or causing to be presented, for payment to, or approval by, federal programs, including Medicare and Medicaid, claims for items or services, including drugs, that are false or fraudulent or not provided as claimed. Entities can be held liable under these laws if they are deemed to “cause” the submission of false or fraudulent claims by, for example, providing inaccurate billing or coding information to customers, promoting a product off‑label, or for providing medically unnecessary services or items. In addition, a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal civil False Claims Act. Criminal prosecution is also possible for making or presenting a false, fictitious or fraudulent claim to the federal government.

The federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, created criminal and civil liability for, among other things, knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program, including private third‑party payors, knowingly and willfully embezzling or stealing from a healthcare benefit program, willfully obstructing a criminal investigation of a healthcare offense, and knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services.

HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act, or HITECH, and their implementing regulations, imposes obligations, including mandatory contractual terms, with respect to safeguarding the privacy, security, transmission and breach reporting of individually identifiable health information, upon entities subject to the law, such as health plans, healthcare clearinghouses and certain healthcare providers and their respective business associates and their subcontractors that perform services for them that involve individually identifiable health information. HITECH also created new tiers of civil monetary penalties, amended HIPAA to make civil and criminal penalties directly applicable to business associates, and gave state attorneys general new authority to file civil actions for damages or injunctions in U.S. federal courts to enforce the federal HIPAA laws and seek attorneys’ fees and costs associated with pursuing federal civil actions.

The federal Physician Payments Sunshine Act requires certain manufacturers of drugs, devices, biologics and medical supplies for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program, with specific exceptions, to report annually to the Centers for Medicare & Medicaid Services, or CMS, information related to payments or other transfers of value made to physicians (defined to include doctors, dentists, optometrists, podiatrists, and chiropractors), other healthcare professionals (such as physicians assistants and nurse practitioners), and teaching hospitals, and information related to ownership and investment interests held by physicians and their immediate family members.

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Analogous state and foreign laws and regulations, such as state anti‑kickback and false claims laws, may apply to sales or marketing arrangements and claims involving healthcare items or services reimbursed by non‑governmental third-party payors, including private insurers. Additionally, we may be subject to state and foreign laws that require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and certain industry compliance guidance documents. Further, we may be subject to state and foreign laws that require drug manufacturers or other pharmaceutical companies to report information related to payments and other transfers of value to physicians, other healthcare providers and healthcare entities, or marketing expenditures, as well as state, foreign and local laws that require the registration of pharmaceutical sales representatives; state and foreign laws that require the reporting of information related to drug pricing; and state, federal and foreign laws governing the privacy and security of personal data (including key-coded data and health information), including the European Union’s General Data Protection Regulation, or EU GDPR, many of which differ from each other in significant ways, thus complicating compliance efforts.

If our operations are found to be in violation of any of these or any other healthcare regulatory laws that may apply to us, we may be subject to significant penalties, including the imposition of significant civil, criminal and administrative penalties, damages, monetary fines, disgorgement, imprisonment, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, reputational harm, diminished profits and future earnings, additional reporting requirements and oversight if we become subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these laws, and curtailment of our operations, any of which could adversely affect our ability to operate our business and our results of operations. Defending against any such actions can be costly, time-consuming and may require significant financial and personnel resources. Therefore, even if we are successful in defending against any such actions that may be brought against us, our business may be impaired.

Data Privacy and Security

In the ordinary course of our business, we process personal or sensitive data. Accordingly, we are, or may become, subject to numerous data privacy and security obligations, including federal, state, local, and foreign laws, regulations, guidance, and industry standards related to data privacy and security. Efforts to ensure that our current and future business arrangements will comply with applicable data privacy and data security laws and regulations will involve substantial costs. For example, foreign data privacy and security laws (including but not limited to the EU GDPR and UK GDPR) impose strict significant and complex compliance obligations on entities that are subject to those laws. As one example, the EU GDPR applies to any company established in the EEA and to companies established outside the EEA that process personal data in connection with the offering of goods or services to data subjects in the EEA or the monitoring of the behavior of data subjects in the EEA. These obligations may include limiting personal data processing to only what is necessary for specified, explicit, and legitimate purposes; requiring a legal basis for personal data processing; requiring the appointment of a data protection officer in certain circumstances; increasing transparency obligations to data subjects; requiring data protection impact assessments in certain circumstances; limiting the collection and retention of personal data; increasing rights for data subjects formalizing a heightened and codified standard for data subject consent, requiring the implementation and maintenance of technical and organizational safeguards for personal data, mandating data breach notifications to relevant supervisory authority(ies), and mandating the appointment of representatives in the UK and/or the EU in certain circumstances. Moreover, we expect that there will continue to be new proposed data privacy and security laws, regulations and industry standards in the U.S. As one example, the California Consumer Privacy Act of 2018, or CCPA, imposes numerous obligations on covered business. Although the CCPA exempts certain data (such as some data processed in the context of clinical trials), the CCPA, to the extent applicable to our business and operations, may increase our compliance costs and potential liability with respect to the personal data we maintain about California residents. The CCPA provides for civil penalties and a private right of action for data breaches which may include an award of statutory damages. Failure, or perceived failure, to comply with all applicable obligations could result in enforcement actions, fines, litigation, and other consequences. See the section titled “We are subject to stringent and changing U.S. and foreign laws, regulations, rules, contractual obligations, industry standards, policies and other obligations related to data privacy and security. Our (or third parties with whom we work) actual or perceived failure to comply with such obligations could lead to regulatory investigations or actions; litigation (including class claims) and mass arbitration; fines and penalties; disruptions for our business operations; reputational harm; loss of revenue and profits; and other adverse business impacts,” under “Risk Factors” in Part I, Item 1A of this Report for additional information about the laws and regulations to which we may become subject and about the risks to our business associated with such laws and regulations.

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Coverage and Reimbursement

Significant uncertainty exists as to the coverage and reimbursement status of any product candidate that receives regulatory approval. In the U.S. and markets in other countries, sales of RYTELO will depend, in part, on the extent to which third‑party payors provide coverage and establish adequate reimbursement levels.

In the U.S., third‑party payors include federal and state healthcare programs, government authorities, private managed care providers, private health insurers and other organizations. Decisions regarding the extent of coverage and amount of reimbursement to be provided are made on a plan-by-plan basis. Reimbursement by a third-party payor may depend upon a number of factors, including the third-party payor’s determination that a product is safe, effective and medically necessary; appropriate for the specific patient; cost-effective; supported by peer-reviewed medical journals; included in clinical practice guidelines; and neither cosmetic, experimental, nor investigational. A third-party payor could also require that certain lines of therapy be completed or failed prior to reimbursing our therapy. The principal decisions about reimbursement for new medicines are typically made by CMS. CMS decides whether and to what extent products will be covered and reimbursed under Medicare and private payors tend to follow CMS to a substantial degree. Third-party payors determine which products and procedures they will cover and establish reimbursement levels. Third‑party payors are increasingly challenging the price, examining the medical necessity and reviewing the cost‑effectiveness of medical drug products and medical services, in addition to questioning their safety and efficacy. Such payors may limit coverage to specific drug products on an approved list, also known as a formulary, which might not include all of the FDA‑approved drugs for a particular indication. We may need to conduct expensive pharmacoeconomic studies in order to demonstrate the medical necessity and cost‑effectiveness of RYTELO, in addition to the costs required to obtain the FDA approvals. Nonetheless, RYTELO may not be considered medically necessary or cost‑effective. Moreover, the process for determining whether a third‑party payor will provide coverage for a drug product may be separate from the process for setting the price of a drug product or for establishing the reimbursement rate that such a payor will pay for the drug product. A payor’s decision to provide coverage for a drug product does not imply that an adequate reimbursement rate will be approved. Further, one payor’s determination to provide coverage for a drug product does not assure that other payors will also provide coverage for the drug product, as there is no uniform coverage and reimbursement policy among third-party payors in the U.S. Adequate third‑party reimbursement may not be available to enable us to maintain price levels sufficient to realize an appropriate return on our investment in RYTELO. Even if a third-party payor covers a particular product or procedure, the resulting reimbursement payment rates may not be adequate. Coverage policies and third-party payor reimbursement rates may change. Thus, even if favorable coverage and reimbursement status is attained, less favorable coverage policies and reimbursement rates may be implemented in the future. These third-party payors are increasingly reducing coverage and reimbursement for medical products, drugs and services. In addition, the U.S. government, state legislatures and foreign governments have continued implementing cost-containment programs, including price controls, restrictions on coverage and reimbursement and requirements for substitution of generic products. Adoption of price controls and cost-containment measures, and adoption of more restrictive policies in jurisdictions with existing controls and measures, could further limit sales of any product. Decreases in third-party reimbursement for any product or a decision by a third-party payor not to cover a product could reduce demand for the product and also have a material adverse effect on future sales.

Healthcare Reform

There has been increasing legislative and enforcement interest in the U.S. with respect to specialty drug pricing practices. Specifically, there have been several recent U.S. Congressional inquiries, Presidential executive orders, and federal and state legislative activity designed to, among other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, reduce the cost of drugs under Medicare, and reform government program reimbursement methodologies for drugs. For example, on August 16, 2022, the Inflation Reduction Act of 2022 was signed into law, which, among other things, (i) directs the Department of Health and Human Services, or HHS, to negotiate the price of certain high-expenditure, single-source drugs and biologics covered under Medicare that have been on the market for at least seven years (the “Medicare Drug Price Negotiation Program”), and subject drug manufacturers to civil monetary penalties and a potential excise tax by offering a price that is not equal to or less than the negotiated “maximum fair price” for such drugs and biologics under the law, and (ii) imposes rebates with respect to certain drugs and biologics covered under Medicare Part B or Medicare Part D to penalize price increases that outpace inflation. The IRA permits HHS to implement many of these provisions through guidance, as opposed to regulation, for the initial years. These provisions began to take effect progressively in fiscal year 2023. On August 15, 2024, HHS announced the agreed upon prices of the first ten drugs that were subject to price negotiations, although the Medicare Drug Price Negotiation Program is currently subject to legal challenges. On January 17, 2025, HHS selected fifteen additional products covered under Part D for price negotiation in 2025. Each year thereafter more Part B and Part D products will become subject to the Medicare Drug Price Negotiation Program. Further, on December 7, 2023, an initiative to control the price of prescription drugs through the use of march-in rights under the Bayh-Dole Act was announced. On December 8,

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2023, the National Institute of Standards and Technology published for comment a Draft Interagency Guidance Framework for Considering the Exercise of March-In Rights which for the first time includes the price of a product as one factor an agency can use when deciding to exercise march-in rights. While march-in rights have not previously been exercised, it is uncertain if that will continue under the new framework. Additionally, at the state level, legislatures have increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, to encourage importation from other countries and bulk purchasing.

The U.S. and some foreign jurisdictions are considering or have enacted legislative and regulatory proposals to contain healthcare costs, as well as to improve quality and expand access. For example, in March 2010, the ACA was signed into law, which included a number of provisions of importance to the biopharmaceutical industry. There have been judicial and Congressional challenges and amendments to certain aspects of the ACA. For example, the IRA, among other things, extends enhanced subsidies for individuals purchasing health insurance coverage in ACA marketplaces through plan year 2025. The IRA also eliminates the “donut hole” under the Medicare Part D program beginning in 2025 by significantly lowering the beneficiary maximum out-of-pocket cost and creating a new manufacturer discount program. It is possible that the ACA will be subject to judicial or Congressional challenges in the future. We expect that other healthcare reform measures that may be adopted in the future, particularly in light of the recent U.S. Presidential and Congressional elections, may result in more rigorous coverage criteria and lower reimbursement, and additional downward pressure on the price that may be charged for RYTELO. It is unclear how any such healthcare reform measures will impact the pharmaceutical industry.

In addition, other legislative changes have been proposed and adopted since the ACA was enacted. For example, in August 2011, the Budget Control Act of 2011 was enacted, which, among other things, created the Joint Select Committee on Deficit Reduction to recommend to Congress proposals in spending reductions. The Joint Select Committee on Deficit Reduction did not achieve a targeted deficit reduction of at least $1.2 trillion for fiscal years 2012 through 2021, triggering the legislation’s automatic reduction to several government programs. This includes aggregate reductions to Medicare payments to providers of up to 2% per fiscal year, which went into effect beginning on April 1, 2013 and, due to subsequent legislative amendments to the statute will stay in effect through 2032 unless additional Congressional action is taken. More recently, there has been heightened governmental scrutiny in the U.S. to control the rising cost of healthcare.

Information About Our Executive Officers

The following table sets forth certain information with respect to our executive officers and other members of management as of January 31, 2025:

Name |  | Age |  |  | Position
Executive Officers |  |  |  |  |
John A. Scarlett, M.D. |  |  | 73 |  |  | President, Chief Executive Officer and Chairman of the Board
Michelle Robertson |  |  | 58 |  |  | Executive Vice President, Finance, Chief Financial Officer and Treasurer
Joseph Eid, M.D. |  |  | 57 |  |  | Executive Vice President, Research and Development
Faye Feller, M.D. |  |  | 43 |  |  | Executive Vice President, Chief Medical Officer
Andrew J. Grethlein, Ph.D. |  |  | 60 |  |  | Executive Vice President, Chief Operating Officer
Scott A. Samuels, Esq. |  |  | 54 |  |  | Executive Vice President, Chief Legal Officer and Secretary
James Ziegler |  |  | 59 |  |  | Executive Vice President, Chief Commercial Officer
Other Members of Management
Melissa A. Kelly Behrs |  |  | 61 |  |  | Executive Vice President, Business Operations and Chief Alliance Officer
Edward E. Koval |  |  | 62 |  |  | Executive Vice President, Chief Business Officer
Shannon T. Odam |  |  | 50 |  |  | Senior Vice President, Chief People Officer

John A. Scarlett, M.D., has served as our Chief Executive Officer and a director since September 2011 and President since January 2012 and was appointed to Chairman of the Board in December 2018. Dr. Scarlett served as a director of CytomX Therapeutics, Inc., a biopharmaceutical company focused on developing antibody therapeutics for the treatment of cancer, from June 2016 to June 2022. He was also a director for Chiasma, Inc., a biopharmaceutical company focused on transforming injectable drugs into oral medications, from February 2015 until its acquisition by Amyrt Pharma plc, a biopharmaceutical company, in August 2021. Prior to joining Geron, Dr. Scarlett served as President, Chief Executive Officer and a member of the board of directors of Proteolix, Inc., a privately held, oncology oriented biopharmaceutical company, from February 2009 until its acquisition by Onyx

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Pharmaceuticals, Inc., an oncology oriented biopharmaceutical company, in November 2009. From February 2002 until its acquisition by Ipsen, S.A. in October 2008, Dr. Scarlett served as the Chief Executive Officer and a member of the board of directors of Tercica, Inc., an endocrinology oriented biopharmaceutical company, and also as its President from February 2002 through February 2007. From March 1993 to May 2001, Dr. Scarlett served as President and Chief Executive Officer of Sensus Drug Development Corporation. In 1995, he co-founded Covance Biotechnology Services, Inc., a contract biopharmaceutical manufacturing operation, and served as a member of its board of directors from inception to 2000. From 1991 to 1993, Dr. Scarlett headed the North American Clinical Development Center and served as Senior Vice President of Medical and Scientific Affairs at Novo Nordisk Pharmaceuticals, Inc., a wholly owned subsidiary of Novo Nordisk A/S. Dr. Scarlett received his B.A. degree in chemistry from Earlham College and his M.D. from the University of Chicago, Pritzker School of Medicine.

Michelle Robertson has served as our Executive Vice President, Chief Financial Officer and Treasurer since September 2023. Prior to joining Geron, she served as the Chief Financial Officer and Treasurer of Editas Medicine, Inc., a CRISPR genome editing company, from January 2020 to May 2023. Before that, she served as Chief Financial Officer of Momenta Pharmaceuticals, Inc. from 2018 until 2020, when Momenta was acquired by Johnson & Johnson. Prior to joining Momenta, Ms. Robertson held multiple commercial finance roles of increasing responsibility, including Vice President, Oncology Finance for Baxalta Incorporated following its spin-off from Baxter International Inc., from 2015 to 2016; Head of Financial Planning and Analysis and Operations Excellence at Ironwood Pharmaceuticals, Inc. from 2012 to 2015; and various finance and commercial operations roles at Genzyme Corporation (acquired by Sanofi). She also currently serves as a member of the board of directors and as the chair of the audit committee for Verastem, Inc., a publicly-traded biopharmaceutical company. Ms. Robertson received her B.S. in Finance and A.S. in Accounting and Management from Bentley University.

Joseph Eid, M.D., has served as our Executive Vice President Research and Development since November 2024. Prior to joining Geron, Dr. Eid served as President, Research and Development for Dragonfly Therapeutics, Inc., a clinical stage biopharmaceutical company, with overall responsibilities for Dragonfly's discovery and clinical research strategy and execution, from February 2023 to March 2024. Before joining Dragonfly Dr. Eid served as Executive Vice President, Chief Medical Officer at Luzsana Biotechnology, Inc., a pharmaceutical company and a subsidiary of Hengrui Pharmaceuticals, from October 2021 to September 2022. Prior to his biotechnology leadership roles, Dr. Eid served as Senior Vice President and Head, Global Medical Affairs for Bristol Myers Squibb, or BMS, from 2017 to 2021, where he led global medical affairs across four therapeutic franchises. Prior to BMS, Dr. Eid spent nine years at Merck, first at Merck Research Labs, where he led the first-in-human strategy of their global KEYTRUDA® program, and then at Merck Global Human Health, where he built Merck's global oncology medical affairs team. Dr. Eid started his pharmaceutical career at Hoffmann La Roche, where he was responsible for both early- and late-stage assets and led several clinical teams. Prior to entering the biopharmaceutical industry, Dr. Eid was an Assistant Professor in the hematology department of Robert Wood Johnson Medical School in New Jersey from 1999 to 2004 and as a volunteer, through 2019. Dr. Eid received his M.D. from Saint Joseph University, Faculty of Medicine, and serves on ALSAC/St Jude Children’s Research Hospital board, and on the board of Angle PLC, a liquid biopsy company.

Faye Feller, M.D., has served as our Executive Vice President, Chief Medical Officer since July 2022. Previously, she served as our Vice President of Clinical Development since she joined Geron in April 2019. In this role, Dr. Feller played a strategic role in designing and driving execution of Geron’s Phase 3 clinical trials, served as the primary medical point of contact between Geron and our clinical investigators and led the preparation of data for assessment by the data monitoring committees. Prior to joining Geron, Dr. Feller was Senior Director at Janssen Research and Development, LLC (Janssen), a global pharmaceutical company, and both a Compound Lead and Study Responsible Physician for multiple clinical trials of early and late-stage development assets at Janssen from February 2015 to March 2019. Prior to Janssen, Dr. Feller was an instructor in the leukemia department of Memorial Sloan Kettering Cancer Center in New York from July 2013 to February 2015. She received a B.A. from New York University and an M.D. from Mount Sinai School of Medicine. She completed her residency in internal medicine at Mount Sinai Hospital and her fellowship in medical oncology at Memorial Sloan Kettering Cancer Center.

Andrew J. Grethlein, Ph.D., has served as our Executive Vice President, Chief Operating Officer since January 2019. Previously, he served as our Executive Vice President, Development and Technical Operations, from July 2014 to January 2019. He joined Geron in September 2012 as our Executive Vice President, Technical Operations. Prior to joining Geron, Dr. Grethlein was Executive Vice President and Chief Operating Officer for Inspiration Biopharmaceuticals, a biopharmaceutical company, from January 2010 to September 2012. From October 2008 until January 2010, Dr. Grethlein was Senior Vice President of Biotechnology and Portfolio Management Team Leader for Hematology at Ipsen S.A., a global specialty pharmaceutical company. His responsibilities at Ipsen included planning and execution of worldwide strategy for product and portfolio development in the hematologic therapeutic area. From 2003 to 2008, Dr. Grethlein served as Senior Vice President of Pharmaceutical Operations at Tercica, Inc., an endocrinology‑oriented biopharmaceutical company, where he was

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a member of the senior executive team that governed corporate strategy, business planning and company operations, and had responsibility for all manufacturing and quality functions. Before joining Tercica, Dr. Grethlein served in various positions at Elan Corporation, a biotechnology company, from 1997 to 2003, including as Senior Director, South San Francisco Pharmaceutical Operations. From 1995 to 1997, Dr. Grethlein served as Manager, Biologics Development and Manufacturing, for Athena Neurosciences, Inc., a pharmaceutical company. Prior to this, he served in various engineering positions for the Michigan Biotechnology Institute, a non-profit technology research and business development corporation. Dr. Grethlein received his A.A. degree in liberal arts from Simon’s Rock Early College, his B.S. in biology from Bates College, and his M.S. and Ph.D. in chemical engineering from Michigan State University.

Scott A. Samuels, Esq. has served as our Executive Vice President, Chief Legal Officer and Secretary since August 2023. Prior to joining Geron, Mr. Samuels served as Chief Legal Officer and Chief Compliance Officer of Prilenia Therapeutics, Inc., a clinical-stage biotechnology company, from March to May 2023. Before that, he served as Senior Vice President, General Counsel of BeiGene, Ltd., a global oncology company, from May 2017 to July 2022, where he built a large, global legal and compliance team, oversaw launches of three internally developed drug products in the U.S., Europe and China and development of a global healthcare compliance program, and led key strategic transactions with Amgen, Inc., Novartis AG and Celgene (now Bristol Myers Squibb). Prior to BeiGene, Mr. Samuels was assistant general counsel and then acting general counsel at ARIAD Pharmaceuticals, Inc., where he managed the company’s legal affairs, including SEC compliance and corporate governance and key licensing and distribution agreements prior to ARIAD’s acquisition by Takeda. Mr. Samuels also practiced law for 17 years in the corporate and life sciences practices at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C., a national law firm. Mr. Samuels received his B.A. in philosophy from Cornell University and his J.D. from George Mason University School of Law.

James Ziegler has served as our Executive Vice President, Chief Commercial Officer since September 2024. Prior to joining Geron, Mr. Ziegler served as the Executive Vice President, Commercial for Iovance Biotherapeutics, Inc., a biopharmaceutical company, from February 2020 to September 2024, with global responsibilities for Iovance's novel tumor infiltrating lymphocyte cell therapy program, where he led the U.S. commercial launch of Amtagvi™ for patients with previously treated advanced melanoma. Previously, Mr. Ziegler served in numerous commercial roles at Gilead Sciences, Inc., from 2011 to 2020, most recently as Vice President of the Cardiopulmonary and Inflammation Business Unit. Mr. Ziegler's earlier experience included commercial roles of increasing responsibility at Biogen, Inc., Amgen and Pfizer, Inc. Prior to his roles in the biopharmaceutical industry, Mr. Ziegler served as an armor officer in the U.S. Army. Mr. Ziegler received a B.S. from the United States Military Academy at West Point and an M.B.A. from the University of Chicago.

Melissa A. Kelly Behrs has served as our Executive Vice President, Business Operations and Chief Alliance Officer since December 2021. Previously, she was our Executive Vice President, Chief Business Officer from January 2019 to December 2021, Executive Vice President, Business Development and Portfolio & Alliance Management, from February 2014 to January 2019, and our Senior Vice President, Portfolio and Alliance Management from September 2012 to February 2014. Ms. Behrs joined Geron in November 1998 as Director of Corporate Development. Since then, she has also served in various managerial positions, including General Manager, R&D Technologies; Vice President, Corporate Development; Senior Vice President, Therapeutic Development, Oncology; and Senior Vice President, Strategic Portfolio Management. From 1990 to 1998, Ms. Behrs worked at Genetics Institute, Inc., a biotechnology research and development company, serving initially as Assistant Treasurer and then as Associate Director of Preclinical Operations where she was responsible for all business development, regulatory, and project management activities for the Preclinical Development function. Ms. Behrs received a B.S. from Boston College and an M.B.A. from Babson College.

Edward E. Koval has served as our Executive Vice President, Chief Business Officer since December 2021. From 2020 to 2021, he was Chief Business Officer at ZebiAI Therapeutics, a company spun out of X-Chem, Inc. in order to discover and develop advanced drug discovery programs based on novel machine learning technologies, until its acquisition by Relay Therapeutics, Inc., a clinical-stage precision medicine company, in April 2021. Prior to the spin-out of ZebiAI, from 2013 to 2020, he was Senior Vice President, Corporate Development, at X-Chem, Inc., a drug discovery company, where he closed multiple transactions with multinational pharmaceutical companies for programs in oncology, hematology/oncology, inflammation, infectious disease and rare diseases. From 2012 to 2015, Mr. Koval served as an independent corporate and business development consultant, advising multiple private and public biotech companies on partnering and fundraising. Mr. Koval’s prior pharmaceutical experience from 1992 to 2012 includes serving roles in business and corporate development, strategic planning, alliance management and financial evaluation and analysis at Novartis Pharmaceuticals Corporation, a pharmaceutical company, Merck & Co., Inc., a pharmaceutical company, and Chiron Corporation, a pharmaceutical company, where he finalized negotiations and executed and managed multiple strategic corporate partnerships and alliances. Mr. Koval holds an

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M.Sc. in Engineering from Rensselaer Polytechnic Institute and an M.B.A. from the Sloan School of Management at the Massachusetts Institute of Technology.

Shannon T. Odam has served as our Senior Vice President, Chief People Officer since January 2024. Previously, she served as our Vice President, Human Resources since joining Geron in June 2019. Prior to joining Geron, Ms. Odam served as Vice President, Human Resources at BioElectron Technology Corp., a clinical-stage biotechnology company, where she created and executed upon a unified vision by streamlining organizational design structure, designed leadership development programs to drive skills needed for future growth and led and executed human resources operations, from May 2017 to July 2018, before its acquisition by PTC Therapeutics Inc. in 2019. Before that, Ms. Odam served in various human capital roles at PricewaterhouseCoopers, or PWC, a multinational professional services firm, from 2007 to 2017. While at PWC, Ms. Odam served as the Silicon Valley Diversity and Inclusion Leader, the Audit Human Resources Leader, as well as an executive coach for PWC’s Coaching Center of Excellence. Ms. Odam received a B.S. in criminology from California State University, Fresno, an M.S. in Organizational Development from University of San Francisco and an Executive Coaching Credential from the Hudson Institute of Coaching.

Human Capital

Corporate Values

Fostering and maintaining a strong, healthy culture is a key strategic focus. We recognize and value the unique strengths of each of our team members, and the impact and contributions of every employee.

Our core values are the foundational principles of our organization. These values reflect who we are, how we work and the way our employees interact with one another, our partners, our communities, and our shareholders. They are the essential tenets that guide our business decisions, govern our relationships, both internally and externally, and articulate what we stand for and who we are. These values dictate the ways in which we interact, work and communicate, how we resolve conflicts and ultimately, how we strive to make Geron successful.

Our team of talented professionals is the foundation of our company and fuels our historical and prospective achievements for patients. We consider the intellectual capital of our employees to be an essential driver of our business and key to our future opportunities. As of December 31, 2024, we had 229 full‑time employees, of which 142 were women and 87 were men. Twenty-two of our employees hold Ph.D. degrees and 90 hold other advanced degrees. Of this current total workforce, 96 employees were engaged in, or directly supported, our commercial, marketing, market access, and business insight and analytics activities; 82 were engaged in, or directly supported, our medical affairs, quality, regulatory, pharmacovigilance, biometrics, clinical science, and research and

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development activities; and 51 were engaged in, or directly supported, general and administrative activities, such as business development, legal, finance, human resources, information technology and administration. Every employee plays a vital role in furthering our business goals and advancing the development and delivery of our novel medicine to patients.

In addition to our employee base, we have established, and expect to continue to establish, consulting agreements with drug development professionals, clinicians, attorneys and regulatory experts with experience in numerous fields, including clinical science, biostatistics, clinical operations, pharmacovigilance, quality, manufacturing and regulatory affairs.

To succeed in our mission, we must attract, recruit, retain, develop and motivate qualified clinical, nonclinical, commercial, scientific, manufacturing, regulatory, management and other personnel needed to support our business and operations. As a biotechnology company with office locations in the San Francisco Bay Area and northern New Jersey, and with remote employees throughout the U.S., we operate in a highly competitive industry and geographies for employee talent. In 2024, we engaged in extensive recruiting efforts to source and interview a talented and diverse pipeline of candidates, and enhanced our capabilities by significantly expanding our employee base. We grew our workforce by 103 employees, 74 of whom are part of our commercial team, who play a critical role in commercializing RYTELO. We maintain a comprehensive dashboard of measurements, including recruitment productivity, diversity, equity and inclusion metrics, employee engagement scores, total rewards benchmarking, participation rates and satisfaction scores for internal training, turnover rates and exit interview results, to guide our human capital management efforts.

We believe that our ability to attract highly skilled and talented employees in a competitive labor market is enhanced by nurturing our workplace culture, providing competitive compensation and benefits programs and supporting employee career development and related management training. To that end, we continue to invest resources and energy into being an employer of choice – attracting and engaging individuals who are innovative, curious, driven, diligent, collaborative and of the highest integrity and ethics. Some of our key efforts in this area and management of our human capital assets generally are described here.

Compensation and Benefits

Our compensation philosophy is to provide pay and benefits that are competitive in the biotechnology and pharmaceutical industry where we compete for talent. We monitor our compensation programs closely and review them annually to provide what we consider a competitive mix of compensation and health, welfare and retirement benefits for all our employees. Our compensation package for all employees includes market-competitive base salaries, eligibility for annual performance bonuses and equity grants. Annual cash bonus opportunity and equity compensation increase as a percentage of total compensation based on level of responsibility. Any actual bonus payout is based on a combination of individual performance and corporate performance. All regular-status, full-time employees are eligible to participate in our comprehensive benefit program, pursuant to plan terms and conditions. Plan choices include medical, dental, vision, life insurance, flexible spending accounts, short and long-term disability insurance, a 401(k) retirement savings plan with a discretionary matching employer contribution, and an employee stock purchase plan. We also provide regular-status, full-time employees with a generous time off program that includes vacation, sick, holiday, and paid leave for certain life events.

Every year, we undertake a detailed review of our compensation by position and level and make adjustments necessary to ensure that we continue to provide competitive compensation. We publish pay ranges in all job postings for jobs as required by various states’ pay disclosure requirements.

Corporate Culture

We value an inclusive and diverse workplace because we believe that having a team of people with wide-ranging backgrounds, experiences, perspectives and skillsets enhances our corporate culture and is key to our long-term success. As of December 31, 2024, approximately 62% of our global workforce was women. In addition, 15% of our employees in managerial roles were women, and approximately 7% of our executive management, vice president and above, were women.

Our Code of Business Conduct and Ethics prohibits conduct that creates an intimidating, hostile or offensive work environment, and we are committed against workplace discrimination on any grounds, including disability, nationality, race and religion. As of December 31, 2024, approximately 31% of our employees were self-identified as non-white. In addition, during 2024, we furthered the development of our hybrid workforce program that provides a variety of virtual and in-person collaboration opportunities, such as leadership training and coaching

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resources. Since 2021, we have utilized a peer-centric employee recognition program to empower employees to champion our workplace culture and values, and promote direct praise to peers. In addition, we have implemented a reward program that enables managers to recognize employees who have demonstrated exceptional performance.

In addition, we pride ourselves on an open culture that respects co-workers, values employees’ health and well-being and fosters professional development. We support employee growth and development in a variety of ways, including with group training, individual mentoring and coaching, conference attendance and tuition reimbursement. Our management conducts annual employee engagement surveys and reports to our board of directors on human capital management topics, including corporate culture, employee development and retention, and compensation and benefits. Similarly, our board of directors regularly provides input on important decisions relating to these matters, including with respect to employee compensation and benefits, talent retention and development.

Environmental, Social and Governance (ESG) Efforts

Our commitment to corporate responsibility is integrated throughout our business and informed by our values and ambition to change lives by changing the course of blood cancer. To support blood cancer patients and to address the availability of medical treatment for lower income patients, we have established a patient support program intended to support lower income patients eligible to receive RYTELO. Our ESG initiatives reflect our commitment to making a difference for blood cancer patients and health care providers who care for them through RYTELO and our pipeline of investigational therapies to treat hematologic malignancies. Our ESG priorities also reflect our commitment to fostering a strong culture for employees and governing with integrity to advance our mission and create value for stockholders. We review our ESG practices and disclosures on an ongoing basis.

Communication and Engagement

We believe that part of what sets us apart from other companies is our culture and, in particular, our focus on providing timely and transparent communications and creating a strong sense of belonging and inclusiveness. We engage in periodic in-office and in-person meetings and interactions, as well as in-office and in-person training and development opportunities, to encourage cross-functional team-building and collaboration, in conjunction with which many of our teams engage in group lunches and dinners. We held a summer contest that encouraged our employees to share summer travel experiences and special events, building rapport and strengthening employee relationships, and we conduct organizational and team-specific holiday events to promote connectivity among our employees. We share information and news with employees through quarterly all-hands meetings, monthly newsletters to employees, social media posts on our intranet and outward facing social media sites, such as LinkedIn, and regular employee chats with our Chief Executive Officer and other members of senior management. We survey our employees each year to measure their level of engagement at the Company. Our employee engagement scores have remained relatively steady over the past three years. These surveys provide rich feedback each year that helps us to continue to grow our culture and make Geron a great place to work.

Health, Wellness and Safety

We offer benefits that promote our employees’ whole health and wellness, including reimbursement for certain wellness costs, external support from our employee assistance programs and mental wellness services, which covers therapy and/or coaching for our employees and their dependents, including high school and college-aged children.

None of our employees is subject to a collective bargaining agreement or represented by a trade or labor union. We consider our relations with our employees to be good.

Corporate and Available Information

Geron Corporation was incorporated in the State of Delaware on November 28, 1990. Geron UK Limited was incorporated in the United Kingdom on September 29, 2021. Geron Netherlands B.V. was incorporated in the Netherlands on February 17, 2023. Our principal executive offices are located at 919 E. Hillsdale Blvd., Suite 250, Foster City, CA 94404, and our telephone number is 650-473-7700. Our website address is http://www.geron.com.

We file or furnish electronically with the U.S. Securities and Exchange Commission, or the SEC, annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, or the Exchange Act.

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We make copies of these reports available free of charge through the “SEC Filings” tab on the “Investors & Media” page of our website as soon as reasonably practicable after we file or furnish them with the SEC.

Information contained on or accessible through our website is not incorporated into, and does not form a part of, this Report or any other report or document we file with the SEC, and any references to our website are intended to be inactive textual references only.

ITEM 1A. RISK FACTORS

We operate in a dynamic and rapidly changing environment involving numerous risks and uncertainties that may have a material adverse effect on our business, financial condition or results of operations. You should carefully consider the risks and uncertainties described below, together with all of the other information included in this Report. Our business faces significant risks and uncertainties, and those described below may not be the only risks and uncertainties we face. Additional risks and uncertainties not presently known to us or that we currently believe are immaterial may also significantly impair our business, financial condition or results of operations. If any of these risks or uncertainties occur, our business, financial condition or results of operations could suffer, the market price of our common stock could decline and you could lose all or part of your investment in our common stock.

Risks Related to THE Commercialization of RYTELO

Our near-term prospects are wholly dependent on RYTELO. We have limited experience with the commercialization of RYTELO, and if we are unable to successfully commercialize RYTELO in the U.S. for lower-risk MDS, or to expand its indication of use, our ability to generate meaningful revenue or achieve profitability will be materially and adversely affected.

In June 2024, we received FDA approval to commercialize RYTELO in the U.S. for certain patients with lower-risk MDS, and we initiated a commercial launch of RYTELO in the U.S. in that indication. RYTELO is our only product approved for marketing by the FDA, and our ability to generate revenue from product sales and achieve profitability is wholly dependent on our ability to successfully commercialize RYTELO in the U.S. for lower-risk MDS or to expand its indications of use. We may not be able to successfully commercialize RYTELO for a number of reasons, including:

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we may not be able to establish or demonstrate in the medical community the safety and efficacy of RYTELO and its potential advantages over and side effects compared to existing treatments;
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physicians may be reluctant to prescribe RYTELO until longer-term efficacy and safety data exists;
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our limited historical experience in marketing, selling and distributing RYTELO;
•
reimbursement and coverage policies of government and private payors such as Medicare, Medicaid, insurance companies, health maintenance organizations and other plan administrators;
•
the relative price of RYTELO as compared to alternative treatment options;
•
the relatively low incidence and prevalence of patients in RYTELO’s approved indication, including the reliability of our market and sales estimates;
•
future competitive or other market factors may adversely affect the commercial potential of RYTELO;
•
we may not be able to obtain and maintain regulatory approvals for RYTELO in any other jurisdictions or for any other indications, including in the EU for lower-risk MDS or in any other jurisdiction for relapsed/refractory MF;
•
changed or increased regulatory restrictions;
•
changes to the label for RYTELO that further restrict how we market and sell RYTELO, including adverse events observed in ongoing and future studies of imetelstat such as our Phase 3 IMpactMF clinical trial;

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•
the capabilities of third party manufacturers may adversely affect the success of our commercialization of RYTELO;
•
we may need additional financial or other resources to successfully commercialize RYTELO; and
•
we may not be able to maintain adequate commercial supplies of RYTELO to meet demand or at an acceptable cost or at all.

Moreover, successful commercialization of RYTELO may not generate sufficient revenue from product sales, and we may not become profitable in the near term, or at all. In any event, if we are unable to successfully commercialize RYTELO in the U.S. for lower-risk MDS, or to expand its indications of use, our ability to generate meaningful revenue from product sales and achieve profitability will be materially and adversely affected, which in turn would severely and adversely affect our financial results, business and business prospects, and might cause us to cease operations.

We have limited experience as a commercial company and our sales, marketing, and distribution of RYTELO may be unsuccessful or less successful than anticipated.

As a company, we have limited prior experience in selling and marketing or commercializing an approved drug product in the U.S., and we have no experience marketing or commercializing an approved drug outside of the U.S. The success of our commercialization efforts is subject to, among other things, managing our internal sales, marketing, and distribution capabilities and our ability to navigate the significant expenses and risks involved with the management of such capabilities. For example, our commercial launch of RYTELO in the U.S. may not continue as planned or anticipated, which may require us to, among others, adjust or amend our commercialization plan and incur significant expenses. Further, given our limited historical experience commercializing drug products, we do not have a track record of successfully executing a commercial launch. If we are unsuccessful in accomplishing our objectives or if our commercialization efforts do not continue as planned, we may not be able to successfully commercialize RYTELO in lower-risk MDS, we may require significant additional capital and financial resources, we may not become profitable, and we may not be able to compete against more established companies in our industry, any of which would severely and adversely affect our financial results, business and business prospects, and might cause us to cease operations.

If we are unable to continue to execute on our sales, marketing and distribution plans to commercialize RYTELO, we may be unable to generate meaningful product revenue.

To successfully commercialize RYTELO in the U.S., we need to continue to execute on our sales, marketing and distribution plans. The ongoing execution of our sales, marketing and distribution plans requires investment of capital and time, and we cannot be certain that we will be able to continue to execute on our plans successfully. In addition, we compete with many companies that currently have extensive, experienced and well-funded sales, distribution and marketing operations to recruit, hire, train and retain marketing and sales personnel. If we are unable to recruit as needed, and to retain and effectively train marketing and sales personnel and equip them with compliant and effective materials, our efforts to successfully commercialize RYTELO could be adversely affected.

We currently have no marketing or sales organization outside of the U.S., and as a company, we have no experience selling and marketing approved drugs outside of the U.S. To successfully commercialize RYTELO outside of the U.S, we will need to develop these capabilities, either on our own or with others, including third party contractors. Doing so will require additional investment of capital and time. We may seek strategic partnerships, collaborations, alliances or licensing arrangements, at an appropriate time, to assist us in the potential development and commercialization of RYTELO in the EU, or we may seek to self-commercialize and need to establish business operations in such regions. If we receive regulatory approval to commercialize RYTELO in any other regions, such as the EU, we may be unsuccessful in our efforts to recruit, hire, train and retain personnel to support such business operations; or we may be unable to enter into and conduct successful strategic partnerships, collaborations, alliances or licensing arrangements with third parties to commercialize RYTELO in such regions, should we seek to do so. Any failure or delay in the execution of our sales, marketing and distribution plans would adversely impact the commercialization of RYTELO outside the U.S.

Further, given our limited experience in marketing and selling RYTELO, our initial estimate of the size of the required sales force may be materially more or less than the size of the sales force actually required to effectively commercialize RYTELO. As such, we may be required to hire substantially more sales representatives and medical support liaisons to adequately support the commercialization of RYTELO, or we may incur excess costs as a result of hiring more sales representatives than necessary. With respect to certain geographical markets where RYTELO

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may be approved for marketing in the future, such as the EU, or any other regions where we might seek drug product approval for RYTELO, we may enter into arrangements with other entities to utilize their local marketing and distribution capabilities, but we may be unable to enter into such arrangements on favorable terms, if at all. If potential future partners do not commit sufficient resources to commercialize RYTELO and any future products, and we are unable to develop the necessary marketing capabilities on our own, we may be unable to generate sufficient product revenue to sustain our business. In any event, if we are unable to establish and maintain adequate sales and marketing capabilities for RYTELO, whether on our own or through collaborations, our results of operations may be negatively impacted. Any of the foregoing would negatively impact our business and business prospects, severely and adversely affect our financial results, and might cause us to cease operations.

If we do not obtain acceptable prices or adequate reimbursement for RYTELO, the use of RYTELO could be severely limited.

Our ability to successfully commercialize RYTELO will depend significantly on obtaining acceptable prices and the availability of coverage and adequate reimbursement to patients from third-party payors. Government payors, such as the Medicare and Medicaid programs, and other third-party payors, such as private health insurers and health maintenance organizations, determine which medications they will cover and the reimbursement levels. Although CMS assigned a permanent and product specific J-Code (J0870) for RYTELO, which became effective on January 1, 2025, until CMS and commercial payor systems are updated, physicians may continue to use the non-specific miscellaneous J-Code to bill third-party payors for RYTELO. Because miscellaneous J-Codes may be used for a wide variety of products, health plans may have more difficulty determining the actual product used and billed for the patient. These claims increase the provider administrative burden and must often be submitted with additional information and manually processed, which can delay claims processing times as well as increase the likelihood for claim denials and claim errors. Further, the resulting reimbursement payment rates may not be adequate or may require significant restrictions on use or increased co-payments from commercially insured patients that patients may find unacceptably high. Patients are unlikely to use RYTELO unless coverage is provided, and reimbursement is adequate to cover all or a significant portion of its cost. Therefore, coverage and adequate reimbursement will be critical to market acceptance of RYTELO.

In addition, government authorities and other third-party payors in the U.S. and other jurisdictions are developing increasingly sophisticated methods of controlling healthcare costs, such as by limiting coverage and the amount of reimbursement for particular medications. Increasingly, third-party payors are requiring that drug companies provide them with predetermined discounts from list prices as a condition of coverage, are using restrictive formularies and preferred drug lists to leverage greater discounts in competitive classes, and are challenging the prices charged for medical products. The Inflation Reduction Act of 2022 includes several provisions to lower prescription drug costs for people with Medicare and reduce drug spending by the federal government, which may ultimately have a negative effect on the pricing for RYTELO. However, the Medicare Drug Pricing Negotiation Program provisions of the law are currently subject to legal challenges. Further, no uniform policy requirement for coverage and reimbursement for drug products exists among third-party payors in the U.S. As a result, the coverage determination process is often a time-consuming and costly process that will require us to provide scientific and clinical support for the use of RYTELO to each payor separately, with no assurance that coverage and adequate reimbursement will be applied consistently or obtained in the first instance.

We cannot be sure that coverage and reimbursement will be available for RYTELO, and, if reimbursement is available, what the level of reimbursement will be. Although we have received a permanent and product-specific J-Code (J0870) for RYTELO which became effective on January 1, 2025, there may also be significant delays in obtaining coverage and reimbursement for newly approved drugs, and coverage may be more limited than the purposes for which the drug is approved by the FDA or similar international regulatory authorities. Coverage and reimbursement may impact the demand for, or the price of RYTELO, and reimbursement policies in the U.S. and other jurisdictions may evolve which may adversely impact our ability to successfully commercialize RYTELO. Even if favorable coverage and reimbursement status is attained for one or more products for which we receive regulatory approval, less favorable coverage policies and reimbursement rates may be implemented in the future. If coverage and reimbursement are not available or reimbursement is available only to limited levels, we may not be able to successfully commercialize RYTELO, which would negatively impact our business and business prospects.

To be commercially successful, RYTELO must be accepted by the healthcare community, which can be slow to adopt or unreceptive to new technologies and products.

RYTELO may not achieve market acceptance in the U.S. for lower-risk MDS or any other indication that might be approved by the FDA in the future, or achieve the potential international revenue we believe may be possible if RYTELO is approved outside the U.S., since hospitals, physicians, patients or the medical community in general may decide not to accept and utilize RYTELO. RYTELO competes with a number of conventional and

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widely accepted drugs and therapies manufactured and marketed by major pharmaceutical companies. The degree of market acceptance of RYTELO depends on a number of factors, including:

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the clinical indications for which RYTELO is or may in the future be approved;
•
the establishment and demonstration to the medical community of the clinical efficacy and safety of RYTELO;
•
the ability to demonstrate that RYTELO is superior to alternatives on the market at the time, including with respect to efficacy, safety, cost or route of administration;
•
the willingness of medical professionals to prescribe, and patients to use, RYTELO, or to continue to use RYTELO;
•
the publication of unfavorable safety or efficacy data concerning RYTELO by third parties or us;
•
restrictions on use of RYTELO alone or in combination with other products;
•
the label and promotional claims allowed by the FDA for RYTELO, as well as any such claims allowed by similar international regulatory authorities for RYTELO, if any, including usage for only certain indications and any limitations or warnings about the prevalence or severity of any side effects;
•
the timing of market introduction of RYTELO as well as competitive products, including sequencing of available products;
•
the effectiveness of sales, marketing and distribution support for RYTELO;
•
the ability of the third party distributors and specialty pharmacies we contract with to process prescriptions and dispense RYTELO and the processes required to place orders with such distributors and specialty pharmacies;
•
the extent to which RYTELO is approved for inclusion on formularies in hospitals and managed care organizations;
•
the pricing of RYTELO, both in absolute terms and relative to alternative treatments;
•
the availability of coverage and adequate reimbursement by government and third-party payors; and
•
the willingness of patients to pay out-of-pocket in the absence of coverage by third-party payors, including governmental authorities.

We may be unable to demonstrate any therapeutic or economic advantage for RYTELO compared to established or standard-of-care therapies, or newly developed therapies, for myeloid hematologic malignancies. National health insurance and/or third-party payors may decide that any potential benefit that RYTELO may provide to clinical outcomes in myeloid hematologic malignancies is not adequate to justify the potential adverse effects or the costs of treatment with RYTELO. If the healthcare community does not accept RYTELO for any of the foregoing reasons, or for any other reasons, our ability to commercialize RYTELO in the U.S. for lower-risk MDS or for any other indications for which RYTELO may be approved, may be negatively impacted or precluded altogether, which would seriously and adversely affect our business and business prospects.

If the market opportunities for RYTELO are smaller than we believe, our revenue may be adversely affected, and our business may suffer.

We are commercializing RYTELO in lower-risk MDS, and the addressable patient population in lower-risk MDS is based on our estimates. These estimates, which have been derived from a variety of sources, including scientific literature, surveys of clinics, patient foundations and market research, may prove to be incorrect. Further, new information from us or others may change the estimated incidence or prevalence of patients with lower-risk MDS in the U.S. or the EU. Additionally, the potentially addressable patient population for RYTELO may not ultimately be amenable to treatment with RYTELO, or we may be unable to successfully identify patients and achieve a significant market share in RYTELO’s approved indication, or initial sales of RYTELO may deplete the prevalence pool of patients in the RYTELO’s approved indication more quickly than expected, which would have a negative impact on sales of RYTELO in the future. Our commercialization of RYTELO in the U.S. is limited to certain patients with lower-risk MDS, and any future potential commercialization will be limited to the therapeutic indications examined in our clinical trials and as determined by the FDA and similar international regulatory

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authorities, which would not permit us to market RYTELO for any other indications not expressly approved by those regulatory authorities. Future regulatory approvals for RYTELO, if any, could be conditioned upon label restrictions that materially limit the addressable patient population.

Our market opportunity may also be limited by the pricing, reimbursement and access we are able to achieve for RYTELO, the quality and expiration of our intellectual property rights and regulatory exclusivity, duration of RYTELO treatment in lower-risk MDS and future competitor treatments that enter the market. If any of our estimates prove to be inaccurate, the market opportunities for RYTELO that we or any potential future collaborative partners develop could be significantly diminished, which would have a material adverse impact on our business and business prospects, and would adversely affect our ability to achieve profitability.

If competitors develop products, product candidates or technologies that are superior to or more cost-effective than RYTELO, it would significantly impact the development and commercial viability of RYTELO, which would severely and adversely affect our financial results, business and business prospects, and the future of RYTELO, and might cause us to cease operations.

The pharmaceutical and biotechnology industries are characterized by intense and dynamic competition with rapidly advancing technologies and a strong emphasis on proprietary products. While we believe our proprietary oligonucleotide chemistry; experience with the biological mechanisms related to RYTELO, telomeres and telomerase; clinical data to date indicating potential disease-modifying activity with RYTELO treatment; and knowledge and expertise around the development of potential treatments for myeloid hematologic malignancies provide us with competitive advantages, we face competition from many different sources, including major pharmaceutical, specialty pharmaceutical and biotechnology companies, academic institutions, governmental agencies, and public and private research institutions. RYTELO competes with other products and therapies that currently exist, are being developed or will in the future be developed, some of which we may not currently be aware of. A discussion of current and potential future competitors of RYTELO can be found in the sub‑section entitled “Competition” in Part I, Item 1, entitled “Business” and elsewhere in this Report. ﻿

Many of our competitors, either alone or with their strategic partners, could have substantially greater financial, technical and human resources than we do and significantly greater experience in obtaining FDA and other regulatory approvals of treatments and commercializing those treatments. We believe that the commercial success of RYTELO is subject to a number of factors, including: product efficacy and safety; method of product administration; cost of manufacturing; the timing and scope of regulatory consents; status of coverage and reimbursement; price; the level of generic competition; and our patent and regulatory exclusivity position.

Smaller companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies. We anticipate increased competition in the future as new companies explore treatments for myeloid hematologic malignancies, which may significantly impact the commercial viability of RYTELO. Academic institutions, government agencies and other public and private research organizations may also conduct research, seek patent protection and establish collaborative arrangements for research, clinical development and marketing of products similar to RYTELO. These companies and institutions compete with us in recruiting and retaining qualified development and management personnel as well as in acquiring technologies complementary to the RYTELO program.

As a result of the foregoing, competitors may develop more commercially desirable or affordable products than RYTELO or achieve earlier patent protection or product commercialization than we may be able to achieve with RYTELO. Competitors have developed, or are in the process of developing, technologies that are, or in the future may be, competitive to RYTELO. Some of these products may have an entirely different approach or means of accomplishing therapeutic effects similar or superior to those that may be demonstrated by RYTELO. Competitors may develop products that are safer, more effective, or less costly than RYTELO, or more convenient to administer to patients and, therefore, present a serious competitive threat to RYTELO. In addition, competitors may price their products below what we may determine to be an acceptable price for RYTELO, may receive better third-party payor coverage and/or reimbursement, or may be more cost-effective than RYTELO. Such competitive products or activities by competitors may render RYTELO obsolete, which may cause us to cease any further development or future commercialization of RYTELO, which would severely and adversely affect our financial results, business and business prospects, and the future of RYTELO, and might cause us to cease operations.

We rely on a select network of third party distributors, specialty pharmacies and other vendors to distribute RYTELO in the U.S., and any failure by such distributors, specialty pharmacies and vendors could adversely affect our revenues, financial condition, or results of operations.

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We rely on a select network of third party distributors, specialty pharmacies and other vendors to distribute RYTELO in the U.S., and the financial failure of any of these parties could adversely affect our revenues, financial condition or results of operations. We rely on such distributors and specialty pharmacies to effectively distribute RYTELO in a timely manner, provide certain patient support services, manage prescription intake, collect accurate patient and inventory data and collect payments from payors. While we have entered into agreements with each of these parties, they may not perform as agreed, our strategic priorities may change or they may terminate their agreements with us. Further, an inability by our distributors or specialty pharmacies to meet our patients’ needs may lead to reputational harm or patient loss. In the event that such network fails to properly meet our or our patients’ needs, we may need to partner with other distributors, specialty pharmacies or vendors to replace or supplement our current network and there is no guarantee that we will be able to do so on commercially reasonable terms or at all.

We are seeking regulatory approval to commercialize RYTELO in the EU, and any such approval, if received, will be subject to pricing, drug marketing, post-market and reimbursement regulations in the EU, which may materially affect our ability to commercialize and receive reimbursement coverage for RYTELO in the EU.

We are seeking approval to market RYTELO in the EU for lower-risk MDS. Even if we obtain approval for RYTELO in the EU, the competent regulatory authorities may still impose significant restrictions on the indicated uses or marketing of our product or impose ongoing requirements for potentially costly post-approval studies, post-market surveillance or patient or drug restrictions. We will also be subject to rules and regulations in the EU applicable to the manufacturing, marketing, promotion and sale of medicinal products. If we or a regulatory authority discovers previously unknown problems with RYTELO, such as adverse events of unanticipated severity or frequency, or problems with a facility where RYTELO is manufactured, a regulatory authority may impose restrictions relative to RYTELO or the manufacturing facility, including requiring recall or withdrawal of RYTELO from the market or suspension of manufacturing. Moreover, product labeling, advertising and promotion for RYTELO will be subject to regulatory requirements and continuing regulatory review.

Failure to comply with EU and EU Member State laws that apply to the conduct of clinical trials, manufacturing approval, marketing authorization of medicinal products and marketing of such products, both before and after grant of the marketing authorization, or with other applicable regulatory requirements may result in administrative, civil or criminal penalties. These penalties could include delays or refusal to authorize the conduct of clinical trials, or to grant marketing authorization, product withdrawals and recalls, product seizures, suspension, withdrawal or variation of the marketing authorization, total or partial suspension of production, distribution, manufacturing or clinical trials, operating restrictions, injunctions, suspension of licenses, fines and criminal penalties.

In addition, the pricing of RYTELO will be subject to governmental control and other market regulations which could put pressure on the pricing and usage of RYTELO. In the EU, pricing negotiations with governmental authorities can take considerable time after obtaining marketing approval of a product candidate. In addition, if approved, market acceptance and sales of RYTELO will depend significantly on the availability of adequate coverage and reimbursement from third-party payors for RYTELO and may be affected by existing and future healthcare reform measures.

The requirements governing drug pricing and reimbursement vary widely from country to country. For example, the EU provides options for its member states to restrict the range of medicinal products for which their national health insurance systems provide reimbursement and to control the prices of medicinal products for human use. Reference pricing used by various EU Member States and parallel distribution, or arbitrage between low-priced and high-priced EU Member States, can further reduce prices. An EU Member State may approve a specific price for the medicinal product or it may instead adopt a system of direct or indirect controls on the profitability of the company placing the medicinal product on the market. If RYTELO is approved for commercialization in the EU, in some countries we may be required to conduct a clinical study or other studies that compare the cost-effectiveness of RYTELO to other available therapies in order to obtain or maintain reimbursement or pricing approval. There can be no assurance that any country that has price controls or reimbursement limitations for biopharmaceutical products will allow favorable reimbursement and pricing arrangements for RYTELO, if it is approved for marketing in the EU. Historically, products launched in the EU do not follow price structures of the U.S. and generally prices tend to be significantly lower. Publication of discounts by third-party payors or authorities may lead to further pressure on the prices or reimbursement levels within the country of publication and other countries. If pricing is set at unsatisfactory levels or if reimbursement of RYTELO is unavailable or limited in scope or amount, our revenues from sales and the potential profitability of RYTELO in those countries would be negatively affected.

Much like the federal Anti-Kickback Statute prohibition in the U.S., the provision of benefits or advantages to physicians and other healthcare professionals to induce or encourage the prescription, recommendation, endorsement, purchase, supply, order or use of medicinal products is also prohibited in the EU. Interactions between

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pharmaceutical companies and health care professionals are governed by strict laws, such as national anti-bribery laws of European countries, national sunshine rules, regulations, industry self-regulation codes of conduct and physicians’ codes of professional conduct. Failure to comply with these requirements could result in reputational risk, public reprimands, administrative penalties, fines or imprisonment. Infringement of related laws could result in substantial fines and imprisonment.

Payments made to physicians and other healthcare professionals in certain EU Member States must be publicly disclosed. Moreover, agreements with physicians may require prior notification or approval by the physician’s or healthcare professional’s employer, his or her competent professional organization and/or the regulatory authorities of the individual EU Member States. These requirements are provided in the national laws, industry codes or professional codes of conduct, applicable in the EU Member States. Failure to comply with these requirements could result in reputational risk, public reprimands, administrative penalties, fines or imprisonment.

RISKS RELATED TO REGULATORY APPROVAL OF RYTELO

We may be unable to maintain regulatory approval for RYTELO in the U.S. for lower-risk MDS, which would severely and adversely affect our business and business prospects, and might cause us to cease operations.

In June 2024, we received regulatory approval from the FDA to commercialize RYTELO in the U.S. in certain patients with lower-risk MDS. Federal, state and local governments in the U.S. have significant regulations in place that may limit or prevent us from successfully commercializing RYTELO for lower-risk MDS. We do not currently have regulatory approval for RYTELO in any other jurisdiction or for any other indication, and governments in other jurisdictions have significant regulations that may limit or prevent us from successfully commercializing RYTELO in other jurisdictions. Failure to maintain regulatory approval for RYTELO for lower-risk MDS, or delays in obtaining, failure to obtain, or limitations in the scope of such approvals in any other jurisdictions or for any other indications, could:

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result in a withdrawal of RYTELO from the market or could otherwise delay, limit or preclude any revenue we may receive from the commercialization of RYTELO for lower-risk MDS;
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significantly harm the commercial potential of RYTELO;
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impede, halt or increase the costs of our activities and plans for clinical development;
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diminish any competitive advantages that may have been available to us; or
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delay or preclude any revenue we may receive from the future commercialization of RYTELO in any other jurisdictions or for any other indications, if any.

In addition, approved products and their manufacturers, together with other vendors involved in the commercialization process, are subject to continual review, and discovery of previously unknown problems with a product or its manufacturer may result in restrictions on the product or manufacturer, including import restrictions, seizure and withdrawal of the product from the market.

Commercialization and sales of RYTELO are subject to government regulations related to numerous matters, including the processes of:

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manufacturing;
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advertising and promoting;
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selling and marketing;
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medical information;
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labeling; and
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distribution.

If, and to the extent that, we are unable to comply with these regulations, our ability to earn revenue from the commercialization of RYTELO will be materially and adversely impacted.

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Further, if RYTELO causes serious or unexpected side effects, or if other safety risks are observed as a result of our commercialization efforts for RYTELO in lower-risk MDS or in current or potential future clinical trials, a number of potential significant negative consequences could result, including:

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regulatory authorities may withdraw approval of RYTELO;
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we may be required to recall RYTELO, seek to change the way it is administered, conduct additional clinical trials or change the labeling of the product;
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regulatory authorities may require revisions to the labeling of RYTELO, including limitations on approved uses or the addition of further warnings, contraindications or other safety information, or may impose restrictions on distribution in the form of additional requirements in a risk evaluation and management plan or risk management plan;
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we may experience manufacturing delays and supply disruptions if regulatory inspectors identify regulatory noncompliance by third-party manufacturers requiring remediation;
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RYTELO may be rendered less competitive and sales, if any, may decrease;
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our reputation may suffer generally both among clinicians and patients;
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we may be exposed to potential lawsuits and associated legal expenses, including costs of resolving claims;
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regulatory authorities may refuse to approve pending applications or supplements to approved applications filed by us, or may suspend or revoke license approvals; or
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we may be required to change or stop ongoing clinical trials of RYTELO (imetelstat), which would negatively impact the development of RYTELO (imetelstat) for other potential indications.

Any of these events could prevent us from achieving or maintaining market acceptance for RYTELO, could substantially increase the costs and expenses of commercializing RYTELO, or could limit its commercial potential, which in turn could delay or prevent us from generating any meaningful revenues from the sale of the RYTELO. If RYTELO is approved outside the U.S., we will be subject to similar requirements, considerations and risks in other regions.

Our regulatory approval for RYTELO in the U.S. for lower-risk MDS is subject to post-marketing requirements and commitments, and we may be subject to penalties or product withdrawal if we fail to comply with these regulatory requirements and commitments or if we experience unanticipated problems with RYTELO.

Our regulatory approval for RYTELO in lower-risk MDS is subject to non-clinical, clinical and manufacturing post-marketing requirements and commitments, including the requirement of continuing to assess long-term safety of RYTELO (imetelstat) in the IMerge trial and a clinical trial to evaluate alternative dosing regimens in lower-risk MDS, with timelines for completion and reporting established by the FDA. In addition, RYTELO and the manufacturing processes and facilities, post-approval clinical data, labeling, advertising and promotional activities related to RYTELO will be subject to continual requirements of, and review by, the FDA and comparable regulatory authorities. These requirements include submissions of safety and other post-marketing information and reports, compliance with good pharmacovigilance practices, registration requirements, current Good Manufacturing Practice, or cGMP, requirements relating to quality control, quality assurance and corresponding maintenance of records and documents, and requirements regarding promotional interactions with healthcare professionals.

Failure to comply with these post-marketing requirements and commitments or any other regulatory requirements, or later discovery of previously unknown problems with RYTELO, or our manufacturers, or manufacturing processes for RYTELO, may result in actions such as:

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restrictions on RYTELO manufacturing, distribution or use;
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restrictions on labeling or marketing;
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additional post-marketing requirements or commitments; warning letters, withdrawal of RYTELO from the market;
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product recalls;

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•
suspension or termination of ongoing clinical trials of imetelstat in other indications;
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significant civil, criminal and administrative penalties, including fines, restitutions or disgorgement of profits or revenues;
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refusal to permit the import or export of RYTELO;
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product seizure or detentions; injunctions or the imposition of civil or criminal penalties; and
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adverse publicity.

Any government investigation of alleged violations of law could require us to expend significant time and resources in response and could generate negative publicity. In addition, the regulations, policies or guidance of the FDA or any other regulatory authority may change and new or additional statutes or government regulations may be enacted that could prevent or delay regulatory approval of our product candidates or further restrict or regulate post-approval activities. We also cannot predict the likelihood, nature, or extent of adverse government regulation that may arise from pending or future legislation or administrative action, either in the United States or abroad.

If we are unable to fulfill the post-marketing requirements and commitments established by the FDA for RYTELO in lower-risk MDS, or that may be applied to the approval and commercialization of RYTELO by any regulatory authority, or are unable to adapt to changes in existing regulatory requirements or adoption of new regulatory requirements or policies, there may be a negative impact to our business and continued regulatory approval of RYTELO. Under such circumstances, we or our respective service providers may be subject to the actions listed above, including losing marketing approval for RYTELO, which would severely and adversely affect our business and business prospects, and might cause us to cease operations. If RYTELO is approved outside the U.S., we will be subject to similar requirements, considerations and risks in other regions.

We may be unable to obtain regulatory approval to commercialize RYTELO in any other jurisdictions or for any new indications, or may experience significant delays in doing so, any of which could severely and adversely affect our business and business prospects, and might cause us to cease operations.

We may never receive regulatory approval for RYTELO in any other jurisdictions or for any new indications. It can take many years to obtain approval, if approval is obtained at all. Of the large number of drugs in development, only a small percentage complete the development and regulatory approval process and are successfully commercialized. In addition, the lengthy review process and the unpredictability of future or ongoing clinical trials may result in a delay in obtaining, or our failure to obtain, regulatory approval for RYTELO in lower-risk MDS in any jurisdiction other than the U.S., or our inability to obtain regulatory approval for RYTELO for relapsed/refractory MF or for any other indications, which could significantly harm our business and business prospects, and might cause us to cease operations.

Securing marketing approval requires the submission of extensive non-clinical and clinical data and supporting information to regulatory authorities for each therapeutic indication to establish to the satisfaction of such regulatory authorities the product candidate’s safety and efficacy, as well as information about the product manufacturing process and any inspections of manufacturing facilities conducted by regulatory authorities through the filing of an NDA in the U.S. and an MAA in the EU. Although RYTELO is approved in the U.S. in lower-risk MDS and the EMA is reviewing our MAA for RYTELO for lower-risk MDS, there can be no assurance that we will receive regulatory approval from the EC for the commercialization of RYTELO for lower-risk MDS or in any other jurisdiction or for any new indications.

Any marketing approval that we may receive for RYTELO in the EU for lower-risk MDS, or in any other jurisdiction or for any other indication may also be limited or subject to restrictions or post-approval commitments that increase our costs or render RYTELO not commercially viable, which would harm our business and business prospects.

Regulatory authorities may also not approve the labeling claims that are necessary or desirable for the successful commercialization of a drug, such as RYTELO. For example, although we received regulatory approval from the FDA in June 2024 to commercialize RYTELO in lower-risk MDS, any future regulatory clearances that we might obtain for RYTELO may be limited to fewer or narrower indications than we might request, or may be granted subject to the performance of post-marketing studies, which may impose further requirements or restrictions on the distribution or use of RYTELO, such as limiting prescribing to certain physicians or medical centers that have undergone specialized training, limiting treatment to patients who meet certain safe-use criteria, and requiring treated patients to enroll in a registry. These limitations and restrictions may limit the size of the market for

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RYTELO and affect reimbursement by third-party payors. Future regulatory clearances, if any, may be limited to a smaller patient population, or may require a different drug formulation or a different manufacturing process, than we might in the future decide to seek.

Any delay in obtaining or failure to obtain required approvals of RYTELO in any other jurisdictions or for any other indications, or limitations on any regulatory approval that we might receive in the future, if any, could reduce the potential commercial use of RYTELO, and potential market demand for RYTELO and therefore result in decreased revenue for us from any commercialization of RYTELO in any other jurisdictions or for any other indications, any of which could severely and adversely affect our financial results and ability to raise additional capital, if needed, the price of our common stock, our business and business prospects, and might cause us to cease operations.

We may experience additional risks related to operating outside of the U.S. that could materially adversely affect our business.

We have employees located outside of the U.S., conduct clinical trials outside of the U.S., and are seeking to obtain regulatory approval to market RYTELO in the EU, which may subject us to additional risks related to operating outside of the U.S., such as:

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the EC and other foreign regulatory approvals, if any, may take longer and be more costly to obtain than approvals in the U.S., due to differing regulatory requirements in foreign countries;
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approval policies or regulations in the EU or of regulatory authorities outside of the U.S. may significantly change in a manner rendering our clinical data insufficient for potential approval;
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the EMA and other regulatory authorities outside of the U.S. may disagree with the design, implementation or results of our clinical trials or our interpretation of data from nonclinical studies or clinical trials;
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we may experience unexpected changes in tariffs, trade barriers, price and exchange controls and other regulatory requirements;
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risks of potential noncompliance with legal requirements applicable to privacy, data protection, information security and other matters;
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risks of potential noncompliance with tax, employment, immigration and labor laws for employees living or traveling abroad;
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increased taxes outside of the U.S., including withholding and payroll taxes;
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significant foreign currency fluctuations, which could result in increased operating expenses and reduced revenue, and other obligations incident to doing business in another country;
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difficulties staffing and managing operations outside of the U.S.;
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complexities associated with managing multiple payor reimbursement regimes and government payors in foreign countries;
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workforce uncertainty in countries where labor unrest is more common than in the U.S.;
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potential liability under the Foreign Corrupt Practices Act of 1977 or comparable regulations outside of the U.S.; and
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business interruptions resulting from geopolitical actions, including war and terrorism.

For example, the new Trump administration has called for substantial changes to foreign trade policy and has raised the possibility of imposing significant increases in tariffs on international trade. We cannot predict what effects these and potential additional tariffs will have on our business, including in the context of escalating global trade and political tensions. However, such tariffs and other trade restrictions could increase our cost of doing business, reduce our gross margins or otherwise negatively impact our financial results.

These and other risks associated with international operations may materially adversely affect our ability to attain or maintain profitable operations.

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Uncertainty in the regulatory framework and future legislation could lead to disruption in the execution of international multi-center clinical trials, the monitoring of adverse events through pharmacovigilance programs, the evaluation of the benefit-risk profiles of new medicinal products, and determination of marketing authorization across different jurisdictions. Changes to existing regulations may add considerably to the time from clinical development to marketing authorization and commercialization of products in foreign jurisdictions and increase our costs. We cannot predict the impact of such changes and future regulation on our business or the results of our operations.

Although orphan drug designation has been granted to RYTELO for the treatment of MDS and MF in the U.S. and in the EU, these designations may not be maintained, which would eliminate the benefits associated with orphan drug designation, including market exclusivity, which could limit the period of exclusivity we are able to maintain for the commercialization of RYTELO, and would likely harm our business and business prospects.

The FDA granted orphan drug designation to RYTELO in June 2015 for the treatment of MF and for the treatment of MDS in December 2015, and the EC granted orphan drug designation in December 2015 to RYTELO for the treatment of MF and in July 2020 for the treatment of MDS. Orphan drug exclusivity confers seven and 10 years of exclusivity in the U.S. and EU, respectively, following approval, subject to satisfying regulatory requirements. The FDA has confirmed seven years of orphan drug exclusivity for RYTELO following its approval on June 6, 2024 for its approved indication in lower-risk MDS. As part of its review of our MAA for RYTELO, the EMA reviewed the grant of orphan drug designation for the treatment of certain patients with MDS. Designation as an orphan drug does not guarantee that any regulatory authority will accelerate regulatory review of, or ultimately approve, RYTELO for any indication, or at all, in the U.S., EU or any other country, nor does it limit the ability of any regulatory authority to grant orphan drug designation to product candidates of other companies that treat the same indications as RYTELO prior to RYTELO receiving any exclusive marketing approval.

We may lose orphan drug exclusivity for certain reasons, including if the FDA or the EMA determines that the request for orphan drug designation was materially defective or if we cannot ensure sufficient quantities of RYTELO to meet the needs of patients with lower-risk MDS or MF. Failure to maintain orphan designation status, or failure to agree to and complete any agreed upon pediatric plan, would lead to the inability to obtain or the loss of such regulatory exclusivity.

Even if we maintain orphan drug exclusivity for RYTELO, the exclusivity may not effectively protect RYTELO from all competition because different drugs with different active moieties can be approved for the same condition. Even after an orphan drug product is approved, the FDA or other regulatory authorities can subsequently approve a different drug with the same active moiety for the same condition, if the FDA or other regulatory authorities conclude that the later drug is safer, more effective, or makes a major contribution to patient care. The occurrence of any of these events could limit the period of exclusivity we are able to maintain for RYTELO, and may harm our business and business prospects. In addition, for any other indication that we are currently or may in the future seek to develop or obtain regulatory approval for RYTELO, orphan drug designation will neither shorten the development time nor regulatory review time for RYTELO, and it does not give RYTELO any advantage in the regulatory review or approval process.

Even though we reported positive top-line results from IMerge Phase 3 in January 2023 and received regulatory approval from the FDA in June 2024 to commercialize RYTELO in the U.S. for lower-risk MDS, the top-line results from IMerge Phase 3 are not necessarily predictive of RYTELO’s activity in other indications, such as from IMpactMF.

Even though we reported positive top-line results from IMerge Phase 3 in January 2023 and received regulatory approval from the FDA in June 2024 to commercialize RYTELO in lower-risk MDS, the top-line results from IMerge Phase 3 are not necessarily predictive of RYTELO’s activity in other indications and for other pivotal trials that may be needed to support any application to the FDA or similar international regulatory authorities for such other indications, such as from IMpactMF.

In addition, with respect to the trial design for IMpactMF, the FDA urged us to consider adding a third dosing arm to the trial to assess a lower dose and/or a more frequent dosing schedule that might improve the trial’s chance of success by identifying a less toxic regimen and/or more effective spleen response, one of the trial’s secondary endpoints. Based on data from IMbark, we believe that testing a lower dose regimen would likely result in a lower median OS, which is the trial’s primary endpoint, in the imetelstat treatment arm. Existing data also suggest that lowering the dose would not result in a clinically meaningful reduction in toxicity, and for these reasons we determined not to add a third dosing arm to the trial design and the FDA did not object to our proposed imetelstat sodium dose and schedule of 9.4 mg/kg every three weeks. Our belief may ultimately be incorrect. Therefore, our

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failure to add a third dosing arm could result in a failure to maintain regulatory clearance from the FDA and similar international regulatory authorities for relapsed/refractory MF, could result in the trial’s failure, or could otherwise delay, limit or prevent marketing approval of imetelstat for relapsed/refractory MF by the FDA or similar international regulatory authorities.

Regulatory authorities have substantial discretion in the approval process and can delay, limit or deny approval of RYTELO in other jurisdictions or indications, or require us to conduct additional non-clinical or clinical testing or abandon a program for many reasons, including:

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disagreement with the design or implementation of our clinical trials, including our statistical analysis of trial results;
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failure to demonstrate that RYTELO’s efficacy results provide sufficient evidence of overall clinical benefit;
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unfavorable benefit-to-risk assessment, in the case of marginal efficacy and/or clinically relevant safety concerns, for any proposed indication;
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serious and unexpected drug-related side effects experienced by participants in our clinical trials or by individuals using RYTELO or drugs similar to RYTELO;
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disagreement with our interpretation of data from non-clinical studies or clinical trials;
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rejection by the FDA of foreign data included in any future supplemental NDA, or sNDA, submissions for any future indications and the non-applicability of this data to the U.S. population and U.S. medical practice;
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identification of critical issues as a result of a pre-approval health authority inspection that could negatively impact the integrity of data in the MAA and any future sNDA and lead to a rejection by the FDA, EMA, or similar international regulatory authorities;
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a determination by international regulatory authorities that regulatory approval for RYTELO should be narrowed or made more restrictive than our current approval in the U.S. for lower-risk MDS or any future indication for which approval is sought, if any;
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disagreement regarding the formulation, labeling and/or the specifications for RYTELO;
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the failure of the quality or stability of RYTELO to meet acceptable regulatory standards;
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the EMA or the competent authorities of the individual EU Member States or similar international regulatory authorities may lack resources or be delayed in conducting pre-approval inspections due to lack of resources or other reasons;
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we or any third-party service providers may be unable to demonstrate compliance with GMP, GCP, or other applicable regulatory and other requirements to the satisfaction of the FDA, the EMA, the competent authorities of the individual EU Member States or similar international regulatory authorities; or
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changes in regulatory policies or approval processes, or potential reduction of unmet medical need with the entry of competitive therapies to the market, could render our clinical efficacy or safety data insufficient for approval.

Any of these events may result in a failure to further develop, obtain regulatory approval for or commercialize RYTELO in any jurisdiction or in any indication other than lower-risk MDS in the U.S., which could severely and adversely affect our business and business prospects.

Furthermore, in recent years, there has been increased public and political scrutiny on the FDA and similar international regulatory authorities with respect to the approval process for new drugs, and as a result regulatory authorities may apply more stringent regulatory standards, especially regarding drug safety, when reviewing regulatory submissions.

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RISKS RELATED TO COMPLIANCE WITH HEALTHCARE LAWS

The FDA, DOJ and other regulatory authorities actively enforce regulations related to the promotion and advertisement of pharmaceutical products, and if we were found to have violated the Food, Drug and Cosmetic Act, we could be subject to significant civil, criminal and administrative penalties.

The FDA strictly regulates the promotional claims that may be made about drug products. In particular, a product may not be promoted for uses that are not approved by the FDA as reflected in the product’s approved labeling. The FDA, DOJ and other agencies actively enforce regulations related to the promotion and advertisement of pharmaceutical products. If we were found to have violated the Food, Drug, and Cosmetic Act, we could be subject to significant civil, criminal and administrative penalties, which could inhibit our ability to commercialize RYTELO and generate revenue, require us to expend significant time and resources in response, and generate negative publicity. Enforcement actions include, among others:

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adverse regulatory inspection findings;
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fines, warning letters, or untitled letters;
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voluntary or mandatory product recalls or public notification or medical product safety alerts to healthcare professionals;
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restrictions on, or prohibitions against, marketing RYTELO;
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restrictions on, or prohibitions against, importation or exportation of RYTELO;
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suspension of review or refusal to approve pending applications or supplements to approved applications;
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exclusion from participation in government-funded healthcare programs;
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exclusion from eligibility for the award of government contracts for RYTELO;
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suspension or withdrawal of regulatory approval for RYTELO;
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product seizures;
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injunctions; and
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civil and criminal penalties and fines.

The imposition of any of these penalties or other commercial limitations, including equivalent penalties or commercial limitations imposed by foreign regulatory authorities, could severely and adversely affect our financial results, business and business prospects, including the commercialization of RYTELO, and might cause us to cease operations. Similar requirements and related consequences apply outside the U.S.

Enhanced governmental and private scrutiny over, or investigations or litigation involving, pharmaceutical manufacturer donations to patient assistance programs offered by charitable foundations may require us to modify our programs and could negatively impact our business practices, harm our reputation, divert the attention of management and increase our expenses.

To help patients afford our products, we have a patient assistance program and also occasionally make donations to independent charitable foundations that help financially needy patients. These types of programs designed to assist patients in affording pharmaceuticals have become the subject of scrutiny. In recent years, some pharmaceutical manufacturers were named in class action lawsuits challenging the legality of their patient assistance programs and support of independent charitable patient support foundations under a variety of federal and state laws. At least one insurer also has directed its network pharmacies to no longer accept manufacturer co-payment coupons for certain specialty drugs the insurer identified.

Our patient assistance program and support of independent charitable foundations could become the target of similar litigation. In addition, there has been regulatory review and enhanced government scrutiny of donations by pharmaceutical companies to patient assistance programs operated by charitable foundations. For example, the

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Office of Inspector General of the U.S. Department of Health & Human Services, or OIG, has established specific guidelines permitting pharmaceutical manufacturers to make donations to charitable organizations who provide co-pay assistance to Medicare patients, provided that such organizations are bona fide charities, are entirely independent of and not controlled by the manufacturer, provide aid to applicants on a first-come basis according to consistent financial criteria, and do not link aid to use of a donor’s product. If we or our vendors or donation recipients are deemed to fail to comply with laws or regulations in the operation of these programs, we could be subject to damages, fines, penalties or other criminal, civil or administrative sanctions or enforcement actions. We cannot ensure that our compliance controls, policies and procedures will be sufficient to protect against acts of our employees, business partners or vendors that may violate the laws or regulations of the jurisdictions in which we operate. A government investigation could negatively impact our business practices, harm our reputation, divert the attention of management and increase our expenses.

If our business activities become subject to challenge under supranational, national, federal, state or international healthcare laws, including fraud and abuse, transparency, and health information privacy and security laws, we could face substantial penalties and our business, results of operations, financial condition and prospects could be adversely affected.

Our business operations and current and future arrangements with investigators, healthcare professionals, consultants, third-party payors and customers, may expose us to broadly applicable fraud and abuse and other healthcare laws and regulations, including federal and state fraud and abuse laws, including anti-kickback and false claims laws; data privacy and security laws, including the Health Insurance Portability and Accountability Act, or HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act, or HITECH; and transparency laws related to payments and/or other transfers of value made to physicians, other healthcare professionals and teaching hospitals. These laws may constrain the business or financial arrangements and relationships through which we conduct our operations, including how we market, sell and distribute RYTELO. For details regarding the restrictions under applicable federal and state healthcare laws and regulations that may affect our ability to operate, see Item 1 “Business-Government Regulation- Fraud and Abuse, and Transparency Laws and Regulations” of this Report.

Federal and state enforcement bodies have increased their scrutiny of interactions between healthcare companies and healthcare providers, which has led to a number of investigations, prosecutions, convictions and settlements in the healthcare industry. If our operations are found to be in violation of any of these or any other healthcare and privacy-related regulatory laws that may apply to us, our ability to operate our business and our results of operations could be adversely affected by:

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the imposition of significant civil, criminal and administrative penalties, damages, monetary fines, disgorgement and imprisonment;
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possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs or comparable foreign programs;
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reputational harm;
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diminished profits and future earnings;
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additional reporting requirements and oversight if we become subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these laws; and
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curtailment of our operations.

Defending against any such actions can be costly, time-consuming and may require significant financial and personnel resources. Therefore, even if we are successful in defending against any such actions that may be brought against us, our business may be impaired.

The adoption of health policy changes and healthcare reform both in the U.S. and outside the U.S. may adversely affect our business and financial results.

In the U.S. and some jurisdictions outside the U.S., there have been a number of legislative and regulatory changes and proposed changes regarding the healthcare system that could impact our business. Generally, there has been increasing legislative and enforcement interest in the U.S. with respect to drug pricing, including specialty drug

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pricing practices, in light of the rising cost of prescription drugs and biologics. Specifically, there have been U.S. Congressional inquiries and federal and state legislative activity designed to, among other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, reduce the price of drugs under Medicare, and reform government program reimbursement methodologies for drugs and biologics. For details regarding these legislative and regulatory changes and proposed changes regarding the healthcare system that may affect our ability to operate, see Item 1 “Business - Healthcare Reform” in this Report.

If future legislation were to impose direct governmental price controls and access restrictions, it could have a significant adverse impact on our business and financial results. Managed care organizations, as well as Medicaid and other government authorities, continue to seek price discounts. At the state level, legislatures have increasingly passed legislation and implemented regulations designed to control pharmaceutical and biologic product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, to encourage importation from other countries and bulk purchasing. Due to the volatility in the current economic and market dynamics, we are unable to predict the impact of any unforeseen or unknown legislative, regulatory, payor or policy actions, which may include cost containment and healthcare reform measures. Such policy actions could have a material adverse impact on future sales of RYTELO in the U.S., and outside the U.S. if approved in other jurisdictions.

RISKS RELATED TO THE FURTHER DEVELOPMENT OF RYTELO (IMETELSTAT)

We cannot be certain that we will be able to continue to develop RYTELO or advance it in clinical trials, or that we will be able to receive regulatory approval for RYTELO in any other indications in the U.S., the EU or any other region, on a timely basis or at all.

We are wholly dependent on the success of RYTELO (imetelstat), which is our only approved product, and our ability to generate revenue from product sales and achieve profitability is wholly dependent on our ability to successfully commercialize RYTELO for lower-risk MDS or to expand its indications of use. In this regard, in addition to lower-risk MDS, which is the only indication for which RYTELO has received marketing approval in the U.S., we are developing imetelstat for the treatment of several myeloid hematologic malignancies. Our ability to further develop imetelstat and to expand its indications of use to other myeloid hematologic malignancies is subject to significant risks and uncertainties, including, among other things, our ability to:

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receive regulatory approval to commercialize RYTELO in lower-risk MDS from the EC without the requirement for the conduct and completion of additional pre-approval clinical trials or further analyses, testing or development commitments, if at all, any of which could result in increased costs to us, and delay, limit or preclude our ability to generate revenue in the EU;
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generate sufficient safety and efficacy data from the IMpactMF clinical trial to support any application for regulatory approval in relapsed/refractory MF, without clinically meaningful safety issues, side effects or dose-limiting toxicities related to imetelstat that may negatively impact its benefit-risk profile;
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ascertain that the use of imetelstat does not result in significant systemic or organ toxicities, including hepatotoxicity, or other safety issues resulting in an unacceptable benefit-risk profile;
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obtain additional capital if and when needed in order to enable us to further advance imetelstat clinical trials in other myeloid hematologic malignancies;
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obtain and maintain required regulatory clearances and approvals to enable continued clinical development of imetelstat;
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enter into and maintain commercially reasonable arrangements with third parties to provide services needed to further research, develop and commercialize RYTELO, including maintaining the agreements with our contract research organizations, or CROs, and third-party manufacturers;
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recruit and retain sufficient qualified and experienced personnel to support the development and commercialization of RYTELO in potential other approved indications and jurisdictions outside the U.S.;
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enter into and maintain arrangements with third parties to provide services needed to support the commercialization of RYTELO for territories outside of the U.S. in compliance with applicable laws;

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•
achieve acceptance of RYTELO treatment by patients and the relevant medical communities;
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compete effectively with other approved treatments in lower-risk MDS, and relapsed/refractory MF if imetelstat is approved in relapsed/refractory MF, and potentially other myeloid hematologic malignancies;
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obtain appropriate coverage and reimbursement levels for the cost of RYTELO from governmental authorities, private health insurers and other third-party payors; and
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obtain, maintain and enforce adequate intellectual property and regulatory exclusivity for RYTELO in the U.S. and globally.

If we are not able to successfully achieve these goals and overcome other challenges that we may encounter in the research, development, manufacturing and commercialization of RYTELO in indications other than lower-risk MDS, we may be forced to abandon our development and/or commercialization of RYTELO in indications other than lower-risk MDS, which could severely harm our business and business prospects.

Our clinical trials of imetelstat could be interrupted, delayed, terminated or abandoned for a variety of reasons which could severely and adversely affect our financial results, business and business prospects.

The conduct and completion of our clinical trials could be interrupted, delayed or abandoned for a variety of reasons, including as a result of clinical trial failures, suspensions, terminations or delays related to:

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patient recruitment, enrollment and retention challenges and operational delays, including in connection with opening new clinical trial sites, while also competing with clinical trials for other investigational drugs in the same patient population;
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use of trial endpoints such as overall survival, that inherently require prolonged periods of clinical observation or analysis of the resulting data to determine trial outcomes, including the need for a certain number of events, or deaths, to occur in IMpactMF prior to the interim or final analysis in that trial of overall survival;
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obtaining and/or maintaining regulatory clearances in the U.S. or other jurisdictions to commence, conduct or modify current or potential future clinical trials of imetelstat, in a timely manner, or at all;
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investigational new drug applications, or INDs, and equivalent submissions in other countries for imetelstat being placed on full or partial clinical hold, suspended or subject to other requirements by the FDA or other similar international regulatory authorities;
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contracting with a sufficient number of clinical trial sites to conduct current and potential future clinical trials, and ensuring that such contracts contain all necessary terms and conditions required by applicable laws, including providing for valid mechanisms to engage in cross-border data transfers, as well as identifying, recruiting and training suitable clinical investigators;
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obtaining or accessing necessary clinical data in accordance with appropriate clinical or quality practices and regulatory requirements, in a timely and accurate manner to ensure complete data sets;
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responding to safety findings, recommendations or conclusions by the data safety review committees, independent data monitoring committees and/or expert committees of current and potential future clinical trials of imetelstat based on emerging data occurring during such clinical trials;
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manufacturing sufficient quantities that meet our specifications, cost and quality requirements, and timelines for imetelstat, or for other clinical trial materials, in a manner that meets the quality standards of the FDA and other similar international regulatory authorities, and responding to any disruptions to drug supply, clinical trial materials or quality issues that may arise;
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the effects of macroeconomic or other global conditions, such as inflation, rising interest rates, prospects of a recession, government shutdowns, changes in tariffs or other trade restrictions, bank failures and other disruptions to financial systems, civil or political unrest, military conflicts, pandemics or other health crises and supply chain and resource issues;

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•
complying with current and future regulatory requirements, policies or guidelines, including domestic and international laws and regulations pertaining to fraud and abuse, transparency, and the privacy and security of health information;
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reaching agreement on acceptable terms and on a timely basis, if at all, with collaborators, physician investigators, vendors and other third parties located in the U.S. or other countries, including our CROs, laboratory service providers and clinical trial sites, on all aspects of clinical development and collaborating with them successfully; and
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third-party clinical contractors, including investigators or our CROs not performing our clinical trials according to our anticipated schedule or consistent with the clinical trial protocol, good clinical practices, or GCP, or other regulatory requirements, or not performing data collection or analyses in a timely or accurate manner.

Failures or delays with respect to any of these events could adversely affect our ability to conduct or complete the clinical trials being conducted by us or our investigators, or to commence, conduct and complete potential future clinical trials of imetelstat, which could increase development costs, or interrupt, further delay or halt our development, of imetelstat, any of which could severely and adversely affect our financial results, business and business prospects.

RYTELO may cause, or have attributed to it, undesirable or unintended side effects or other adverse events that could halt or limit its further commercialization, delay or prevent its regulatory approval in any other jurisdiction or indication, or cause us to delay or terminate our clinical trials.

RYTELO (imetelstat) has been administered only to a limited number of patients in clinical trials. While the FDA granted approval of RYTELO based on the data included in our NDA, including data from the Phase 3 IMerge trial, we do not know whether the results when a larger number of patients receive RYTELO from commercial use, including results related to safety, will be consistent with the results from earlier clinical trials that served as the basis for its approval.

In addition, because remaining patients in ongoing clinical trials continue to receive imetelstat, additional or more severe toxicities or safety issues may be observed, and the benefit-risk profile of imetelstat will continue to be assessed, including the risk of hepatotoxicity, severe cytopenias, fatal bleeding with or without any associated thrombocytopenia, patient injury or death. New data relating to imetelstat, including from adverse event reports and our post-marketing requirements in the United States, and from ongoing clinical trials of imetelstat, may result in changes to the product label and may adversely affect sales, or result in withdrawal of imetelstat from the market. The FDA and regulatory authorities in other jurisdictions may also consider the new data in reviewing our marketing applications for additional indications and/or in other jurisdictions, or impose post-approval requirements. If any of these actions were to occur, it could result in significant expense and delay or limit our ability to generate sales revenues.

Further, as a result of commercialization of RYTELO, or in current or potential future clinical trials, RYTELO may cause, or have attributed to it, undesirable or unintended side effects or other adverse events affecting its safety or efficacy that could interrupt, further delay or halt its commercialization or current or potential future clinical trials. In this regard, adverse events and dose-limiting toxicities observed in previous and ongoing clinical trials include:

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hematologic toxicities, such as profound and/or prolonged thrombocytopenia or neutropenia;
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bleeding events, with or without thrombocytopenia, including Grade 3/4 bleeding events;
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febrile neutropenia;
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hepatotoxicity and liver function test abnormalities, as well as hepatic failure;
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gastrointestinal events;
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infection events, with or without neutropenia, including Grade 3/4 infection events;
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muscular and joint pain;
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fatigue;
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headache; and

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•
infusion-related reactions.

If patients who receive RYTELO as a result of commercialization or in any clinical trials experience similar or more severe adverse events, or new or unusual adverse events, or if the FDA or other similar international regulatory authorities determine that efficacy and safety data from our commercialization efforts or in clinical trials do not support an adequate benefit-risk profile to justify continued treatment of patients, then the FDA or other similar international regulatory authorities may halt or restrict the commercialization of RYTELO or place one or more of our INDs on clinical hold, as occurred in March 2014. If this were to occur, there could be a significant delay in, or possible termination of, one or more of our clinical trials, and our commercialization efforts could be halted, which might cause us to cease operations. If such toxicities or other safety issues identified as a result of our commercialization of RYTELO or in any clinical trial are determined by us, the FDA or similar international regulatory authorities to result in an unacceptable benefit-risk profile, then:

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the FDA could withdraw or restrict regulatory approval for RYTELO in the U.S. for lower-risk MDS;
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additional information supporting the benefit-risk profile of RYTELO may be requested by the FDA or similar international regulatory authorities and if any such information is not available or, if available, not deemed acceptable, regulatory approval could be withdrawn by the FDA in the U.S., and/or current clinical trials could be suspended, terminated, or placed on clinical hold by the FDA or similar international regulatory authorities;
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the ability to retain enrolled patients in our current clinical trials may be negatively affected, resulting in incomplete data sets and the inability to adequately assess the benefit-risk profile of RYTELO in a specific patient population;
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additional, unexpected clinical trials or non-clinical studies may be required to be conducted; or
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RYTELO may not receive or maintain regulatory clearances and approvals required to enable its continued development.

The occurrence of any of these events could interrupt, further delay, or halt, our commercialization or RYTELO or its further development, and as a result, could preclude the commercialization of RYTELO in any additional indications, as well as increase costs for continued development in additional indications, which would have a severe adverse effect on our results of operations, financial condition and ability to raise additional capital, business and business prospects, any of which might cause us to cease operations.

Results and data we disclosed from prior non-clinical studies and clinical trials may not predict success in later clinical trials, and we cannot assure you that any ongoing or future clinical trials of imetelstat, including IMpactMF, will lead to similar results and data that could potentially enable us to obtain any further regulatory approvals.

The design of a clinical trial can determine whether its results will support regulatory approval of a product, and flaws in the trial design may not become apparent until the clinical trial is well advanced or during the approval process after the trial is completed. A clinical trial design that is considered appropriate for regulatory approval includes a sufficiently large sample size with appropriate statistical power, as well as proper control of bias, to allow a meaningful interpretation of the results. The preliminary results of imetelstat clinical trials with smaller sample sizes can be disproportionately influenced by the impact the treatment had on a few individuals, which limits the ability to generalize the results across a broader community, making the trial results of clinical trials with smaller sample sizes less reliable than trials with a larger number of patients. As a result, there may be less certainty that imetelstat will achieve a statistically significant effect in any future clinical trials.

Further, success in non-clinical testing and early clinical trials, including Phase 2 clinical trials, such as IMbark, does not ensure that later clinical trials will be successful, nor does it predict final clinical trial results. In addition, even though we reported positive top-line results from IMerge Phase 3 in January 2023, this does not ensure that any other clinical trials of imetelstat will be successful. Later stage clinical trials of imetelstat may fail to show an acceptable benefit-risk profile despite having progressed through non-clinical studies and initial clinical trials. Many companies in the biopharmaceutical industry have frequently suffered significant setbacks in later clinical trials, even after achieving promising results in earlier non-clinical studies or clinical trials.

In general, Phase 3 clinical trials with larger numbers of patients or longer durations of therapy may fail to replicate efficacy and safety results observed in earlier clinical trials, such as IMbark, and if this were to occur with

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IMpactMF, this would adversely affect future development prospects of imetelstat, and as a result, impact the potential commercialization of imetelstat in relapsed/refractory MF, which would have a severe adverse effect on our results of operations, financial condition and ability to raise additional capital, if needed, business and business prospects, any of which might cause us to cease operations.

Furthermore, non-clinical and clinical data are often susceptible to varying interpretations and analyses. In some instances, there can be significant variability between different clinical trials of imetelstat due to numerous factors, including changes in trial procedures set forth in trial protocols, differences in the size and type of patient populations, and changes in and adherence to the dosing regimens. For example, although the statistical analyses comparing IMbark data to closely matched real world data, or RWD, published in the September 2021 issue of the Annals of Hematology, suggest potentially favorable overall survival in relapsed/refractory MF patients treated with imetelstat, compared to BAT using closely matched patients’ RWD, such comparative analyses between RWD and our clinical trial data have several limitations. For instance, the analyses create a balance between treatment groups with respect to commonly available covariates, but do not take into account the unmeasured and unknown covariates that may affect the outcomes of the analyses. Potential biases are introduced by factors which include, for example, the selection of the patients included in the analyses, misclassification in the matching process, the small sample size, and estimates that may not represent the outcomes for the true treated patient population. Failure to achieve results supporting a positive benefit-risk profile in current or potential future imetelstat clinical trials would interrupt, further delay, or halt, any development of imetelstat, which would have a severe adverse effect on our results of operations, financial condition and ability to raise additional capital, if needed, business and business prospects.

Further, preliminary data are based on a preliminary analysis of then-available data, and the results and related findings and conclusions are subject to change following a more comprehensive review of the data related to the particular study or trial. We also make assumptions, estimations, calculations and conclusions as part of our analyses of data, and we may not have received or had the opportunity to fully and carefully evaluate all data. Additional or updated safety and efficacy data from current or potential future clinical trials of imetelstat may result in a benefit-risk profile that does not justify the continued development and/or potential regulatory approval of imetelstat in a particular patient population, or at all. Any data reported from IMpactMF may materially differ from and be less positive than data previously reported from IMbark. Thus, reported data should be considered carefully and with caution, and not relied upon as indicative of future clinical results. Such additional data could result in a lower benefit-risk profile than initially expected, which could halt the commercialization of RYTELO, hinder the potential success of IMpactMF, IMproveMF or IMpress, or cause us to abandon further development of imetelstat entirely.

Top-line results and data may differ from future results of the same study, or different conclusions or considerations may qualify such results, once additional data have been received and fully evaluated. Moreover, as remaining patients in IMerge Phase 3 continue to be treated and followed under the extension phase of the trial and longer-term outcomes are assessed, these additional and more mature data may alter the benefit-risk profile of imetelstat in an adverse manner, including with respect to overall survival. Material adverse differences in future results, compared to preliminary, interim or top-line data, could severely and adversely affect our financial results, business and business prospects, including the commercialization of RYTELO, and might cause us to cease operations.

We rely on third parties to conduct our current and potential future clinical trials of imetelstat. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, we may be unable to continue the development of imetelstat.

We do not have the ability to independently conduct clinical trials. Therefore, we rely on medical institutions, clinical investigators, contract laboratories and other third parties, such as CROs, service providers, vendors, suppliers and consultants, to conduct clinical trials of imetelstat. The third parties we contract with for execution of our current and potential future clinical or investigator-sponsored trials of imetelstat play a critical role in the conduct of these trials and the subsequent collection and analysis of data. However, these third parties are not our employees, and except for contractual duties and obligations, we have limited ability to control their performance, or the amount or timing of resources that they devote to imetelstat. For example, we have retained CROs to support our clinical development activities, and any failure by our CROs to perform their contractual obligations, or disputes with our CROs about the quality of their performance or other matters, could further delay or halt our clinical development activities. These third parties may also have relationships with other commercial entities, some of which may compete with us. Under certain circumstances, these third parties may terminate their agreements with us without cause and upon immediate written notice.

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Although we rely on third parties to conduct our clinical trials, we remain responsible for ensuring that each clinical trial is conducted in accordance with its investigational plan and protocol, and applicable laws. Moreover, the FDA and similar international regulatory authorities require us to comply with GCP regulations and standards for conducting, monitoring, recording and reporting the results of clinical trials to ensure that the data and results are scientifically credible and accurate, and that the rights, integrity and confidentiality of patients participating in clinical trials are protected, including being adequately informed of the potential risks. Regulatory authorities enforce these GCP requirements through periodic inspections of trial sponsors, principal investigators and trial sites. If we or any of our CROs fail to comply with applicable GCP requirements, the clinical data generated in our clinical trials may be deemed unreliable and the FDA, or similar international regulatory authorities, may require us to perform additional clinical trials. We cannot assure you that upon inspection by a given regulatory authority, such regulatory authority will determine that any of our clinical trials comply with GCP or other applicable regulations. In addition, our clinical trials must be conducted with imetelstat produced under applicable GMP regulations. Our failure to comply with these regulations may require us to repeat clinical trials. Our ability to comply with these regulations and standards may be contingent upon activities conducted by third parties, and if they fail to perform in accordance with contractual obligations and legal requirements, our development of imetelstat may be interrupted, further delayed or halted. Any failures by us or third parties noted above would have a severe adverse effect on our results of operations, financial condition and ability to raise additional capital, if needed, business and business prospects, including the commercialization of RYTELO, any of which might cause us to cease operations.

Furthermore, the execution of clinical trials and the subsequent compilation and analysis of the data produced, including the interim and final analyses for IMpactMF, requires coordination among various parties. In order for these functions to be carried out effectively and efficiently, it is imperative that these parties communicate and coordinate with one another. If the quality or accuracy of the clinical data obtained, compiled or analyzed by third parties is compromised due to their failure to adhere to our clinical trial protocols, GCP or GMP requirements, or for any other reason, we may need to enter into new arrangements with alternative third parties, which would cause delay, and could be difficult, costly or impossible.

Switching or adding clinical research organizations, or CROs, investigators, vendors and other third parties involves additional costs and delays because of the time it takes to finalize a contract with a new CRO and for their commencement of work. Although we carefully manage our relationships with our CROs, investigators, vendors and other third parties, we and any of these third parties may nonetheless encounter challenges or delays in the future, which could have a material and adverse impact on our business and business prospects.

In addition, certain principal investigators for our clinical trials serve as scientific advisors or consultants to us from time to time and receive compensation in connection with such services. Under certain circumstances, we may be required to report some of these relationships to the FDA or comparable foreign regulatory authorities. The FDA or comparable foreign regulatory authorities may conclude that a financial relationship between us and a principal investigator has created a conflict of interest or otherwise affected conduct of the trial. The FDA or comparable foreign regulatory authorities may therefore question the integrity of the data generated at the applicable clinical trial site and the utility of the clinical trial itself may be jeopardized. This could result in a delay in approval, or rejection, of any future applications for regulatory approval of imetelstat, including in any additional indications by the FDA.

We do not control the conduct of current or any potential future investigator-led clinical trials, and data from such trials could show marginal efficacy and/or clinically relevant safety concerns related to imetelstat resulting in an unfavorable benefit-risk assessment that could materially and adversely impact our ongoing clinical trials, or our development program as a whole.

We do not control the design or administration of investigator-led clinical trials, nor the submission, approval or maintenance of any IND or international equivalent filings required to conduct these clinical trials. In addition, we do not have control over the timing and reporting of the data from any such investigator-led clinical trials. A delay in the timely completion of or reporting of data from any current or potential future investigator-led clinical trial could have a material adverse effect on our ability to maintain regulatory approval for RYTELO in lower-risk MDS, or to further develop or advance it in clinical trials.

Investigator-led clinical trials may be conducted under less rigorous clinical standards than those used in company-sponsored clinical trials. Accordingly, regulatory authorities may closely scrutinize the data collected from these investigator-led clinical trials. In addition, any investigator-led clinical trials could show marginal efficacy and/or clinically relevant safety concerns that could delay, limit or preclude the further clinical development or marketing approval of RYTELO in any indication. To the extent that the results of any investigator-led clinical trials raise safety or other concerns, regulatory authorities may withdraw or restrict approval for RYTELO, question the results of such investigator-led clinical trials, or question the results of any of our clinical trials. Safety concerns

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arising from future investigator-led clinical trials could result in withdrawal of approval of RYTELO, partial or full clinical holds being placed on our INDs by the FDA or other similar international regulatory authorities, as occurred in March 2014, which would further delay or prevent us from commercializing RYTELO or advancing it into further clinical development. Any of the foregoing would delay or preclude any future marketing approvals for RYTELO and could cause us to discontinue our development of it, which would severely harm our business and prospects and could potentially cause us to cease operations.

Risks Related to Manufacturing RYTELO (IMETELSTAT)

Failure by us to maintain a manufacturing supply chain to appropriately and adequately supply RYTELO for commercial and future clinical uses would adversely affect our ability to commercialize RYTELO and result in a further delay in or cessation of clinical trials, and our business and business prospects could be severely harmed, and we could cease operations.

The manufacture of RYTELO (imetelstat) must comply with applicable regulatory standards for commercial uses and current and potential future clinical trials. The process of manufacturing RYTELO is complex and subject to several risks, including:

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the ability to consistently manufacture and attain sufficient production yields with acceptable quality control and quality assurance to meet market demand for our commercialization of RYTELO, as well as the needs for continuing clinical trials;
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our ability to maintain existing commercial supply agreements and to establish additional or alternative supply agreements if necessary, including our ability to successfully transfer manufacturing technology and attain regulatory approval at any such additional or alternative suppliers;
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reliance on third-party manufacturers and suppliers, whose efforts we do not control;
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supply chain issues, including the timely availability of product and management of shelf-life, including raw materials, drug substance, and drug product and other supplies, any of which may be impacted by a number of factors, including the effects of macroeconomic or other global conditions;
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shortage of qualified personnel at any of our third party suppliers; and
•
regulatory acceptance and compliance with regulatory requirements, which are less well-defined for oligonucleotide products than for small molecule drugs and vary in each country.

As a result of these and other risks, we may be unable to maintain a manufacturing infrastructure and supply chain capable of providing RYTELO for clinical and commercial use, which would delay or adversely affect our RYTELO commercialization efforts; result in lost sales; delay or result in a cessation of our current or potential future clinical trials; delay or preclude potential future regulatory approvals of RYTELO in other jurisdictions or indications; and could cause financial and reputational harm.

If third parties that manufacture RYTELO fail to perform as needed, the commercial and clinical supply of RYTELO could be interrupted or limited, and we may be unable to successfully commercialize RYTELO or conduct or complete current or potential future clinical trials.

Our RYTELO manufacturing supply chain relies, and will continue to rely, solely upon third-party manufacturers to perform certain manufacturing, quality control, and other technical and scientific work with respect to RYTELO, as well as to supply starting materials and manufacture drug substance and drug product for our commercialization of RYTELO, as well as current and potential future clinical trials. While we have established arrangements with third parties for the manufacture of RYTELO, our manufacturing supply chain is highly specialized, and as such we are reliant upon a small group of third-party manufacturers to supply starting materials, drug substance and drug product. Failure by such third-party manufacturers to perform in a timely manner and in compliance with all regulatory requirements, or at all, could further delay, perhaps substantially, or preclude our ability to commercialize RYTELO and/or pursue further development of RYTELO on our own, increase our costs, result in lost sales, and otherwise negatively affect our financial results, business and business prospects. In this regard, recent FDA inspections of one of our third-party drug product manufacturers identified certain deficiencies in the manufacturer’s processes and facilities which, while not directly related to the FDA approval or ongoing production of RYTELO, could impact the manufacturer’s ability to produce and deliver products, including RYTELO, if not remediated by the manufacturer, and could lead to delays or shortages in drug supply, or the inability to manufacture or ship drug supply necessary for non-clinical and clinical activities and commercialization. We expect to rely on third-party manufacturers to produce and deliver sufficient quantities of RYTELO and other materials to support commercialization and clinical trials on a timely basis and to comply with applicable regulatory

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requirements. We do not have direct control over these third-party personnel or operations. Reliance on these third-party manufacturers is subject to numerous risks, including:

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the inability to execute timely contracts or production orders with any additional third-party manufacturers and suppliers that we may identify on acceptable terms, or at all;
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delays and disruptions experienced by third-party manufacturers that adversely impact the ability of such parties to fulfill their contractual obligations to us, including to provide the quantities of RYTELO required to meet commercial and clinical needs;
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capacity limitations and scheduling constraints experienced by third-party manufacturers due to scheduling, maintenance and other commitments, and queued manufacturing activities in contracted facilities;
•
requirements by regulatory authorities to validate and qualify significant activities for any current or additional manufacturer, which could involve technology transfer, new testing, compliance inspections, and would likely require FDA or comparable foreign regulatory authority approval;
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the inability of third-party manufacturers to timely formulate and manufacture RYTELO or to produce or ship RYTELO in the quantities or of the quality required to meet commercial and clinical needs;
•
the possible mislabeling by third-party manufacturers of finished drug product for both commercial and clinical use, potentially resulting in product recall and harm to our business;
•
decisions by third-party manufacturers to exit the contract manufacturing business during the time required to supply clinical trials or to successfully produce, store and distribute RYTELO to meet commercial needs;
•
compliance by third-party manufacturers with GMP standards mandated by the FDA and state agencies and other government regulations, including foreign governing regulations, corresponding to similar international regulatory authorities, including any deficiencies identified during regulatory inspections, such as those identified in a recent FDA inspection of one of our third-party manufacturers;
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breach or termination of manufacturing or supply contracts;
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inadequate storage or maintenance at contracted facilities resulting in theft or spoilage; and
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natural disasters that affect contracted facilities, including manufacturing, warehousing, and distribution facilities.

Each of these risks could lead to delays or shortages in drug supply, or the inability to manufacture or ship drug supply necessary for commercialization, and non-clinical and clinical activities, which could severely and adversely affect our financial results, business and business prospects.

In addition, third-party manufacturers and/or any other manufacturers may need to make substantial investments to enable sufficient capacity increases and cost reductions, and to implement those regulatory and compliance standards necessary for successful commercialization of RYTELO. These third-party manufacturers may not be willing or able to achieve such capacity increases, cost reductions, or regulatory and compliance standards, and even if they do, such achievements may not be at commercially reasonable costs. Changing manufacturers may be prolonged and difficult due to inherent technical complexities, regulatory risks, and because the number of potential manufacturers for oligonucleotide products is limited. It may be difficult or impossible for us to find a replacement manufacturer on acceptable terms, or at all.

Risks Related to Our OPERATING RESULTS AND Financial Position

We have a history of net losses and may not achieve consistent future profitability for some time, if ever.

We are incurring and have incurred net losses every year since our operations began in 1990, except for one. As of December 31, 2024, our accumulated deficit was approximately $1.8 billion. Losses have resulted principally from costs incurred in connection with our research and development activities and from general and administrative

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costs associated with our operations. Although we have recently begun to commercialize RYTELO, our revenue and profit potential is unproven and our very limited operating history as a commercial company makes our future operating results difficult to predict. If we do not generate sufficient revenue from commercial sales of RYTELO, or if we experience unforeseen events or choose to make other investments in our business, we may continue to experience negative cash flow as we fund our operations and imetelstat clinical development activities and research programs, and continue with the commercialization of RYTELO, including as a result of our obligation to pay royalty payments under the Royalty Pharma Agreement and service our debt obligations. We will need to generate significant revenues to achieve consistent future profitability, and we may never achieve consistent future profitability. Even if we do become profitable in the future, we may not be able to sustain or increase profitability on a quarterly or annual basis. Our failure to achieve consistent future profitability could negatively impact the market price of our common stock and our ability to sustain operations.

Our operating results are unpredictable and may fluctuate. If our operating results are below the expectations of securities analysts or investors, the trading price of our common stock could decline.

Our operating results are difficult to predict and will likely fluctuate from quarter to quarter and year to year. Due to the limited historical sales data of RYTELO in lower-risk MDS since its approval by the FDA in June 2024, RYTELO sales will be difficult to predict from period to period and as a result, you should not rely on RYTELO sales results in any period as being indicative of future performance. Sales of RYTELO may be below our own guidance or the expectations of securities analysts or investors in the future. To the extent that we do not meet our guidance, our financial projections or estimates, or the expectations of analysts or investors, our stock price may be adversely impacted, perhaps significantly. We believe that our quarterly and annual results of operations may be affected by a variety of factors, including:

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the level of demand for RYTELO;
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the extent to which coverage and reimbursement for RYTELO is available from government and health administration authorities, private health insurers, managed care programs and other third-party payors;
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changes in the amount of deductions from gross sales, including government-mandated rebates, chargebacks and discounts that can vary because of changes to the government discount percentage, including increases in the government discount percentage resulting from price increases we may take in the future, or due to different levels of utilization by entities entitled to government rebates and discounts and changes in patient demographics;
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increases in the scope of eligibility for customers to purchase RYTELO at the discounted government price or to obtain government-mandated rebates on purchases of RYTELO;
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changes in our cost of sales;
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the timing and level of royalty payments under the Royalty Pharma Agreement;
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the timing, cost and level of investment in our sales and marketing efforts to support RYTELO sales;
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the timing, cost and level of investment in our research and development activities involving imetelstat and potential future product candidates; and
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expenditures we may incur to develop and/or commercialize any additional products, product candidates, or technologies that we may develop, in-license, or acquire.

Further, changes in our operations, such as increased development, manufacturing and clinical trial expenses, or our undertaking of additional programs, business activities, or entry into strategic transactions, including potential future acquisitions of products, technologies or businesses may also cause significant fluctuations in our expenses. In addition, we measure compensation cost for stock-based awards made to employees at the grant date of the award, based on the fair value of the award, and recognize the cost as an expense over the employee’s requisite service period. As the variables that we use as a basis for valuing these awards change over time, including our underlying stock price, the magnitude of the expense that we must recognize may vary significantly.

For these and other reasons, it is difficult for us to accurately forecast future sales of RYTELO, operating expenses or future profits or losses. As a result, our operating results in future periods could be below our guidance or the expectations of securities analysts or investors, which could cause the trading price of our common stock to decline, perhaps significantly.

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Our financial projections and estimates are subject to significant risks, assumptions, and uncertainties, and our actual results may differ materially.

Our financial projections and estimates are subject to significant risks, assumptions, and uncertainties, and our actual results may differ materially. These projections and estimates include estimates of the total addressable market for RYTELO, assumptions regarding patient market share and duration of therapy, as well as assumptions regarding our ability to meet demand. These projections and estimates are subject to various factors beyond our control, including, for example, the level of demand for RYTELO, the extent to which coverage and reimbursement for RYTELO is available from government and health administration authorities, private health insurers, managed care programs and other third-party payors, increased costs in the supply chain, increased labor costs, changes in the regulatory environment, the impact of global health crises and changes in our senior management team. Our financial projections and estimates constitute forward-looking statements, are for illustrative purposes only and should not be relied upon as necessarily being indicative of future results. The assumptions and estimates underlying such financial projections and estimates are inherently uncertain and are subject to a wide variety of significant business, economic, competitive and other risks and uncertainties. Actual results may differ materially from the results contemplated by the financial projections. Our independent auditors have not studied, reviewed, compiled or performed any procedures with respect to the projections, and accordingly, they did not express an opinion or provide any other form of assurance with respect thereto. While all financial projections, estimates and targets are necessarily speculative, we believe that the preparation of financial projections involves increasingly higher levels of uncertainty the further out the projection, estimate or target extends from the date of preparation. Accordingly, there can be no assurance that the prospective results are indicative of our future performance or that actual results will not differ materially from those presented in the financial projections or estimates.

Our failure to obtain additional capital, if and when needed, would force us to further delay, reduce or eliminate the further development of RYTELO, or to halt the commercialization of RYTELO, any of which would severely and adversely affect our financial results, business and business prospects, and might cause us to cease operations.

Successful drug development and commercialization requires significant amounts of capital. As of December 31, 2024, we had approximately $502.9 million in cash, cash equivalents, restricted cash and marketable securities. While we believe that, based on our current operating plans and assumptions, our existing cash, cash equivalents, and marketable securities, together with anticipated net revenues from sales of RYTELO, will be sufficient to fund our projected operating requirements for the foreseeable future, if we do not generate net revenues from commercial sales of RYTELO at the levels we anticipate, if we experience unforeseen events or choose to make other investments in our business, or our assumptions regarding our projected operating expenses are otherwise incorrect, we may require additional funding, which could include a combination of public or private equity offerings, debt financings (including additional tranches under the Pharmakon Loan Agreement, if available), collaborations, strategic alliances, licensing arrangements or marketing and distribution arrangements, which may not be possible. For example, changes in our operations, such as increased development, manufacturing and clinical trial expenses, or our undertaking of additional programs, business activities, or entry into strategic transactions, including potential future acquisitions of products, technologies or businesses, may cause our operating expenses to increase, perhaps significantly, which could require us to raise additional funding. If adequate funds are not available to us when we need them, our RYTELO commercialization efforts may be adversely affected and we may be unable to pursue further development of imetelstat, which would severely harm our business and we might cease operations.

Despite FDA approval of RYTELO in June 2024, the outcome of any clinical activities and/or regulatory approval process is highly uncertain, and we cannot reasonably estimate whether our future development activities may succeed, whether we will obtain regulatory approval for RYTELO in the EU in lower-risk MDS, or in any other jurisdictions or indications we are pursuing or may in the future pursue, or whether we will be able to effectively commercialize RYTELO in the U.S. for lower-risk MDS or other potential jurisdictions or indications, if at all. We may never recoup our investment in any RYTELO development which would adversely affect our financial condition and our business and business prospects, and might cause us to cease operations. In addition, our plans and timing expectations could be further delayed or interrupted by the effects of macroeconomic or other global conditions, including those resulting from inflation, rising interest rates, prospects of a recession, government shutdowns, further changes in tariffs and other trade restrictions, bank failures and other disruptions to financial systems, civil or political unrest, military conflicts, pandemics or other health crises and supply chain and resource issues. Further, our future capital requirements are difficult to forecast and will depend on many factors, including:

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the accuracy of the assumptions underlying our estimates for our capital needs;
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the level of sales and market acceptance of RYTELO;

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•
the scope, progress, timing, magnitude and costs of non-clinical and clinical development, manufacturing and commercialization of RYTELO, including potential commercialization in the EU for lower-risk MDS, if approved, or in any other jurisdictions or other indication we may pursue, subject to clearances and approvals by the FDA and similar international regulatory authorities;
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delays or disruptions in opening sites, screening and enrolling patients or treating and following patients, in our current or any potential future clinical trials of RYTELO;
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the costs, timing and outcomes of regulatory reviews or other regulatory actions related to RYTELO, including with respect to our MAA submission for RYTELO in the EU for lower-risk MDS;
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the costs of preparing, filing and prosecuting patent applications and maintaining, enforcing and defending intellectual property-related claims;
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the costs of manufacturing, developing, commercializing and marketing RYTELO, including with respect to third-party vendors and service providers and our ability to achieve any meaningful reduction in manufacturing costs;
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the sales price for RYTELO;
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the availability of coverage and adequate third-party reimbursement for RYTELO;
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the extent to which we acquire or in-license other drugs and technologies, or invest in businesses, products or technologies, although we currently have no commitments or agreements relating to any of these types of transactions, or to which we out-license RYTELO;
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the extent to which we are able to enter into and conduct successful arrangements with third parties, including for the commercialization and marketing of RYTELO in any regions outside of the U.S.;
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the extent and scope of our selling, general and administrative expenses, including expenses associated with potential future litigation;
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our level of indebtedness and associated debt service obligations;
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the costs of maintaining and operating facilities in California and New Jersey, as well as higher expenses for travel;
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macroeconomic or other global conditions that may reduce our ability to access equity or debt capital or other financing on preferable terms, which may adversely affect future capital requirements and forecasts; and
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the costs of enabling our personnel to work remotely, including providing supplies, equipment and technology necessary for them to perform their responsibilities.

In the event we need to raise additional capital to fund our business, including pursuant to the 2023 Sales Agreement with B. Riley Securities, Inc., the Tranche B Loan and the Tranche C Loan under the Pharmakon Loan Agreement, which are subject to certain funding conditions; capital lease transactions or other financing sources, such additional capital may not be available on acceptable terms, or at all. We may be unable to raise equity capital, or may be forced to do so at a stock price or on other terms that could result in substantial dilution of ownership for our stockholders. The receptivity of the public and private debt and equity markets to proposed financings has been substantially affected by uncertainty in the general economic, market and political climate due to the effects of macroeconomic or other global conditions, such as inflation, rising interest rates, prospects of a recession, government shutdowns, further changes in tariffs and other trade restrictions, bank failures and other disruptions to financial systems, civil or political unrest, military conflicts, pandemics or other health crises and supply chain and resource issues, and may in the future be affected by other factors which are unpredictable and over which we have no control. These effects have increased market volatility and could result in a significant long-term disruption of global financial markets, which could reduce or eliminate our ability to raise additional funds through financings, and could negatively impact the terms upon which we may raise those funds. Similarly, these macroeconomic conditions have created extreme volatility and disruption in the capital markets and is expected to have further global economic consequences. If the equity and credit markets deteriorate, including as a result of macroeconomic or other global conditions, such as inflation, rising interest rates, prospects of a recession, government shutdowns, further changes in tariffs and other trade restrictions, bank failures and other disruptions to financial systems, civil or political unrest, military conflicts, pandemics or other health crises and supply chain and resource issues, it may

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make any necessary debt or equity financing more difficult to obtain in a timely manner or on favorable terms, more costly or more dilutive. If we are unable to effectively commercialize RYTELO, or raise additional capital, if needed, or establish alternative collaborative arrangements with third-party collaborative partners for RYTELO when needed, the development and commercialization of RYTELO may be further delayed, altered or abandoned, which might cause us to cease operations.

In addition, we may seek additional capital due to market conditions or strategic considerations even if we believe we have sufficient funds for our current or future operating plans. Due to uncertainty in the general economic, market and political climate, we may determine that it is necessary or appropriate to raise additional funds proactively to meet longer-term anticipated operating plans. To the extent that we raise additional capital through the sale of equity or convertible debt securities, including pursuant to the 2023 Sales Agreement, your ownership interest as a stockholder may be diluted, and the terms may include liquidation or other preferences that materially and adversely affect your rights as a stockholder. In addition, we have borrowed, and in the future may borrow, additional capital from institutional and commercial banking sources to fund development and our future growth, including pursuant to our Pharmakon Loan Agreement or potentially pursuant to new arrangements with different lenders. We may borrow funds on terms under agreements, such as our Pharmakon Loan Agreement, that include restrictive covenants, including covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. Moreover, if we raise additional funds through alliance, collaborative or licensing arrangements with third parties, we may have to relinquish valuable rights to RYTELO or our technologies or grant licenses on terms that are not favorable to us.

Risks Related to our Indebtedness and ROYALTY PAYMENT OBLIGATIONS

Our level of indebtedness and debt service obligations could adversely affect our financial condition and may make it more difficult for us to fund our operations.

On November 1, 2024, we entered into the Pharmakon Loan Agreement. We drew the Tranche A Loan of $125.0 million on November 1, 2024 and as of November 1, 2024, the total outstanding principal amount under the Pharmakon Loan Agreement was $125.0 million. The tranches for the remaining $125.0 million available to us under the Pharmakon Loan Agreement are as follows: (a) a Tranche B Loan of $75.0 million, which is available until December 31, 2025 and is available at our option, subject to certain customary and limited conditions; and (b) a Tranche C Loan of $50.0 million, which is available until December 31, 2025, subject to certain conditions including achieving a certain revenue milestone on or prior to November 30, 2025. If we do not achieve such revenue milestone within the required timeline, we will not be eligible to draw down the Tranche C Loan. In addition, before we would consider drawing down any of the remaining tranches under the Pharmakon Loan Agreement, if available, we must first satisfy ourselves that we will have access to future alternate sources of capital, such as from commercial revenues or the equity capital markets or debt capital markets, in order to repay any additional principal borrowed, which we may be unable to do, in which case, our liquidity and ability to fund our operations may be substantially impaired.

All obligations under the Pharmakon Loan Agreement are secured by substantially all of our assets, including our intellectual property. Further, the terms of the Pharmakon Loan Agreement place restrictions on our operating and financial flexibility, and limit or prohibit our ability to dispose of certain assets, change our line of business, and engage in other significant transactions. This indebtedness may create additional financing risk for us, particularly if our business or prevailing financial market conditions are not conducive to paying off or refinancing the outstanding debt obligations at maturity. If we draw down any of the remaining tranches under the Pharmakon Loan Agreement, our indebtedness will increase, which would further increase our risk of being unable to pay off or refinance our outstanding debt obligations at maturity.

Our indebtedness could also have important negative consequences, including:

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we will need to repay the indebtedness by making payments of interest and principal, which will reduce the amount of cash available to finance our operations, our research and development efforts and other general corporate activities; and
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our failure to comply with the obligations of our affirmative and restrictive covenants in the Pharmakon Loan Agreement could result in an event of default that, if not cured or waived, would permit the Lenders to accelerate our obligation to repay this indebtedness, and the Lenders could seek to enforce their security interest in the assets securing such indebtedness.

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In addition, we may borrow additional capital in the future to fund clinical development and our future growth, including pursuant to the Pharmakon Loan Agreement or potentially pursuant to new arrangements with different lenders. To the extent additional debt is added to our current debt levels, the risks described above could increase.

The terms of the Pharmakon Loan Agreement place restrictions on our operating and financial flexibility.

The Pharmakon Loan Agreement imposes operating and other restrictions on us. Such restrictions will affect, and in many respects limit or prohibit, our ability and the ability of our subsidiaries to, among other things:

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dispose of certain assets;
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change our line of business;
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engage in mergers, acquisitions or consolidations;
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incur additional indebtedness;
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create liens on assets;
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pay dividends and make contributions or repurchase our capital stock; and
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engage in certain transactions with affiliates.

We may not have cash available in an amount sufficient to enable us to make interest or principal payments on our indebtedness when due.

Our ability to make scheduled interest payments on or to refinance our indebtedness depends on our future performance and ability to raise additional sources of cash, which is subject to economic, financial, competitive and other factors beyond our control. If we are unable to generate sufficient cash to service our debt, we may be required to adopt one or more alternatives, such as selling assets, restructuring our debt or obtaining additional equity capital on terms that may be onerous or highly dilutive. If we desire to refinance our indebtedness, our ability to do so will depend on the state of the capital and lending markets and our financial condition at such time. We may not be able to engage in any of these activities or engage in these activities on desirable terms, which could result in a default on our debt obligations.

Failure to satisfy our current and future debt obligations under the Pharmakon Loan Agreement or to comply with certain covenants in the Pharmakon Loan Agreement could result in an event of default, the occurrence and continuance of which provides the lenders with the right to demand immediate repayment of all outstanding obligations under the Pharmakon Loan Agreement (and in the case of certain insolvency, liquidation, bankruptcy or similar events, automatically requires immediate repayment of all outstanding obligations under the Pharmakon Loan Agreement), and to exercise remedies against us and the collateral securing the Pharmakon Loan Agreement. These events of default include, among other things:

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insolvency, liquidation, bankruptcy or similar events;
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failure to observe covenants under the Pharmakon Loan Agreement and ancillary collateral documents, which failure, in certain limited cases, is not cured within 10 or 20 days;
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the occurrence of a withdrawal event in respect to RYTELO;
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the occurrence of a material adverse change;
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material misrepresentations;
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certain cross-default of third-party indebtedness or certain default or termination events of hedging assessments;
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certain money judgments being entered against us which are not timely paid, discharged or stayed; and
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our assets are attached or seized.

In the event of default, the lenders could accelerate all of the amounts due under the Pharmakon Loan Agreement. Under such circumstances, we may not have enough available cash or be able to raise additional funds through equity or debt financings to repay such indebtedness at the time of such acceleration. In that case, we may be required to delay, limit, reduce or terminate our RYTELO development or commercialization efforts or grant to

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others rights to develop and market RYTELO. The lenders could also exercise their rights to take possession and dispose of the collateral securing the Pharmakon Loan Agreement, which collateral includes substantially all of our property including, without limitation, our intellectual property, subject to certain exceptions. Our business, financial condition and results of operations could be materially adversely affected as a result of any of these events.

The Royalty Pharma Agreement places certain restrictions on our operational flexibility.

The Royalty Pharma Agreement contains covenants that impose on us certain obligations with respect to royalty payments, diligence, reporting, indemnification and includes restriction on intellectual property transfers and out-licenses, and certain other actions. The Royalty Pharma Agreement also limits our ability to create or incur liens or dispose of certain assets related to imetelstat. We have no rights to repurchase the revenue interests in RYTELO sold to Royalty Pharma (other than in connection with a change of control event), thereby limiting our ability to eliminate future applicability of the covenants contained in the Royalty Pharma Agreement. Compliance with these covenants may limit our flexibility in operating our business and our ability to take actions that might otherwise be advantageous to us and our stockholders.

Risks Related to Protecting Our Intellectual Property

If we are unable to obtain and maintain sufficient intellectual property protection and relevant regulatory exclusivities for RYTELO, both in the U.S. and in other countries, our competitors could develop and commercialize products similar or identical to RYTELO, and our ability to successfully commercialize RYTELO may be adversely affected.

Protection of our proprietary technology is critically important to our business. Our success and the success of our commercialization and planned future development of RYTELO will depend on our ability to protect our technologies and RYTELO through patents, regulatory exclusivity, and other intellectual property rights. Our success will depend in part on our ability to obtain, maintain, enforce, and extend our patents and maintain trade secrets, both in the U.S. and in other countries.

The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, and our patents may be challenged in the courts or patent offices in the U.S. and in other countries. Such challenges may result in loss of exclusivity or in patent claims being narrowed, invalidated, or held unenforceable, which could limit our ability to stop others from using or commercializing RYTELO or our technology and/or limit the duration of the patent protection for RYTELO and our technology. In the event that we are unsuccessful in obtaining, maintaining, enforcing and extending our patents and other intellectual property rights or having our licensors maintain the intellectual property rights we have licensed, the value of RYTELO and/or our technologies will be adversely affected, and we may not be able to further develop or commercialize RYTELO.

While we have method-of-use patents that protect the use of RYTELO for the treatment of certain diseases, this type of patent does not prevent a generic competitor from making and marketing a product that is identical to RYTELO for an indication that is outside the scope of our approved use after our composition-of-matter patents or their patent term extensions, and any regulatory exclusivities have expired. Moreover, even if competitors do not actively promote their product for our approved indications, physicians may prescribe or use these generic products “off-label,” which would result in decreased sales for us.

In addition to our patents covering RYTELO, we also expect to rely on regulatory exclusivity, including orphan drug exclusivity of up to 7 years in the U.S. and 10 years in the EU following approval, to protect our rights to commercialize RYTELO for its approved uses, but such regulatory exclusivity may be limited or withdrawn. See “Risks Related to Regulatory Approval of RYTELO -- Although orphan drug designation has been granted to RYTELO for the treatment of MDS and MF in the U.S. and in the EU, these designations may not be maintained, which would eliminate the benefits associated with orphan drug designation, including market exclusivity, which could limit the period of exclusivity we are able to maintain for the commercialization of RYTELO, and would likely harm our business and business prospects.”

In addition to orphan drug exclusivity, we expect to rely on other forms of regulatory exclusivity to protect our ability to commercialize RYTELO. In the U.S., New Chemical Entity, or NCE, exclusivity would entitle us to four years of data exclusivity and one year of market exclusivity, for a total of five years of NCE exclusivity from the date of approval of the first-approved indication. Our request for NCE exclusivity is still pending with FDA, and might not be awarded or could be awarded and then later withdrawn. In Europe, New Active Substance, or NAS, exclusivity is expected to entitle us to eight years of data exclusivity and two years of market exclusivity, for a total of ten years of NAS exclusivity for the first-approved indication, but as with other forms of regulatory exclusivity, NAS exclusivity could be limited or withdrawn.

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Loss or impairment of our intellectual property rights related to RYTELO might further delay or halt ongoing or potential future clinical trials of RYTELO and any applications for regulatory approval, and might further delay or preclude any future development or commercialization of RYTELO by us. Furthermore, such loss of intellectual property rights could impair our ability to exclude others from commercializing products similar or identical to RYTELO and therefore result in decreased sales for us. Occurrence of any of these events would materially and adversely affect our financial results, business and business prospects, and might cause us to cease operations.

Obtaining and maintaining our patent rights depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for noncompliance with these requirements.

The USPTO and various governmental patent agencies in other countries require compliance with a number of procedural, documentary, fee payment, periodic maintenance fees, renewal fees, annuity fees and various other government fees on patents and/or patent applications. Failure to respond to official actions within prescribed time limits, and nonpayment of fees, for example, maintenance fees, renewal fees, and annuity fees could result in abandonment or lapse of a patent or patent application, resulting in partial or complete loss of patent rights in the jurisdiction. In such an event, potential competitors might be able to enter the market with the same or similar products to RYTELO, and this circumstance could harm our financial condition, business and business prospects. In addition, if we are responsible for patent prosecution and maintenance of patent rights in-licensed to us or jointly owned with us, any of the foregoing could expose us to liability to the applicable patent owner or patent co-owner.

Patent terms may be inadequate to protect our competitive position on RYTELO for an adequate amount of time.

Patents have a limited lifespan. In the U.S., the natural expiration of a patent is generally 20 years after its first effective nonprovisional filing date. As a result, our intellectual property may not provide us with sufficient patent rights to exclude others from commercializing products similar or identical to RYTELO.

In the U.S., the Hatch-Waxman Act permits one patent per approved product to receive a patent term extension of up to five years beyond its normal expiration. The length of the patent term extension is typically calculated as one half of the clinical trial period plus the entire period of time during the review of the NDA by the FDA, minus any time of delay by us during these periods. There is also a limit on the patent term extension to a term that is no greater than fourteen years from drug approval. Only one U.S. patent may receive patent term extension under the Hatch-Waxman Act. We have applied to the USPTO for patent term extension of some of our patents. Once the USPTO and the FDA determine the extension period for each proposed eligible patent, we will select the one patent to be extended. We expect to apply any patent term extension that is granted in the U.S. to our method of treatment patent for MDS and MF that expires on March 15, 2033. If such patent term extension is granted, we expect the term of the patent to extend through August 2037, although such timing is subject to approval by the USPTO as part of its review of our application for patent term extension and could differ from our calculation. Currently, communication of patent term extension approval and the length of the granted extension period by the USPTO may occur up to several years from filing of an application for patent term extension. Accordingly, we will decide on the specific patent to be extended only after such communication from the USPTO.

Similar extensions are also available in certain countries and territories outside the U.S., such as in Japan, and in Europe as Supplementary Protection Certificates, or SPCs. However, we might not be granted a patent term extension at all because of failure to satisfy any of the numerous applicable requirements. Moreover, the applicable authorities, including the FDA and the USPTO in the U.S., and any equivalent regulatory authorities and patent offices in other countries, may not agree with our assessment of whether such extensions are available, may refuse to grant extensions to our patents, or may grant more limited extensions than we request and could be less than five years. If we select and are granted a patent term extension on a recently filed and issued patent, we may not receive the full benefit of a possible patent term extension, if at all. Moreover, in some countries, the scope of protection for claims under patent term extension, if any, is limited to the product composition as approved and, for a method of treatment patent, to the approved indications. If we do not have sufficient patent life and regulatory exclusivity to protect RYTELO, our financial results, business and business prospects would be materially and adversely affected, which might cause us to cease operations.

In Europe and other countries, our composition of matter patent coverage expired in September 2024, and our method of treatment patent rights for MDS and MF expire in November 2033. Our method of treatment patents may be eligible for patent term extension of up to five years under an SPC, permitted under European Council (EC) Regulation No. 469/2009, or the European SPC Regulation, upon receipt of drug product approval, such as, for example, our method of treatment patent for MDS. In Europe, we have separate method of treatment patents

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covering MDS and MF, and a SPC may only be applied to one patent. Accordingly, in countries of the EEA, we must rely on regulatory exclusivity and our method of treatment patents.

If regulatory approval of RYTELO occurs after a patent has expired in a country that does not allow interim patent term extensions, as is the case in many countries and territories including Europe, we will be unable to obtain any patent term extension of that expired patent, and the duration of our patent rights may be limited. Accordingly, in Europe and such other similar countries and territories, we will not be able to seek patent term extension of our composition of matter patent, as it expired in September 2024. If we do not have sufficient patent life and regulatory exclusivity to protect RYTELO, our financial results, business and business prospects would be materially and adversely affected, which might cause us to cease operations.

Also, there are regulations for the listing of patents in the Approved Drug Products with Therapeutic Equivalence Evaluations, or the Orange Book. Some of our patents have been listed in the Orange Book. Manufacturers of generic drugs may challenge the listing. If an appropriate patent covering RYTELO is not listed in the Orange Book or is subsequently removed from the Orange Book, a manufacturer of generic drugs would not be required to provide advance notice to us of any abbreviated NDA filed with the FDA to obtain permission to sell a generic version of RYTELO. Any of the foregoing could harm our competitive position, business, financial condition, results of operations and prospects.

The validity, scope and enforceability of any patents listed in the Orange Book that cover RYTELO or its methods of use can be challenged by third parties and may not protect us from generic or innovator competition.

If a third party files an application under Section 505(b)(2) of the Federal Food, Drug and Cosmetic Act or an abbreviated new drug application, or ANDA, under Section 505(j) to obtain permission to sell a generic or follow-on version of RYTELO, and relies in whole or in part on studies conducted by or for us, the third-party will be required to certify to the FDA that either: (1) there is no patent information listed in the Orange Book with respect to our NDA for RYTELO; (2) the patents listed in the Orange Book have expired; (3) the listed patents have not expired, but will expire on a particular date and approval is sought after patent expiration; or (4) the listed patents are invalid or will not be infringed by the manufacture, use or sale of the third-party’s generic product. A certification that the new product will not infringe the Orange Book-listed patents for RYTELO, or that such patents are invalid, is called a paragraph IV certification. If the third-party submits a paragraph IV certification to the FDA, a notice of the paragraph IV certification must also be sent to us within 20 days after the third-party’s ANDA is accepted for filing by the FDA. We may then initiate a lawsuit to defend the patents identified in the notice. The filing of a patent infringement lawsuit within 45 days of receipt of the notice automatically prevents the FDA from approving the third-party’s ANDA until the earliest of 30 months or the date on which the patent expires, the lawsuit is settled, or the court reaches a decision in the infringement lawsuit in favor of the third-party. If the product has NCE exclusivity and the notice is given and the suit filed in the fifth year of exclusivity, the regulatory stay extends until 7.5 years after approval of the reference product. If we do not file a patent infringement lawsuit within the required 45-day period, the third-party’s ANDA will not be subject to the 30-month stay of FDA approval.

Our issued U.S. patents covering RYTELO or its methods of use may not provide adequate protection from competitive products if competitors receive approval of an ANDA application or are able to design around the patents. One or more competitors may circumvent these patents by filing a marketing application with the FDA for a competitive product containing the active moiety in RYTELO and successfully challenging the validity of the patents or successfully designing around the patents. Any successful challenge and/or designing around one or more of the patents could result in a generic version of RYTELO being commercialized before the expiration of the patents.

If the patents covering RYTELO or its methods of use are successfully challenged or designed around, or if we are unsuccessful in enforcing our patents against generics, we could face competition prior to the expiration of these patents, which could have a material adverse effect on our business, financial condition, results of operations and prospects.

We may be involved in lawsuits to protect or enforce our patents or other intellectual property rights, which could be expensive, time consuming and unsuccessful, and which could result in the invalidity or unenforceability of

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our patents covering RYTELO or its methods of use.

Competitors may infringe, misappropriate or otherwise violate our patents or other intellectual property rights. To counter infringement or unauthorized use, we may be required to file and prosecute legal claims against one or more third parties, which can be expensive and time-consuming, even if ultimately successful.

The initiation of a claim against a third party by us may also cause the third-party to bring counter claims against us, such as claims asserting that our patents are invalid or unenforceable. Grounds for a validity challenge could be an alleged failure to meet any of several statutory requirements, including lack of novelty, obviousness, non-enablement or lack of written description or non-statutory subject matter. Grounds for an unenforceability assertion could be an allegation that someone connected with prosecution of the patent withheld relevant material information from the USPTO, or made a materially misleading statement, during prosecution. Third parties may also raise similar validity claims before the USPTO in post-grant proceedings such as ex parte reexaminations, IPR or post-grant review, or oppositions or similar proceedings outside the U.S., in parallel with litigation or even outside the context of litigation.

In an infringement proceeding, a court may decide that a patent of ours is not valid or is unenforceable, or may refuse to stop the other party from using the technology at issue on the grounds that our patents do not cover the technology in question. The standards that courts use to interpret patents are not always applied predictably or uniformly and can change, particularly as new technologies develop. As a result, we cannot predict with certainty how much protection, if any, will be given to our patents if we attempt to enforce them and they are challenged in court and if any such lawsuits will ultimately be resolved successfully. Further, even if we prevail, the infringer may file an appeal and the court judgment may be overturned and/or that an adverse decision may be issued by an appeals court relating to the validity or enforceability of our patents. An adverse result in any litigation or defense proceedings could put one or more of our patents at risk of being invalidated or interpreted narrowly in a manner insufficient to achieve our business objectives. Even if we establish infringement, we may not seek, or the court may decide not to grant, an injunction against further infringing activity and instead award only monetary damages, which may or may not be an adequate remedy.

If a defendant were to prevail on a legal assertion of invalidity or unenforceability, we would lose at least part, and perhaps all, of any future patent protection for RYTELO, which could have a material adverse effect on our business, financial condition, results of operations and prospects. Additionally, any adverse outcome could allow third parties to commercialize RYTELO and compete directly with us, without payment to us.

Furthermore, if we are engaged in intellectual property litigation, there would be public announcements of filings, briefings, hearings, motions or other interim proceedings or developments. If securities analysts or investors perceive these events to be negative, it could have an adverse effect on the price of our common stock.

Many companies have encountered significant problems in protecting and defending intellectual property rights in jurisdictions outside the U.S. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents, trade secrets and other intellectual property protection, particularly those relating to biotechnology and pharmaceutical products, which could make it difficult for us to stop the infringement of our patents or marketing of competing products in violation of our proprietary rights generally. For example, many countries outside the U.S. have compulsory licensing laws under which a patent owner must grant licenses to third parties. Proceedings to enforce our patent rights in jurisdictions outside the U.S. could result in substantial costs and divert our efforts and attention from other aspects of our business, and could put our patents at risk of being invalidated or interpreted narrowly.

Changes in U.S. or international patent law or interpretations of such patent laws could diminish the value of our patents in general, thereby impairing our ability to protect our technologies and RYTELO.

The patent positions of pharmaceutical and biopharmaceutical companies, including ours, are highly uncertain and involve complex legal and technical questions. In particular, legal principles for biotechnology and pharmaceutical patents in the U.S. and in other countries are evolving, and the extent to which we will be able to obtain patent coverage to protect our technologies and RYTELO, or enforce or defend issued patents, is uncertain.

The U.S. has enacted and implemented wide-ranging patent reform legislation, including the Leahy-Smith America Invents Act, or the AIA, signed into law on September 16, 2011. The U.S. Supreme Court has ruled on

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several patent cases in recent years, either narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. Depending on actions by Congress, the federal courts, and the USPTO, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents or patents that we might obtain in the future. Similarly, changes in patent law and regulations in other countries or jurisdictions or changes in the governmental bodies that enforce them or changes in how the relevant governmental authority enforces patent laws or regulations may weaken our ability to obtain new patents or to enforce our existing patents or patents that we may obtain in the future. Occurrence of these events and/or significant impairment of our RYTELO patent rights could severely and adversely affect our financial results, business and business prospects, which might cause us to cease operations.

As a result of the AIA, in March 2013, the U.S. transitioned to a first-inventor-to-file system under which, assuming the other requirements for patentability are met, the first inventor to file a patent application is entitled to the patent. However, since the publication of discoveries in scientific or patent literature tends to lag behind actual discoveries by at least several months and sometimes several years, we are not able to be certain upon filing a patent application that the persons or entities that we name as inventors or applicants in our patent applications were the first to invent the inventions disclosed therein, or the first to file patent applications for these inventions. Thus, our ability to protect our patentable intellectual property depends, in part, on our ability to be the first to file patent applications with respect to our inventions, or inventions that were developed by our former collaboration partner and assigned to us, for the future development, commercialization and manufacture of RYTELO. As a result, if we are not the first inventor-to-file, we may not be able to obtain patents for discoveries that we otherwise would consider patentable and that we consider to be significant to the future success of RYTELO. Delay in the filing of a patent application for any purpose, including further development or refinement of an invention, may result in the risk of loss of patent rights.

In 2012, the European Patent Package, or EU Patent Package, was approved and included regulations with the goal of providing for a single pan-European Unitary Patent, and a new European Unified Patent Court, or UPC, for litigation of European patents. The EU Patent Package was ratified in February 2023 and currently covers certain EU states. As of June 1, 2023, all European patents, including those issued prior to ratification, by default automatically fall under the jurisdiction of the UPC and allow for the possibility of obtaining pan-European injunctions and are at risk of central revocation at the UPC in participating UPC states. Under the EU Patent Package, patent holders are permitted to “opt out” of the UPC on a patent-by-patent basis during an initial seven year transitional period after June 1, 2023. Owners of European patent applications who receive notice of grant after the EU Patent Package came into effect could, for the UPC contracting states, either obtain a Unitary Patent or validate the patent nationally and file an opt-out demand. The EU Patent Package may increase the uncertainties and costs surrounding the enforcement or defense of our issued European patents and pending applications. The full impact on future European patent filing strategy and the enforcement or defense of our issued European patents in member states and/or the UPC is not known.

Filing, prosecuting, maintaining, defending and enforcing patents for RYTELO and our technologies in all countries throughout the world would be prohibitively expensive, and our intellectual property rights in some countries outside the U.S. are less extensive than those in the U.S. The requirements for patentability may differ in certain countries, particularly in developing countries; thus, even in countries where we do pursue patent protection, there can be no assurance that any patents will issue with claims that cover RYTELO and our technologies.

We may not be able to protect our intellectual property rights in the U.S or worldwide and challenges to our owned or licensed patent rights would result in costly and time-consuming legal proceedings that could prevent or limit development or commercialization of RYTELO.

Our patents or those patent rights we have licensed, including patent rights that we may seek with respect to inventions made by past or future collaborators, may be challenged through administrative or judicial proceedings, which could result in the loss of important patent rights. For example, where more than one party seeks U.S. patent protection for the same technology in patent applications that are subject to the law before the implementation of the AIA, the USPTO may declare an interference proceeding in order to ascertain the party to which the patent should be issued. Patent interferences are typically complex, highly contested legal proceedings, subject to appeal. They are usually expensive and prolonged and can cause significant delay in the issuance of patents. Our pending patent applications or our issued patents, or those we have licensed and may license from others, may be drawn into interference proceedings or be challenged through post-grant review procedures or litigation, any of which could delay or prevent the issuance of patents, or result in the loss of issued patent rights. We may not be able to obtain from our past or future collaborators the information needed to support our patent rights which could result in the loss of important patent rights.

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Under the AIA, interference proceedings between patent applications filed on or after March 16, 2013, have been replaced with other types of proceedings, including derivation proceedings. The AIA also includes post-grant review procedures subjecting U.S. patents to post-grant review procedures similar to European oppositions, such as inter partes review, or IPR, covered business method post-grant reviews and other post-grant reviews. This applies to all our U.S. patents and those we have licensed and may license from others, even those issued before March 16, 2013. A third party could attempt to use the USPTO procedures to invalidate patent claims that would not have been invalidated if first challenged by the third party as a defendant in a district court action. U.S. patents owned or licensed by us may therefore be subject to post-grant review procedures, as well as other forms of review and re-examination. In addition, the IPR process under the AIA permits any person, whether they are accused of infringing the patent at issue or not, such as entities associated with hedge funds, to challenge the validity of certain patents. Significant impairment of our RYTELO patent rights could severely and adversely affect our financial results, business and business prospects, which might cause us to cease operations.

Certain jurisdictions, such as Europe, China, Japan, New Zealand and Australia, permit third parties to file oppositions or invalidation trials against granted patents or patents proposed to be granted. Because we seek to enable potential global commercialization of RYTELO, securing both proprietary protection and freedom to operate outside of the U.S. is important to our business.

Third party proceedings such as oppositions and invalidation trials require significant time and costs, and if we are unsuccessful or are unable to commit these types of resources to protect our RYTELO patent rights, we could lose our patent rights and we could be prevented or limited in the development and commercialization of RYTELO.

As more groups become engaged in scientific research and product development in the areas of telomerase biology and hematologic malignancies, the risk of our patents, or patents that we have in-licensed, being challenged through patent interferences, derivation proceedings, IPRs, post-grant proceedings, oppositions, invalidation trials, re-examinations, litigation or other means will likely increase. Challenges to our patents through these procedures would be extremely expensive and time-consuming, even if the outcome was favorable to us. An adverse outcome in a patent dispute could severely harm our ability to further develop or commercialize RYTELO, or could otherwise have a material adverse effect on our business, and might cause us to cease operations, by:

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causing us to lose patent rights in the relevant jurisdiction(s);
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subjecting us to litigation, or otherwise preventing us from commercializing RYTELO in the relevant jurisdiction(s);
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requiring us to obtain licenses to the disputed patents;
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forcing us to cease using the disputed technology; or
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requiring us to develop or obtain alternative technologies.

We may be subject to infringement claims that are costly to defend, and such claims may limit our ability to use disputed technologies and prevent us from pursuing research, development, manufacturing or commercialization of RYTELO.

The commercial success of RYTELO will depend upon our ability to research, develop, manufacture, market and sell RYTELO without infringing or otherwise violating the intellectual property and other proprietary rights of third parties. There is considerable intellectual property litigation in the biotechnology and pharmaceutical industries, and many pharmaceutical companies, including potential competitors, have substantial patent portfolios. Since we cannot be aware of all intellectual property rights potentially relating to RYTELO and its uses, we do not know with certainty that RYTELO, or the commercialization thereof, does not and will not infringe or otherwise violate any third party’s intellectual property. For example, we are aware that certain third parties have or may be prosecuting patents and patent estates that may relate to RYTELO, and while these patents have expired, or we believe that a reasonable court should find they are invalid and/or would not be infringed by the manufacture, use or sale of RYTELO, it is possible that the owner(s) of these patents will assert claims against us in the future.

In the event our technologies infringe the rights of others or require the use of discoveries and technologies controlled by third parties, we may be prevented from pursuing research, development, manufacturing or commercialization of RYTELO, or may be required to obtain unblocking licenses from such third parties, develop alternative non-infringing technologies, which we may not be able to do at an acceptable cost or on acceptable terms, or at all, or cease the commercialization and continued development of RYTELO. If we are unable to resolve an infringement claim successfully, we could be subject to an injunction that would prevent us from commercializing RYTELO and could also require us to pay substantial damages.

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In addition, while our past collaboration agreements have terminated, we are still subject to indemnification obligations to certain collaborators, including with respect to claims of third-party patent infringement. In addition to infringement claims, in the future we may also be subject to other claims relating to intellectual property, such as claims that we have misappropriated the trade secrets of third parties. Our success therefore depends significantly on our ability to operate without infringing patents and the proprietary rights of others.

We may become aware of discoveries and technologies controlled by third parties that are advantageous or necessary to further develop or manufacture RYTELO. Under such circumstances, we may initiate negotiations for licenses to other technologies as the need or opportunity arises. We may not be able to obtain a license to a technology required to pursue the research, development, manufacturing or commercialization of RYTELO on commercially favorable terms, or at all, or such licenses may be terminated on certain grounds, including as a result of our failure to comply with any material obligations under such licenses. If we do not obtain a necessary license or if such a license is terminated, we may need to redesign such technologies or obtain rights to alternative technologies, which may not be possible, and even if possible, could cause further delays in the development efforts for RYTELO and could increase the development and/or production costs of RYTELO. In cases where we are unable to license necessary technologies, we could be subject to litigation and prevented from pursuing research, development, manufacturing or commercialization of RYTELO, which would materially and adversely impact our business. Failure by us to obtain rights to alternative technologies or a license to any technology that may be required to pursue research, development, manufacturing or commercialization of RYTELO would further delay current and potential future clinical trials of RYTELO and any applications for regulatory approval, impair our ability to sell RYTELO, and therefore result in decreased sales of RYTELO for us. Occurrence of any of these events could materially and adversely affect our business and might cause us to cease operations.

We have a registered trademark, RYTELO, for our product and failure to maintain such trademark could adversely affect our business.

We have a registered trademark, RYTELO, which is the commercial trade name for imetelstat, in a number of countries and regions, including in the U.S. and Europe. Opposition or cancellation proceedings, however, may be filed against our trademarks, and our trademarks may not survive such proceedings. If our United States trademark application which forms the basis for our international registration, or IR, for our commercial trade name is withdrawn or abandoned within the first 5 years of our IR, we will lose our IR registrations which could adversely affect our business. We may be unable to maintain or enforce our current and future trademarks, and if we fail to satisfy the applicable regulatory requirements, we may not have enforceable trademark rights or registrations in such jurisdictions. Our product trademark, RYTELO, is approved by the FDA and the EMA.

We may become involved in disputes with past or future collaborator(s) over intellectual property inventorship, ownership or use, and publications by us, or by investigators, scientific consultants, research collaborators or others. Such disputes could impair our ability to obtain patent protection or protect our proprietary information, which, in either case, could have a significant impact on our business.

Inventions discovered under research, material transfer or other collaboration agreements may become jointly owned by us and the other party to such agreements in some cases and may be the exclusive property of either party in other cases. Under some circumstances, it may be difficult to determine who invents and owns a particular invention, or whether it is jointly owned, and disputes can arise regarding inventorship, ownership and use of those inventions. These disputes could be costly and time-consuming, and an unfavorable outcome could have a significant adverse effect on our business if we are not able to protect or license rights to these inventions. In addition, clinical trial investigators, scientific consultants and research collaborators generally have contractual rights to publish data and other proprietary information, subject to review by the trial sponsor. Publications by us, or by investigators, scientific consultants, previous employees, research collaborators or others, either with permission or in contravention of the terms of their agreements with us or with our past or future collaborators, may impair our ability to obtain patent protection or protect proprietary information which could have a material adverse effect on our business, and might cause us to cease operations.

Much of the information and know-how that is critical to our business is not patentable, and we may not be able to prevent others from obtaining this information and establishing competitive enterprises.

We rely on trade secrets to protect our proprietary technology, especially in circumstances in which we believe patent protection is not appropriate or available. We attempt to protect our proprietary technology in part by confidentiality agreements with our employees, consultants, collaborators and contractors. However, we cannot provide assurance that these agreements will not be breached, that we would have adequate remedies for any breach,

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or that our trade secrets will not otherwise become known or be independently discovered by competitors, any of which would harm our business significantly.

In May 2016, the Defend Trade Secrets Act of 2016, or the DTSA, was enacted, providing a federal cause of action for misappropriation of trade secrets. Under the DTSA, an employer may not collect enhanced damages or attorney fees from an employee or contractor in a trade secret dispute brought under the DTSA, unless certain advanced provisions are observed. We cannot provide assurance that our existing agreements with employees and contractors contain notice provisions that would enable us to seek enhanced damages or attorneys’ fees in the event of any dispute for misappropriation of trade secrets brought under the DTSA.

Risks Related to Managing Our Growth and Other Business Operations

We may be unable to successfully retain or recruit key personnel to support the commercialization and further development of RYTELO or to otherwise successfully manage our growth.

Our ability to successfully commercialize RYTELO in the U.S. for lower-risk MDS and in any other jurisdiction or indication for which it is approved, and to continue to develop RYTELO in other myeloid hematologic malignancies depends to a significant extent on the skills, experience and efforts of our executive officers and key members of our staff. In addition, we need to recruit, maintain, motivate and integrate additional personnel with expertise and experience in sales, marketing, market access, commercial operations, pricing, clinical science, biostatistics, clinical operations, pharmacovigilance, quality, manufacturing, regulatory affairs, medical affairs, legal affairs, and compliance to enable us to further commercialize and further develop RYTELO.

We face intense competition for qualified individuals from numerous pharmaceutical, biopharmaceutical and biotechnology companies, as well as academic and other research institutions, and competition in our geographic regions is particularly intense. The substantial risks and uncertainties related to our commercialization and further development of RYTELO, and the risks and uncertainties regarding our future business viability could have an adverse impact on our ability to retain and recruit qualified personnel. We may also face higher than expected personnel costs in order to attract new personnel due to shortages in qualified applicants, or to maintain our current management and personnel due to the increased number of opportunities in the biotechnology sector. If we are unable to successfully retain, motivate and incentivize our existing personnel, or to attract, assimilate and retain other highly qualified personnel in the future on acceptable terms, our ability to commercialize and further develop RYTELO will be impaired, and our business and the price of our common stock would be adversely impacted.

In addition, our personnel are currently performing their duties in multiple jurisdictions, and if we are unable or fail to comply with employment, tax, benefits and other laws in such jurisdictions, we may face penalties, fines or litigation.

Our future financial performance and our ability to develop, manufacture and commercialize RYTELO depends, in part, on our ability to effectively manage any future growth. Our management may have to divert financial and other resources, as well as devote a substantial amount of time, to managing growth activities, such as enhancing operational, financial and management processes and systems. If we do not effectively manage the expansion of our operations, we could experience weaknesses in our infrastructure and ability to comply with applicable legal and regulatory requirements and regulations, operational mistakes or shortcomings, loss of business opportunities, loss of employees and reduced productivity among remaining employees.

If we seek to establish potential future collaborative arrangements for RYTELO, we may be unable to establish such collaborative arrangements on acceptable terms, or at all, and may have to delay, alter or abandon commercialization or further development of RYTELO.

We intend to develop RYTELO broadly for hematologic malignancies, and to commercialize, market and sell RYTELO in the U.S. for certain patients with lower-risk MDS and potentially in the EU for certain patients with lower-risk MDS. We may seek to self-commercialize or seek a collaborative partner or partners, at an appropriate time, to assist us in the potential development and commercialization of RYTELO outside the U.S., and to provide funding for such activities. We face significant competition in seeking appropriate collaborative partners, and these potential collaborative arrangements are complex and time consuming to negotiate, document and implement. Our ability to seek and establish potential collaborative arrangements may be impacted by delays in marketing approvals of RYTELO in lower-risk MDS in the EU and in reporting results from IMpactMF, as well as the period of the patent protection and market exclusivity for RYTELO. In addition, the terms of our Pharmakon Loan Agreement may limit our ability to enter into certain collaborative arrangements and any future debt agreements may continue or further limit our ability to enter into such agreements. We may not be able to establish collaborative arrangements on acceptable terms, or at all. In this regard, collaborative arrangements with third parties may require us to

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relinquish material rights, including revenue from commercialization, or assume material ongoing development obligations that we would have to fund or otherwise support.

If we are unable to negotiate collaborative arrangements, we may have to:

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delay, curtail or abandon the additional development of RYTELO;
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delay, curtail or abandon the commercialization of RYTELO in jurisdictions where it is approved;
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reduce the scope of potential future sales or marketing activities; or
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increase our expenditures and undertake development or commercialization activities at our own expense, which will require additional capital than our current resources.

We have established subsidiaries in the United Kingdom and the Netherlands, which exposes us to additional costs and risks.

The wholly-owned subsidiaries we have established in the U.K. and the Netherlands subject us to certain additional costs and risks associated with doing business outside the U.S., including:

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the increased complexity and costs inherent in managing international operations in geographically disparate locations;
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challenges and costs of complying with diverse regulatory, financial and legal requirements, which are subject to change at any time;
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potentially adverse tax consequences, including changes in applicable tax laws and regulations;
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potentially costly trade laws, tariffs, export quotas, custom duties or other trade restrictions, and any changes to them, including in connection with new Trump administration changes;
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compliance with tax, employment, immigration and labor laws for employees living or traveling abroad;
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challenges inherent in efficiently managing employees in diverse geographies, including the need to adapt systems, policies, benefits and compliance programs to differing labor and other regulations;
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natural disasters, political and economic instability, including terrorism and civil and political unrest, outbreak of health epidemics, and the resulting global economic and social impacts; and
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workforce uncertainty in countries where labor unrest is more common than in the U.S.

We may not be able to obtain or maintain sufficient insurance on commercially reasonable terms or with adequate coverage against potential liabilities in order to protect ourselves against claims such as product liability or personal injury claims arising from our commercialization of RYTELO, claims related to clinical trial conduct, or claims related to data protection.

Our business exposes us to potential product liability and other risks that are inherent in the testing, manufacturing and marketing of human therapeutic products. We may become subject to product liability or personal injury claims related to the commercialization of RYTELO, or claims related to clinical trial conduct, including if the use of RYTELO is alleged to have injured patients, such as injuries alleged to arise from any hepatotoxicity or hemorrhagic event associated with the use of RYTELO. We currently have product liability and clinical trial liability insurance that we believe is adequate, but we may experience losses in excess of our coverage or that are not covered by our insurance, and we may not be able to maintain this type of insurance for the commercialization of RYTELO, or any of our current or potential future clinical trials of RYTELO. In addition, this type of insurance may become too expensive for us to afford because of the highly risky and uncertain nature of commercialization of RYTELO, clinical trials generally and the high cost of insurance for our business activities. We may be unable to obtain or maintain clinical trial insurance in all of the jurisdictions where we conduct current or potential future clinical trials. In addition, business liability, product liability and cybersecurity insurance are becoming increasingly expensive, particularly for biotechnology and pharmaceutical companies, and the pool of insurers offering insurance coverage to biotechnology and pharmaceutical companies generally is becoming smaller, making it more difficult to obtain insurance for our business activities at a reasonable price, or at all. Being unable to obtain or maintain product liability, clinical trial liability, cybersecurity or other insurance for our business activities in the future on acceptable terms or with adequate coverage against potential liabilities would have a material

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adverse effect on our business, and could cause us to limit or cease our commercialization and further development of RYTELO.

In the past, we and certain of our officers have been named as defendants in securities class action lawsuits and shareholder derivative lawsuits. Potential similar or related lawsuits that may be filed in the future, could result in substantial damages, divert management’s time and attention from our business, and have a material adverse effect on our results of operations. Any such lawsuits, or other lawsuits to which we are subject, will be costly to defend or pursue and are uncertain in their outcome.

We are not currently a party to any material pending legal proceedings. However, securities class action lawsuits and/or derivative lawsuits have often been brought against companies, including biotechnology and biopharmaceutical companies, that experience volatility in the market price of their securities. This risk is especially relevant for us because we often experience significant stock price volatility in connection with our activities. In 2020, three securities class action lawsuits were filed against us and certain of our officers. One of the lawsuits was voluntarily dismissed, and final judgment with respect to the other two lawsuits was entered in October 2023. In 2020 and 2021, seven shareholder derivative actions were filed in a number of courts, naming as defendants certain of our then current officers and certain of our then current and former members of our board. All seven of the shareholder derivative actions were dismissed with prejudice.

While we settled these lawsuits, it is possible that additional lawsuits might be filed, or allegations might be received from stockholders, with respect to these same or other matters and also naming us and/or our officers and directors as defendants. Such lawsuits and any other related lawsuits are subject to inherent uncertainties, and the actual defense and disposition costs will depend upon many unknown factors. We could be forced to expend significant resources in the defense of any additional lawsuits, and we may not prevail. Monitoring, initiating and defending against legal actions is time-consuming for our management, is likely to be expensive and may detract from our ability to fully focus our internal resources on our business activities. We could be forced to expend significant resources in any potential future lawsuits, and we may not prevail in such lawsuits. Additionally, we may not be successful in having any such lawsuits dismissed or settled within the limits of our insurance coverage.

A decision adverse to our interests in any legal proceedings, could result in the payment of substantial damages, or possibly fines, and could have a material adverse effect on our business, our stock price, cash flow, results of operations and financial condition.

We may be subject to third-party litigation, and such litigation would be costly to defend or pursue and uncertain in its outcome.

Our business may bring us into conflict with our licensees, licensors, or others with whom we have contractual or other business relationships, or with our competitors or others whose interests differ from ours. Our commercial launch of RYTELO may result in product or personal injury disputes, or other disputes with health care providers, patients or other third parties as a result of our commercialization efforts. We may experience employment-related disputes. We may become involved in performance or other disputes with the CROs we have retained to support our clinical development activities, or with other third parties such as service providers, vendors, manufacturers, suppliers or consultants. If we are unable to resolve those conflicts on terms that are satisfactory to all parties, we may become involved in litigation brought by or against us.

Lawsuits are subject to inherent uncertainties, and defense and disposition costs depend upon many unknown factors. Despite the availability of insurance, we may incur substantial legal fees and costs in connection with litigation. Lawsuits could result in judgments against us that require us to pay damages, enjoin us from certain activities, or otherwise negatively affect our legal or contractual rights, which could have a significant adverse effect on our business. In addition, the inherent uncertainty of such litigation could lead to increased volatility in our stock price and a decrease in the value of our stockholders’ investment in our securities.

We are subject to U.S. and certain foreign export and import controls, sanctions, embargoes, anti-corruption laws, and anti-money laundering laws and regulations. Compliance with these legal standards could impair our ability to compete in domestic and international markets. We can face criminal liability and other serious consequences for violations, which can harm our business.

We are subject to export control and import laws and regulations, and other state and national anti-bribery and anti-money laundering laws in the countries in which we conduct activities. Anti-corruption laws are interpreted broadly and prohibit companies and their employees, agents, contractors, and other collaborators from authorizing,

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promising, offering, or providing, directly or indirectly, improper payments or anything else of value to recipients in the public or private sector. We may engage third parties to sell our products outside the United States, to conduct clinical trials, and/or to obtain necessary permits, licenses, patent registrations, and other regulatory approvals. We have direct or indirect interactions with officials and employees of government agencies or government-affiliated hospitals, universities, and other organizations. We can be held liable for the corrupt or other illegal activities of our employees, agents, contractors, and other collaborators, even if we do not explicitly authorize or have actual knowledge of such activities. Any violations of the laws and regulations described above may result in substantial civil and criminal fines and penalties, imprisonment, the loss of export or import privileges, debarment, tax reassessments, breach of contract and fraud litigation, reputational harm, and other consequences.

RISKS RELATED TO INFORMATION TECHNOLOGY SYSTEMS, DATA SECURITY AND DATA PRIVACY

If our information technology systems or data, or those of third parties with whom we work, are or were compromised, we could experience adverse consequences resulting from such compromise, including regulatory investigations or actions; litigation; fines and penalties; a disruption of our business operations, including our clinical trials; reputational harm; loss of revenue and profits; and other adverse consequences.

In the ordinary course of our business, we (and third parties with whom we work) collect, receive, store, use, transfer, make accessible, protect, secure, dispose of, transmit, disclose, or otherwise process (commonly known as processing) proprietary, confidential, and sensitive data, including personal data (such as health-related data and participant study related data), intellectual property, and trade secrets (collectively, sensitive information). In addition, we rely on third-party service providers to establish and maintain appropriate information technology and data security protections, including disaster recovery and business continuity procedures, over the information technology systems they provide us to operate our critical business systems, including cloud-based infrastructure and systems, employee email, and data storage and management systems. However, except for contractual duties and obligations, we have limited ability to control or monitor third parties’ safeguards and actions related to such matters, and these third parties may not have adequate information security measures in place. Furthermore, while we may be entitled to damages if our third-party service providers fail to satisfy their privacy or security-related obligations to us, any award may be insufficient to cover our damages, or we may be unable to recover such award. Most of our employees work remotely, resulting in increased risks of loss or theft of company devices as well as increased risks to our information technology systems and data, as employees utilize network connections, computers, and devices outside our premises and networks, including working at home and while in transit and in public locations. Additionally, the prevalent use of mobile devices that access our sensitive information increases the risk of security incidents.

Future or past business transactions (such as acquisitions or integrations) could expose us to additional cybersecurity risks and vulnerabilities, as our systems could be negatively affected by vulnerabilities present in acquired or integrated entities’ systems and technologies. Furthermore, we may discover security issues that were not found during due diligence of such acquired or integrated entities, and it may be difficult to integrate companies into our information technology environment and security program.

Our information technology systems, including in our remote work environment, and those of the third parties with whom we work, have been in the past and may continue to be vulnerable to evolving threats. These threats are prevalent, continue to increase, and come from a variety of sources such as traditional “hackers,” threat actors, “hacktivist,” organized criminal threats actors, or internal bad actors, personnel (such as through theft, error or misuse), sophisticated nation states and nation-state-supported actors. These threats include, but are not limited to, social-engineering attacks, targeted phishing campaigns, malicious code or malware, unauthorized intrusions, denial-of-service attacks, personnel misconduct or errors, ransomware attacks, supply-chain attacks, software bugs, computer viruses, server malfunctions, software, hardware or data center failures, loss of data or other information technology assets, natural disasters, terrorism, war, telecommunication and electrical failures and attacks enhanced or facilitated by artificial intelligence, or AI, and other similar threats. In particular, ransomware attacks are becoming increasingly prevalent and severe and can lead to significant interruptions in operations, loss of sensitive data and income, reputational harm, and diversion of funds.

If we were to experience such an attack, extortion payments might alleviate the negative impact of a ransomware attack, but we might be unwilling or unable to make such payments due to, for example, applicable laws or regulations prohibiting such payments. Similarly, supply-chain attacks and attacks on clinical trial sites as well as regulatory and health authorities have increased in frequency and severity, and we cannot guarantee that third parties and infrastructure in our supply chain or our third-party partners’ supply chains, or of clinical trial sites and regulatory and health authorities, have not been compromised or that they do not contain exploitable defects or

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bugs that could result in a breach of or disruption to our information technology systems or the third-party information technology systems that support us and the services provided to us, or remediate and recover compromised systems in a timely manner. For example, in February 2024, one of our service providers that processes clinical trial data experienced a security incident that resulted in certain of the service provider’s information systems being unavailable for a limited period of time. Based on the service provider’s forensic investigation findings that were shared with us, we believe that this incident did not have a material impact on us, our clinical trials or clinical trial participants. As another example, in March 2024, we learned about another security incident, involving another service provider, that processes personnel data for our limited number of UK personnel and directors of Geron UK Ltd. Following the service provider’s forensic investigation, the service provider informed us that it did not determine the specific data involved or the incident’s impact. While we believe that this incident did not have a material impact on us, out of an abundance of caution, we submitted a notification to the UK Information Commissioner’s Office and notified potentially affected personnel and directors of the incident.

Any of these or similar incidents or threats may result in unauthorized, unlawful or accidental loss, corruption, access, modification, destruction, alteration, acquisition or disclosure of sensitive information, such as clinical trial data or information, intellectual property, proprietary business data and personal data. The costs to us to attempt to protect against such security incidents could be significant, including potentially requiring us to modify our business, and while we have implemented security measures, policies and procedures designed to protect our information technology systems from cybersecurity threats and to identify and remediate vulnerabilities, such measures may not be fully implemented, complied with or successful in protecting our systems and information. We may expend significant resources or modify our business activities (including our clinical trial activities) to try to protect against security incidents. We may be unable in the future to detect cybersecurity threats or vulnerabilities in our information technology systems because such threats and techniques change frequently, are sophisticated in nature, and may not be detected until after a security incident has occurred. We may also experience security breaches that may remain undetected for an extended period. Even if identified, we may be unable to adequately investigate or remediate incidents or breaches due to attackers increasingly using tools and techniques that are designed to circumvent controls, to avoid detection, and to remove or obfuscate forensic evidence. Unremediated high risk or critical vulnerabilities pose material risks to our business, particularly due to the reliance on software vendors to adequately patch and implement fixes to address critical or high-risk vulnerabilities in a timely manner. Further, we may be materially impacted by software updates applied by our software vendors if such updates cause significant downtime to our systems.

If we or third parties with whom we work experience or are perceived to have experienced a breach, we may experience material adverse consequences. These consequences may include: government enforcement actions (for example, investigations, fines, penalties, audits, and inspections), interruptions in our operations, including disruption of our commercialization and development efforts, interruptions or restrictions on processing sensitive data (which could result in delays in obtaining, or our inability to obtain, regulatory approvals and significantly increase our costs to recover or reproduce the data), reputational harm, litigation (including class action claims), indemnification obligations, negative publicity, financial loss, and other harms. In addition, such a breach may require public notification of the breach, or we may choose to voluntarily notify relevant stakeholders, or take other actions, such as providing credit monitoring and identity theft protection services, and we have done so in the past. Such disclosures are costly, and the disclosure or the failure to comply with such requirements could lead to adverse consequences.

In addition to experiencing a security incident, third parties may gather, collect, or infer sensitive information about us from public sources, data brokers, or other means that reveals competitively sensitive details about our organization and could be used to undermine our competitive advantage or market position. Additionally, sensitive information of the Company could be leaked, disclosed, or revealed as a result of or in connection with our employees’, personnel’s, or vendors’ use of generative AI technologies.

Many of our contracts with relevant stakeholders include obligations relating to the safeguard of sensitive information, and a breach could lead to claims against us by such stakeholders. There can be no assurance that the limitations of liability in our contracts would be enforceable or adequate or would otherwise protect us from liabilities, damages, or claims relating to our data privacy and security obligations. In addition, failure to maintain effective internal accounting controls related to data security breaches and cybersecurity in general could impact our ability to produce timely and accurate financial statements and could subject us to regulatory scrutiny.

If we fail to successfully implement or upgrade our enterprise resource planning and other information systems, our business and results of operation could be adversely impacted.

We periodically implement or upgrade new or enhanced enterprise resource planning, or ERP, and other business systems in order to better manage our business operations. Implementation or upgrade of new business

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processes and information systems requires the commitment of significant personnel, training and financial resources, and entails risks to our business operations. If we do not successfully implement ERP and other information systems improvements, or if there are delays or difficulties in implementing these systems, we may not realize anticipated productivity improvements or cost efficiencies, and we may experience operational difficulties and challenges in effectively managing our business, all of which could result in quality issues, reputational harm, lost market and revenue opportunities, and otherwise adversely affect our business, financial condition and results of operations.

For example, in 2024 we implemented a new ERP and other information systems to help us manage our operations and financial reporting. This project required, and may continue to require, investment of capital and human resources, the re-engineering of processes of our business, and the attention of many employees who would otherwise be focused on other aspects of our business. Costs and risks inherent in implementing new systems, such as the ERP that we implemented in 2024, may include disruptions to business continuity, administrative and technical problems, interruptions or delays in sales, expenditure overruns, delays in paying our suppliers and employees, and data migration issues. If we do not properly address or mitigate these issues, this could result in increased costs and diversion of resources, negatively impacting our operating results and ability to effectively manage our business. Additionally, if the ERP system that we implemented in 2024 does not operate as intended, the effectiveness of our internal control over financial reporting could be negatively affected.

We and third parties with whom we work are subject to stringent and changing U.S. and foreign laws, regulations, rules, contractual obligations, industry standards, policies and other obligations related to data privacy and security. Our (or the third parties with whom we work) actual or perceived failure to comply with such obligations could lead to regulatory investigations or actions; litigation; fines and penalties; disruptions of our business operations; reputational harm; loss of revenue and profits; and other adverse business impacts.

In the ordinary course of business, we process personal data and other sensitive data, including proprietary and confidential business data, trade secrets, intellectual property, clinical trial participant data, and other sensitive third-party data. We are therefore subject to or affected by numerous data privacy and security obligations, such as federal, state, local and foreign laws, regulations, guidance, industry standards, external and internal privacy and security policies, contracts, and other obligations governing the processing of personal data. These obligations may change, are subject to differing interpretations and may be inconsistent among jurisdictions or conflict. The global data protection landscape is rapidly evolving, and implementation standards and enforcement practices are likely to remain uncertain for the foreseeable future. This evolution may create uncertainty in our business; affect us or our collaborators’, service providers’ and contractors’ ability to operate in certain jurisdictions or to collect, store, transfer, use and share personal data; necessitate the acceptance of more onerous obligations in our contracts; result in liability; or impose additional costs on us. These obligations may necessitate changes to our information technologies, systems, and practices and to those of any third parties that process personal data on our behalf. In addition, these obligations may require us to change our business model.

Outside the U.S., an increasing number of laws, regulations, and industry standards apply to data privacy and security. For example, the European Union’s General Data Protection Regulation, or the EU GDPR, and the United Kingdom’s GDPR, or the UK GDPR (collectively, the “GDPR”), impose strict requirements on the processing of personal data.

For example, under GDPR, government regulators may impose temporary or definitive bans on data processing, fines of up to 20 million Euros under the EU GDPR, 17.5 million pounds sterling under the UK GDPR or, in each case, 4% of annual global revenue, whichever is greater; or private litigation related to processing of personal data brought by classes of data subjects or consumer protection organizations authorized at law to represent their interests.

In addition, we may be unable to transfer personal data from the EEA, the UK and other jurisdictions to the U.S. or other countries due to data localization requirements or limitations on cross-border data flows. The EEA and other jurisdictions have enacted laws requiring data to be localized or limiting the transfer of personal data to other countries. In particular, the EEA and the UK have significantly restricted the transfer of personal data to the United States and other countries whose privacy laws it believes are inadequate. Other jurisdictions may adopt similarly stringent interpretations of their data localization and cross-border data transfer laws. Although there are currently various mechanisms that may be used to transfer personal data from the EEA and UK to the U.S. in compliance with law, such as the EEA and UK’s standard contractual clauses, the UK’s International Data Transfer Agreement / Addendum, and the EU-U.S. Data Privacy Framework and the UK extension thereto (which allows for transfers to relevant U.S.-based organizations who self-certify compliance and participate in the Framework), these mechanisms

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are subject to legal challenges, and there is no assurance that we can satisfy or rely on these measures to lawfully transfer personal data to the U.S. If there is no lawful manner for us to transfer personal data from the EEA, the UK, or other jurisdictions to the U.S., or if the requirements for a legally-compliant transfer are too onerous, we could face significant adverse consequences, including the interruption or degradation of our operations, the need to relocate part of or all of our business or data processing activities to other jurisdictions (such as Europe) at significant expense, increased exposure to regulatory actions, substantial fines and penalties, the inability to transfer data and work with partners, vendors and other third parties, and injunctions against our processing or transferring of personal data necessary to operate our business. Additionally, companies that transfer personal data out of the EEA and UK to other jurisdictions, particularly to the United States, are subject to increased scrutiny from regulators, individual litigants, and activist groups, and some EEA regulators have prevented companies from transferring personal data out of the EEA for allegedly violating the EU GDPR’s cross-border data transfer limitations.

Likewise, we expect that there will continue to be new proposed laws, regulations and industry standards relating to data privacy and security in the U.S. For example, HIPAA, as amended by HITECH, imposes specific requirements relating to the privacy, security, and transmission of individually identifiable health data. Additionally, the California Consumer Privacy Act of 2018, as amended by the California Privacy Rights Act of 2020, or CPRA, collectively CCPA, imposes obligations on businesses to which it applies. These obligations include, but are not limited to, providing specific disclosures in privacy notices and affording California residents certain rights related to their personal data. The CCPA allows for statutory fines for noncompliance. While the CCPA contains limited exceptions for clinical trial data, the CCPA’s implementation standards and enforcement practices are likely to remain uncertain for the foreseeable future. In addition, the CPRA establishes a California Privacy Protection Agency to implement and enforce the CPRA, which could increase the risk of an enforcement action, and applies to personal data of business representatives and employees. Other states have also enacted data privacy and security laws. For example, Virginia passed the Consumer Data Protection Act, and Colorado passed the Colorado Privacy Act, both of which differ from the CPRA and became effective in 2023. If we become subject to new data privacy and security laws, at the state level or otherwise, the risk of enforcement action against us could increase because we may become subject to additional obligations, and the number of individuals or entities that can initiate actions against us may increase.

Our employees and personnel use generative AI technologies to perform their work, and the disclosure and use of personal data in generative AI technologies is subject to various privacy laws and other privacy obligations. Governments have passed and are likely to pass additional laws regulating generative AI. Our use of this technology could result in additional compliance costs, regulatory investigations and actions, and lawsuits. If we are unable to use generative AI, it could make our business less efficient and result in competitive disadvantages.

In addition to data privacy and security laws, we are contractually subject to industry standards adopted by industry groups and we are, and may become in the future, subject to such obligations. We are also be bound by other contractual obligations related to data privacy and security, and our efforts to comply with such obligations may not be successful. We may publish privacy policies, marketing materials, white papers, and other statements, such as statements relating to compliance with certain certifications or self-regulatory principles concerning data privacy and security. Regulators in the United States are increasingly scrutinizing these statements, and if these policies, materials or statements are found to be deficient, lacking in transparency, deceptive, unfair, misleading or misrepresentative of our practices, we may be subject to investigation, enforcement actions by regulators, or other adverse consequences.

It is possible that, in the future, we may fail or be perceived to have failed to comply with applicable data privacy and security obligations. Moreover, despite our best compliance efforts, we may not be successful in achieving compliance if our personnel or third parties with whom we work fail to comply with such obligations, which could negatively impact our business operations and compliance posture. If we or the third parties with whom we work fail, or are perceived to have failed, to address or comply with data privacy and security obligations, we could face significant consequences. These consequences may include, but are not limited to, government enforcement actions; litigation; additional reporting requirements and/or oversight; bans on processing personal data; orders to destroy or not use personal data; and imprisonment of company officials. Any of these events could have a material adverse effect on our reputation, business, or financial condition, including: interruptions or stoppages in our business operations including, as relevant, clinical trials; inability to process personal data or to operate in certain jurisdictions; limited ability to continue to develop or commercialize RYTELO; expenditure of time and resources to defend any claim or inquiry; adverse publicity; or revision or restructuring of our operations. Moreover, clinical trial participants or research subjects about whom we or our vendors obtain information, as well as the providers who share this information with us, may contractually limit our ability to use and disclose the information.

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Risks Related to Our Common Stock and Financial Reporting

Historically, our stock price has been extremely volatile and your investment may suffer a decline in value.

Historically, our stock price has been extremely volatile. Between January 1, 2014 and December 31, 2024, our stock has traded as high as $6.38 per share and as low as $0.89 per share. Between January 1, 2024 and December 31, 2024, the price has ranged between a high of $5.34 per share and a low of $1.64 per share. The significant market price fluctuations of our common stock have been due to and may in the future be influenced by a variety of factors, including:

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the level of RYTELO sales in the U.S.;
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announcements regarding regulatory approval or non-approval of RYTELO in any other jurisdictions or indications, or specific label indications for RYTELO; or restrictions, warnings or limitations in its use;
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announcements regarding the further research and development of RYTELO, or adverse efficacy or safety results of, further delays in the commencement, enrollment or conduct of, discontinuation of, or further modifications or refinements to any current or potential future clinical trials, for any reason, or our inability, for any reason, to successfully continue the development of RYTELO;
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our ability to obtain additional capital if and when needed to further advance our development program;
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changes in laws or regulations applicable to RYTELO, including laws or regulations concerning the commercialization of RYTELO or clinical trial requirements for approval or other regulatory developments related to RYTELO;
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announcements of technological innovations, new commercial products, or clinical progress or lack thereof by us, potential future collaborative partners or our competitors;
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adverse developments concerning our manufacturers, including our inability to obtain adequate product supply for RYTELO or inability to do so at acceptable prices;
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the size and growth of the market opportunity for RYTELO in its currently approved and any potential future approved indications;
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disputes or other developments relating to RYTELO proprietary rights, including patents, litigation matters and our ability to obtain, enforce and defend patent protection and maintain regulatory exclusivity for RYTELO and our technologies;
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the terms and timing of any future collaboration agreements for the further development and commercialization of RYTELO that we may establish;
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announcements of significant acquisitions, strategic partnerships, collaborations, joint ventures or capital commitments by us or our competitors;
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the demand in the market for our common stock;
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increased or continuing operating losses;
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general domestic and international market conditions or market conditions relating to the biopharmaceutical and pharmaceutical industries, especially given the volatility caused by macroeconomic or other global conditions, such as inflation, rising interest rates, prospects of a recession, government shutdowns, further changes in tariffs and other trade restrictions, bank failures and other disruptions to financial systems, civil or political unrest, military conflicts, pandemics or other health crises and supply chain and resource issues;
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perceptions of the biotechnology and pharmaceutical industry by the public, legislature, regulators and the investment community;
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our failure to meet the estimates and projections of the investment community or that we may otherwise provide to the public;
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publication of commentary, articles or research reports about us or our industry, or positive or negative recommendations or withdrawal of research coverage, by securities analysts, bloggers, news media or other third parties;
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large stockholders increasing or exiting their position in our common stock or an increase in the short interest in our common stock;

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•
sales of stock by our officers and directors;
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announcements of or developments concerning any litigation;
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actions instituted by activist shareholders or others;
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the issuance of common stock to partners, vendors or investors to raise additional capital or as a result of option or warrant exercises;
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other events or factors that are beyond our control; and
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the occurrence of any other risks and uncertainties discussed under the heading “Risk Factors.”

Provisions in our charter, bylaws and Delaware law may inhibit potential acquisition bids for us, which may adversely affect the market price of our common stock and/or prevent holders of our common stock from benefiting from what they believe may be the positive aspects of acquisitions and takeovers.

Provisions of our charter documents and bylaws may make it substantially more difficult for a third party to acquire control of us and may prevent changes in our management, including provisions that:

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prevent stockholders from taking actions by written consent;
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divide the board of directors into separate classes with terms of office that are structured to prevent all of the directors from being elected in any one year; and
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set forth procedures for nominating directors and submitting proposals for consideration at stockholders’ meetings.

In addition, our certificate of incorporation provides our board of directors with the authority to issue up to 3,000,000 shares of undesignated preferred stock and to determine or alter the rights, preferences, privileges and restrictions granted to or imported upon these shares without further vote or action by our stockholders. The issuance of shares of preferred stock may delay or prevent a change in control transaction without further action by our stockholders. As a result, the market price of our common stock may be adversely affected.

If in the future, we issue preferred stock that has preference over our common stock with respect to the payment of dividends or upon our liquidation, dissolution or winding up, or if we issue preferred stock with voting rights that dilute the voting power of our common stock, the rights of holders of our common stock or the market price of our common stock could be adversely affected.

Provisions of Delaware law may also inhibit potential acquisition bids for us or prevent us from engaging in business combinations. In addition, we have individual severance agreements with our executive officers and a company-wide severance plan, either of which could require a potential acquirer to pay a higher price. Either collectively or individually, these provisions may prevent holders of our common stock from benefiting from what they may believe are the positive aspects of acquisitions and takeovers, including the potential realization of a higher rate of return on their investment from these types of transactions.

The exclusive forum provisions in our amended and restated bylaws could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or any of our directors, officers, or employees, or the underwriters of any offering giving rise to such claim, which may discourage lawsuits with respect to such claims.

Our amended and restated bylaws provide that, unless we consent to the selection of an alternative forum, the Court of Chancery of the State of Delaware (or, if and only if the Court of Chancery of the State of Delaware lacks subject matter jurisdiction, any state court located within the State of Delaware or, if and only if all such state courts lack subject matter jurisdiction, the federal district court for the District of Delaware) will be the sole and exclusive forum for:

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any derivative claim or cause of action or proceeding brought on our behalf;
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any claim or cause of action for breach of a fiduciary duty owed by any of our current or former directors, officers or other employees, or our stockholders, to us or to our stockholders;

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any claim or cause of action against us or any of our current or former directors, officers or other employees, or our stockholders, arising pursuant to any provision of the General Corporation Law of the State of Delaware, our certificate of incorporation, or our bylaws;
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any claim or cause of action seeking to interpret, apply, enforce or determine the validity of our certificate of incorporation or bylaws;
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any claim or cause of action as to which the General Corporation Law of the State of Delaware confers jurisdiction on the Court of Chancery of the State of Delaware; or
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any claim or cause of action against us or any of our current or former directors, officers or other employees, or our stockholders, governed by the internal affairs doctrine or otherwise related to our internal affairs.

In addition, Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all claims brought to enforce any duty or liability created by the Securities Act of 1933, as amended, or the Securities Act, or the rules and regulations thereunder. Our amended and restated bylaws provide that the federal district courts of the United States of America will, to the fullest extent permitted by law, be the exclusive forum for resolving any complaint asserting a cause of action arising under the Securities Act, or the Federal Forum Provision, including for all causes of action asserted against any defendant named in such complaint. For the avoidance of doubt, this provision is intended to benefit and may be enforced by us, our officers and directors, the underwriters to any offering giving rise to such complaint, and any other professional entity whose profession gives authority to a statement made by that person or entity and who has prepared or certified any part of the documents underlying the offering. The application of the Federal Forum Provision means that suits brought by our stockholders to enforce any duty or liability created by the Securities Act must be brought in federal court and cannot be brought in state court, and our stockholders cannot waive compliance with the federal securities laws and the rules and regulations thereunder.

While the Delaware courts have determined that such choice of forum provisions are facially valid and several state trial courts have enforced such provisions and required that suits asserting Securities Act claims be filed in federal court, there is no guarantee that courts of appeal will affirm the enforceability of such provisions, and a stockholder may nevertheless seek to bring a claim in a venue other than those designated in the exclusive forum provisions. In such an instance, we would expect to vigorously assert the validity and enforceability of the exclusive forum provisions of our amended and restated bylaws. This may require significant additional costs associated with resolving such action in other jurisdictions, which costs could be borne by stockholders, and there can be no assurance that the provisions will be enforced by a court in those other jurisdictions.

Any person or entity purchasing or otherwise acquiring or holding any interest in any of our securities shall be deemed to have notice of and consented to the exclusive forum provisions in our amended and restated bylaws, including the Federal Forum Provision. These provisions could limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or any of our directors, officers, or other employees, or our stockholders or the underwriters of any offering giving rise to such claims, which may discourage lawsuits with respect to such claims. Furthermore, if a court were to find the exclusive forum provisions contained in our bylaws to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could have a material and adverse impact on our business and our financial condition.

We do not intend to pay cash dividends on our common stock in the foreseeable future.

We do not anticipate paying cash dividends on our common stock in the foreseeable future. Any payment of cash dividends will depend upon our financial condition, results of operations, capital requirements and other factors, and will be at the discretion of our board of directors. In addition, the terms of our Pharmakon Loan Agreement restrict our ability to pay dividends and any future debt agreements may continue to or further restrict our ability to pay dividends. As a result, capital appreciation, if any, of our common stock will be the sole source of gain for our stockholders for the foreseeable future.

Our employees, independent contractors, principal investigators, clinical trial sites, contract research organizations, consultants or vendors may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements.

We are exposed to the risk that our employees, independent contractors, principal investigators, clinical trial sites, CROs, consultants or vendors may engage in fraudulent or other illegal activity. Misconduct by these parties

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could include intentional, reckless and/or negligent conduct or disclosure of unauthorized activities to us that violate the FDA’s or similar international regulatory authorities’ regulations, including those laws requiring the reporting of true, complete and accurate information; manufacturing standards; healthcare fraud and abuse laws and regulations; or laws that require the true, complete and accurate reporting of financial information or data. Specifically, sales, marketing and business arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements.

Activities subject to these laws also involve the improper use or misrepresentation of information obtained in the course of clinical trials or creating fraudulent data in our non-clinical studies or clinical trials, which could result in regulatory sanctions and serious harm to our reputation. It is not always possible to identify and deter misconduct by our employees and third parties, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws or regulations. Additionally, we are subject to the risk that a person could allege such fraud or other misconduct, even if none occurred. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could adversely affect our business, financial condition, results of operations or prospects through:

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the imposition of civil, criminal and administrative penalties, damages and monetary fines;
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possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs;
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contractual damages;
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reputational harm;
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diminished potential profits and future earnings; and
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curtailment of our operations.

Our business could be negatively impacted by environmental, social and corporate governance, or ESG, matters or our reporting of such matters.

There is an increasing focus from certain investors, employees, partners, and other stakeholders concerning ESG matters. We may be, or be perceived to be, not acting responsibly in connection with these matters, which could negatively impact us. Moreover, the SEC has proposed, and may continue to propose, certain mandated ESG reporting requirements, such as the SEC’s final rules designed to enhance and standardize climate-related disclosures, which, if such climate-related disclosure rules ultimately go into effect, would significantly increase our compliance and reporting costs and may also result in disclosures that certain investors or other stakeholders deem to impact our reputation negatively and/or that harm our stock price. We currently do not report our environmental emissions and absent a legal requirement to do so we currently do not plan to report our environmental emissions, and lack of reporting could result in certain investors declining to invest in our common stock.

Furthermore, the criteria by which our ESG practices, including our initiatives and public goals, are assessed may change due to the evolution of the sustainability landscape, which could result in greater expectations of us and may cause us to undertake costly initiatives to satisfy new criteria. If we are unable to respond effectively to these changes to the sustainability landscape, governments, customers, and investors may conclude that our policies and/or actions with respect to ESG matters are inadequate. If we fail or are perceived to have failed to achieve previously announced public goals or to accurately disclose our progress on such goals or initiatives, our reputation, business, financial condition and results of operations could be adversely impacted.

Failure to achieve and maintain effective internal controls in accordance with Section 404 of the Sarbanes-Oxley Act of 2002 could have a material adverse effect on our business and stock price.

Section 404 of the Sarbanes-Oxley Act of 2002, or Section 404, requires that we establish and maintain an adequate internal control structure and procedures for financial reporting. Our Annual Reports on Form 10-K must contain an annual assessment by management of the effectiveness of our internal control over financial reporting and must include disclosure of any material weaknesses in internal control over financial reporting that we have identified. In addition, our independent registered public accounting firm must provide an opinion annually on the effectiveness of our internal control over financial reporting.

The requirements of Section 404 are ongoing and also apply to future years. We expect that our internal control over financial reporting will continue to evolve as our business develops, including in connection with our

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commercialization of RYTELO. Although we are committed to continue to improve our internal control processes and we will continue to diligently and vigorously review our internal control over financial reporting in order to ensure compliance with Section 404 requirements, any control system, regardless of how well designed, operated and evaluated, can provide only reasonable, not absolute, assurance that its objectives will be met. Moreover, in 2024 we implemented a new ERP and other information systems to help us manage our operations and financial reporting. However, there is an increased risk that changing controls may be ineffective in connection with the implementation of the new ERP and this ERP system may place additional burdens on employees to learn and adapt our processes to effectively operate under the ERP system. If the ERP system that we implemented in 2024 does not operate as intended, the effectiveness of our internal control over financial reporting could be negatively impacted. Therefore, we cannot assure you that material weaknesses or significant deficiencies will not exist or otherwise be discovered in the future, particularly in light of our increased reliance on personnel working remotely. If material weaknesses or other significant deficiencies occur, such weaknesses or deficiencies could result in misstatements of our results of operations, restatements of our financial statements, a decline in our stock price, or other material adverse effects on our business, reputation, results of operations, financial condition or liquidity.

Changes in tax laws or regulations that are applied adversely to us or our customers may have a material adverse effect on our business, cash flow, financial condition or results of operations.

New income, sales, use, excise or other tax laws, statutes, rules, regulations or ordinances could be enacted at any time, which could affect the tax treatment of our domestic and foreign sales and earnings. Any new taxes could adversely affect our domestic and international business operations and our business and financial condition. Further, existing tax laws, statutes, rules, regulations or ordinances could be interpreted, changed, modified or applied adversely to us. Future guidance from the U.S. Internal Revenue Service and other tax authorities with respect to such legislation may adversely affect us, and certain aspects of such legislation could be repealed or modified in the future, which could have an adverse effect on us. For example, the Inflation Reduction Act of 2022 included provisions that impacted the U.S. federal income taxation of corporations, including imposing a minimum tax on the book income of certain large corporations and an excise tax on certain corporate stock repurchases that is imposed on the corporation repurchasing such stock.

Changes in corporate tax rates, the realization of net deferred tax assets relating to our U.S. operations, the taxation of earnings from other countries, and the deductibility of expenses or future tax reform legislation could have a material impact on the value of our deferred tax assets, could result in significant one-time charges in the current or future taxable years, and could increase our future U.S. tax expense. For example, under the Tax Cuts and Jobs Act of 2017, effective January 1, 2022, research and experimental expenses must be capitalized for tax purposes and amortized over five years for research activities conducted in the United States and over fifteen years for research activities conducted outside the United States, instead of being deducted in the year incurred. Unless this provision is modified or repealed by Congress, or the U.S. Department of the Treasury issues regulations narrowing its application, our future tax obligations could be increased, which could harm our operating results. The impact of this provision will depend on multiple factors, including the amount of research and experimental expenses we incur, whether we achieve sufficient income to fully utilize such deductions and whether we conduct our research and experimental activities inside or outside the United States.

Our ability to use our net operating loss carryforwards and certain other tax attributes may be limited.

Our net operating loss carryforwards attributable to tax years beginning before January 1, 2018 could expire unused and be unavailable to offset future income tax liabilities. In addition, under current U.S. federal income tax law, federal net operating losses incurred in taxable years beginning after December 31, 2017, can be carried forward indefinitely, but the deductibility of such federal net operating losses in a taxable year is limited to 80% of taxable income in such year. Under Sections 382 and 383 of the Internal Revenue Code of 1986, as amended, and corresponding provisions of state law, if a corporation undergoes an “ownership change,” generally defined as a greater than 50 percentage point cumulative change (by value) in its equity ownership over a three-year period, the corporation’s ability to use its pre-change net operating loss carryforwards and other pre-change tax attributes (such as research and development tax credits) to offset its post-change taxable income or taxes may be limited. Changes in our stock ownership have occurred in the past, and future ownership changes, some of which may be outside our control, could occur in the future, as a result of shifts in our stock ownership. If a limitation were to apply, utilization of a portion of our domestic net operating loss and tax credit carryforwards could be limited in future periods, and a portion of the carryforwards may expire before being available to reduce future income tax liabilities, which could adversely impact our financial position. At the state level, there may be periods during which the use of net operating loss carryforwards is suspended or otherwise limited, which could accelerate or permanently increase state taxes owed. For example, in June 2024, California enacted legislation that, with certain exceptions, suspends the use of California net operating losses to offset California income and limits the use of California business tax credits to

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offset California taxes, for taxable years beginning after 2023 and before 2027. It is also uncertain if and to what extent various states will conform to current U.S. federal income tax law.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 1C. CYBERSECURITY

Risk management and strategy

We operate in the biopharmaceutical sector, which is a highly regulated sector subject to various cybersecurity risks that could adversely affect our business, financial condition, and results of operations, including intellectual property theft; fraud; extortion; harm to employees or customers; disruption of our clinical trials, manufacturing or supply chain; violation of privacy laws and other litigation and legal risk; and reputational risk. We rely primarily on industry-leading third parties and a cloud-based infrastructure for our information technology systems, and accordingly are dependent on these third parties’ own cybersecurity risk management practices and strategy. We have implemented and maintain various information security processes designed to identify, assess and manage material risks from cybersecurity threats to our critical computer networks, third party hosted services, communications systems, hardware and software, and our critical data, including clinical trial data, intellectual property, confidential information that is proprietary, strategic, financial or competitive in nature, and personal data (“Information Systems and Data”).

We take a risk-based approach to identify and assess the cybersecurity threats and risks that could affect our business and Information Systems and Data. Our Information Technology personnel help identify, assess and manage our cybersecurity threats and risks, and support our efforts to identify and assess risks from cybersecurity threats by monitoring and evaluating our threat environment. We use various methods and tools to identify, assess and manage cybersecurity threats and risks, including, for example, automated tools, industry reports, third party threat assessments and penetration testing. In addition, we encrypt data at rest and maintain network security controls, such as firewalls and virtual private networks. We also conduct computerized system monitoring and access control, including asset management, tracking and disposal associated with onboarding and offboarding of personnel. We maintain cybersecurity insurance.

Depending on the environment, we implement and maintain various technical, physical, and organizational measures, processes, standards and policies designed to manage and mitigate material risks from cybersecurity threats to our Information Systems and Data. For example, we have implemented and maintain an incident response plan, and we utilize automated tools designed to maintain email security. We have also implemented a computerized system security and password policy that defines security for access to computer systems managed and controlled by us, and a procedure for computerized system incident management to address any unplanned issues in regulated computerized systems that could impact subject safety, product quality, and data integrity. We periodically conduct cybersecurity incident tabletop training exercises involving our personnel and plan to conduct similar training in 2025.

Our assessment and management of material risks from cybersecurity threats are integrated into our overall risk management processes. For example, our head of Information Technology evaluates material risks from cybersecurity threats and reports periodically to the Audit Committee of our Board, which evaluates our overall enterprise risk. We use third-party service providers to assist us from time to time to identify, assess, and manage material risks from cybersecurity threats, including, for example, cybersecurity software providers such as Crowdstrike, cybersecurity service providers such as Mimecast, penetration testing firms, auditors, and professional services firms, including legal counsel. These relationships enable us to leverage specialized knowledge and insights, enabling our cybersecurity strategies and processes to remain consistent with industry best practices.

We rely on third-party service providers to perform a variety of functions throughout our business, such as contract manufacturing organizations, contract research organizations, suppliers and consultants, and third party logistics organizations and distributors to distribute RYTELO. We conduct quality audits of regulated vendors, which typically include an assessment of such vendor’s information technology systems, and we impose appropriate contractual obligations on vendors pertaining to information security. Depending on the nature of the services provided, the sensitivity of the Information Systems and Data at issue, and the identity of the provider, our efforts may involve different levels of assessment designed to help identify cybersecurity risks associated with a provider and impose contractual obligations related to cybersecurity on the provider.

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For a description of the risks from cybersecurity threats that may materially affect us and how they may do so, see our risk factors under Part 1. Item 1A. Risk Factors in this Report, including “Risks Related to Information Technology Systems, Data Security and Data Privacy.”

Governance

Our Board of Directors addresses our cybersecurity risk management as part of its general oversight function. The Audit Committee of our Board is responsible for overseeing our cybersecurity risk management processes, including oversight and mitigation of risks from cybersecurity threats.

Our Audit Committee, as well as our Chief Financial Officer, Chief Legal Officer, and other members of our executive management as appropriate, receives periodic reports from our head of Information Technology concerning our significant cybersecurity threats and risk and the processes we have implemented to address them. The Audit Committee also receives various periodic presentations related to cybersecurity threats, risk and mitigation.

Risk Management Personnel

Our Information Technology personnel responsible for cybersecurity risk assessment and management processes are managed by certain members of our executive management, including our Chief Financial Officer. Together with our executive management, our Information Technology personnel are responsible for hiring appropriate personnel, helping to integrate cybersecurity risk considerations into our overall risk management strategy, and communicating key priorities to relevant personnel. We seek to hire information technology personnel with skills appropriate to help us prepare for cybersecurity incidents, approve cybersecurity processes, and review security assessments and other security-related reports.

Our cybersecurity incident response plan is designed to escalate certain cybersecurity incidents to members of management depending on the circumstances, including executive management. When appropriate given the nature of any potential cybersecurity incident, our executive management works with our incident response team to help us mitigate and remediate cybersecurity incidents of which they are notified, and to make any legally required notifications to individuals or regulatory agencies, including making any required disclosures under the Exchange Act.

ITEM 2. PROPERTIES

In April 2019, we entered into an operating lease agreement for office space located at 3 Sylvan Way, Parsippany, New Jersey, or the New Jersey Lease. The initial term of the New Jersey Lease is 11 years with an option to extend for an additional five years and a one-time option to terminate the New Jersey Lease without cause as of the 103rd month anniversary of the commencement date of the lease. The New Jersey Lease commenced on October 1, 2019, upon our control of the office space on that date.

In October 2019, we entered into an operating lease agreement for office space located at 919 East Hillsdale Boulevard, Foster City, California, or the Foster City Lease. The initial term of the Foster City Lease is 87 months with an option to extend for an additional five years. The Foster City Lease commenced on March 10, 2020, upon our control of the office space on that date.

ITEM 3. LEGAL PROCEEDINGS

From time to time, we may be involved in legal proceedings relating to claims arising out of our operations. We are not currently involved in any material legal proceedings, and our management believes there are currently no claims or actions pending against us, the ultimate disposition of which could have a material adverse effect on our operations, financial condition, or cash flows. We may, however, be involved in material legal proceedings in the future. Such matters are subject to uncertainty and there can be no assurance that such legal proceedings will not have a material adverse effect on our business, results of operations, financial position or cash flows.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

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PART II

ITEM 5. MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

Our common stock is listed on the Nasdaq Global Select Market under the symbol GERN. As of February 21, 2025, there were approximately 439 stockholders of record of our common stock. This number does not include “street name” or beneficial holders, whose shares are held of record by banks, brokers and other financial institutions.

Stock Performance Graph

The following graph shows a comparison from December 31, 2019 through December 31, 2024, of the cumulative total return on an assumed investment of $100.00 in our common stock as compared to the same investment in the Nasdaq Composite Index and the Nasdaq Biotechnology Index. Such returns are based on historical results and are not intended to suggest future performance. Data for the Nasdaq Composite Index and Nasdaq Biotechnology Index assume reinvestment of dividends.

This performance graph shall not be deemed “soliciting material” or to be “filed” with the SEC for purposes of Section 18 of the Exchange Act or incorporated by reference into any filing of Geron Corporation under the Securities Act or the Exchange Act, except to the extent we specifically incorporate it by reference into such filing.

Dividend Policy

We have never paid cash dividends on our capital stock and do not anticipate paying cash dividends in the foreseeable future, but intend to retain our capital resources for reinvestment in our business. In addition, the terms of our Pharmakon Loan Agreement restrict our ability to pay dividends and any future debt agreements may continue to or further restrict our ability to pay dividends. Any future determination to pay cash dividends will be at the discretion of the board of directors and will be dependent upon our financial condition, results of operations, capital requirements, compliance with the terms of our Pharmakon Loan Agreement or other future debt agreements, and other factors our board of directors deems relevant.

Recent Sales of Unregistered Securities

During the year ended December 31, 2024, there were no unregistered sales of equity securities by us.

ITEM 6. [RESERVED]

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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion should be read in conjunction with the section entitled “Business” in Part I, Item 1 and the audited financial statements and notes thereto included in Part II, Item 8 of this Report. The information provided should be reviewed in the context of the sections entitled “Risks Related to the Further Development of RYTELO (Imetelstat),” “Risks Related to the Commercialization of RYTELO” and “Risks Related to Regulatory Approval of RYTELO” in Part II, Item 1A entitled “Risk Factors” and elsewhere in this Report.

Company Overview

Summary

We are a commercial-stage biopharmaceutical company aiming to change lives by changing the course of blood cancer. Our first-in-class telomerase inhibitor, RYTELO® (imetelstat), harnesses Nobel Prize winning science in a treatment that scientific evidence suggests reduces proliferation of malignant cells, allowing production of new healthy cells, which we believe drives differentiated clinical benefits, potentially altering the underlying course and modifying the disease of these hematologic malignancies.

We commercially launched RYTELO in the U.S. in June 2024 following its approval by the U.S. Food and Drug Administration, or FDA on June 6, 2024 for the treatment of adult patients with low- to intermediate-1 risk myelodysplastic syndromes, or lower-risk MDS, with transfusion-dependent, or TD, anemia requiring four or more red blood cell units over eight weeks who have not responded to or have lost response to or are ineligible for erythropoiesis-stimulating agents, or ESAs. Lower-risk MDS is a progressive blood cancer with high unmet need, where many patients with anemia become dependent on red blood cell transfusions, which can be associated with clinical consequences and decreased quality of life. We believe that the uptake of RYTELO since launch is supported by the high unmet need in lower-risk MDS and significant product differentiation, including observed benefit of RYTELO in difficult-to-treat sub-populations such as patients with high transfusion burden and ring sideroblast negative, or RS- patients. We believe that the favorable FDA label and the National Comprehensive Cancer Network, or NCCN®, Clinical Practice Guidelines in Oncology, or NCCN Guidelines®, position RYTELO as a potential blockbuster treatment that can compete for significant market segments in lower-risk MDS, including first-line ESA ineligible patients and second-line patients regardless of prior treatment or RS status.

In September 2023, we submitted a marketing authorization application, or MAA, in the European Union, or EU, that was validated for review by the European Medicines Agency, or EMA, for RYTELO for the same proposed indication as in the U.S., and in December 2024, the Committee for Medicinal Products for Human Use, or CHMP, of the EMA adopted a positive opinion recommending the approval of RYTELO for the treatment of adult patients with TD anemia due to very low, low or intermediate risk myelodysplastic syndromes without an isolated deletion 5q cytogenetic, or non-del 5q, abnormality and who had an unsatisfactory response to or are ineligible for erythropoietin-based therapy. The European Commission, or EC, is reviewing the CHMP's recommendation, and we expect a potential approval decision by the EC in the first half of 2025. We are preparing for the potential commercialization of RYTELO in select EU countries in 2026, subject to regulatory approval, which could include working with experienced third parties who can provide contracted services, including essential critical path activities such as reimbursement, Health Technology Assessment, or HTA, submissions, market access and distribution.

In addition to lower-risk MDS, we are developing imetelstat for the treatment of other myeloid hematologic malignancies. Our Phase 3 IMpactMF clinical trial is evaluating imetelstat in patients with intermediate-2 or high-risk myelofibrosis, or MF, who have relapsed after or are refractory to treatment with a janus associate kinase inhibitor, or JAK inhibitor, or relapsed/refractory MF, or R/R MF, with overall survival, or OS, as the primary endpoint. As of February 2025, the trial reached approximately 80% enrollment. Based on our current planning assumptions for enrollment and event (death) rates in the trial, we expect the interim analysis for OS in IMpactMF may occur in the second half of 2026 and the final analysis may occur in the second half of 2028.

We believe that telomerase inhibition with imetelstat represents a novel mechanism of action with unique benefits in hematologic malignancies and potentially in other tumor types.

Financial Overview

Since our inception, we have financed our operations primarily through the sale of equity securities, draw downs on our debt facilities, interest income on our marketable securities and payments we received under the

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Royalty Pharma Agreement and our prior collaborative and licensing arrangements. As of December 31, 2024, we had approximately $502.9 million in cash, cash equivalents, restricted cash and marketable securities.

On March 21, 2024, we completed an underwritten offering of 41,999,998 shares of our common stock and a pre-funded warrant to purchase 8,002,668 shares of our common stock, or the 2024 pre-funded warrant. All of the securities were issued separately. The offering price of the common stock was $3.00 per share. The offering price of the 2024 pre-funded warrant was $2.99 per share. The 2024 pre-funded warrant has an exercise price of $0.001 per share and may be exercised at any time until it is exercised in full. As of December 31, 2024, the 2024 pre-funded warrant had not been exercised. The net cash proceeds from the March 2024 public offering were approximately $141.0 million, after deducting the underwriting discount and other offering expenses paid by us.

We began commercializing RYTELO in June 2024, and the commercial potential of and our ability to successfully commercialize RYTELO is unproven. Our success in commercializing RYTELO will require, among other things, effective sales, marketing, manufacturing, distribution, information systems and pricing strategies, as well as compliance with applicable laws and regulations. In addition, although we recently began commercializing RYTELO, substantially all of our revenues to date have been payments under prior collaboration agreements, and milestones, royalties and other revenues from our licensing arrangements. We reported a small profit for the year ended December 31, 2015, and we have not reported any profit since. We have incurred significant net losses since our inception in 1990, resulting principally from costs incurred in connection with our research and development activities and from general and administrative costs associated with our operations. As of December 31, 2024, we had an accumulated deficit of approximately $1.8 billion.

On November 1, 2024, we entered into a loan agreement, or the Pharmakon Loan Agreement, with BioPharma Credit Investments V (Master) LP and BPCR Limited Partnership, each, a Lender, which are investment funds managed by Pharmakon Advisors, LP, and BioPharma Credit PLC, as collateral agent, that provides for a 5-year senior secured term loan facility of up to $250.0 million, divided into three committed tranches: (i) a Tranche A Loan in an aggregate principal amount of $125.0 million, or the Tranche A Loan, which was funded on November 1, 2024, or the Tranche A Closing Date; (ii) a Tranche B Loan in an aggregate principal amount of $75.0 million, or the Tranche B Loan, which is available, subject to certain limited conditions, at our option; and (iii) a Tranche C Loan in an aggregate principal amount of $50.0 million, or the Tranche C Loan, and together with the Tranche A Loan and the Tranche B Loan, collectively, the Term Loans, which is available to us upon reaching a specified trailing twelve-month RYTELO revenue milestone. The Tranche B Loan and the Tranche C Loan, once available, may be requested on or prior to December 31, 2025. A portion of the proceeds from the Tranche A Loan were used to repay, in full, all amounts owed ($86.5 million) under the Hercules Loan Agreement, which was terminated effective November 1, 2024. The Term Loans mature on November 1, 2029. The Term Loans bear interest at a variable rate per annum equal to 5.75% plus the three-month Secured Overnight Financing Rate, or SOFR, with a SOFR floor of 3.00%.

On November 1, 2024, we entered into a revenue participation right purchase and sale agreement, or the Royalty Pharma Agreement, with Royalty Pharma Development Funding, LLC, or Royalty Pharma. Pursuant to the Royalty Pharma Agreement, we received an upfront payment of $125.0 million, or the Purchase Price, in exchange for which Royalty Pharma obtained the right to receive tiered royalty payments with respect to annual U.S. net sales, or Annual Net Sales, of RYTELO beginning on July 1, 2024, ranging from: (i) 7.75% of Annual Net Sales up to $500.0 million; (ii) 3.0% of Annual Net Sales in excess of $500.0 million but less than or equal to $1.0 billion; and (iii) 1.0% in respect of Annual Net Sales in excess of $1.0 billion, or the Royalty Payments. The Royalty Payments to Royalty Pharma are capped, such that they will cease upon reaching a multiple of 1.65 times the Purchase Price if Royalty Pharma receives Royalty Payments in that amount in respect of net sales occurring on or before June 30, 2031, or upon reaching a multiple of 2.0 times the Purchase Price thereafter. Our Royalty Payment obligations under the Royalty Pharma Agreement may be discharged in connection with a change of control of Geron in an amount equal to 1.65 times the Purchase Price minus the aggregate Royalty Payments received by Royalty Pharma as of the date of the closing of the change of control, if the closing of the change of control occurs on or prior to December 31, 2027, or in an amount equal to 2.0 times the Purchase Price minus the aggregate Royalty Payments received by Royalty Pharma as of the date of the closing of the change of control, if the closing of the change of control occurs after December 31, 2027. There are no other royalties payable on RYTELO, which was developed internally and is exclusively owned by Geron.

The significance of future losses, future revenues and any potential future profitability will depend primarily on the clinical and commercial success of RYTELO, our sole product. In addition, we are developing RYTELO for the treatment of several myeloid hematologic malignancies that will continue to require additional time and significant investment in clinical trials to complete. We also expect to continue to seek regulatory approvals of RYTELO in jurisdictions outside of the United States, such as our MAA submission for RYTELO in the EU. As a result, we expect research and development expenses and selling, general and administrative expenses to increase in

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future periods as we continue to support the commercialization of RYTELO in the U.S. and further development of RYTELO, including the conduct and completion of IMpactMF, IMproveMF and IMpress, as well as the potential commercialization of RYTELO in the EU, if approved, in lower-risk MDS. In addition, we expect our interest expense to increase due to the draw down of the Tranche A Loan and potential future draw downs of the other Term Loans under the Pharmakon Loan Agreement, if available, as well as the non-cash interest expense related to the Royalty Pharma Agreement.

Critical Accounting Policies and Estimates

Our consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of our consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses. Our estimates are based on our historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions and conditions.

A critical accounting policy is one that is both important to the portrayal of our financial condition and results of operations and requires management’s most difficult, subjective or complex judgments, often as a result of the need to make estimates about the effect of matters that are inherently uncertain. While Note 1 of Notes to Consolidated Financial Statements of this Report describes the significant accounting policies used in the preparation of our consolidated financial statements, we believe the following accounting estimates and policies to be critical.

Clinical Trial Accruals

Our current imetelstat clinical trials are being supported by CROs and other vendors. Invoicing from CROs for services rendered can be delayed. We accrue the cost of services rendered in connection with CRO activities, which include, management, monitoring costs, project management costs, and investigator fees. We accrue expenses for clinical trial activities performed by CROs based upon the amount of work completed on each trial. We maintain regular communications with our CROs to assess the reasonableness of our accrual. To date, differences between actual clinical trial expenses and accrued clinical trial expenses recorded have not been material and are adjusted for in the period in which they become known. However, if we incorrectly accrue activity levels associated with the CRO services at a given point in time, we could be required to record material adjustments in future periods.

Revenue Recognition

Revenues are recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services.

Product Sales, Net

Product sales revenue is recognized when control has transferred to the customer, which occurs at a point in time, which is typically on delivery to the customer or, in the case of products that are subject to consignment agreements, when the customer removes product from our consigned inventory location for shipment directly to a patient.

Items Deducted from Gross Product Sales

Revenues from sales of products are recorded net of government rebates and rebates under managed care plans and commercial payor contracts, estimated allowances for sales returns, government chargebacks, prompt payment discounts, patient coupon programs, and specialty distributor and wholesaler fees. Calculating certain of these items involves estimates and judgments based on sales or invoice data, contractual terms, historical utilization rates, new information regarding changes in applicable regulations and guidelines that would impact the amount of the actual rebates, our expectations regarding future utilization rates and channel inventory data. We review the adequacy of our provisions for sales deductions on a quarterly basis. Amounts accrued for sales deductions are adjusted when trends or significant events indicate that adjustment is appropriate and to reflect actual experience. The most significant items deducted from gross product sales where we exercise judgment are rebates, sales returns and chargebacks. Actual results may differ from these estimates under different assumptions and conditions. We estimate these potential price adjustments (chargebacks and co-payment assistance) as a reduction (i.e., constraint) to transaction price and recognize a corresponding reserve liability. Variable consideration will be re-evaluated at

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least on a quarterly basis, and we will continue to re-evaluate variable consideration on an ongoing basis. The amount of variable consideration can vary from period to period because of fluctuations in discounts, rebates, refunds, credits, price concessions, incentives, performance bonuses, penalties, or other similar items.

Interest Expense

The liability related to the Royalty Payments under the Royalty Pharma Agreement and the related revenue interest expense are measured based on our current estimate of the timing and amount of expected future Royalty Payments expected to be paid over the estimated term of the Royalty Pharma Agreement using a discounted cash flow model. The liability is amortized using the effective interest rate method, resulting in recognition of non-cash interest expense over the estimated term of the agreement. Each reporting period, we assess the estimated timing and amount of future expected Royalty Payments over the estimated term. If there are changes to the estimate, we recognize the impact to the liability’s amortization schedule and the related non-cash interest expense prospectively. Additionally, the transaction costs associated with the liability will be amortized to non-cash interest expense over the estimated term of the Royalty Pharma Agreement.

Results of Operations

Our results of operations have fluctuated from period to period and may continue to fluctuate in the future. Results of operations for any period may be unrelated to results of operations for any other period. Thus, historical results should not be viewed as indicative of future operating results. In this regard, although we have begun to recognize revenue from RYTELO product sales in the U.S., we are early in the product launch. We expect that our sales revenue may vary significantly from period to period as the launch progresses.

RYTELO is our only product approved for marketing and is approved solely in the U.S. for certain patients with lower-risk MDS. Revenue based on sales of RYTELO is dependent on our ability to successfully commercialize RYTELO in the U.S. and to obtain regulatory approvals to commercialize RYTELO in other jurisdictions and in other indications. We are subject to risks common to companies in our industry and at our stage of development, including, but not limited to, risks inherent in research and development efforts, including the development, manufacture, regulatory approval for and commercialization of RYTELO; uncertainty of non-clinical and clinical trial results or regulatory approvals or clearances; the future development of imetelstat by us and its use by patients generally, including any future efficacy or safety results from clinical or commercial use that may cause the benefit-risk profile of imetelstat to become unacceptable; the uncertain and unpredictable drug research and discovery process; overcoming disruptions and/or delays due to macroeconomic or other global conditions, such as inflation, rising interest rates, prospects of a recession, government shutdowns, further changes in tariffs and other trade restrictions, bank failures and other disruptions to financial systems, civil or political unrest, military conflicts, pandemics or other health crises and supply chain and resource issues; our need for substantial additional capital; enforcement of our patent and proprietary rights; reliance upon our CROs, contract manufacturing organizations, or CMOs, consultants, licensees, investigators and other third parties; and potential competition.

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Comparison of the Years Ended December 31, 2024, 2023, and 2022

The following table sets forth our results of operations for the years ended December 31:

|  | 2024 |  |  | 2023 |  |  | Change $ |  |  | Change % |  |  | 2022 |  |  | Change $ |  |  | Change % |
|  | (in thousands, except for percentage data) |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product revenues, net |  | $ | 76,495 |  |  | $ | — |  |  | $ | 76,495 |  |  |  | 100 | % |  | $ | — |  |  | $ | — |  |  | ** |
Royalties |  |  | 499 |  |  |  | 237 |  |  |  | 262 |  |  |  | 111 | % |  |  | 596 |  |  |  | (359 | ) |  |  | (60 | %)
Total revenues |  |  | 76,994 |  |  |  | 237 |  |  |  | 76,757 |  |  | ** |  |  |  | 596 |  |  |  | (359 | ) |  | ** |
Operating expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of goods sold |  |  | 1,256 |  |  |  | — |  |  |  | 1,256 |  |  |  | 100 | % |  |  | — |  |  |  | — |  |  | ** |
Research and development |  |  | 103,738 |  |  |  | 125,046 |  |  |  | (21,308 | ) |  |  | (17 | %) |  |  | 95,518 |  |  |  | 29,528 |  |  |  | 31 | %
Selling, general and administrative expenses |  |  | 145,732 |  |  |  | 69,135 |  |  |  | 76,597 |  |  |  | 111 | % |  |  | 43,628 |  |  |  | 25,507 |  |  |  | 58 | %
Total operating expenses |  |  | 250,726 |  |  |  | 194,181 |  |  |  | 56,545 |  |  |  | 29 | % |  |  | 139,146 |  |  |  | 55,035 |  |  |  | 40 | %
Interest income |  |  | 19,607 |  |  |  | 18,152 |  |  |  | 1,455 |  |  |  | 8 | % |  |  | 2,529 |  |  |  | 15,623 |  |  |  | 618 | %
Interest expense |  |  | (18,504 | ) |  |  | (8,312 | ) |  |  | (10,192 | ) |  |  | 123 | % |  |  | (6,882 | ) |  |  | (1,430 | ) |  |  | 21 | %
Other income and (expense), net |  |  | (236 | ) |  |  | (23 | ) |  |  | (213 | ) |  | ** |  |  |  | 1,002 |  |  |  | (1,025 | ) |  |  | (102 | %)
Loss on extinguishment of debt |  |  | (1,707 | ) |  |  | — |  |  |  | (1,707 | ) |  |  | 100 | % |  |  | — |  |  |  | — |  |  | ** |
Net income (loss) |  | $ | (174,572 | ) |  | $ | (184,127 | ) |  | $ | 9,555 |  |  |  | (5 | %) |  | $ | (141,901 | ) |  | $ | (42,226 | ) |  |  | 30 | %

** Not meaningful

Revenues

Product Revenues, net

On June 6, 2024, the FDA approved RYTELO for the treatment of adult patients with low- to intermediate-1 risk myelodysplastic syndromes, or lower-risk MDS, with transfusion-dependent, or TD, anemia requiring four or more red blood cell units over eight weeks who have not responded to or have lost response to or are ineligible for erythropoiesis-stimulating agents, or ESA. To date, our only source of product revenue has been from the U.S. sales of RYTELO, which we began shipping to our customers in June 2024. We did not generate any revenue from product sales prior to June 2024. Total product revenue, net for the twelve months ended December 31, 2024 was approximately $76.5 million. We expect product revenues, net to increase in 2025.

To date, our only source of product revenue has been from the U.S. sales of RYTELO, which we began shipping to our customers in June 2024. Total gross-to-net adjustments for the twelve months ended December 31, 2024 was 14.4% of gross product revenue. The reconciliation of gross product sales to net product sales by each significant category of gross-to-net adjustments was as set forth below for the twelve months ended December 31, 2024. We expect gross-to-net adjustments to be in the range of mid- to high-teen percentages of gross product revenue in 2025.

| Twelve Months Ended |
| December 31, 2024 |
(in thousands) |
Gross product revenue | $ | 89,418 |
Gross-to-net adjustments: |  |
Chargebacks and distributor service fees |  | (11,772 | )
Government rebates |  | (926 | )
Sales returns and allowances |  | (225 | )
Total gross-to-net adjustments | $ | (12,923 | )
Net product revenue | $ | 76,495 |

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Royalties

In connection with the divestiture of our human embryonic stem cell assets, including intellectual property and proprietary technology, to Lineage Cell Therapeutics, Inc. (formerly BioTime, Inc. which acquired Asterias Biotherapeutics, Inc.), or Lineage, in 2013, we are entitled to receive royalties on sales from certain research or commercial products utilizing our divested intellectual property.

We recognized royalty revenues of $499,000, $237,000 and $596,000 during the years ended December 31, 2024, 2023 and 2022, respectively. Royalty revenues reflect estimated royalties from sales of cell-based research products from our divested stem cell assets.

Future license fee and royalty revenues are dependent on additional agreements being signed, if any, our current license agreement with Lineage being maintained, and the underlying patent rights for the license remaining active. We expect royalty revenues in 2025 to be lower than 2024 as a result of reduced royalties from sales of cell-based research products from our divested stem cell assets.

Operating Expenses

The following table summarizes our operating expenses, including as a percentage of expenses, for the years ended December 31:

(In thousands) |  | 2024 |  |  | 2023 |  |  | Change $ |  |  | Change % |  |  | 2022 |  |  | Change $ |  |  | Change % |
Cost of goods sold |  | $ | 1,256 |  |  | $ | — |  |  | $ | 1,256 |  |  |  | 100 | % |  | $ | — |  |  | $ | — |  |  | ** |
Research and development |  |  | 103,738 |  |  |  | 125,046 |  |  |  | (21,308 | ) |  |  | (17 | %) |  |  | 95,518 |  |  |  | 29,528 |  |  |  | 31 | %
Selling, general and administrative |  |  | 145,732 |  |  |  | 69,135 |  |  |  | 76,597 |  |  |  | 111 | % |  |  | 43,628 |  |  |  | 25,507 |  |  |  | 58 | %
Total operating cost and expenses |  | $ | 250,726 |  |  | $ | 194,181 |  |  | $ | 56,545 |  |  |  | 23 | % |  | $ | 139,146 |  |  | $ | 55,035 |  |  |  | 40 | %

** Not meaningful

Cost of Goods Sold

Cost of goods sold was approximately $1.3 million for the year ended December 31, 2024, respectively, which consisted of costs to manufacture and distribute our marketed product, RYTELO. We began capitalizing inventory upon FDA approval of RYTELO. All product costs incurred prior to FDA approval of RYTELO in June 2024 were expensed as research and development expenses. As a result, the manufacturing costs related to the inventory manufactured prior to receiving FDA approval were expensed in a prior period and are therefore excluded from the cost of goods sold for the year ended December 31, 2024. We estimate our cost of sales related to product revenue as a percentage of net product revenue will continue to be positively affected for the next 18 to 24 months as we sell through certain inventory that was previously expensed prior to FDA approval.

Our cost of goods sold consist of raw materials, third-party manufacturing costs to manufacture the raw materials into finished product, freight, and indirect overhead costs associated with the sale of RYTELO in the U.S.

Research and Development Expenses

During the year ended December 31, 2024, our RYTELO (imetelstat) program and our research discovery program related to potential next generation telomerase inhibitors were the only research and development programs we supported. For these research and development programs, we incur direct external, personnel-related and other research and development costs. For the years ended December 31, 2024, 2023 and 2022, research and development expenses consist of expenses incurred in developing and testing imetelstat and research related to potential next generation telomerase inhibitors. These expenses include, but are not limited to, payroll and personnel expense, lab supplies, non-clinical studies, clinical trials, including support for investigator-led clinical trials, raw materials to manufacture clinical trial supply, manufacturing costs for research and clinical trial materials, sponsored research at other labs, consulting, costs to maintain technology licenses and research-related overhead.

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Research and development expenses for the years ended December 31, 2024, 2023 and 2022 were as follows:

|  | Year Ended December 31, |
(In thousands) |  | 2024 |  |  | 2023 |  |  | 2022 |
Direct external research and development expenses: |  |  |  |  |  |  |  |  |
Clinical program: Imetelstat |  | $ | 68,424 |  |  | $ | 86,914 |  |  | $ | 65,699 |
Personnel related expenses |  |  | 33,411 |  |  |  | 31,595 |  |  |  | 24,042 |
All other research and development expenses |  |  | 1,903 |  |  |  | 6,537 |  |  |  | 5,777 |
Total |  | $ | 103,738 |  |  | $ | 125,046 |  |  | $ | 95,518 |

The decrease in research and development expenses in 2024 as compared to 2023, was primarily due to manufacturing and quality costs that were capitalized in the current period, beginning with the third quarter of 2024, due to FDA approval of RYTELO in June 2024, versus being expensed in 2023. The decrease is partially offset by an increase in labor costs due to higher headcount and incentive and stock-based compensation expense recognized due to the vesting of performance-based stock options upon FDA approval. We expect research and development expenses to increase in the future as we support IMpactMF, IMproveMF and IMpress, and continue the long-term treatment and follow-up of remaining patients in IMerge Phase 3.

The increase in research and development expenses in 2023 as compared to 2022 primarily reflects the net result of increased personnel-related expenses for additional headcount and higher consulting costs related to compilation and analysis of data for top-line results and preparations for regulatory submissions in lower-risk MDS, partially offset by decreased manufacturing costs due to the timing of imetelstat manufacturing batches and reduced clinical trial expenses due to declining number of patients in IMerge Phase 3.

A discussion of the risks and uncertainties associated with the development of imetelstat can be found in the sub‑sections entitled “Risks Related to the Further Development of RYTELO (Imetelstat),” “Risks Related to the Commercialization of RYTELO” and “Risks Related to Regulatory Approval of RYTELO” in Part II, Item 1A entitled “Risk Factors” and elsewhere in this Report. As a result of these risks and uncertainties, we are unable to determine with any degree of certainty the duration and completion costs of ongoing and potential future imetelstat research and development projects, anticipated completion dates, or when and to what extent we will receive cash inflows from the commercialization and sale of RYTELO in any other jurisdictions or indications we are pursuing or may in the future pursue, if at all.

Selling, General and Administrative Expenses

Selling, general and administrative expenses were $145.7 million, $69.1 million, and $43.6 million for the years ended December 31, 2024, 2023 and 2022, respectively.

The increase in selling, general and administrative expenses in 2024 as compared to 2023 primarily reflects the net result of higher personnel-related expenses of approximately $40.0 million related to increased headcount to support commercial launch of RYTELO in the U.S. and stock-based compensation recognized upon FDA approval of RYTELO due to the vesting of performance-based stock options, as well as increased costs for commercial preparatory activities and launch support of approximately $33.0 million.

The increase in selling, general and administrative expenses in 2023 as compared to 2022 primarily reflects the net result of higher personnel-related expenses of approximately $19.0 million for additional headcount and expenses related to commercial launch readiness, as well as increased costs for commercial preparatory activities of approximately $9.7 million; partially offset by lower legal expenses in 2023 primarily related to $7.0 million that was recorded in the third quarter of 2022 for our portion of the settlement in connection with a class action lawsuit. We expect selling, general and administrative expenses to increase in 2025 as our commercialization activities continue.

Interest Income

Interest income was $19.6 million, $18.2 million, and $2.5 million for the years ended December 31, 2024, 2023 and 2022, respectively.

The increase in interest income in 2024 compared to 2023 primarily reflects a larger marketable securities portfolio due to the receipt of net cash proceeds from the underwritten offering completed in March 2024, as well as

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higher yields from marketable securities purchases. Interest earned in future periods will depend on the size of our marketable securities portfolio and prevailing interest rates.

The increase in interest income in 2023 compared to 2022 primarily reflects a larger marketable securities portfolio, with the receipt of net cash proceeds from the underwritten public offering completed in January 2023 and cash proceeds from warrant exercises in 2023, as well as higher yields from marketable securities purchases. Interest earned in future periods will depend on the size of our marketable securities portfolio and prevailing interest rates.

Interest Expense

Interest expense was $18.5 million, $8.3 million, and $6.9 million for the years ended December 31, 2024, 2023 and 2022, respectively.

The increase in interest expense in 2024 as compared to 2023 primarily reflects $5.3 million in non-cash interest expense related to the Royalty Pharma Agreement, $2.3 million in Pharmakon Loan Agreement and $2.6 million increase related to the Hercules agreement in comparison to the prior year.

The increase in interest expense in 2023 compared to 2022 primarily reflects rising interest rates and an increased principal debt balance under the Pharmakon Loan and the Royalty Pharma agreements. Interest expense reflects interest owed under the Loan Agreement, interest expense recognized under the Royalty Pharma Agreement, as well as amortization of associated debt issuance costs and debt discounts using the effective interest method and accrual for an end of term charge.

On November 1, 2024, we entered into the Pharmakon Loan Agreement, and in connection with this transaction, all obligations outstanding under the Hercules Loan Agreement were repaid in full on November 1, 2024, upon which the Hercules Loan Agreement was terminated. We expect our interest expense to increase in future periods due to the draw down of the Tranche A Loan and potential future draw downs of the other Term Loans under the Pharmakon Loan Agreement. See Note 9 on Debt in Notes to Consolidated Financial Statements of this Report for additional information.

We accounted for the Royalty Pharma Agreement as a liability financing, primarily because it has significant continuing involvement in generating the future revenue on which the Royalty Payments are based. The liability related to Revenue Participation Right and the related non-cash interest expense are measured based on our current estimate of the timing and amount of expected future Royalty Payments expected to be paid over the estimated term of the Royalty Pharma Agreement using a discounted cash flow model. The liability is amortized using the effective interest rate method, resulting in recognition of non-cash interest expense over the estimated term of the agreement. Each reporting period, we assess the estimated timing and amount of future expected Royalty Payments over the estimated term. If there are changes to the estimate, we recognize the impact to the liability’s amortization schedule and the related non-cash interest expense prospectively. Additionally, the transaction costs associated with the liability will be amortized to non-cash interest expense over the estimated term of the Royalty Pharma Agreement. See Note 9 on Debt in Notes to Consolidated Financial Statements of this Report for additional information.

Other (Loss) Income, Net

Other (loss) income, net was a loss of $236,000 for the year ended December 31, 2024, and loss of $23,000 and income of $1.0 million for the years ended December 31, 2023 and 2022, respectively. Net other (loss) income and expense primarily reflects bank charges related to our cash operating accounts and marketable securities portfolio, foreign currency transaction adjustments.

In the second quarter of 2022, we recognized other income of approximately $1.3 million related to the reimbursement of certain legal expenses under our insurance policies. See Note 4 on Fair Value Measurements – Equity Investment in Notes to Consolidated Financial Statements of this Report for additional information about the sales of our equity investment. Net other income also includes bank charges related to our cash operating accounts and marketable securities portfolio.

Gain (Loss) on extinguishment of debt

We recorded a loss on the extinguishment of debt of $1.7 million for the twelve months ended December 31, 2024. This loss is related to the settlement of debt outstanding under the Hercules Loan Agreement. See Note 9 on Debt in Notes to Consolidated Financial Statements of this Report for additional information.

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Liquidity and Capital Resources

As of December 31, 2024, we had cash, restricted cash, cash equivalents and marketable securities of $502.9 million, compared to $378.1 million at December 31, 2023. The increase in cash, restricted cash, cash equivalents, and current and noncurrent marketable securities from December 31, 2024 was primarily the result of the receipt of net cash proceeds of $141.0 million from our underwritten public offering in March 2024, after deducting the underwriting discount and other offering expenses paid by us, and $246.1 million net cash proceeds received under the Pharmakon Loan Agreement and Royalty Pharma Agreement in November 2024.

On March 21, 2024, we completed an underwritten public offering consisting of 41,999,998 shares of our common stock and a pre-funded warrant to purchase 8,002,668 shares of our common stock. All of the securities were issued separately. The offering price of the common stock was $3.00 per share. The offering price of the 2024 pre-funded warrant was $2.99 per share. The 2024 pre-funded warrant has an exercise price of $0.001 per share and may be exercised at any time until it is exercised in full. As of December 31, 2024, the 2024 pre-funded warrant had not been exercised. The net cash proceeds from this offering were approximately $141.0 million, after deducting the underwriting discount and other offering expenses paid by us, and excluding any future proceeds from the exercise of the 2024 pre-funded warrant. See Note 10 on Stockholders’ Equity in Notes to Condensed Consolidated Financial Statements of this Report for additional information about the underwritten offering completed in March 2024.

On November 1, 2024, we entered into the Pharmakon Loan Agreement. We drew the Tranche A Loan of $125.0 million on November 1, 2024, a portion of which was utilized to repay all outstanding indebtedness associated with the Hercules Loan Agreement. The Pharmakon Loan Agreement provides two additional committed term loan tranches, the Tranche B Loan and the Tranche C Loan, in principal amounts of $75.0 million and $50.0 million, respectively, subject to customary conditions to fund and, in the case of the Tranche C Loan, achieving certain minimum net sales milestone. The Tranche B Loan and the Tranche C Loan may be requested on or prior to December 31, 2025. The Term Loans mature on November 1, 2029. The Term Loans bear interest at a variable rate per annum equal to 5.75% plus three-month SOFR with a SOFR floor of 3.00%. See Note 9 on Debt in Notes to Consolidated Financial Statements of this Report for additional information on the Pharmakon Loan Agreement.

On November 1, 2024, we entered into the Royalty Pharma Agreement with Royalty Pharma. Pursuant to the Royalty Pharma Agreement, we received $125.0 million, or the Purchase Price, in exchange for which Royalty Pharma obtained the right to receive the Royalty Payments. The Royalty Payments to Royalty Pharma are capped, such that they will cease upon reaching a multiple of 1.65 times the Purchase Price if Royalty Pharma receives Royalty Payments in that amount in respect of net sales occurring on or before June 30, 2031, or upon reaching a multiple of 2.0 times the Purchase Price thereafter. There are no other royalties payable on RYTELO, which was developed internally and is exclusively owned by Geron. See Note 9 on Debt in Notes to Consolidated Financial Statements of this Report for additional information on the Royalty Pharma Agreement.

In 2024, warrants to purchase 1,071,981 shares of our common stock were exercised for net cash proceeds of approximately $1.4 million. The warrants were issued in connection with underwritten public offerings of our common stock in 2020 and 2022.

On January 10, 2023, we completed an underwritten public offering of 68,007,741 shares of our common stock and a pre-funded warrant to purchase 25,000,000 shares of our common stock, or the 2023 pre-funded warrant. The net cash proceeds from this offering were approximately $213.3 million, after deducting the underwriting discount and other offering expenses paid by us.

On November 1, 2023, we entered into an At Market Issuance Sales Agreement, or the 2023 Sales Agreement, with B. Riley Securities, pursuant to which we may elect to issue and sell shares of our common stock having an aggregate offering price of up to $100.0 million in such quantities and on such minimum price terms as we set from time to time through B. Riley Securities as our sales agent. We have agreed to pay B. Riley Securities an aggregate commission equal to up to 3.0% of the gross proceeds of the sales under the agreement. To date, no sales of common stock have occurred under the 2023 Sales Agreement.

We have an investment policy to invest our cash in liquid, investment-grade securities, such as interest-bearing money market funds, certificates of deposit, U.S. Treasury securities, municipal securities, government and agency securities, corporate notes and commercial paper. Our investment portfolio does not contain securities with exposure to sub-prime mortgages, collateralized debt obligations, asset-backed securities or auction rate securities and, to date, we have not recognized any other-than-temporary impairment charges on our marketable securities or any significant changes in aggregate fair value that would impact our cash resources or liquidity. To date, we have not experienced lack of access to our invested cash and cash equivalents; however, access to our invested cash and cash equivalents may be impacted by adverse conditions in the financial and credit markets.

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Financing Strategy

We may, from time to time, consider additional funding through a combination of new collaborative arrangements, strategic alliances, and additional equity and debt financings or from other sources. We will continue to manage our capital structure and consider all financing opportunities, whenever they may occur, that could strengthen our long-term liquidity profile. Any such capital transactions may or may not be similar to transactions in which we have engaged in the past. There can be no assurance that any such financing opportunities will be available on acceptable terms, if at all.

Future Funding Requirements

Successful drug development and commercialization requires significant amounts of capital. As of December 31, 2024, we had approximately $502.9 million in cash, cash equivalents, restricted cash and marketable securities. Based on our current operating plans and assumptions, we believe that our existing cash, cash equivalents, and marketable securities, together with anticipated net revenues from U.S. sales of RYTELO, will be sufficient to fund our projected operating requirements for the foreseeable future. However, if we do not generate net revenues from commercial sales of RYTELO at the levels we anticipate, if we experience unforeseen events or choose to make other investments in our business, or our assumptions regarding our projected operating expenses are otherwise incorrect, we may require additional funding, which could include a combination of public or private equity offerings, debt financings (including additional tranches under the Pharmakon Loan Agreement, if available), collaborations, strategic alliances, licensing arrangements or marketing and distribution arrangements, which may not be possible. For example, changes in our operations, such as increased development, manufacturing and clinical trial expenses, or our undertaking of additional programs, business activities, or entry into strategic transactions, including potential future acquisitions of products, technologies or businesses, may cause our operating expenses to increase, perhaps significantly, which could require us to raise additional funding. If adequate funds are not available to us when we need them, our RYTELO commercialization efforts may be adversely affected and we may be unable to pursue further development of imetelstat, which would severely harm our business and we might cease operations.

Despite FDA approval of RYTELO in June 2024, the outcome of any clinical activities and/or regulatory approval process is highly uncertain, and we cannot reasonably estimate whether our future development activities may succeed, whether we will obtain regulatory approval for RYTELO in the EU for lower-risk MDS, or in any other jurisdictions or indications we are pursuing or may in the future pursue, or whether we will be able to effectively commercialize RYTELO in the U.S. for lower-risk MDS or in any other potential jurisdiction or indication, if at all. We may never recoup our investment in any RYTELO development, which would adversely affect our financial condition and our business and business prospects, and might cause us to cease operations. In addition, our plans and timing expectations could be further delayed or interrupted by the effects of macroeconomic or other global conditions, including those resulting from inflation, rising interest rates, prospects of a recession, government shutdowns, further changes in tariffs and other trade restrictions, bank failures and other disruptions to financial systems, civil or political unrest, military conflicts, pandemics or other health crises and supply chain and resource issues. Further, our future capital requirements are difficult to forecast and will depend on many factors, including:

•
the accuracy of the assumptions underlying our estimates for our capital needs;
•
the level of sales and market acceptance of RYTELO;
•
the scope, progress, timing, magnitude and costs of non-clinical and clinical development, manufacturing and commercialization of RYTELO, including potential commercialization in the EU for lower-risk MDS, if approved, or in any other jurisdictions or other indication we may pursue, subject to clearances and approvals by the FDA and similar international regulatory authorities;
•
delays or disruptions in opening sites, screening and enrolling patients or treating and following patients, in our current or any potential future clinical trials of RYTELO;
•
the costs, timing and outcomes of regulatory reviews or other regulatory actions related to RYTELO, including with respect to our MAA submission for RYTELO in the EU for lower-risk MDS;
•
the costs of preparing, filing and prosecuting patent applications and maintaining, enforcing and defending intellectual property-related claims;

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•
the costs of manufacturing, developing, commercializing and marketing RYTELO, including with respect to third-party vendors and service providers and our ability to achieve any meaningful reduction in manufacturing costs;
•
the sales price for RYTELO;
•
the availability of coverage and adequate third-party reimbursement for RYTELO;
•
the extent to which we acquire or in-license other drugs and technologies, or invest in businesses, products or technologies, although we currently have no commitments or agreements relating to any of these types of transactions, or to which we out-license RYTELO;
•
the extent to which we are able to enter into and conduct successful arrangements with third parties, including for the commercialization and marketing of RYTELO in any regions outside of the U.S., if approved for commercialization in such regions;
•
the extent and scope of our selling, general and administrative expenses, including expenses associated with potential future litigation;
•
our level of indebtedness and associated debt service obligations;
•
the costs of maintaining and operating facilities in California and New Jersey, as well as higher expenses for travel;
•
macroeconomic or other global conditions that may reduce our ability to access equity or debt capital or other financing on preferable terms, which may adversely affect future capital requirements and forecasts; and
•
the costs of enabling our personnel to work remotely, including providing supplies, equipment and technology necessary for them to perform their responsibilities.

In the event we need to raise additional capital to fund our business, including pursuant to the 2023 Sales Agreement with B. Riley Securities, Inc., the Tranche B Loan and the Tranche C Loan under the Pharmakon Loan Agreement, which are subject to certain funding conditions, capital lease transactions or other financing sources, such additional capital may not be available on acceptable terms, or at all. We may be unable to raise equity capital, or may be forced to do so at a stock price or on other terms that could result in substantial dilution of ownership for our stockholders. The receptivity of the public and private debt and equity markets to proposed financings has been substantially affected by uncertainty in the general economic, market and political climate due to the effects of macroeconomic or other global conditions, such as inflation, rising interest rates, prospects of a recession, government shutdowns, further changes in tariffs and other trade restrictions, bank failures and other disruptions to financial systems, civil or political unrest, military conflicts, pandemics or other health crises and supply chain and resource issues, and may in the future be affected by other factors which are unpredictable and over which we have no control. These effects have increased market volatility and could result in a significant long-term disruption of global financial markets, which could reduce or eliminate our ability to raise additional funds through financings, and could negatively impact the terms upon which we may raise those funds. Similarly, these macroeconomic conditions have created extreme volatility and disruption in the capital markets and is expected to have further global economic consequences. If the equity and credit markets deteriorate, including as a result of macroeconomic or other global conditions, such as inflation, rising interest rates, prospects of a recession, government shutdowns, further changes in tariffs and other trade restrictions, bank failures and other disruptions to financial systems, civil or political unrest, military conflicts, pandemics or other health crises and supply chain and resource issues, it may make any necessary debt or equity financing more difficult to obtain in a timely manner or on favorable terms, more costly or more dilutive. If we are unable to effectively commercialize RYTELO, or raise additional capital, if needed, or establish alternative collaborative arrangements with third-party collaborative partners for RYTELO, when needed, the development and commercialization of RYTELO may be further delayed, altered or abandoned, which might cause us to cease operations.

In addition, we may seek additional capital due to market conditions or strategic considerations even if we believe we have sufficient funds for our current or future operating plans. Due to uncertainty in the general economic, market and political climate, we may determine that it is necessary or appropriate to raise additional funds proactively to meet longer-term anticipated operating plans. To the extent that we raise additional capital through the sale of equity or convertible debt securities, including pursuant to the 2023 Sales Agreement, your ownership interest as a stockholder may be diluted, and the terms may include liquidation or other preferences that materially and adversely affect your rights as a stockholder. In addition, we have borrowed, and in the future may

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borrow, additional capital from institutional and commercial banking sources to fund clinical development and our future growth, including pursuant to our Pharmakon Loan Agreement or potentially pursuant to new arrangements with different lenders. We may borrow funds on terms under agreements, such as our Pharmakon Loan Agreement, that include restrictive covenants, including covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. Moreover, if we raise additional funds through alliance, collaborative or licensing arrangements with third parties, we may have to relinquish valuable rights to RYTELO or our technologies or grant licenses on terms that are not favorable to us.

Cash Flows Used In Operating Activities

Net cash used in operating activities was $218.6 million, $167.7 million and $127.4 million in 2024, 2023 and 2022, respectively. The increase in net cash used in operating activities in 2024 and 2023 primarily reflects an increase in net loss to $174.6 million , adjusted for non-cash items including stock based compensation expense related to employees and directors stock awards.

Cash Flows Used In/Provided By Investing Activities

Net cash used in investing activities was $106.0 million in 2024, primarily reflects decreased purchases of marketable securities, as well as increased proceeds from maturities of marketable securities. Net cash used in investing activities was $180.3 million and net cash provided by investing activities was $62.1 million in 2023 and 2022, respectively, which primarily reflects a higher rate of purchases than maturities of marketable securities.

Cash Flows from Financing Activities

Net cash provided by financing activities in 2024, 2023 and 2022 was $334.4 million, $362.0 million, and $87.3 million, respectively. Financing activities in 2024 primarily reflect an underwriting offering of 41,999,998 shares of common stock and a pre-funded warrant to purchase 8,002,668 shares in March 2024. The net cash proceeds from the March 2024 offering were approximately $141.0 million, after deducting the underwriting discount and other offering expenses paid by us, and $246.1 million net cash proceeds received under the Pharmakon Loan Agreement and Royalty Pharma Agreement.

Material Cash Requirements

Our material cash requirements in the short- and long-term consist of the following operational and manufacturing expenditures, a portion of which contain contractual or other obligations. We currently plan to fund our material cash requirements with our current financial resources together with net revenues from sales of RYTELO; however, if we do not generate sufficient funds from commercial sales of RYTELO, if we experience unforeseen events or choose to make other investments in our business, or our assumptions regarding our projected operating expenses are otherwise incorrect, we may require additional funding to fund our material cash requirements, which could include a combination of additional equity and debt financings, new collaborative arrangements, strategic alliances, or from other sources.

Operating expenditures

Our primary uses of cash and operating expenses relate to paying employees and consultants, commercializing RYTELO, administering clinical trials, ensuring an adequate supply of RYTELO (imetelstat), and providing technology and facility infrastructure to support our operations. Our research and development expenses in 2024 were $103.7 million, and we expect our investment in research and development expenses to increase in 2025. Our selling, general and administrative expenses were $145.7 million in 2024, and we expect our selling, general, and administrative expenses to increase in 2025 to support our commercial growth. On a long-term basis, we plan to manage future cash requirements relative to our long-term business plans.

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Contractual Obligations

Our operating expenditures primarily consist of our obligations under commercial purchase commitments related to our manufacturing and supply agreements for RYTELO and operating leases.

RYTELO requires long lead times to manufacture. Therefore, we make substantial and often long-term investments in our supply chain in order to ensure we have enough drug product to meet potential future commercialization requirements, as well as clinical trial needs.

We have engaged third‑party contract manufacturers and have re-established our own manufacturing supply chain to manufacture and supply quantities of RYTELO that meet applicable regulatory standards for current and potential future clinical trials and commercial uses. Related to those contract manufacturing agreements, we have commercial purchase commitments for approximately $131.4 million in the aggregate as of December 31, 2024. These purchase commitments can vary based on the commercial demand of RYTELO and are binding based on future manufacturing needs.

The leases for our office facilities in New Jersey and California contain rate escalations and options for us to extend the leases. Our operating expenditures primarily consist of our obligations under operating leases. The aggregate amount of future operating lease payments over the term of our leases is $3.2 million as of December 31, 2024. Refer to Note 8 on Operating Leases in Notes to Consolidated Financial Statements of this Report for additional detail of our lease obligations.

As of December 31, 2024, we have a long-term principal debt balance of $125.0 million in principal debt outstanding related to the Pharmakon Loan Agreement.

On November 1, 2024, we entered into the Pharmakon Loan Agreement, and in connection with this transaction, all obligations outstanding under the Hercules Loan Agreement were repaid in full on November 1, 2024, upon which the Hercules Loan Agreement was terminated. We expect our interest expense to increase in future periods due to the draw down of the Tranche A Loan and potential future draw downs of the other Term Loans under the Pharmakon Loan Agreement. See Note 9 on Debt in Notes to Consolidated Financial Statements of this Report for additional information on the Pharmakon Loan Agreement.

On November 1, 2024, we entered into the Royalty Pharma Agreement, pursuant to which we received an upfront payment of $125.0 million, or the Purchase Price, and Royalty Pharma obtained the right to receive Royalty Payments on future U.S. net sales of RYTELO for each calendar quarter during the term of the agreement. We are obligated to make Royalty Payments each quarter based on U.S. net sales of RYTELO at the royalty rates set forth in the agreement, which Royalty Payments are not determinable at this time, until the date when the aggregate Royalty Payments equal or exceed 1.65 times the Purchase Price, if this occurs by June 30, 2031, or the date when the aggregate Royalty Payments equal or exceed 2.0 times the Purchase Price. See Note 9 on Debt in Notes to Consolidated Financial Statements of this Report for additional information on the Royalty Pharma Agreement.

In the normal course of business, we enter into agreements with CROs for clinical trials and with other vendors for preclinical research studies, investigator-led trials and other services and products for operating purposes. We have not considered these commitments to be contractual obligations since the contracts are generally cancelable at any time by us upon less than 180 days’ prior written notice. We also have certain in-license agreements that require us to pay milestones to such third parties upon achievement of certain development, regulatory or commercial milestones. Amounts related to contingent milestone payments are not considered contractual obligations as they are contingent on the successful achievement of certain development, regulatory approval and commercial milestones, which may not be achieved.

89

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The following discussion about our market risk disclosures contains forward-looking statements. Actual results could differ materially from those projected in the forward-looking statements. We are exposed to credit risk and interest rate risk. We do not use derivative financial instruments for speculative or trading purposes.

Credit Risk. We currently place our cash, restricted cash, cash equivalents and marketable securities with multiple financial institutions in the United States. Deposits with banks may exceed the amount of insurance provided on such deposits. While we monitor the cash balances in our operating accounts and adjust the cash balances as appropriate, these cash balances could be impacted if the underlying financial institutions fail or could be subject to other adverse conditions in the financial markets. Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash equivalents and marketable securities. Cash equivalents and marketable securities currently consist of money market funds, U.S. government-sponsored enterprise securities, commercial paper and corporate notes. Our investment policy, approved by the audit committee of our board of directors, limits the amount we may invest in any one type of investment issuer, thereby reducing credit risk concentrations. We limit our credit and liquidity risks through our investment policy and through regular reviews of our portfolio against our policy. To date, we have not experienced any loss or lack of access to cash in our operating accounts or to our cash equivalents and marketable securities in our investment portfolio. The effect of a hypothetical decrease of 1% in the average yield earned on our cash equivalents and marketable securities would have resulted in an immaterial impact on our interest income for the year ended December 31, 2024.

Interest Rate Risk. The primary objective of our investment activities is to manage our marketable securities portfolio to preserve principal and liquidity while maximizing the return on the investment portfolio through the full investment of available funds without significantly increasing risk. To achieve this objective, we primarily invest in widely diversified investments with fixed interest rates, which carry a degree of interest rate risk. Fixed rate securities may have their fair value adversely impacted due to a rise in interest rates. Due in part to these factors, our future interest income may fall short of expectations due to changes in market conditions and in interest rates or we may suffer losses in principal if forced to sell securities which may have declined in fair value due to changes in interest rates. The fair value of our cash equivalents and marketable securities at December 31, 2024 was $502.9 million. These investments include $50.2 million of cash equivalents which are due in less than 90 days, $327.6 million of short-term investments which are due in less than one year and $94.5 million of long-term investments which are due in one to two years. We primarily invest our marketable securities portfolio in securities with at least an investment grade rating to minimize interest rate and credit risk as well as to provide for an immediate source of funds. Although changes in interest rates may affect the fair value of the marketable securities portfolio and cause unrealized gains or losses, such gains or losses would not be realized unless the investments are sold. Due to the nature of our investments, which are primarily money market funds, U.S. government-sponsored enterprise securities, commercial paper and corporate notes, we have concluded that there is no material interest rate risk exposure and a 1% movement in market interest rates would not have a significant impact on the total value of our portfolio.

We are exposed to risks associated with changes in interest rates in connection with our term loans. On November 1, 2024, we entered into a loan agreement (the “Loan Agreement”) with BioPharma Credit Investments V (Master) LP and BPCR Limited Partnership (each, a “Lender”), which are investment funds managed by Pharmakon Advisors, LP, and BioPharma Credit PLC, as collateral agent, which provides for a 5-year senior secured term loan facility of up to $250.0 million, divided into three committed tranches: (i) a Tranche A Loan in an aggregate principal amount of $125.0 million (the “Tranche A Loan”) which was funded on November 1, 2024 (the “Tranche A Closing Date”); (ii) a Tranche B Loan in an aggregate principal amount of $75.0 million (the “Tranche B Loan”) which is available, subject to certain limited conditions, at the Company’s option; and (iii) a Tranche C Loan in an aggregate principal amount of $50.0 million (the “Tranche C Loan”, and together with the Tranche A Loan and the Tranche B Loan, collectively, the “Term Loans”) which is available to us upon reaching a specified trailing twelve-month RYTELO™ revenue milestone. The Term Loans mature on November 1, 2029 (the "Maturity Date"). The Term Loans bear interest at a variable rate per annum equal to 5.75% plus three-month Secured Overnight Financing Rate (“SOFR”) with a SOFR floor of 3.00%. As of inception of the Tranche A Loan, the interest rate applicable to the Tranche A Loan was 10.32%. Interest is due and payable quarterly on the last day of each quarter with the first payment due on December 31, 2024. The Loan Agreement requires we pay an amount equal to 2.50% of the Lenders’ total committed amount to fund the Term Loans, payable with respect to each Term Loan on the funding date of such Term Loan. Based on our current indebtedness of $125.0 million under the Term Loans as of December 31, 2024, a 1.0% change in the SOFR would increase net interest expense on our current indebtedness by approximately $6.0 million.

Foreign Currency Risk. We may be exposed to fluctuations in foreign currencies with regard to certain agreements with service providers. Depending on the strengthening or weakening of the United States dollar, realized and unrealized currency may fluctuate. Management has determined that these fluctuations would not have a material impact on the financial statements.

90

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The following financial statements and the related notes thereto, of Geron Corporation and its consolidated subsidiaries, and the Report of Independent Registered Public Accounting Firm, Ernst & Young LLP, are filed as a part of this Report.

| Page
Report of Independent Registered Public Accounting Firm (PCAOB ID: 42) | 92
Consolidated Balance Sheets | 95
Consolidated Statements of Operations | 96
Consolidated Statements of Comprehensive Loss | 97
Consolidated Statements of Stockholders’ Equity | 98
Consolidated Statements of Cash Flows | 100
Notes to Consolidated Financial Statements | 101

91

Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of Geron Corporation

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Geron Corporation (the Company) as of December 31, 2024 and 2023, the related consolidated statements of operations, comprehensive loss, stockholders' equity and cash flows for each of the three years in the period ended December 31, 2024 and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2024, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), and our report dated February 26, 2025 expressed an unqualified opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

| Revenue recognition - net product revenue
Description of the Matter | As described in Note 1 to the financial statements, the Company sells its sole product, RYTELO, through third party distributors and specialty pharmacies. The third party distributors subsequently resell the product through their related specialty pharmacy providers to patients and health care providers. Product revenue from RYTELO sales is recorded net of variable consideration related to government rebates and rebates under managed care plans and commercial payor contracts, estimated allowances for sales returns, government chargebacks, prompt payment discounts, patient coupon programs, and specialty distributor and wholesaler

92

| fees, upon delivery of the product to the customers. Variable consideration is recorded at the time the related product revenue is recognized or in the same period that the related product revenue is recognized. For the period ended December 31, 2024, the Company has recorded gross product revenue of $89.4 million and net product revenue of $76.5 million, net of total gross-to-net adjustments of $12.9 million. Auditing the Company’s product revenue was challenging, specifically related to the effort required to audit third party distributors and specialty pharmacies sales activity to assess whether items deducted from gross product sales were complete and properly accounted for in the estimation of variable consideration. This involved assessing estimates and judgments based on sales or invoice data, contractual terms, historical utilization rates, new information regarding changes in applicable regulations and guidelines that would impact the amount of the actual rebates, expectations regarding future utilization rates and channel inventory data.
How We Addressed the Matter in Our Audit | Our audit procedures over the Company’s product revenue from third party distributors and specialty pharmacies included, among others, performing analytical procedures to detect and investigate potential anomalies within the data. We also examined the terms and conditions for a sample of new or amended contracts with third party distributors to ensure appropriate revenue recognition treatment. We also confirmed the terms and conditions of contracts directly with a sample of third party distributors, to identify any potential side agreements and terms impacting the appropriateness of revenue recognized. In addition, we obtained written representations from the Company’s personnel that oversee the commercial operations regarding the completeness of the terms and conditions reported to the Company’s legal and accounting departments.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 1992.

San Jose, California

February 26, 2025

93

Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of Geron Corporation

Opinion on Internal Control Over Financial Reporting

We have audited Geron Corporation’s internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, Geron Corporation (the Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2024, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets of the Company as of December 31, 2024 and 2023, the related consolidated statements of operations, comprehensive loss, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2024, and the related notes and our report dated February 26, 2025 expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management's Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

San Jose, California

February 26, 2025

94

GERON CORPORATION

CONSOLIDATED BALANCE SHEETS

|  | December 31, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
|  | (In thousands, except share and per share data) |
ASSETS |  |  |  |  |  |
Current assets: |  |  |  |  |  |
Cash and cash equivalents |  | $ | 79,016 |  |  | $ | 70,023 |
Restricted cash |  |  | 1,860 |  |  |  | 1,115 |
Marketable securities |  |  | 327,550 |  |  |  | 263,676 |
Accounts receivable, net |  |  | 35,946 |  |  |  | — |
Interest and other receivables |  |  | 2,853 |  |  |  | 1,655 |
Inventory |  |  | 38,714 |  |  |  | — |
Prepaid and other current assets |  |  | 5,053 |  |  |  | 4,879 |
Total current assets |  |  | 490,992 |  |  |  | 341,348 |
Noncurrent marketable securities |  |  | 94,519 |  |  |  | 43,298 |
Property and equipment, net |  |  | 1,310 |  |  |  | 1,177 |
Operating leases, right-of-use assets |  |  | 2,881 |  |  |  | 3,556 |
Deposits and other assets |  |  | 4,079 |  |  |  | 4,697 |
|  | $ | 593,781 |  |  | $ | 394,076 |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |
Accounts payable |  | $ | 8,595 |  |  | $ | 6,161 |
Accrued compensation and benefits |  |  | 22,808 |  |  |  | 13,759 |
Operating lease liabilities |  |  | 974 |  |  |  | 949 |
Liability related to sale of future royalties |  |  | 20,372 |  |  |  | — |
Accrued liabilities |  |  | 35,549 |  |  |  | 40,308 |
Debt |  |  | — |  |  |  | 46,893 |
Total current liabilities |  |  | 88,298 |  |  |  | 108,070 |
Noncurrent operating lease liabilities |  |  | 2,266 |  |  |  | 3,006 |
Noncurrent liability related to sale of future royalties |  |  | 104,421 |  |  |  | — |
Noncurrent debt |  |  | 118,476 |  |  |  | 35,051 |
Total liabilities |  |  | 313,461 |  |  |  | 146,127 |
Commitments and contingencies |  |  |  |  |  |
Stockholders' equity: |  |  |  |  |  |
Preferred stock, $0.001 par value; 3,000,000 shares authorized; no shares issued and outstanding at December 31, 2024 and 2023 |  |  | — |  |  |  | — |
Common stock, $0.001 par value; 1,350,000,000 shares authorized; 606,387,666 and 544,912,215 shares issued and outstanding at December 31, 2024 and 2023, respectively |  |  | 606 |  |  |  | 545 |
Additional paid-in capital |  |  | 2,051,794 |  |  |  | 1,844,988 |
Accumulated deficit |  |  | (1,772,341 | ) |  |  | (1,597,769 | )
Accumulated other comprehensive gain |  |  | 261 |  |  |  | 185 |
Total stockholders' equity |  |  | 280,320 |  |  |  | 247,949 |
|  | $ | 593,781 |  |  | $ | 394,076 |

See accompanying notes.

95

GERON CORPORATION

CONSOLIDATED STATEMENTS OF OPERATIONS

|  |  | Year Ended December 31, |
|  |  | 2024 |  |  | 2023 |  |  | 2022 |
|  |  | (In thousands, except share and per share data) |
Revenues: |  |  |  |  |  |  |  |  |  |
Product revenue, net |  |  | $ | 76,495 |  |  | $ | - |  |  | $ | - |
License fees and royalties |  |  |  | 499 |  |  |  | 237 |  |  |  | 596 |
Operating expenses: |  |  |  |  |  |  |  |  |  |
Cost of goods sold |  |  |  | 1,256 |  |  |  | — |  |  |  | — |
Research and development |  |  |  | 103,738 |  |  |  | 125,046 |  |  |  | 95,518 |
Selling, general and administrative |  |  |  | 145,732 |  |  |  | 69,135 |  |  |  | 43,628 |
Total operating expenses |  |  |  | 250,726 |  |  |  | 194,181 |  |  |  | 139,146 |
Loss from operations |  |  |  | (173,732 | ) |  |  | (193,944 | ) |  |  | (138,550 | )
Interest income |  |  |  | 19,607 |  |  |  | 18,152 |  |  |  | 2,529 |
Interest expense |  |  |  | (18,504 | ) |  |  | (8,312 | ) |  |  | (6,882 | )
Other income (expense), net |  |  |  | (236 | ) |  |  | (23 | ) |  |  | 1,002 |
Loss on extinguishment of debt |  |  |  | (1,707 | ) |  |  | — |  |  |  | — |
Net loss |  |  | $ | (174,572 | ) |  | $ | (184,127 | ) |  | $ | (141,901 | )
Basic and diluted net loss per share |  |  | $ | (0.27 | ) |  | $ | (0.32 | ) |  | $ | (0.37 | )
Shares used in computing basic and diluted net loss per share |  |  |  | 646,033,247 |  |  |  | 570,645,405 |  |  |  | 380,784,846 |

See accompanying notes.

96

GERON CORPORATION

STATEMENTS OF COMPREHENSIVE LOSS

|  | Year Ended December 31, |
|  | 2024 |  |  | 2023 |  |  | 2022 |
|  | (In thousands) |
Net loss |  | $ | (174,572 | ) |  | $ | (184,127 | ) |  | $ | (141,901 | )
Net unrealized loss (gain) on marketable securities |  |  | 88 |  |  |  | 431 |  |  |  | (68 | )
Foreign currency translation adjustments |  |  | (12 | ) |  |  | (27 | ) |  |  | 22 |
Comprehensive loss |  | $ | (174,496 | ) |  | $ | (183,723 | ) |  | $ | (141,947 | )

See accompanying notes.

97

GERON CORPORATION

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

98

|  |  |  |  |  |  |  |  |  |  |  |  |  | Accumulated |  |  |  |
|  |  |  |  |  |  |  | Additional |  |  |  |  |  | Other |  |  | Total |
|  | Common Stock |  |  | Paid-In |  |  | Accumulated |  |  | Comprehensive |  |  | Stockholders' |
|  | Shares |  |  | Amount |  |  | Capital |  |  | Deficit |  |  | Gain (Loss) |  |  | Equity |
|  | (In thousands, except share data) |
Balances at December 31, 2021 |  |  | 323,731,591 |  |  | $ | 324 |  |  | $ | 1,398,006 |  |  | $ | (1,271,741 | ) |  | $ | (173 | ) |  |  | 126,416 |
Net loss |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (141,901 | ) |  |  | — |  |  |  | (141,901 | )
Other comprehensive loss |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (68 | ) |  |  | (68 | )
Foreign currency translation adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 22 |  |  |  | 22 |
Issuance of common stock, pre-funded warrant and warrants to purchase common stock in public offering, net of issuance costs of $5,066 |  |  | 53,333,334 |  |  |  | 53 |  |  |  | 69,863 |  |  |  | — |  |  |  | — |  |  |  | 69,916 |
Issuance of common stock in connection with exercise of warrants |  |  | 11,663,387 |  |  |  | 12 |  |  |  | 15,151 |  |  |  | — |  |  |  | — |  |  |  | 15,163 |
Stock-based compensation related to issuance of common stock and options in exchange for services |  |  | 15,962 |  |  |  | — |  |  |  | 264 |  |  |  | — |  |  |  | — |  |  |  | 264 |
Issuances of common stock under equity plans |  |  | 1,518,250 |  |  |  | 1 |  |  |  | 2,184 |  |  |  | — |  |  |  | — |  |  |  | 2,185 |
Stock-based compensation for equity- based awards to employees and directors |  |  | — |  |  |  | — |  |  |  | 8,001 |  |  |  | — |  |  |  | — |  |  |  | 8,001 |
Balances at December 31, 2022 |  |  | 390,262,524 |  |  |  | 390 |  |  |  | 1,493,469 |  |  |  | (1,413,642 | ) |  |  | (219 | ) |  |  | 79,998 |
Net loss |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (184,127 | ) |  |  | — |  |  |  | (184,127 | )
Other comprehensive gain |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 431 |  |  |  | 431 |
Foreign currency translation adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (27 | ) |  |  | (27 | )
Issuance of common stock, pre-funded warrant and warrants to purchase common stock in public offering, net of issuance costs of $14,507 |  |  | 68,007,741 |  |  |  | 68 |  |  |  | 213,269 |  |  |  | — |  |  |  | — |  |  |  | 213,337 |
Issuance of common stock in connection with exercise of warrants |  |  | 77,349,858 |  |  |  | 78 |  |  |  | 105,834 |  |  |  | — |  |  |  | — |  |  |  | 105,912 |
Stock-based compensation related to issuance of common stock and options in exchange for services |  |  | 36,864 |  |  |  | 1 |  |  |  | 828 |  |  |  | — |  |  |  | — |  |  |  | 829 |
Issuances of common stock under equity plans |  |  | 9,255,228 |  |  |  | 8 |  |  |  | 13,062 |  |  |  | — |  |  |  | — |  |  |  | 13,070 |
Stock-based compensation for equity- based awards to employees and directors |  |  | — |  |  |  | — |  |  |  | 18,526 |  |  |  | — |  |  |  | — |  |  |  | 18,526 |
Balances at December 31, 2023 |  |  | 544,912,215 |  |  |  | 545 |  |  |  | 1,844,988 |  |  |  | (1,597,769 | ) |  |  | 185 |  |  |  | 247,949 |
Net loss |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (174,572 | ) |  |  | — |  |  |  | (174,572 | )
Other comprehensive gain |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 88 |  |  |  | 88 |
Foreign currency translation adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (12 | ) |  |  | (12 | )
Issuance of common stock, pre-funded warrant and warrants to purchase common stock in public offering, net of issuance costs of $9,271 |  |  | 41,999,998 |  |  |  | 42 |  |  |  | 140,687 |  |  |  | — |  |  |  | — |  |  |  | 140,729 |
Issuance of common stock in connection with exercise of warrants |  |  | 1,071,981 |  |  |  | 1 |  |  |  | 1,393 |  |  |  | — |  |  |  | — |  |  |  | 1,394 |
Stock-based compensation related to issuance of common stock and options in exchange for services |  |  | 8,351 |  |  |  | — |  |  |  | 134 |  |  |  | — |  |  |  | — |  |  |  | 134 |
Issuances of common stock under equity plans |  |  | 18,395,121 |  |  |  | 18 |  |  |  | 32,665 |  |  |  | — |  |  |  | — |  |  |  | 32,683 |
Stock-based compensation for equity- based awards to employees and directors |  |  | — |  |  |  | — |  |  |  | 31,927 |  |  |  | — |  |  |  | — |  |  |  | 31,927 |
Balances at December 31, 2024 |  |  | 606,387,666 |  |  | $ | 606 |  |  | $ | 2,051,794 |  |  | $ | (1,772,341 | ) |  | $ | 261 |  |  | $ | 280,320 |

See accompanying notes.

99

GERON CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

|  | Year Ended December 31, |
|  | 2024 |  |  | 2023 |  |  | 2022 |
|  | (In thousands) |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |
Net loss |  | $ | (174,572 | ) |  | $ | (184,127 | ) |  | $ | (141,901 | )
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  | 546 |  |  |  | 442 |  |  |  | 288 |
Accretion and amortization on investments, net |  |  | (9,683 | ) |  |  | (11,150 | ) |  |  | (965 | )
Amortization of debt issuance costs/debt discount |  |  | (3,108 | ) |  |  | 1,088 |  |  |  | 1,327 |
Payment on royalty agreement |  |  | (2,186 | ) |  |  |  |  |  |
Non-cash interest expense on liabilities for sales of future royalties |  |  | 5,345 |  |  |  | — |  |  |  | — |
Loss of extinguishment of debt |  |  | 1,707 |  |  |  | — |  |  |  | — |
Stock-based compensation for services by non-employees |  |  | 135 |  |  |  | 828 |  |  |  | 264 |
Stock-based compensation for employees and directors |  |  | 31,185 |  |  |  | 18,526 |  |  |  | 8,001 |
Amortization of right-of-use assets |  |  | 675 |  |  |  | 591 |  |  |  | 580 |
Increase in allowance for doubtful accounts |  |  | (251 | ) |  |  | — |  |  |  | — |
Changes in assets and liabilities: |  |  |  |  |  |  |  |  |
Inventory |  |  | (37,971 | ) |  |  | — |  |  |  | — |
Accounts receivable, net |  |  | (35,695 | ) |  |  | — |  |  |  | — |
Interest and other receivables |  |  | (1,198 | ) |  |  | 1,490 |  |  |  | (1,381 | )
Prepaid expenses and other assets |  |  | (175 | ) |  |  | (886 | ) |  |  | (2,630 | )
Deposit and other assets |  |  | 618 |  |  |  | 692 |  |  |  | (594 | )
Accounts payable |  |  | 2,435 |  |  |  | (4,029 | ) |  |  | 3,503 |
Accrued compensation and benefits |  |  | 9,049 |  |  |  | 2,224 |  |  |  | 3,435 |
Accrued liabilities |  |  | (4,759 | ) |  |  | 7,208 |  |  |  | 3,266 |
Operating lease liabilities |  |  | (715 | ) |  |  | (640 | ) |  |  | (572 | )
Net cash used in operating activities |  |  | (218,618 | ) |  |  | (167,743 | ) |  |  | (127,379 | )
Cash flows from investing activities: |  |  |  |  |  |  |  |  |
Purchases of property and equipment |  |  | (680 | ) |  |  | (830 | ) |  |  | (431 | )
Purchases of marketable securities |  |  | (476,932 | ) |  |  | (475,594 | ) |  |  | (258,007 | )
Proceeds from maturities of marketable securities |  |  | 371,608 |  |  |  | 296,102 |  |  |  | 320,505 |
Net cash provided by (used in) investing activities |  |  | (106,004 | ) |  |  | (180,322 | ) |  |  | 62,067 |
Cash flows from financing activities: |  |  |  |  |  |  |  |  |
Proceeds from issuances of common stock from equity plans |  |  | 32,683 |  |  |  | 13,072 |  |  |  | 2,185 |
Proceeds from issuance of common stock and warrants in public offering, net of paid issuance costs |  |  | 140,729 |  |  |  | 213,337 |  |  |  | 69,916 |
Proceeds from exercise of warrants |  |  | 1,394 |  |  |  | 105,912 |  |  |  | 15,163 |
Proceeds from sale of future royalties |  |  | 125,000 |  |  |  | — |  |  |  | — |
Proceeds from debt financing, net of paid debt issuance costs and debt discounts |  |  | 121,120 |  |  |  | 29,700 |  |  |  | — |
Repayment of debt |  |  | (86,554 | ) |  |  | — |  |  |  | — |
Net cash provided by financing activities |  |  | 334,372 |  |  |  | 362,021 |  |  |  | 87,264 |
Net effect of exchange rates on cash, cash equivalents and restricted cash |  |  | (12 | ) |  |  | (27 | ) |  |  | 22 |
Net increase in cash, cash equivalents and restricted cash |  |  | 9,738 |  |  |  | 13,929 |  |  |  | 21,974 |
Cash, cash equivalents and restricted cash at the beginning of the period |  |  | 71,138 |  |  |  | 57,209 |  |  |  | 35,235 |
Cash, cash equivalents and restricted cash at the end of the period |  | $ | 80,876 |  |  | $ | 71,138 |  |  | $ | 57,209 |

See accompanying notes.

100

GERON CORPORATION

NOTES TO FINANCIAL STATEMENTS

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization

The terms “Geron”, the “Company”, “we” and “us” as used in this report refer to Geron Corporation, which was incorporated in the State of Delaware on November 28, 1990, and its wholly-owned subsidiaries, Geron UK Limited, or Geron UK, a United Kingdom company, and Geron Netherlands B.V., or Geron Netherlands, a Netherlands company. Geron UK was incorporated in September 2021, and its operations commenced in January 2022. Geron Netherlands was incorporated in February 2023, and its operations commenced in June 2023. The Company's first-in-class telomerase inhibitor, RYTELOTM (imetelstat), was approved by the U.S. Food and Drug Administration, or FDA, on June 6, 2024 for the treatment of certain adult patients with low- to intermediate-1 risk myelodysplastic syndromes, or lower-risk MDS, and is under development for the treatment of other hematologic malignancies.

Principles of Consolidation

The consolidated financial statements include the accounts Geron Corporation and its wholly-owned subsidiaries, Geron UK and Geron Netherlands. We have eliminated intercompany accounts and transactions. We prepare the financial statements of Geron UK and Geron Netherlands using the local currency as the functional currency. We translate the assets and liabilities of Geron UK and Geron Netherlands at rates of exchange at the balance sheet date and translate income and expense items at average monthly rates of exchange. Foreign currency translation adjustments are included in accumulated other comprehensive income (loss), a separate component of stockholders’ equity, on our consolidated balance sheets.

Net Loss Per Share

Basic net income (loss) per share is calculated by dividing net income (loss) by the weighted-average number of shares of common stock outstanding for the periods presented without consideration of potential common shares. In April 2022, we entered into an underwriting agreement in connection with a public offering of our common stock, pursuant to which we issued a pre-funded warrant to purchase 18,095,238 shares of our common stock, also known as the 2022 pre-funded warrant, together with accompanying warrants to purchase shares of our common stock. In May 2020, we entered into an underwriting agreement in connection with a public offering of our common stock, pursuant to which we issued a pre-funded warrant to purchase 8,335,239 shares of our common stock, or the 2020 pre-funded warrant, together with accompanying warrants to purchase shares of our common stock. The 2022 pre-funded warrant and 2020 pre-funded warrant each are exercisable immediately at an exercise price of $0.001 per share. In January 2023, we completed an underwritten public offering of 68,007,741 shares of our common stock and a pre-funded warrant to purchase 25,000,000 shares of our common stock, or the 2023 pre-funded warrant. In March 2024, we completed an underwritten public offering of 41,999,998 shares of our common stock and a pre-funded warrant to purchase 8,002,668 shares of our common stock, or the 2024 pre-funded warrant. We included the 2023 pre-funded warrant, the 2022 pre-funded warrant and the 2020 pre-funded warrant in the computation of basic net loss per share, as applicable, since their exercise price is negligible, and they may be exercised at any time. See Note 10 on Stockholders' Equity for further discussion of our public offerings.

Diluted net income per share would be calculated by adjusting the weighted-average number of shares of common stock outstanding for the dilutive effect of additional shares of common stock that would have been outstanding if potentially dilutive securities had been issued, as determined using the treasury-stock method. Potential dilutive securities consist of outstanding stock options and warrants to purchase our common stock. Diluted net loss per share excludes potential dilutive securities for all periods presented as their effect would be anti-dilutive. Accordingly, basic and diluted net loss per share is the same for all periods presented in the accompanying consolidated statements of operations. Since we incurred a net loss for 2024, 2023, and 2022, the diluted net loss per share calculation excludes potential dilutive securities of 77,369,889, 75,458,854 and 145,726,765 shares, respectively, related to outstanding stock options and warrants, as their effect would have been anti-dilutive.

101

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Use of Estimates

The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States, or U.S. GAAP. The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, we evaluate our estimates, including those related to accrued liabilities, revenue recognition, fair value of marketable securities and equity investments, operating leases, right-of-use assets, lease liabilities, income taxes, and stock-based compensation. We base our estimates on historical experience and on various other market specific and relevant assumptions that we believe to be reasonable under the circumstances. Actual results could differ from those estimates.

Revenue Recognition

We recognize revenue in accordance with the provisions of Accounting Standards Codification Topic 606, Revenue from Contracts with Customers, or Topic 606. In determining the appropriate amount and timing of revenue to be recognized under this guidance, we perform the following five steps: (i) identify the contract(s) with our customer; (ii) identify the promised goods or services in the agreement and determine whether they are performance obligations, including whether they are distinct in the context of the agreement; (iii) measure the transaction price, including the constraint on variable consideration; (iv) allocate the transaction price to the performance obligations based on stand-alone selling prices; and (v) recognize revenue when (or as) we satisfy each performance obligation. We recognize shipping and handling costs as an expense in cost of goods sold when we transfer control to a customer. Revenues are recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services.

A performance obligation is a promise in an agreement to transfer a distinct good or service to the customer and is the unit of account in Topic 606. Significant management judgment is required to determine the level of effort required and the period over which completion of the performance obligations is expected under an agreement. If reasonable estimates regarding when performance obligations are either complete or substantially complete cannot be made, then revenue recognition is deferred until a reasonable estimate can be made. Revenue is then recognized over the remaining estimated period of performance using the cumulative catch-up method.

We allocate the total transaction price to each performance obligation based on the estimated relative stand-alone selling prices of the promised goods or services underlying each performance obligation. Estimated selling prices for license rights are calculated using an income approach model and include the following key assumptions, judgments and estimates: the development timeline, revenue forecast, commercialization expenses, discount rate and probabilities of technical and regulatory success.

We distribute RYTELO in the U.S. through third party distributors and specialty pharmacies who are our customers. The third party distributors subsequently resell our product through their related specialty pharmacy providers to patients and health care providers. Separately, we have or may enter into payment arrangements with various third-party payors including pharmacy benefit managers, private healthcare insurers and government healthcare programs who provide coverage and reimbursement for our product that have been prescribed to a patient.

Following is a description of the principal activities from which we generate revenue. License fees and royalty revenue primarily represent amounts earned under agreements that out-license our technology to various companies. To date, our only source of product revenue has been from the U.S. sales of RYTELO, which we began shipping to our customers in June 2024. See Note 2 on Revenue Recognition.

Product Sales, Net

Product sales revenue is recognized when control has transferred to the customer, which occurs at a point in time, which is typically on delivery to the customer or, in the case of products that are subject to consignment agreements, when the customer removes product from our consigned inventory location for shipment directly to a patient.

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GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Items Deducted from Gross Product Sales

Revenues from sales of products are recorded net of government rebates and rebates under managed care plans and commercial payor contracts, estimated allowances for sales returns, government chargebacks, prompt payment discounts, patient coupon programs, and specialty distributor and wholesaler fees. Calculating certain of these items involves estimates and judgments based on sales or invoice data, contractual terms, historical utilization rates, new information regarding changes in applicable regulations and guidelines that would impact the amount of the actual rebates, our expectations regarding future utilization rates and channel inventory data. We review the adequacy of our provisions for sales deductions on a quarterly basis. Amounts accrued for sales deductions are adjusted when trends or significant events indicate that adjustment is appropriate and to reflect actual experience. The most significant items deducted from gross product sales where we exercise judgment are rebates, sales returns and chargebacks.

Net Product Revenues

Our net product revenues are recognized, net of variable consideration related to certain allowances and accruals, at the time our customers obtain control of our product, which is generally upon delivery to our customers. We use the expected value method, which is the sum of probability-weighted amounts in a range of possible consideration amounts to estimate variable consideration and consideration payable to parties other than our customers related to our product sales.

We record reserves, based on contractual terms, for components related to product sold during the reporting period, as well as our estimate of product that remains in the distribution channel inventory at the end of the reporting period that we expect will be sold to qualified healthcare providers. On a quarterly basis, we update our estimates and record any needed adjustments in the period we identify the adjustments.

We sell RYTELO to our customers at wholesale acquisition cost, and calculate product revenue from RYTELO sales, net of variable consideration and consideration payable to parties other than our customers. Variable consideration and consideration payable to parties other than our customers consists of estimates related to the following categories:

Other Allowances

We pay fees for distribution services, such as fees for certain data that customers provide to us. We estimate our customers will earn these fees and deduct these fees from gross product revenues and accounts receivable at the time we recognize the related revenues.

Discounts for Prompt Payment

We provide for prompt payment discounts to our customers, which are recorded as a reduction in gross product revenue in the same period that the related product revenue is recognized.

Product Returns

We offer customers the right to return products if they are damaged, defective, or expired, as defined in customer agreements. We estimate product returns considering experience from similar products in the market, historical return patterns, sales data, and inventory levels in the distribution channel. These estimates are recorded as a reduction in gross product revenue at the time of sale. Once products are returned, they are destroyed; we do not record a right of return asset.

Chargebacks

Chargebacks occur when our contracted customers, mainly federal agencies that can purchase off the Federal Supply Schedule and Public Health Service 340B covered entities, buy directly from our distributors and wholesalers at discounted prices. The distributors and wholesalers then charge us the difference between their purchase price and the discounted price. We estimate chargebacks considering the terms of the applicable arrangement and our visibility regarding utilization. These chargebacks are recorded in the same period as the related revenue, reducing our net product revenue and receivables. We typically issue credits for these amounts within a few weeks of notification.

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GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Government Rebates

We are subject to discount obligations under government programs. Reserves for rebates payable under these government programs are recorded in the same period as gross product revenue, reducing our gross product revenue and creating a liability in accrued liabilities. Major rebates include those from the Medicare and Medicaid programs. Estimates for rebates are made considering statutory discount rates and expected utilization. These estimates are updated each period with actual claims and other current information, taking into account historical data, comparable products and other considerations.

Co-payment Assistance

We offer co-payment assistance to patients with commercial insurance that have coverage and reside in states that allow co-payment assistance. We estimate the average co-payment assistance amounts for our products based on expected customer demographics and record any such amounts within accrued expenses and a reduction to product revenue.

License Agreements

We previously entered into several license agreements with various oncology, diagnostics, research tools and biologics production companies, whereby we granted certain rights to our non-imetelstat related technologies. Under these agreements, non-refundable upfront fees and annual license maintenance fees were considered fixed consideration, while milestone payments and royalties were identified as variable consideration. Since June 30, 2021, no active license agreements remain. The license related to our specialized oligonucleotide backbone chemistry, as well as patent rights covering the synthesis of monomers, the building blocks of oligonucleotides, terminated effective April 2021.

In connection with the divestiture of our human embryonic stem cell assets, including intellectual property and proprietary technology, to Lineage Cell Therapeutics, Inc. (formerly BioTime, Inc. which acquired Asterias Biotherapeutics, Inc.) in 2013, we are entitled to receive royalties on sales of certain research or commercial products utilizing our divested intellectual property.

Licenses of Intellectual Property

If we determine the license to intellectual property is distinct from the other performance obligations identified in the agreement and the licensee can use and benefit from the license, we recognize revenue from non-refundable upfront fees allocated to the license upon the completion of the transfer of the license to the licensee. For such licenses, we recognize revenue from annual license maintenance fees upon the start of the new license period. For licenses that are bundled with other performance obligations, we assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable upfront fees or annual license maintenance fees. At each reporting date, we reassess the progress and, if necessary, adjust the measure of performance and related revenue recognition.

Milestone Payments

At the inception of each agreement that includes milestone payments, we evaluate whether the milestones are considered probable of being achieved and estimate the amount to be included in the transaction price using the most likely amount method. If it is probable that a significant revenue reversal would not occur, the value of the associated milestone is included in the transaction price. For milestones that we do not deem to be probable of being achieved, the associated milestone payments are fully constrained and the value of the milestone is excluded from the transaction price with no revenue being recognized. For example, milestone payments that are not within our control, such as regulatory-related accomplishments, are not considered probable of being achieved until those accomplishments have been communicated by the relevant regulatory authority. Once the assessment of probability of achievement becomes probable, we recognize revenue for the milestone payment. At each reporting date, we assess the probability of achievement of each milestone under any current agreements.

104

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Royalties

For agreements with sales-based royalties, including milestone payments based on the level of sales, where the license is deemed to be the predominant item to which the royalties relate, we recognize revenue at the later of (a) when the related sales occur, or (b) when the performance obligation, to which some or all of the royalty has been allocated, has been satisfied (or partially satisfied). At each reporting date, we estimate the sales incurred by each licensee during the reporting period based on historical experience and accrue the associated royalty amount.

Interest Expense

The liability related to the Royalty Pharma Agreement and the related interest expense are measured based on our current estimate of the timing and amount of expected future Royalty Payments expected to be paid over the estimated term of the Royalty Pharma Agreement using a discounted cash flow model. The liability is amortized using the effective interest rate method, resulting in recognition of non-cash interest expense over the estimated term of the agreement. Each reporting period, we assessed the estimated timing and amount of future expected Royalty Payments over the estimated term. If there are changes to the estimate, we recognize the impact to the liability’s amortization schedule and the related non-cash interest expense prospectively. Additionally, the transaction costs associated with the liability will be amortized to non-cash interest expense over the estimated term of the Royalty Pharma Agreement.

Fair Value of Financial Instruments

Cash Equivalents and Marketable Securities

We consider all highly liquid investments with an original maturity of three months or less to be cash equivalents. We are subject to credit risk related to our cash equivalents and marketable securities. Our marketable debt securities include U.S. Treasury securities, municipal securities, government-sponsored enterprise securities, commercial paper and corporate notes.

We classify our marketable debt securities as available for sale. We record available for sale debt securities at fair value with unrealized gains and losses reported in accumulated other comprehensive income (loss) in stockholders’ equity. Realized gains and losses are included in interest income and are derived using the specific identification method for determining the cost of securities sold and have been insignificant to date. Dividend and interest income are recognized when earned and included in interest income on our consolidated statements of operations. If an available-for-sale security’s fair value is less than its amortized cost basis, we evaluate whether the decline is the result of a credit loss, in which case an impairment is recorded through an allowance for credit losses. We have not recorded any allowances for credit losses on our available-for-sale securities for the years ended December 31, 2024 and 2023 as we have not identified any unrealized losses for these securities attributable to credit factors. See Note 4 on Fair Value Measurements.

Restricted Cash

Restricted cash consists of funds maintained in separate money market or certificate of deposit accounts for credit card purchases.

Accounts Receivable

In general, accounts receivable consists of amounts due from customers, net of customer allowances for cash discounts, product returns, and chargebacks. Accounts receivable are stated net of an allowance that reflects our current estimate of credit losses expected to occur over the life of the receivable. In developing our allowance for expected credit losses, we use assumptions to capture the risk of loss, even if remote, based on a number of factors including existing contractual payment terms, individual customer circumstances, historical payment patterns of our customers, a review of the local economic environment and its potential impact on expected future customer payment patterns. The payment terms on our trade receivables are relatively short. As a result, our collection risk is mitigated to a certain extent by the fact that sales are collected in a relatively short period of time, allowing for the ability to reduce exposure on defaults if collection issues are identified. We update our allowance as necessary to reflect expected credit losses over the remaining lives of the accounts receivable for outstanding trade receivables that are past due, have known disputes or have experienced any negative credit events that may result in future

105

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

collectability issues. We do not currently expect our current or future exposures to credit losses to have a significant impact on us. The estimated allowance for expected credit losses was not material as of December 31, 2024, nor were the changes to the allowance during any of the periods presented.

Inventory

Inventory is recorded at the lower of cost or net realized value, with cost determined under the weighted average method. Inventory costs include third-party contract manufacturing, third-party packaging services, freight, salaries, wages and stock-based compensation for personnel involved in the manufacturing process, and indirect overhead costs. We periodically review our inventories to identify obsolete, slow moving, excess or otherwise unsaleable items. If obsolete, slow moving, excess or unsaleable items are observed and there are no alternate uses for the inventory, we record a write-down to net realizable value. The determination of net realizable value requires judgment including consideration of many factors, such as estimates of future product demand, product net selling prices, current and future market conditions and potential product obsolescence, among others. Prior to regulatory approval, we expensed costs associated with the manufacture of a product candidate to research and development expense unless we are reasonably certain such costs have future commercial use and net realizable value. Since we consider attaining regulatory approval of a product candidate to be highly uncertain and difficult to predict, we expect only in rare instances that pre-launch inventory will be capitalized, if at all.

We began capitalizing inventory related to RYTELO in the quarter ended June 30, 2024, as we received approval of RYTELO on June 6, 2024, and the related costs were expected to be recoverable through the commercialization of RYTELO.

Cost of Goods Sold

Cost of goods sold includes the cost of producing and distributing inventories that are related to product revenue during the respective period, including salary related and stock-based compensation expense for employees involved with production and distribution, freight, and indirect overhead costs. Cost of goods sold may also include costs related to excess or obsolete inventory adjustment charges, abnormal costs, unabsorbed manufacturing and overhead costs, and manufacturing variances. For the twelve months ended December 31, 2024, other than packaging costs, substantially all of our RYTELO inventory sold had a zero-cost basis as it was recorded as research and development expenses prior to the FDA’s approval.

Research and Development Expenses

Research and development expenses currently consist of expenses incurred in developing and testing imetelstat and research related to potential next generation telomerase inhibitors. These expenses include, but are not limited to, payroll and personnel expense, lab supplies, non-clinical studies, clinical trials, including support for investigator-led clinical trials, raw materials to manufacture clinical trial drugs, manufacturing costs for research and clinical trial materials, sponsored research at other labs, consulting, costs to maintain technology licenses and research-related overhead.

Our current RYTELO (imetelstat) clinical trials are being supported by contract research organizations, or CROs, and other vendors. We accrue expenses for clinical trial activities performed and managed by CROs based upon the amount of work completed on each trial. Expenses are recorded based on contracted amounts agreed to with our CROs and through monthly reporting provided by CROs. We monitor activities conducted and managed by the CROs to the extent possible through internal reviews, review of contractual terms and correspondence with CROs. We record expense on the best information available at the time. However, additional information may become available to us which may require us to record adjustments to research and development expenses in future periods.

106

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Depreciation and Amortization

We record property and equipment at cost and calculate depreciation using the straight‑line method over the estimated useful lives of the assets, generally four years. Leasehold improvements are amortized over the shorter of the estimated useful life or remaining term of the lease.

Stock‑Based Compensation

We maintain various stock incentive plans under which stock options and restricted stock awards can be granted to employees, non-employee directors and consultants. We also have an employee stock purchase plan for all eligible employees. We recognize stock-based compensation expense based on grant-date fair values of service-based stock options on a straight-line basis over the requisite service period, which is generally the vesting period. For performance-based stock options with vesting based on the achievement of certain strategic milestones, stock-based compensation expense is recognized over the period from the date the performance condition is determined to be probable of occurring through the date the applicable condition is expected to be met and is reduced for estimated forfeitures, as applicable. If the performance condition is not considered probable of being achieved, no stock-based compensation expense is recognized until such time as the performance condition is considered probable of being met, if at all. If the assessment of probability of the performance condition changes, the impact of the change in estimate would be recognized in the period of the change. The determination of grant-date fair values for our service-based and performance-based stock options and employee stock purchases using the Black-Scholes option pricing model is affected by our stock price as well as assumptions regarding a number of complex and subjective variables. The grant-date fair value for service-based restricted stock or restricted stock unit awards is determined using the fair value of our common stock on the date of grant. We evaluate whether an adjustment to the assumptions of fair value of our common stock and historical volatility are required if observed prices of our common stock materially differ from historical information.

We measure share-based payments to non-employees based on the grant-date fair value of the equity awards to be issued. We recognize stock-based compensation expense for the fair value of the vested portion of non-employee stock-based awards on our consolidated statements of operations. For additional information, see Note 10 on Stockholders’ Equity.

Leases

At the inception of an arrangement, we determine whether the arrangement is or contains a lease based on the unique facts and circumstances present. Operating leases are included in operating leases, right-of-use assets and lease liabilities on our consolidated balance sheets. Right-of-use assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease liabilities and their corresponding right-of-use assets are recorded based on the present value of remaining lease payments over the expected lease term. The present value of remaining lease payments within the 12 months following the balance sheet date are classified as current lease liabilities. The present value of lease payments not within the 12 months following the balance sheet date are classified as noncurrent lease liabilities. The interest rate implicit in lease contracts is typically not readily determinable. As such, to calculate the net present value of lease payments, we apply our incremental borrowing rate, which is the estimated rate to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment as of the lease commencement date. We may adjust the right-of-use assets for certain adjustments, such as initial direct costs paid or incentives received. In addition, we include any options to extend or terminate the lease in the expected lease term when it is reasonably certain that we will exercise any such option. Lease expense is recognized on a straight-line basis over the expected lease term.

For lease agreements entered into after January 1, 2019 that include lease and non-lease components, such components are generally accounted for separately. We have also elected not to recognize on our consolidated balance sheets leases with terms of one year or less.

Debt Issuance Costs and Debt Discounts

Debt issuance costs include legal fees, accounting fees, and other direct costs incurred in connection with the execution of our debt financing. Debt discounts represent costs paid to the lenders. Debt issuance costs and debt discounts are deducted from the carrying amount of the debt liability and are amortized to interest expense over the term of the related debt using the effective interest method.

107

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Accumulated Other Comprehensive Gain (Loss)

Accumulated other comprehensive gain (loss) includes certain changes in stockholders’ equity which are excluded from net income (loss). Accumulated other comprehensive loss on our consolidated balance sheets as of December 31, 2024 and 2023, respectively, is comprised of net unrealized losses on marketable securities and cumulative translation adjustments.

Income Taxes

We maintain deferred tax assets and liabilities that reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes and are subject to tests of recoverability. Our deferred tax assets include net operating loss carryforwards, federal and state tax credits and capitalized research and development. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Our net deferred tax asset has been fully offset by a valuation allowance because of our history of losses. Any potential accrued interest and penalties related to unrecognized tax benefits would be recorded as income tax expense.

Segment Information

Our chief executive officer represents our chief operating decision maker. We view our operations as a single segment, the development of therapeutic products for oncology. As a result, the financial information disclosed herein materially represents all of the financial information related to our principal operating segment. For additional information, see Note 13 on Segment Reporting.

Recent Accounting Pronouncements

New Accounting Pronouncements – Issued But Not Yet Adopted

In December 2023, the Financial Standards Accounting Board (FASB) issued Accounting Standards Update (ASU) 2023-09, Income Taxes (ASU 2023-09), which requires issuers to make additional discloses on an annual basis related to specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold on an annual basis, disclose additional information about income taxes paid as well as other disaggregated disclosures. ASU 2023-09 is effective for the Company as of January 1, 2025 for annual periods. We are evaluating the impact of this ASU on our consolidated financial statements.

In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments in ASU 2024-03 address investor requests for more detailed expense information and require additional disaggregated disclosures in the notes to financial statements for certain categories of expenses that are included on the face of the income statement. This guidance is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. We are evaluating the impact of this ASU on our consolidated financial statements.

New Accounting Pronouncements – Issued and Adopted

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (ASU 2023-07), which requires issuers to make additional disclosures with respect to segment expenses, including required disclosure on an annual and interim basis for significant segment expenses and other segment items. The improved disclosure requirements apply to all public entities that are required to report segment information, including those with only one reportable segment. ASU 2023-07 also permits the disclosure of more than one measure of a segment’s profit or loss. ASU 2023-07 is effective for the Company as of January 1, 2024 for annual periods and as of January 1, 2025 for interim periods. We adopted the guidance in the annual period ended December 31, 2024. There was no impact on our reportable segments identified and additional required disclosures have been included in Note 13. We view our operations as a single segment. See Note 13 on Segment Reporting.

Other recent accounting pronouncements issued by the FASB did not or are not believed by management to have a material impact on our financial statements.

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2. REVENUE RECOGNITON

Net Product Revenue

To date, our only source of product revenue has been from the U.S. sales of RYTELO, which we began shipping to our customers in June 2024. The reconciliation of gross product sales to net product sales by each significant category of gross-to-net adjustments was as follows for the twelve months ended December 31, 2024:

| Twelve Months Ended |
| December 31, 2024 |
(in thousands) |
Gross product revenue | $ | 89,418 |
Gross-to-net adjustments: |  |
Chargebacks and distributor service fees |  | (11,772 | )
Government rebates |  | (926 | )
Sales returns and allowances |  | (225 | )
Total gross-to-net adjustments | $ | (12,923 | )
Net product revenue | $ | 76,495 |

3. INVENTORY

All of our inventories are related to the manufacturing of RYTELO. The following table presents our inventory as of December 31, 2024:

| As of December 31, 2024 |
(in thousands) |
Raw materials | $ | 4,904 |
Work-in-process |  | 30,093 |
Finished goods |  | 3,717 |
Total inventory | $ | 38,714 |

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4. FAIR VALUE MEASUREMENTS

Cash Equivalents, Restricted Cash and Marketable Securities

Cash equivalents, restricted cash and marketable securities by security type at December 31, 2024 were as follows:

|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
(In thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
Included in cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 45,215 |  |  | $ | — |  |  | $ | — |  |  | $ | 45,215 |
Commercial paper |  |  | 4,978 |  |  |  | — |  |  |  | (1 | ) |  |  | 4,977 |
|  | $ | 50,193 |  |  | $ | — |  |  | $ | (1 | ) |  | $ | 50,192 |
Restricted cash: |  |  |  |  |  |  |  |  |  |  |  |
Money market fund |  | $ | 1,587 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,587 |
Certificate of deposit |  |  | 273 |  |  |  | — |  |  |  | — |  |  |  | 273 |
|  | $ | 1,860 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,860 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities (due in less than one year) |  | $ | 7,937 |  |  | $ | 22 |  |  | $ | — |  |  | $ | 7,959 |
U.S. Treasury securities (due in one to two years) |  |  | 22,620 |  |  |  | 1 |  |  |  | (11 | ) |  |  | 22,610 |
Government-sponsored enterprise securities (due in less than one year) |  |  | 8,741 |  |  |  | 7 |  |  |  | — |  |  |  | 8,748 |
Commercial paper (due in less than one year) |  |  | 180,131 |  |  |  | 150 |  |  |  | (56 | ) |  |  | 180,225 |
Corporate notes (due in less than one year) |  |  | 130,361 |  |  |  | 284 |  |  |  | (27 | ) |  |  | 130,618 |
Corporate notes (due in one to two years) |  |  | 72,000 |  |  |  | 6 |  |  |  | (97 | ) |  |  | 71,909 |
|  | $ | 421,790 |  |  | $ | 470 |  |  | $ | (191 | ) |  | $ | 422,069 |

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Cash equivalents, restricted cash and marketable securities by security type at December 31, 2023 were as follows:

|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
(In thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
Included in cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 16,815 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,815 |
|  | $ | 16,815 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,815 |
Restricted cash: |  |  |  |  |  |  |  |  |  |  |  |
Money market fund |  | $ | 843 |  |  | $ | — |  |  | $ | — |  |  | $ | 843 |
Certificate of deposit |  |  | 272 |  |  |  | — |  |  |  | — |  |  |  | 272 |
|  | $ | 1,115 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,115 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities (due in less than one year) |  | $ | 26,752 |  |  | $ | 95 |  |  | $ | — |  |  | $ | 26,847 |
U.S. Treasury securities (due in one to two years) |  |  | 2,877 |  |  |  | 17 |  |  |  | — |  |  |  | 2,894 |
Government-sponsored enterprise securities (due in less than one year) |  |  | 86,250 |  |  |  | 43 |  |  |  | (92 | ) |  |  | 86,201 |
Government-sponsored enterprise securities (due in one to two years) |  |  | 13,598 |  |  |  | 72 |  |  |  | — |  |  |  | 13,670 |
Commercial paper (due in less than one year) |  |  | 102,270 |  |  |  | 31 |  |  |  | (33 | ) |  |  | 102,268 |
Corporate notes (due in less than one year) |  |  | 48,409 |  |  |  | 14 |  |  |  | (63 | ) |  |  | 48,360 |
Corporate notes (due in one to two years) |  |  | 26,628 |  |  |  | 130 |  |  |  | (24 | ) |  |  | 26,734 |
|  | $ | 306,784 |  |  | $ | 402 |  |  | $ | (212 | ) |  | $ | 306,974 |

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Cash equivalents and marketable securities with unrealized losses that have been in a continuous unrealized loss position for less than 12 months and 12 months or longer at December 31, 2024 and 2023 were as follows:

|  | Less Than 12 Months |  |  | 12 Months or Greater |  |  | Total |
|  |  |  |  | Gross |  |  |  |  |  | Gross |  |  |  |  |  | Gross |
|  | Estimated |  |  | Unrealized |  |  | Estimated |  |  | Unrealized |  |  | Estimated |  |  | Unrealized |
(In thousands) |  | Fair Value |  |  | Losses |  |  | Fair Value |  |  | Losses |  |  | Fair Value |  |  | Losses |
As of December 31, 2024: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities (due in less than one year) |  | $ | 18,593 |  |  | $ | (10 | ) |  | $ | — |  |  | $ | — |  |  | $ | 18,593 |  |  | $ | (10 | )
Commercial paper (due in less than one year) |  |  | 66,076 |  |  |  | (56 | ) |  |  | — |  |  |  | — |  |  |  | 66,076 |  |  |  | (56 | )
Corporate notes (due in less than one year) |  |  | 31,549 |  |  |  | (26 | ) |  |  | 1,993 |  |  |  | (1 | ) |  |  | 33,542 |  |  |  | (27 | )
Corporate notes (due in one to two years) |  |  | 53,506 |  |  |  | (98 | ) |  |  | — |  |  |  | — |  |  |  | 53,506 |  |  |  | (98 | )
|  | $ | 169,724 |  |  | $ | (190 | ) |  | $ | 1,993 |  |  | $ | (1 | ) |  | $ | 171,717 |  |  | $ | (191 | )
As of December 31, 2023: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government-sponsored enterprise securities (due in less than one year) |  | $ | 69,377 |  |  | $ | (92 | ) |  | $ | — |  |  | $ | — |  |  | $ | 69,377 |  |  | $ | (92 | )
Commercial paper (due in less than one year) |  |  | 58,622 |  |  |  | (33 | ) |  |  | — |  |  |  | — |  |  |  | 58,622 |  |  |  | (33 | )
Corporate notes (due in less than one year) |  |  | 34,567 |  |  |  | (63 | ) |  |  | — |  |  |  | — |  |  |  | 34,567 |  |  |  | (63 | )
Corporate notes (due in one to two years) |  |  | 3,952 |  |  |  | (23 | ) |  |  | — |  |  |  | — |  |  |  | 3,952 |  |  |  | (23 | )
|  | $ | 166,518 |  |  | $ | (211 | ) |  | $ | — |  |  | $ | — |  |  | $ | 166,518 |  |  | $ | (211 | )

The gross unrealized losses related to U.S. Treasury securities, municipal securities, government-sponsored enterprise securities, commercial paper and corporate notes as of December 31, 2024 and 2023 were due to changes in interest rates and not credit risk. If an available-for-sale security’s fair value is less than its amortized cost basis, we evaluate whether the decline is the result of a credit loss, in which case an impairment is recorded through an allowance for credit losses. We have not recorded any allowances for credit losses on our available-for-sale securities for the years ended December 31, 2024 and 2023 as we have not identified any unrealized losses for these securities attributable to credit factors. Our exposure to unrealized losses may increase in the future due to the economic pressures or uncertainties associated with local or global economic recessions as a result of ongoing geopolitical events, such as the current military conflict between Ukraine and Russia, as well as recent and potential future disruptions in access to bank deposits or lending commitments due to bank failure. We do not intend to sell the investments and it is not more likely that not that we will be required to sell the investments before recovery of their amortized cost basis, which may be maturity.

Fair Value on a Recurring Basis

We categorize financial instruments recorded at fair value on our consolidated balance sheets based upon the level of judgment associated with inputs used to measure their fair value. The categories are as follows:

| Level 1 | — | Inputs are unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date. An active market for the asset or liability is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.
| Level 2 | — | Inputs (other than quoted market prices included in Level 1) are either directly or indirectly observable for the asset or liability through correlation with market data at the measurement date and for the duration of the instrument’s anticipated life.

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| Level 3 | — | Inputs reflect management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date. Consideration is given to the risk inherent in the valuation technique and the risk inherent in the inputs to the model.

A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Below is a description of the valuation methodologies used for financial instruments measured at fair value on our consolidated balance sheets, including the category for such financial instruments.

Money market funds and certificates of deposit are categorized as Level 1 within the fair value hierarchy as their fair values are based on quoted prices available in active markets. Commercial paper, U.S. Treasury securities, municipal securities, government-sponsored enterprise securities and corporate notes are categorized as Level 2 within the fair value hierarchy as their fair values are estimated by using pricing models, quoted prices of securities with similar characteristics or discounted cash flows.

The embedded derivatives are classified within Level 3 of the fair value hierarchy. See Note 9 on Debt.

Liability Related to the Sale of Future Royalties

We determined the fair value of the liability related to the sale of future royalties based on our current estimates of future royalties expected to be paid to Royalty Pharma over the life of the arrangement, which are considered Level 3. See Note 9 on Debt.

There were no transfers between Level 1, Level 2, and Level 3 during the periods presented.

The following table presents information about our financial instruments that are measured at fair value on a recurring basis as of December 31, 2024 and 2023 and indicates the fair value category assigned.

|  | Fair Value Measurements at Reporting Date Using |
(In thousands) |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
As of December 31, 2024: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds(1)(2) |  | $ | 46,802 |  |  | $ | — |  |  | $ | — |  |  | $ | 46,802 |
Certificate of deposit(2) |  |  | 273 |  |  |  | — |  |  |  | — |  |  |  | 273 |
U.S. Treasury securities(3)(4) |  |  | — |  |  |  | 30,570 |  |  |  | — |  |  |  | 30,570 |
Government-sponsored enterprise securities(3) |  |  | — |  |  |  | 8,748 |  |  |  | — |  |  |  | 8,748 |
Commercial paper(3) |  |  | — |  |  |  | 185,201 |  |  |  | — |  |  |  | 185,201 |
Corporate notes(3)(4) |  |  | — |  |  |  | 202,527 |  |  |  | — |  |  |  | 202,527 |
Total |  | $ | 47,075 |  |  | $ | 427,046 |  |  | $ | — |  |  | $ | 474,121 |
As of December 31, 2023: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds(1)(2) |  | $ | 17,658 |  |  | $ | — |  |  | $ | — |  |  | $ | 17,658 |
Certificate of deposit(2) |  |  | 272 |  |  |  | — |  |  |  | — |  |  |  | 272 |
U.S. Treasury securities(3)(4) |  |  | — |  |  |  | 29,742 |  |  |  | — |  |  |  | 29,742 |
Government-sponsored enterprise securities(3)(4) |  |  | — |  |  |  | 99,872 |  |  |  | — |  |  |  | 99,872 |
Commercial paper(3) |  |  | — |  |  |  | 102,268 |  |  |  | — |  |  |  | 102,268 |
Corporate notes(3)(4) |  |  | — |  |  |  | 75,092 |  |  |  | — |  |  |  | 75,092 |
Total |  | $ | 17,930 |  |  | $ | 306,974 |  |  | $ | — |  |  | $ | 324,904 |

(1)
Included in cash and cash equivalents on our consolidated balance sheets.
(2)
Included in restricted cash on our consolidated balance sheets.
(3)
Included in current portion of marketable securities on our consolidated balance sheets.
(4)
Included in noncurrent portion of marketable securities on our consolidated balance sheets.

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Credit Risk

We currently place our cash, restricted cash, cash equivalents and marketable securities with multiple institutions in the United States. Generally, these deposits may be redeemed upon demand and therefore, bear minimal risk. Deposits with banks may exceed the amount of insurance provided on such deposits. Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash equivalents and marketable securities. Cash equivalents and marketable securities currently consist of money market funds, government-sponsored enterprise securities, U.S. Treasury securities, municipal securities, commercial paper and corporate notes. Our investment policy, approved by the audit committee of our board of directors, limits the amount we may invest in any one type of investment issuer, thereby reducing credit risk concentrations. However, we are exposed to credit risk in the event of default by the financial institutions holding our cash and cash equivalents to the extent recorded in our consolidated balance sheets. We have not experienced any losses in such accounts and we believe that we are not exposed to significant credit risk of our financial position at the depository institutions in which those deposits are held. As of December 31, 2024 four customers accounted for 100% of our gross accounts receivable: McKesson Financial Center, which accounted for 43% of our gross accounts receivable; ASD Specialty Healthcare LLC, which accounted for 38% of our gross accounts receivable; Cardinal Health Inc., which accounted for 17% of our gross accounts receivable; and Sina Drug, which accounted for 2% of our gross accounts receivable.

5. PROPERTY AND EQUIPMENT

Property and equipment, stated at cost, is comprised of the following:

|  | December 31, |
(In thousands) |  | 2024 |  |  | 2023 |
Furniture and computer equipment |  | $ | 2,878 |  |  | $ | 2,273 |
Leasehold improvements |  |  | 129 |  |  |  | 135 |
|  |  | 3,007 |  |  |  | 2,408 |
Less accumulated depreciation and amortization |  |  | (1,697 | ) |  |  | (1,231 | )
|  | $ | 1,310 |  |  | $ | 1,177 |

6. ACCRUED LIABILITIES

Accrued liabilities consisted of the following:

|  | December 31, |
(In thousands) |  | 2024 |  |  | 2023 |
CRO and clinical trial costs |  | $ | 18,968 |  |  | $ | 23,541 |
Manufacturing activities |  |  | 11,839 |  |  |  | 14,629 |
Professional legal and accounting fees |  |  | 475 |  |  |  | 556 |
Interest payable |  |  | 2,186 |  |  |  | 768 |
Other |  |  | 2,081 |  |  |  | 814 |
|  | $ | 35,549 |  |  | $ | 40,308 |

7. COMMITMENTS AND CONTINGENCIES

Purported Securities Lawsuits

We are not currently a party to any material pending legal proceedings. However, in 2020, three securities class action lawsuits were filed against us and certain of our officers. One of the lawsuits was voluntarily dismissed, and final judgment with respect to the other two lawsuits was entered in October 2023. In 2020 and 2021, seven shareholder derivative actions were filed in a number of courts, naming as defendants certain of our then current officers and certain of our then current and former members of our board. All seven of the shareholder derivative actions were dismissed with prejudice. There is no liability outstanding with respect to these lawsuits as of December 31, 2024, because they were fully settled during the year ended December 31, 2023.

While we have settled these lawsuits, it is possible that additional lawsuits might be filed, or allegations might be received from stockholders, with respect to these same or other matters and also naming us and/or our officers and directors as defendants. Such lawsuits and any other related lawsuits are subject to inherent uncertainties, and the actual defense and disposition costs will depend upon many unknown factors. We could be forced to expend

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significant resources in the defense of any additional lawsuits, and we may not prevail. Monitoring, initiating and defending against legal actions is time-consuming for our management, is likely to be expensive and may detract from our ability to fully focus our internal resources on our business activities. We could be forced to expend significant resources in any potential future lawsuits, and we may not prevail in such lawsuits. Additionally, we may not be successful in having any such lawsuits dismissed or settled within the limits of our insurance coverage. Expenses associated with any potential future lawsuits could be material to our consolidated financial statements if we do not prevail in the defense of such lawsuits, or even if we do prevail. We have not established any reserve for any potential liability relating to any potential future lawsuits. It is possible that we could, in the future, incur judgments or enter into settlements of claims for monetary damages.

Indemnifications to Officers and Directors

Our corporate bylaws require that we indemnify our directors, as well as those who act as directors and officers of other entities at our request, against expenses, judgments, fines, settlements and other amounts actually and reasonably incurred in connection with any proceedings arising out of their services to Geron. In addition, we have entered into separate indemnification agreements with each of our directors and officers which provide for indemnification of these directors and officers under similar circumstances and under additional circumstances. The indemnification obligations are more fully described in our bylaws and the indemnification agreements. We purchase standard insurance to cover claims or a portion of the claims made against our directors and officers. Since a maximum obligation is not explicitly stated in our bylaws or in our indemnification agreements and will depend on the facts and circumstances that arise out of any future claims, the overall maximum amount of the obligations cannot be reasonably estimated.

Severance Plan

We have adopted two severance plans that apply to all of our employees who are not subject to performance improvement plans, one plan covering employees above the Senior Vice President level, i.e., executives, and all other employees hired before January 1, 2022, and the other plan covering all non-executive employees hired on or after January 1, 2022. The severance plans provide for, among other benefits: (i) a severance payment upon a Change of Control Triggering Event and Separation from Service and (ii) a severance payment for each non‑executive employee upon a Non‑Change of Control Triggering Event and Separation from Service. As defined in the severance plans, a Change of Control Triggering Event and Separation from Service requires a “double trigger” where: (i) an employee is terminated by us without cause in connection with a change of control or within 12 months following a change of control provided, however, that if an employee is terminated by us in connection with a change of control but immediately accepts employment with our successor or acquirer, the employee will not be eligible for the benefits outlined in the plans, (ii) an employee resigns because in connection with a change of control, the offered terms of employment (new or continuing) by us or our successor or acquirer within 30 days after the change of control results in a material change in the terms of employment, or (iii) after accepting (or continuing) employment with us after a change of control, an employee resigns within 12 months following a change of control due to a material change in the terms of employment. Under the severance plans, a Non‑Change of Control Triggering Event and Separation from Service is defined as an event where an employee is terminated by us without cause. Severance payments range from three to 18 months of base salary in connection with a Change of Control Triggering Event or from six weeks to 12 months of base salary in connection with a Non-Change of Control Triggering Event, as well as a pro-rata portion of the employee’s annual target bonus, depending on the employee’s position with us, payable in a lump sum payment, and monthly COBRA payments for the severance period. The severance plans also provide that they shall not supersede the provisions of any individual employment agreements entered into between us and our employees, and that the employees with such agreements will be entitled to whichever benefits are greater under the severance plan or their employment agreement. A copy of the severance plan covering our executive officers is filed as an exhibit to this Report. As of December 31, 2024, all our executive officers have employment agreements with severance provisions and will receive the greater severance benefits of their agreements or those in the severance plan applicable to them.

8. OPERATING LEASES

New Jersey Office Space Lease

In April 2019, we entered into an operating lease agreement for office space located at 3 Sylvan Way, Parsippany, New Jersey, or the New Jersey Lease. The initial term of the New Jersey Lease is 11 years with an

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option to extend for an additional five years and a one-time option to terminate the New Jersey Lease without cause as of the 103rd month anniversary of the commencement date of the lease. The New Jersey Lease commenced on October 1, 2019, upon our control of the office space on that date. Based on the initial term of the New Jersey Lease of 11 years, the right-of-use asset and corresponding operating lease liability was approximately $2.4 million, which represented the present value of lease payments over the initial lease term, net of a seven-month rent abatement period, using an incremental borrowing rate of 8% based on information available as of October 1, 2019. As of December 31, 2024, the New Jersey Lease makes up $1.4 million of our total right-of-use asset balance. Under the New Jersey Lease, we are also obligated to pay certain variable expenses separately from the base rent, including electricity and common area maintenance. Such costs are being expensed in the period they are incurred. As of December 31, 2024, the remaining lease term for the New Jersey Lease is 5.8 years.

California Office Space Lease

In October 2019, we entered into an operating lease agreement for office space located at 919 East Hillsdale Boulevard, Foster City, California, or the Foster City Lease. The initial term of the Foster City Lease is 87 months with an option to extend for an additional five years.

The Foster City Lease commenced on March 10, 2020, upon the substantial completion of all tenant improvements. As of the lease commencement date, the right-of-use asset and corresponding operating lease liability was approximately $3.4 million, which represented the present value of remaining lease payments using an incremental borrowing rate of 7% over the initial lease term of 87 months, net of a three-month rent abatement period. As of December 31, 2024, the Foster City Lease makes up $1.4 million of our total right-of-use asset balance. Under the Foster City Lease, we are also obligated to pay certain variable expenses separately from the base rent, including taxes and common area maintenance. Such costs are considered non-lease components and have been excluded from the calculation of the right-of-use asset and corresponding operating lease liability and are being expensed in the period they are incurred. As of December 31, 2024, the remaining lease term for the Foster City Lease is 2.5 years.

The components of lease costs included in operating expenses on our consolidated statements of operations for the New Jersey Lease, and the Foster City Lease were as follows:

|  | Year Ended December 31, |
(In thousands) |  | 2024 |  |  | 2023 |  |  | 2022 |
Operating lease costs | $ | 987 |  |  | $ | 962 |  |  | $ | 944 |
Variable lease costs (1) |  | 261 |  |  |  | 344 |  |  |  | 310 |
Total lease costs | $ | 1,248 |  |  | $ | 1,306 |  |  | $ | 1,254 |

(1)
Variable lease costs represent non-lease components, such as common area maintenance charges.

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The undiscounted future non-cancellable lease payments under the New Jersey Lease and the Foster City Lease as of December 31, 2024 were as follows (in thousands):

2025 |  | $ | 1,014 |
2026 |  |  | 1,040 |
2027 |  |  | 716 |
2028 |  |  | 376 |
2029 |  |  | 383 |
Thereafter |  |  | 292 |
Total lease payments |  | 3,821 |
Less: imputed interest |  | (581 | )
Total |  | $ | 3,240 |

9. DEBT

Hercules Loan Agreement

On September 30, 2020, we, Hercules Capital, Inc., or Hercules, and Silicon Valley Bank, or SVB, entered into a term loan facility, or the Term Loan, for up to $75.0 million, which was amended in August 2021, or the Original Loan Agreement. On June 30, 2022, we entered into a second amendment to the Original Loan Agreement. Under the second amendment, the aggregate principal amount available to us increased from $75.0 million to $125.0 million, with such principal being available in a series of tranches, subject to certain terms and conditions. Over the course of the Term Loan, we had drawn down a total of $80.0 million.

All obligations outstanding under the Hercules Loan Agreement, amounting to $86.5 million, were repaid in full on November 1, 2024, upon which the Hercules Loan Agreement was terminated and all liens on our assets granted in connection with the Hercules Loan Agreement were released.

Pharmakon Loan Agreement

On November 1, 2024, we entered into a loan agreement, or the Pharmakon Loan Agreement, with BioPharma Credit Investments V (Master) LP and BPCR Limited Partnership, each, a Lender, which are investment funds managed by Pharmakon Advisors, LP, and BioPharma Credit PLC, as collateral agent, that provides for a 5-year senior secured term loan facility of up to $250.0 million, divided into three committed tranches: (i) a Tranche A Loan in an aggregate principal amount of $125.0 million, or the Tranche A Loan, which was funded on November 1, 2024, or the Tranche A Closing Date; (ii) a Tranche B Loan in an aggregate principal amount of $75.0 million, or the Tranche B Loan, which is available, subject to certain limited conditions, at our option; and (iii) a Tranche C Loan in an aggregate principal amount of $50.0 million, or the Tranche C Loan, and together with the Tranche A Loan and the Tranche B Loan, collectively, the Term Loans, which is available to us upon reaching a specified trailing twelve-month RYTELO revenue milestone. The Tranche B Loan and the Tranche C Loan, once available, may be requested on or prior to December 31, 2025. A portion of the proceeds from the Tranche A Loan were used to repay, in full, all amounts owed under the Hercules Loan Agreement, which was terminated effective November 1, 2024. The remaining proceeds will be used to fund our general corporate and working capital requirements.

The Term Loans mature on November 1, 2029. The Term Loans bear interest at a variable rate per annum equal to 5.75% plus the three-month Secured Overnight Financing Rate, or SOFR, with a SOFR floor of 3.00%. As of inception of the Tranche A Loan, the interest rate applicable to the Tranche A Loan was 10.32%. Interest is due and payable quarterly on the last day of each quarter with the first payment due on December 31, 2024. The Pharmakon Loan Agreement requires we pay an amount equal to 2.50% of the Lenders’ total committed amount to fund the Term Loans, payable with respect to each Term Loan on the funding date of such Term Loan.

We may elect to prepay the Term Loans in part or in whole prior to the Maturity Date with such prepayments being subject to a prepayment premium equal to the principal amount so prepaid multiplied by 3% if made prior to the 3rd anniversary of the funding date of the applicable Term Loan, 2% if made on or after the 3rd anniversary of the funding date of the applicable Term Loan but prior to the 4th anniversary of the funding date of the applicable Term Loan, and 1% if made on or after the 4th anniversary of the funding date of the applicable Term Loan but prior to the Maturity Date. In addition to the prepayment premium, prepayments of any Term Loan prior to the 2nd anniversary of the funding date of such Term Loan are subject to a make-whole amount equal to the sum of all interest that would have accrued through such 2nd anniversary.

117

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Our obligations under the Pharmakon Loan Agreement are secured by substantially all of our assets, including our intellectual property. Certain of our subsidiaries may, from time to time after the Tranche A Closing Date, be required to guarantee our obligations under the Pharmakon Loan Agreement and, in connection with such guarantee, pledge substantially all of their assets, including intellectual property, to secure such guarantee.

The Pharmakon Loan Agreement contains customary affirmative and restrictive covenants and representations and warranties. We and our subsidiaries are bound by certain affirmative covenants setting forth actions that are required during the term of the Pharmakon Loan Agreement, including, without limitation, certain information delivery requirements, obligations to maintain certain insurance, and certain notice requirements. There are no financial covenants. Additionally, we and our subsidiaries are bound by certain restrictive covenants setting forth actions that are not permitted to be taken during the term of the Pharmakon Loan Agreement, including, without limitation, (i) selling or disposing of assets, (ii) amending, modifying or waiving our rights under material agreements, (iii) consummating change in control transactions unless all amounts becoming due under the Loan Agreement are paid in full immediately upon (and concurrent with) the consummation of any such change in control transaction, (iv) incurring additional indebtedness, (v) incurring non-permitted liens or encumbrance on our or our subsidiaries’ assets, (vi) paying dividends or making any distribution or payment on or redeeming, retiring or purchasing any equity interests, and (vii) making payments on subordinated indebtedness, in each case, subject to specified exceptions. The Pharmakon Loan Agreement also contains the following events of default: (i) failure to pay principal, interest and other amounts when due, (ii) the breach of the covenants under the Loan Agreement, (iii) the occurrence of a material adverse change or the occurrence of a withdrawal event in respect of RYTELO, (iv) certain attachments of the credit parties assets and restraints on their business, (v) certain insolvency, liquidation, bankruptcy or similar events, (vi) certain cross-default of third-party indebtedness and royalty revenue contracts, (vii) the failure to pay certain judgements, (viii) material misrepresentations, (ix) the loan documents ceasing to create a valid security interest in a material portion of the collateral, (x) the occurrence of certain ERISA events and (xi) the occurrence of a default under any subordination or intercreditor agreement, in each case subject to the grace periods, cure period and thresholds as specified in the Pharmakon Loan Agreement. Upon the occurrence and during the continuance of an event of default, the Lenders may, among other things, accelerate our obligations under the Pharmakon Loan Agreement (including all obligations for principal, interest and any applicable make-whole and prepayment premiums); provided that upon an event of default relating to certain insolvency, liquidation, bankruptcy or similar events, all outstanding obligations will be immediately accelerated.

Future Minimum Payments

The following table presents future minimum payments, including interest and the end of term charge, under the Term Loan as of December 31, 2024 (in thousands):

2024 |  | $ | 2,186 |
2025 |  |  | 13,081 |
2026 |  |  | 13,081 |
2027 |  |  | 13,081 |
2028 |  |  | 13,116 |
Thereafter |  |  | 135,930 |
Total |  | 190,475 |
Less: amount representing interest |  | (65,474 | )
Less: unamortized debt discount and issuance costs |  | (6,525 | )
Noncurrent portion of debt | $ | 118,476 |

Liabilities Related to Sale of Future Royalties

On November 1, 2024, we entered into a revenue participation right purchase and sale agreement, or the Royalty Pharma Agreement, with Royalty Pharma Development Funding, LLC, or Royalty Pharma. Pursuant to the Royalty Pharma Agreement, we received an upfront payment of $125.0 million, or the Purchase Price, in exchange for which Royalty Pharma obtained the right, or the Revenue Participation Right, to receive certain amounts calculated as a percentage of future U.S. net sales of RYTELO for each calendar quarter, or Royalty Payments, during the term contemplated by the Royalty Pharma Agreement. Specifically, the revenue participation rate commences at 7.75% for annual U.S. net sales of up to and equal to $500.0 million declining to 1.0% for annual U.S. net sales exceeding $1.0 billion until the date when the aggregate Royalty Payments equal or exceed 1.65 times the Purchase Price, if this occurs by June 30, 2031 or the date when the aggregate Royalty Payments equal or exceed 2.0 times the Purchase Price.

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GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In addition, we had the option to repurchase all of the Revenue Participation Right from Royalty Pharma for a purchase price of equal to the Buy-Out-Payment, as defined below, if we entered into a definitive agreement to consummate a change of control, or Buy-Back Option.

“Buy-Out Payment” means an amount equal to (a) 1.65 times the Purchase Price minus the aggregate Royalty Payments as of the change of control, if the change of control occurs on or prior to December 31, 2027, or (b) 2.0 times the Purchase Price minus the aggregate Royalty Payments as of the change of control, if the change of control occurs after December 31, 2027.

We accounted for the Royalty Pharma Agreement as a financing liability, primarily because it has significant continuing involvement in generating the future revenue on which the Royalty Payments are based. The liability related to Revenue Participation Right and the related interest expense are measured based on our current estimate of the timing and amount of expected future Royalty Payments expected to be paid over the estimated term of the Royalty Pharma Agreement using a discounted cash flow model. The liability is amortized using the effective interest rate method, resulting in recognition of interest expense over the estimated term of the agreement.

We have determined the fair value of the liability related to the sale of future royalties is based on our current estimates of future royalties expected to be paid to Royalty Pharma over the life of the arrangement, which are considered Level 3.

The carrying value of the liabilities related to sale of future revenues as of December 31, 2024 is $124.8 million and we recognized $5.3 million in non-cash interest expense in the twelve months ended December 31, 2024 related to the Royalty Pharma Agreement.

The following table shows the activity within the liability related to sale of future royalties during the year ended December 31, 2024.

|  | Liability Related to Sale of Future Royalties |
(in thousands) |
Carrying value of liability related to sale of future royalties at November 1, 2024 |  | $ | 121,634 |
Interest expense recognized |  |  | 5,345 |
Royalty payments |  |  | (2,186 | )
Carrying value of liability related to sale of future royalties at December 31, 2024 |  | $ | 124,793 |

Embedded Derivatives and Debt Discounts

The conditional exercisable call option related to the event of default is considered to be an embedded derivative which is required to be bifurcated and accounted for as a separate financial instrument. In the periods presented, the value of the embedded derivative is not material and therefore, no amount has been recognized. If an event of default becomes more probable than is currently estimated, then the embedded derivative could become material in future periods and would be recognized as a separate financial instrument at that time. The embedded derivatives are classified within Level 3 of the fair value hierarchy due to the use of significant unobservable inputs.

10. STOCKHOLDERS’ EQUITY

Authorized Common Stock

In May 2023 our stockholders approved an amendment to our Restated Certificate of Incorporation to increase the total number of authorized shares of common stock from 675,000,000 to 1,350,000,000 shares.

Public Offerings

On April 1, 2022, we completed an underwritten public offering of 53,333,334 shares of our common stock and a pre-funded warrant to purchase 18,095,238 shares of our common stock, or the 2022 pre-funded warrant, together with accompanying warrants to purchase 35,714,286 shares of our common stock, also known as the 2022 stock purchase warrants. The shares of common stock and the 2022 pre-funded warrant were immediately separable from the 2022 stock purchase warrants. All of the securities were issued separately. The combined public offering

119

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

price of the common stock and accompanying 2022 stock purchase warrants was $1.05 per share. The 2022 stock purchase warrants have an exercise price of $1.45 per share and are exercisable immediately. The term of the 2022 stock purchase warrants expired in the third quarter of 2023, pursuant to the terms of the warrant agreement. The combined public offering price of the 2022 pre-funded warrant and accompanying 2022 stock purchase warrant was $1.049 per share. The 2022 pre-funded warrant has an exercise price of $0.001 per share and may be exercised at any time until the 2022 pre-funded warrant is exercised in full. As of December 31, 2024, none of the 2022 pre-funded warrant and all of the 2022 stock purchase warrants have been exercised. The net cash proceeds from this offering were $69.9 million, after deducting the underwriting discount and other offering expenses paid by us, and exclude any future proceeds from the exercise of the 2022 pre-funded warrant and 2022 stock purchase warrants.

Upon the issuance of the 2022 pre-funded warrant and 2022 stock purchase warrants, we evaluated the terms of each warrant to determine the appropriate accounting and classification pursuant to FASB Accounting Standards Codification Topic 480, Distinguishing Liabilities from Equity, and FASB Accounting Standards Codification Topic 815, Derivatives and Hedging. Warrants are classified as liabilities when the warrant terms allow settlement of the warrant exercise in cash and classified as equity when the warrant terms only allow settlement in shares of common stock. The terms of the 2022 pre-funded warrant and the 2022 stock purchase warrants include certain provisions related to fundamental transactions and a cashless exercise provision in the event registered shares are not available, and do not include any mandatory redemption provisions. Based on our evaluation, we concluded the 2022 pre-funded warrant and the 2022 stock purchase warrants should be classified as equity with no subsequent remeasurement as long as such warrants continue to be classified as equity.

On January 10, 2023 we completed an underwritten public offering consisting of 68,007,741 shares of our common stock and the 2023 pre-funded warrant. All of the securities were issued separately. The public offering price of the common stock was $2.45 per share. The public offering price of the 2023 pre-funded warrant was $2.449 per share. The 2023 pre-funded warrant has an exercise price of $0.001 per share and may be exercised at any time until the 2023 pre-funded warrant is exercised in full. As of December 31, 2024, none of the 2023 pre-funded warrant has been exercised. The net cash proceeds from this offering were $213.3 million, after deducting the underwriting discount and other offering expenses paid by us, and exclude any future proceeds from the exercise of the 2023 pre-funded warrant.

Upon the issuance of the 2023 pre-funded warrant, we evaluated the warrant terms to determine the appropriate accounting and classification pursuant to FASB Accounting Standards Codification Topic 480, Distinguishing Liabilities from Equity, and FASB Accounting Standards Codification Topic 815, Derivatives and Hedging. Warrants are classified as liabilities when the warrant terms allow settlement of the warrant exercise in cash and classified as equity when the warrant terms only allow settlement in shares of common stock. The terms of the 2023 pre-funded warrant include certain provisions related to fundamental transactions and a cashless exercise provision in the event registered shares are not available, and do not include any mandatory redemption provisions. Based on our evaluation, we concluded the 2023 pre-funded warrant should be classified as equity with no subsequent remeasurement as long as such warrant continue to be classified as equity.

On March 21, 2024, we completed an underwritten public offering of 41,999,998 shares of our common stock and a pre-funded warrant to purchase 8,002,668 shares of our common stock, or the 2024 pre-funded warrant. All of the securities were issued separately. The public offering price of the common stock was $3.00 per share. The public offering price of the 2024 pre-funded warrant was $2.99 per share. The 2024 pre-funded warrant has an exercise price of $0.001 per share and may be exercised at any time until the 2024 pre-funded warrant is exercised in full. As of December 31, 2024, none of the 2024 pre-funded warrant has been exercised. The net cash proceeds from the March 2024 offering were approximately $141.0 million, after deducting the underwriting discount and other offering expenses paid by us, and excluding any future proceeds from the exercise of the pre-funded warrant.

Upon the issuance of the 2024 pre-funded warrant, we evaluated the warrant terms to determine the appropriate accounting and classification pursuant to FASB Accounting Standards Codification Topic 480, Distinguishing Liabilities from Equity, and FASB Accounting Standards Codification Topic 815, Derivatives and Hedging. Warrants are classified as liabilities when the warrant terms allow settlement of the warrant exercise in cash and classified as equity when the warrant terms only allow settlement in shares of common stock. The terms of the 2024 pre-funded warrant include certain provisions related to fundamental transactions and a cashless exercise provision in the event registered shares are not available, and do not include any mandatory redemption provisions. Based on our evaluation, we concluded the 2024 pre-funded warrant should be classified as equity with no subsequent remeasurement as long as such warrant continue to be classified as equity.

120

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Warrant Exercises

For the year ended December 31, 2024, warrants to purchase 1,071,981 shares of our common stock were exercised for net cash proceeds of approximately $1.4 million. The warrants were issued in connection with underwritten public offerings of common stock and pre-funded warrants, together with accompanying stock purchase warrants in May 2020, April 2022, and January 2023. As of December 31, 2024, the following warrants remained outstanding:

•
pre-funded warrants with an exercise price of $0.001 per share to purchase 59,433,145 shares of our common stock, which have no expiration date; and
•
stock purchase warrants with an exercise price of $1.30 per share to purchase 1,402,522 shares of our common stock related to the public offering of our common stock in May 2020, which expire on December 31, 2025.

For the year ended December 31, 2023, warrants to purchase 77,349,859 shares of our common stock were exercised for net cash proceeds of approximately $105.9 million The warrants were issued in connection with an underwritten public offering of common stock and a pre-funded warrant, together with accompanying stock purchase warrants in May 2020. As of December 31, 2023, the pre-funded warrant to purchase 51,430,477 shares of our common stock was outstanding and stock purchase warrants to purchase 2,474,503 shares of our common stock associated with the May 2020 public offering remained outstanding.

Sales Agreement

On November 1, 2023, we entered into an At Market Issuance Sales Agreement, or the 2023 Sales Agreement with B. Riley, pursuant to which we may issue and sell shares of our common stock having an aggregate offering price of up to $100 million from time to time through B. Riley as the sales agent. We have agreed to pay B. Riley an aggregate commission rate equal to up to 3.0% of the gross proceeds of the sales price per share for common stock sold through B. Riley under the 2023 Sales Agreement. The 2023 Sales Agreement will automatically terminate upon the earlier of (i) the sale of all common stock subject to the 2023 Sales Agreement, or (ii) termination of the 2023 Sales Agreement in accordance with its terms.

No shares of our common stock were sold pursuant to the 2023 Sales Agreement during the year ended December 31, 2024.

Equity Plans

2011 Incentive Award Plan

In May 2011, our stockholders approved the adoption of the 2011 Incentive Award Plan, or 2011 Plan. The 2011 Plan provided for grants of either incentive stock options or nonstatutory stock options and stock purchase rights to employees (including officers and employee directors) and consultants (including non‑employee directors). Upon the adoption of the 2018 Equity Incentive Plan in May 2018 (see below), no further grants of stock options or stock purchase rights were made under the 2011 Plan. Stock options granted under the 2011 Plan expire no later than ten years from the date of grant. Stock option exercise prices were equal to the fair market value of the underlying common stock on the date of grant.

Service‑based stock options under the 2011 Plan generally vested over a period of four years from the date of grant. Other stock awards (restricted stock awards and restricted stock units) had variable vesting schedules which were determined by our board of directors on the date of grant. All outstanding awards granted under the 2011 Plan remain subject to the terms of the 2011 Plan and the individual award agreements thereunder.

2018 Equity Incentive Plan

On May 15, 2018, our stockholders approved the adoption of the 2018 Equity Incentive Plan, or 2018 Plan, as the successor to the 2011 Plan. The 2018 Plan provides for the grant of incentive stock options, nonstatutory stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, other stock awards, and performance awards that may be settled in cash, stock, or other property. Eligible participants under the 2018 Plan include our employees, consultants and non-employee directors. The number of shares reserved for issuance under the 2018 Plan (subject to adjustment for certain changes in capitalization) is equal to the sum of (i) the unallocated shares of common stock remaining available for future grants under the 2011 Plan as of May 15, 2018, (ii) 10,000,000 newly reserved shares of common stock and (iii) the number of shares subject to awards granted under

121

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

the 2002 Equity Incentive Plan, and the 2011 Plan as such shares become available from time to time, referred to as the Prior Plans’ Returning Shares. Such Prior Plans’ Returning Shares become available for issuance under the 2018 Plan if outstanding stock awards granted under the 2002 Equity Incentive Plan and the 2011 Plan, after May 15, 2018, expire or terminate for any reason prior to exercise or settlement or are forfeited, cancelled or otherwise returned to us because of the failure to meet a contingency or condition required for the vesting of such shares, or, subject to certain exceptions, are reacquired or withheld (or not issued) by us to satisfy a tax withholding obligation in connection with a stock award. In May 2023, May 2022 and May 2021, our stockholders approved amendments to our 2018 Equity Incentive Plan to increase the total number of shares issuable under such plan by 43,360,000, 11,000,000, and 12,500,000 shares of our common stock, respectively. As of December 31, 2024, an aggregate total of 81,447,090 shares of common stock have been reserved under the 2018 Equity Incentive Plan, with 32,587,928 available for future grants.

Stock options granted under the 2018 Plan expire no later than ten years from the date of grant. Stock option exercise prices shall be equal to the fair market value of the underlying common stock on the date of grant. If, at the time we grant a stock option, the optionee directly or by attribution owns stock possessing more than 10% of the total combined voting power of all classes of our stock, the stock option exercise price shall be at least 110% of the fair market value of the underlying common stock and shall not be exercisable more than five years after the date of grant.

We grant service-based and performance-based stock options to employees under the 2018 Plan. Service-based stock options generally vest over a period of four years from the date of the stock option grant. Performance-based stock options vest upon the achievement of specified milestones. Other stock awards (restricted stock awards and restricted stock units) have variable vesting schedules as determined by our board of directors on the date of grant.

Under certain circumstances, stock options may be exercised prior to vesting, subject to our right to repurchase the shares underlying such stock option at the exercise price paid per share. Our repurchase rights would generally terminate on a vesting schedule identical to the vesting schedule of the exercised stock option. During 2024 and 2023, we did not repurchase any shares under the 2018 Plan. As of December 31, 2024, we have no shares outstanding subject to repurchase under the 2018 Plan.

As of December 31, 2024, our Non‑Employee Director Compensation Policy adopted by our board of directors in March 2014, as amended and restated in February 2024 and February and March 2022, provides for the automatic grant to non‑employee directors of the following types of equity awards under the 2018 Plan:

First Director Option. Each person who becomes a non‑employee director, whether by election by our stockholders or by appointment by our board of directors to fill a vacancy, will automatically be granted a stock option to purchase 270,000 shares of common stock, or First Director Option, on the date such person first becomes a non‑employee director. The First Director Option vests annually over three years upon each anniversary date of appointment to our board of directors.

Subsequent Director Option. Each non‑employee director (other than any director receiving a First Director Option on the date of the annual meeting) will automatically be granted a subsequent stock option to purchase 180,000 shares of common stock, a Subsequent Director Option, on the date of the annual meeting of stockholders in each year during such director’s service on our board of directors. The Subsequent Director Option vests in full on the earlier of: (i) the date of the next annual meeting of our stockholders or (ii) the first anniversary of the date of grant.

2018 Inducement Award Plan

In December 2018, our board of directors approved the adoption of the 2018 Inducement Award Plan, or the Inducement Plan, pursuant to which we reserved 3,000,000 shares of our common stock to be used exclusively for grants of inducement awards to individuals who were not previously Geron employees or non-employee directors, other than following a bona fide period of non-employment. Since adoption of the Inducement Plan, the compensation committee of our board of directors, or the compensation committee, has approved amendments to our Inducement Plan to increase the aggregate total number of shares issuable under such plan to 40,300,000 shares of our common stock. The most recent amendment, approved by the compensation committee in December 2024, increased the total number of shares issuable under such plan by 5,300,000 shares of our common stock, effective as of January 1, 2025, to an aggregate of 40,300,000 shares. As of December 31, 2024, an aggregate total of

122

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

27,959,342 shares of common stock have been reserved under the Inducement Plan, with 851,137 available for future grants.

The Inducement Plan provides for the grant of nonstatutory stock options, stock appreciation rights, restricted stock awards, restricted stock units and other stock awards, and all awards under the Inducement Plan are intended to meet the standards under Rule 5635(c)(4) of the Nasdaq Listing Rules. The terms and conditions of the Inducement Plan and the inducement awards to be granted thereunder are substantially similar to our stockholder-approved 2018 Plan.

Directors’ Market Value Stock Purchase Plan

In October 2018, our board of directors adopted a Directors’ Market Value Stock Purchase Plan, or the Directors Market Plan. A total of 1,000,000 shares of our common stock have been reserved for the Directors Market Plan. Under the Directors Market Plan, non-employee directors may purchase shares of our common stock at the prevailing market price on the purchase date with cash compensation payable to them for their services as a board member. As stated in Geron’s Non-Employee Director Compensation Policy, each non-employee director receives annual cash compensation, payable quarterly in arrears, for their services on the board and various committees of the board. As provided in the Non-Employee Director Compensation Policy, a non-employee director may elect to receive fully vested shares of common stock in lieu of cash and such shares shall be issuable from the Directors Market Plan.

For the years ended December 31, 2024, 2023 and 2022, we issued 8,351, 36,864 and 15,962 shares of common stock, respectively, under the Directors Market Plan. The weighted average grant date fair value of stock granted during the years ended December 31, 2024 2023 and 2022 was $3.84, $2.37 and $1.92 per share, respectively. The total fair value of vested stock grants during 2024, 2023 and 2022 was $32,079, $85,400 and $29,000, respectively.

Aggregate stock option and award activity for the 2011 Plan, 2018 Plan, Inducement Plan and Directors Market Plan is as follows:

|  |  |  |  | Outstanding Stock Options |
|  |  |  |  |  |  |  |  |  |  | Weighted Average |  |  |  |
|  | Shares |  |  |  |  |  | Weighted Average |  |  | Remaining |  |  | Aggregate |
|  | Available |  |  | Number of |  |  | Exercise Price |  |  | Contractual Life |  |  | Intrinsic |
|  | For Grant |  |  | Shares |  |  | Per Share |  |  | (In years) |  |  | Value |
Balance at December 31, 2023 |  |  | 58,750,670 |  |  |  | 72,984,351 |  |  | $ | 2.16 |  |  |  |  |  |  |
Stock options granted |  |  | (29,603,740 | ) |  |  | 29,603,740 |  |  | $ | 2.86 |  |  |  |  |  |  |
Awards granted |  |  | (8,351 | ) |  |  | — |  |  | $ | — |  |  |  |  |  |  |
Stock options exercised |  |  | — |  |  |  | (17,907,649 | ) |  | $ | 1.77 |  |  |  |  |  |  |
Stock options cancelled/forfeited/expired |  |  | 5,171,390 |  |  |  | (8,713,075 | ) |  | $ | 3.24 |  |  |  |  |  |  |
Balance at December 31, 2024 |  |  | 34,309,969 |  |  |  | 75,967,367 |  | (1) | $ | 2.40 |  |  |  | 7.35 |  |  | $ | 94,204,849 |
Stock options exercisable at December 31, 2024 |  |  |  |  |  | 37,943,520 |  |  | $ | 2.06 |  |  |  | 5.84 |  |  | $ | 57,488,305 |
Stock options fully vested and expected to vest at December 31, 2024 |  |  |  |  |  | 74,159,549 |  |  | $ | 2.39 |  |  |  | 7.30 |  |  | $ | 92,613,420 |

(1)
Includes 300,000 performance-based stock options granted that have not achieved the specified performance milestone.

The aggregate intrinsic value in the preceding table represents the total intrinsic value, based on Geron’s closing stock price of $3.54 per share as of December 31, 2024, which would have been received by the option holders had all the option holders exercised their stock options as of that date.

As of December 31, 2024, 2023 and 2022, there were 37,943,520, 39,995,642 and 36,085,389 exercisable stock options outstanding at weighted average exercise prices per share of $2.06, $2.16 and $2.17, respectively, all of which were granted at an exercise price equal to the fair market value of our common stock.

123

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The total pretax intrinsic value of stock options exercised during 2024, 2023, and 2022 was $41.2 million $12.0 million and $0.8 million, respectively. Cash received from the exercise of stock options in 2024, 2023, and 2022 totaled approximately $31.6 million, $12.4 million and $1.8 million, respectively.

Employee Stock Purchase Plan

In March 2014, our board of directors adopted the 2014 Employee Stock Purchase Plan, or 2014 Purchase Plan. The 2014 Purchase Plan was approved by our stockholders in May 2014. The 2014 Purchase Plan replaced the 1996 Employee Stock Purchase Plan, or 1996 Purchase Plan, which was terminated effective as of the date the 2014 Purchase Plan was approved by our stockholders. In May 2022, our stockholders approved an amendment to our 2014 Purchase Plan to increase the total number of shares issuable under such plan by 1,000,000 shares of our common stock, for an aggregate total reserve of 2,000,000 shares. As of December 31, 2024, an aggregate of 1,741,634 shares of our common stock have been issued under the 2014 Purchase Plan since its adoption.

The 2014 Purchase Plan is comprised of a series of offering periods, each with a maximum duration (not to exceed 12 months) with new offering periods commencing on January 1st and July 1st of each year. The date an employee enters the offering period will be designated as the entry date for purposes of that offering period. An employee may participate only in one offering period at a time. Each offering period consists of two consecutive purchase periods of six months’ duration, with the last day of such period designated a purchase date.

Under the terms of the 2014 Purchase Plan, employees can choose to have up to 10% of their annual salary withheld to purchase our common stock, up to a limit of $25,000 per year. An employee may not make additional payments into such account or increase the withholding percentage during the offering period.

The purchase price per share at which common stock is purchased by the employee on each purchase date within the offering period is equal to 85% of the lower of (i) the fair market value per share of our common stock on the employee’s entry date into that offering period or (ii) the fair market value per share of our common stock on the purchase date. If the fair market value per share of our common stock on the purchase date is less than the fair market value at the beginning of the offering period, a new 12 month offering period will automatically begin on the first business day following the purchase date with a new fair market value.

Stock‑Based Compensation for Employees and Directors

We measure and recognize compensation expense for all share‑based payment awards made to employees and directors, including employee stock options, restricted stock awards, restricted stock unit awards, and employee stock purchases, based on grant‑date fair values for these instruments. We use the Black-Scholes option‑pricing model to estimate the grant‑date fair value of our service-based and performance-based stock options and employee stock purchases. The fair value for service‑based restricted stock awards and restricted stock unit awards is determined using the fair value of our common stock on the date of grant.

As stock‑based compensation expense recognized on the consolidated statements of operations for the years ended December 31, 2024, 2023 and 2022 is based on awards ultimately expected to vest, it has been reduced for estimated forfeitures, but at a minimum, reflects the grant‑date fair value of those awards that actually vested in the period. Forfeitures have been estimated at the time of grant based on historical data and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.

In 2024, 2023, and 2022, our board of directors awarded 208,100, 832,790 and 2,741,750 performance-based stock options, respectively, to certain employees. These performance-based stock options are included in the outstanding stock options table above. Performance-based stock options vest only upon achievement of discrete milestones. Stock-based compensation expense for performance-based stock options is recognized over the period from the date the performance condition is determined to be probable of occurring through the date the applicable condition is expected to be met and is reduced for estimated forfeitures, as applicable. If the performance condition is not considered probable of being achieved, no stock-based compensation expense is recognized until such time as the performance condition is considered probable of being achieved, if ever.

We recognize stock‑based compensation expense for service-based stock options on a straight‑line basis over the requisite service period, which is generally the vesting period. We recognized $6.5 million

124

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

of stock-based compensation expense for performance-based stock options on our consolidated statements of operations for the year ended December 31, 2024. We recognized $3.2 million of stock-based compensation expense for performance-based stock options on our consolidated statements of operations for the year ended December 31, 2023. We did not recognize any stock-based compensation expense for performance-based stock options on our consolidated statements of operations for the years ended December 31, 2022 ,as the achievement of the specified milestones was not considered probable during that time. The following table summarizes the stock‑based compensation expense related to service-based stock options and employee stock purchases for the years ended December 31, 2024, 2023 and 2022, which was allocated as follows:

|  | Year Ended December 31, |
(In thousands) |  | 2024 |  |  | 2023 |  |  | 2022 |
Research and development |  | $ | 10,280 |  |  | $ | 7,426 |  |  | $ | 3,720 |
General and administrative |  |  | 21,647 |  |  |  | 11,099 |  |  |  | 4,281 |
Total Stock-based compensation expense |  | $ | 31,927 |  |  | $ | 18,525 |  |  | $ | 8,001 |

Stock-based compensation of $0.7 million was capitalized to inventory for the twelve months ended December 31, 2024.

The fair value of stock options granted in 2024, 2023, and 2022 has been estimated at the date of grant using the Black-Scholes option‑pricing model with the following assumptions:

|  | Year Ended December 31,
|  | 2024 |  | 2023 |  | 2022
Dividend yield |  | 0% |  | 0% |  | 0%
Expected volatility range |  | 0.72 to 0.87 |  | 0.82 to 0.83 |  | 0.77 to 0.82
Risk-free interest rate range |  | 3.5% to 4.6% |  | 3.42% to 4.94% |  | 1.69% to 4.57%
Expected term range |  | 6.0 yrs |  | 6.0 yrs |  | 5.5 yrs

The fair value of employee stock purchases in 2024, 2023, and 2022 has been estimated using the Black-Scholes option‑pricing model with the following assumptions:

|  | Year Ended December 31,
|  | 2024 |  | 2023 |  | 2022
Dividend yield |  | 0% |  | 0% |  | 0%
Expected volatility range |  | 0.72. to 1.19 |  | 0.79 to 0.83 |  | 0.61 to 0.87
Risk-free interest rate range |  | 4.8% to 5.4% |  | 4.73% to 5.4% |  | 0.40% to 2.79%
Expected term range |  | 6 - 12 mos |  | 6 - 12 mos |  | 6 - 12 mos

Dividend yield is based on historical cash dividend payments and we have paid no cash dividends to date. The expected volatility range is based on historical volatilities of our stock, since traded options on our common stock do not correspond to option terms and the trading volume of options is limited. The risk‑free interest rate range is based on the U.S. Zero Coupon Treasury Strip Yields for the expected term in effect on the date of grant for an award. The expected term of stock options is derived from actual historical exercise and post‑vesting cancellation data and represents the period of time that stock options granted are expected to be outstanding. The expected term of employees’ purchase rights is equal to the purchase period.

Based on the Black-Scholes option‑pricing model, the weighted-average estimated fair value of stock options granted during the years ended December 31, 2024, 2023 and 2022 was $2.05, $1.95 and $0.92 per share, respectively. The weighted average estimated fair value of employees’ purchase rights for the years ended December 31, 2024, 2023 and 2022 was $0.82, $1.10 and $0.48 per share, respectively. As of December 31, 2024, total compensation cost related to unvested share‑based payment awards not yet recognized, net of estimated forfeitures and assuming no probability of achievement for outstanding performance-based stock options, was $65.6 million, which is expected to be recognized over the next 32 months on a weighted‑average basis.

125

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Stock‑Based Compensation to Service Providers

We grant stock options to consultants from time to time in exchange for services performed for us. In general, the stock options vest over the contractual period of the consulting arrangement. The fair value of stock options held by consultants is recorded as operating expenses over the vesting term of the respective equity awards. With the adoption of Accounting Standards Update 2018-07, Improvements to Nonemployee Share-Based Payment Accounting, or ASU 2018-07, in the first quarter of 2019, the measurement date of stock options granted to consultants was fixed at the grant date. We recorded stock‑based compensation expense of $103,000, $742,000 and $235,000 for the vested portion of the fair value of stock options held by consultants in 2024, 2023, and 2022, respectively.

Common Stock Reserved for Future Issuance

Common stock reserved for future issuance as of December 31, 2024 is as follows:

Outstanding stock options |  |  | 75,967,367 |
Stock options and awards available for grant |  |  | 34,309,969 |
Employee stock purchase plan |  |  | 258,366 |
Warrants outstanding |  |  | 60,835,667 |
Total |  |  | 171,371,369 |

11. INCOME TAXES

The components of Income/(Loss) before income taxes are as follows:

| 2024 |  |  | 2023 |  |  | 2022 |
Domestic |  | (174,737 | ) |  |  | (181,884 | ) |  |  | (141,930 | )
Foreign |  | 215 |  |  |  | 150 |  |  |  | 28 |
Total |  | (174,521 | ) |  |  | (181,734 | ) |  |  | (141,902 | )

Provision for (benefit from) income taxes:

| 2024 |  |  | 2023 |  |  | 2022 |
State |  | 398 |  |  |  | — |  |  |  | — |
Foreign |  | 51 |  |  |  | 22 |  |  |  | — |
Total |  | 449 |  |  |  | 22 |  |  |  | — |

The following table reconciles the federal statutory tax rate to the effective income tax rate from continuing operations:

| 2024 |  | 2023 |  | 2022
Tax at statutory rate |  | 21.0 |  | % |  |  | 21.0 |  | % |  |  | 21.0 |  | %
State income tax, net of federal benefit |  | (1.7 | ) |  |  |  | 6.6 |  |  |  |  | 6.8 |  |
Federal and state tax credits |  | 2.7 |  |  |  |  | 4.1 |  |  |  |  | 4.9 |  |
Stock-based compensation |  | (0.1 | ) |  |  |  | (0.7 | ) |  |  |  | (0.8 | ) |
Net operating loss not benefitted |  | (0.5 | ) |  |  |  | (5.7 | ) |  |  |  | (4.3 | ) |
Other |  | (1.6 | ) |  |  |  | (0.5 | ) |  |  |  | (0.1 | ) |
Change in valuation allowance |  | (20.1 | ) |  |  |  | (24.8 | ) |  |  |  | (27.5 | ) |
Effective tax rate |  | (0.3 | ) | % |  |  | 0.0 |  | % |  |  | 0.0 |  | %

126

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of our deferred tax assets are as follows:

|  | December 31, |
|  | 2024 |  |  | 2023 |
|  | (In thousands) |
Net operating loss carryforwards |  | $ | 272,970 |  |  | $ | 272,300 |
Federal and state tax credits |  |  | 70,492 |  |  |  | 64,700 |
Capitalized research and development |  |  | 39,503 |  |  |  | 43,300 |
Stock-based compensation |  |  | 8,353 |  |  |  | 11,200 |
Revenue Participation |  |  | 29,547 |  |  |  | — |
Operating lease liabilities |  |  | 767 |  |  |  | 1,100 |
Other |  |  | 8,963 |  |  |  | 3,600 |
Total deferred tax assets |  |  | 430,595 |  |  |  | 396,200 |
Less: valuation allowance |  |  | (429,913 | ) |  |  | (395,200 | )
Net deferred tax assets |  |  | 682 |  |  |  | 1,000 |
Operating leases, right-of-use assets |  |  | (682 | ) |  |  | (1,000 | )
Total deferred tax liabilities |  |  | (682 | ) |  |  | (1,000 | )
Total net deferred tax assets |  | $ | — |  |  | $ | — |

We record net deferred tax assets to the extent we believe these assets will more likely than not be realized. In making such determination, we consider all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial performance. Forming a conclusion that a valuation allowance is not required is difficult when there is negative evidence such as cumulative losses in recent years. Because of our history of losses, the net deferred tax assets have been fully offset by a valuation allowance. The valuation allowance increased by $35.0 million and $45.6 million for the years ended December 31, 2024 and 2023, respectively.

As of December 31, 2024, we had domestic federal net operating loss carryforwards of approximately $1.0 billion. Of this, $631.5 million will expire at various dates beginning in 2025 through 2037 and the remaining will carryforward indefinitely under the new tax laws, but is subject to an 80% taxable income limitation for tax years beginning after 2020. As of December 31, 2024, we had state net operating loss carryforwards of approximately $844.4 million expiring at various dates beginning in 2028 through 2044. We also had federal tax credit carryforwards of approximately $79.0 million expiring at various dates beginning in 2025 through 2044, if not utilized. Our state tax credit carryforwards of approximately $23.3 million carry forward indefinitely.

Utilization of net operating loss and tax credit carryforwards may be subject to an annual limitation due to ownership change limitations provided by the Internal Revenue Code and similar state provisions. Annual limitations may result in expiration of net operating loss and tax credit carryforwards before some or all of such amounts have been utilized.

We adopted the provision of the standard for accounting for uncertainties in income taxes on January 1, 2007. Upon adoption, we recognized no material adjustment in the liability for unrecognized tax benefits. At December 31, 2024, we had approximately $28.3 million of unrecognized tax benefits, none of which would currently affect our effective tax rate if recognized due to our net deferred tax assets being fully offset by a valuation allowance.

A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):

Balance as of December 31, 2023 |  | $ | 26,331 |
Decrease related to prior year tax positions |  |  | (494 | )
Increase related to current year tax positions |  |  | 2,473 |
Balance as of December 31, 2024 |  | $ | 28,310 |

If applicable, we would classify interest and penalties related to uncertain tax positions in income tax expense. Through December 31, 2024, there has been no interest expense or penalties related to unrecognized tax benefits.

127

GERON CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

We do not currently expect any significant changes to unrecognized tax benefits during the fiscal year ended December 31, 2025. In certain cases, our uncertain tax positions are related to tax years that remain subject to examination by the relevant tax authorities. Tax years for which we have carryforward net operating loss and credit attributes remain subject to examination by federal and most state tax authorities.

12. CONSOLIDATED STATEMENTS OF CASH FLOWS DATA

|  | Year Ended December 31, |
|  | 2024 |  |  | 2023 |  |  | 2022 |
|  | (In thousands) |
Supplemental operating and investing activities: |  |  |  |  |  |  |  |  |
Net unrealized loss on marketable securities |  | $ | 88 |  |  | $ | (431 | ) |  | $ | (68 | )
Reclassification between prepaid and other current assets and deposits and other assets |  |  | — |  |  |  | — |  |  |  | (5 | )
Interest paid |  | $ | 10,364 |  |  | $ | 7,017 |  |  | $ | 5,154 |

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13. SEGMENT REPORTING

We are currently developing therapies for the treatment of hematologic malignancies. To date, our only source of product revenue has been from U.S. sales of RYTELO, which began shipping to customers in June 2024. Additionally, we have generated insignificant royalty and license fee revenue under agreements that out-license technology to various companies.

For the year ended December 31, 2024, we have identified one operating and reportable segment. We define our operating segments based on internally reported financial information that is regularly reviewed by the Chief Operating Decision Maker or CODM to analyze financial performance, make decisions, and allocate resources. Our Chief Executive Officer is the CODM.

The CODM reviews the segment's profit or loss based on net (loss) income reported on the consolidated statement of operations and comprehensive (loss) income and considers forecast-to-actuals variances on a quarterly basis for expenses that are deemed significant. Further, the CODM reviews the segment's assets based on total assets reported on the consolidated balance sheet. All long-lived assets are held in the United States.

Our CODM views specific categories within research and development expenses and selling, general and administrative expenses as significant given the correlation between cash burn and profitability. The following table reconciles reported revenues to net (loss) income under the significant expense principle for the years ended December 31, 2024 and 2023:

|  | December 31, |  | December 31,
|  | 2024 |  | 2023
(in millions)
Revenues: |  |  |  |
Product revenue, net |  | 76.5 |  | -
Royalties |  | 0.5 |  | 0.2
Total revenues | $ | 77.0 | $ | 0.2
Operating expenses: |  |  |  |
Cost of goods sold |  | 1.3 |  | -
Research and development |  |  |  |
Research and clinical expenses |  | 67.9 |  | 74.9
Chemistry, manufacturing, and control expenses |  | 26.2 |  | $42.5
Selling, general and administrative |  |  |  |
Commercial expenses |  | 72.0 |  | 27.4
Other segment expenses* |  | 83.3 |  | 49.4
Total operating expenses | $ | 250.7 | $ | 194.2
Loss from operations |  | (173.7) |  | (193.9)
Total interest and other income (expense) |  | (0.9) |  | 9.8
Net loss | $ | (174.6) | $ | (184.1)

*Other segment expenses includes stock-based compensation expense and other general and administrative expenses largely resulting from personnel costs for individuals in administrative functions and legal and professional fees.

Accordingly, the Company consists of a single operating and reportable segment and the consolidated financial statements and notes thereto are presented as a single reportable segment.

129

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

(I) Evaluation of Disclosure Controls and Procedures

We have carried out an evaluation under the supervision and with the participation of management, including our Chief Executive Officer and our Chief Financial Officer, of our disclosure controls and procedures (as defined in Rule 13a‑15(e) of the Securities Exchange Act of 1934, as amended) as of the end of the period covered by this Report. Based on that evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of December 31, 2024.

In designing and evaluating disclosure controls and procedures, our management recognizes that any system of controls, however well designed and operated, can provide only reasonable assurance, and not absolute assurance, that the desired control objectives of the system are met. In addition, the design of any control system is based in part upon certain assumptions about the likelihood of future events. Because of these and other inherent limitations of control systems, there can be no assurance that any design will succeed in achieving its stated goals in all future circumstances. Accordingly, our disclosure controls and procedures are designed to provide reasonable, not absolute, assurance that the objectives of our disclosure control system are met and, as set forth above, our Chief Executive Officer and our Chief Financial Officer have concluded, based on their evaluation as of the end of the period covered by this Report, that our disclosure controls and procedures were effective to provide reasonable assurance that the objectives of our disclosure control system were met.

(II) Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting during the quarter ended December 31, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

(III) Management’s Report on Internal Control over Financial Reporting

Internal control over financial reporting refers to the process designed by, or under the supervision of, our Chief Executive Officer and Chief Financial Officer, and effected by our board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles, and includes those policies and procedures that:

(1)
Pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of our assets;
(2)
Provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and
(3)
Provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the financial statements.

Management is responsible for establishing and maintaining an adequate internal control over financial reporting for us. Internal control over financial reporting cannot provide absolute assurance of achieving financial reporting objectives because of its inherent limitations. Internal control over financial reporting is a process that involves human diligence and compliance and is subject to lapses in judgment and breakdowns resulting from human failures. Internal control over financial reporting also can be circumvented by collusion or improper management override. Because of such limitations, there is a risk that material misstatements may not be prevented or detected on a timely basis by internal control over financial reporting. However, these inherent limitations are known features of the financial reporting process. Therefore, it is possible to design into the process safeguards to reduce, though not eliminate, this risk.

Under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, we conducted an evaluation of the effectiveness of our internal control over

130

financial reporting based on the framework set forth in “Internal Control—Integrated Framework” issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework). Based on our evaluation under the framework set forth in “Internal Control—Integrated Framework,” our management concluded that our internal control over financial reporting was effective as of December 31, 2024.

(IV) Report of Independent Registered Public Accounting Firm

This Report includes an attestation report of our independent registered public accounting firm. It is set forth in Item 8 above.

ITEM 9B. OTHER INFORMATION

None.

ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS

Not applicable.

PART III

Certain information required by Part III is omitted from this Report because we will file with the U.S. Securities and Exchange Commission a definitive proxy statement pursuant to Regulation 14A in connection with the solicitation of proxies for Geron’s Annual Meeting of Stockholders expected to be held in May 2025, or the Proxy Statement, not later than 120 days after the end of the fiscal year covered by this Report, and certain information included therein is incorporated herein by reference, or an amendment to this Report under cover of Form 10-K/A containing the information required by this Part III.

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Identification of Directors and Nominees for Director

The information required by this item concerning our directors and nominees for director is incorporated by reference from the section captioned “Proposal 1: Election of Directors” contained in our Proxy Statement.

Identification of Executive Officers

The information required by this item concerning our executive officers is set forth in Part I, Item 1 of this Report.

Code of Ethics

We have adopted a Code of Conduct with which every person who works for Geron, including our board of directors, is expected to comply. The Code of Conduct is publicly available on our website under the Investors & Media section at www.geron.com. This website address is intended to be an inactive, textual reference only; none of the material on this website is part of this Report. If any substantive amendments are made to the Code of Conduct or any waiver granted, including any implicit waiver, from a provision of the Code of Conduct to our Chief Executive Officer, Chief Financial Officer or Corporate Controller, we will disclose the nature of such amendment or waiver on that website or in a report on Form 8‑K.

Copies of the Code of Conduct will be furnished without charge to any person who submits a written request directed to the attention of our Corporate Secretary, at our offices located at 919 East Hillsdale Boulevard, Suite 250, Foster City, California, 94404.

Insider Trading Policy

We have adopted an Insider Trading Policy governing the purchase, sale and/or other dispositions of our securities by our directors, officers and employees. A copy of the Insider Trading Policy is filed as an exhibit to this Report. In addition, it is the Company’s practice to comply with applicable laws and regulations relating to insider trading.

Certain Corporate Governance Matters

131

The information required by this item concerning our audit committee, audit committee financial expert and procedures by which stockholders may recommend nominees to our board of directors, may be found under the sections captioned “Board Leadership and Governance” and “Other Matters” contained in the Proxy Statement.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this item is incorporated by reference from the sections captioned “Compensation Discussion and Analysis,” “Compensation Committee Report,” “Executive Compensation Tables and Related Narrative Disclosure,” “Compensation of Directors” and “Compensation Committee Interlocks and Insider Participation” contained in the Proxy Statement.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required by this item is incorporated by reference from the sections captioned “Equity Compensation Plan Information” and “Security Ownership of Certain Beneficial Owners and Management” contained in the Proxy Statement.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by this item is incorporated by reference from the sections captioned “Proposal 1: Election of Directors” and “Certain Transactions” contained in the Proxy Statement.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

The information required by this item is incorporated by reference from the section captioned “Principal Accountant Fees and Services” contained in the Proxy Statement.

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) (1) Financial Statements

Included in Part II, Item 8 of this Report:

| Page
Report of Independent Registered Public Accounting Firm | 92
Consolidated Balance Sheets—December 31, 2024 and 2023 | 95
Consolidated Statements of Operations—Years Ended December 31, 2024, 2023 and 2022 | 96
Consolidated Statements of Comprehensive Loss—Years Ended December 31, 2024, 2023 and 2022 | 97
Consolidated Statements of Stockholders’ Equity—Years Ended December 31, 2024, 2023 and 2022 | 98
Consolidated Statements of Cash Flows—Years Ended December 31, 2024, 2023 and 2022 | 100
Notes to Consolidated Financial Statements | 101

(2)
Financial Statement Schedules

Financial statement schedules are omitted because they are not required or the information is disclosed in the financial statements listed in Item 15(a)(1) above.

132

(3)
Exhibits

|  | Incorporation by Reference
Exhibit Number | Description | Exhibit Number | Filing | Filing Date | File No.
3.1 | Restated Certificate of Incorporation | 3.3 | 8‑K | May 18, 2012 | 000‑20859
3.2 | Certificate of Amendment of the Restated Certificate of Incorporation | 3.1 | 8‑K | May 18, 2012 | 000‑20859
3.3 | Certificate of Amendment of the Restated Certificate of Incorporation | 3.1 | 8-K | June 7, 2019 | 000-20859
3.4 | Certificate of Amendment of the Restated Certificate of Incorporation | 3.1 | 8-K | May 13, 2021 | 000-20859
3.5 | Certificate of Amendment of the Restated Certificate of Incorporation | 3.1 | 8-K | June 2, 2023 | 000-20859
3.6 | Amended and Restated Bylaws of Registrant | 3.1 | 8‑K | December 15, 2023 | 000‑20859
4.1 | Description of Capital Stock | 4.1 | 10-K | February 28, 2024 | 000-20859
4.2 | Form of Common Stock Certificate | 4.1 | 10‑K | March 15, 2013 | 000‑20859
4.3 | Form of Pre-Funded Warrant to Purchase Common Stock | 4.1 | 8-K | May 26, 2020 | 000‑20859
4.4 | Form of Warrant to Purchase Common Stock | 4.2 | 8-K | May 26, 2020 | 000‑20859
4.5 | Form of Pre-Funded Warrant to Purchase Common Stock | 4.1 | 8-K | March 30, 2022 | 000‑20859
4.6 | Form of Pre-Funded Warrant to Purchase Common Stock | 4.1 | 8-K | January 6, 2023 | 000‑20859
4.7 | Form of Pre-Funded Warrant to Purchase Common Stock | 4.1 | 8-K | March 20, 2024 | 000-20859
10.1 | Form of Indemnification Agreement | 10.1 | 10‑K | March 7, 2012 | 000‑20859
10.2 | 2011 Incentive Award Plan* | 10.1 | 8‑K | May 16, 2011 | 000‑20859
10.3 | Form of Stock Option Agreement under 2011 Incentive Award Plan* | 10.11 | 10‑K | March 15, 2013 | 000‑20859
10.4 | Form of Restricted Stock Award Agreement under 2011 Incentive Award Plan* | 10.12 | 10‑K | March 15, 2013 | 000‑20859
10.5 | Form of Non‑Employee Director Stock Option Agreement under 2011 Incentive Award Plan* | 10.2 | 10‑Q | May 7, 2015 | 000‑20859
10.6 | 2018 Equity Incentive Plan, as amended* | 10.1 | 8-K | June 2, 2023 | 000-20859
10.7 | UK Sub-Plan to 2018 Equity Incentive Plan* | 10.1 | 10-Q | November 7, 2022 | 000-20859
10.8 | Form of 2018 Equity Incentive Plan Option Agreement (Time Based)* | 10.2 | 10-Q | November 7, 2022 | 000-20859
10.9 | Form of 2018 Equity Incentive Plan Option Agreement (Performance Based)* | 10.3 | 10-Q | November 7, 2022 | 000-20859
10.10 | Form of Non-Employee Director Stock Option Agreement under 2018 Equity Incentive Plan, as amended* | 10.13 | 10-K | March 7, 2019 | 000-20859
10.11 | Form of Performance-Vesting Stock Option Agreement under 2018 Equity Incentive Plan, as amended* | 10.15 | 10-K | March 7, 2019 | 000-20859
10.12 | Form of Restricted Stock Unit Agreement under 2018 Equity Incentive Plan* |  |  |  |
10.13 | 2018 Inducement Award Plan, as amended January 1, 2025* |  |  |  |
10.14 | UK Sub-Plan to 2018 Inducement Award Plan* | 10.5 | 10-Q | November 7, 2022 | 000-20859
10.15 | Form of Stock Option Agreement under 2018 Inducement Award Plan, as amended* | 10.19 | 10-K | March 7, 2019 | 000-20859
10.16 | Form of Performance-Vesting Stock Option Agreement under 2018 Inducement Award Plan* | 10.20 | 10-K | March 7, 2019 | 000-20859
10.17 | Form of Restricted Stock Unit Agreement under 2018 Inducement Award Plan* |  |  |  |
10.18 | 2014 Employee Stock Purchase Plan, as amended* | 10.2 | 8‑K | May 13, 2022 | 000‑20859

133

10.19 | Form of 2018 Inducement Award Plan Option Agreement (Time Based)* | 10.6 | 10-Q | November 7, 2022 | 000‑20859
10.20 | Form of 2018 Inducement Award Plan Option Agreement (Performance Based)* | 10.7 | 10-Q | November 7, 2022 | 000‑20859
10.21 | Non-Employee Director Compensation Policy, as amended February 16, 2022, March 7, 2022 and February 14, 2024* | 10.23 | 10-K | February 28, 2024 | 000-20859
10.22 | Directors’ Market Value Stock Purchase Plan, effective October 1, 2018* | 10.1 | 10-Q | November 1, 2018 | 000-20859
10.23 | Amended and Restated Severance Plan, effective as of January 1, 2022* | 10.22 | 10-K | March 10, 2022 | 000-20859
10.24 | Amended and Restated Employment Agreement between the Registrant and John A. Scarlett, M.D., effective as of January 31, 2019* | 10.29 | 10-K | March 7, 2019 | 000-20859
10.25 | Amended and Restated Employment Agreement between the Registrant and Andrew J. Grethlein, effective as of January 31, 2019* | 10.31 | 10-K | March 7, 2019 | 000-20859
10.26 | Employment Agreement by and between the Registrant and Scott A. Samuels, effective as of August 1, 2023* | 10.1 | 10-Q | November 2, 2023 | 000-20859
10.27 | Employment Agreement by and between the Registrant and Michelle Robertson, effective as of September 25, 2023* | 10.2 | 10-Q | November 2, 2023 | 000-20859
10.28 | Employment Agreement by and between the Registrant and James Ziegler, effective as of September 9, 2024* | 10.1 | 10-Q | November 7, 2024 | 000-20859
10.29 | Employment Agreement by and between the Registrant and Joseph Eid, effective as of November 11, 2024* |  |  |  |
10.30 | Office Lease Agreement by and between Registrant and 3 Sylvan Realty LLC, effective as of April 30, 2019 | 10.18 | 10-Q | May 2, 2019 | 000‑20859
10.31 | Office Lease Agreement by and between Registrant and Hudson Metro Center LLC, effective as of October 9, 2019 | 10.1 | 8-K | October 15, 2019 | 000‑20859
10.32 | At Market Issuance Sales Agreement, dated November 1, 2023, by and between Registrant and B. Riley Securities, Inc. | 10.1 | 8-K | November 2, 2023 | 000-20859
10.33 | Loan Agreement, dated November 1, 2024, among Registrant, BioPharma Credit Investments V (Master) LP and BPCR Limited Partnership^ |  |  |  |
10.34 | Revenue Participation Right Purchase and Sale Agreement, dated November 1, 2024, by and between Registrant and Royalty Pharma Development Funding, LLC^ |  |  |  |
19.1 | Insider Trading Policy |  |  |  |
21.1 | List of Subsidiaries |  |  |  |
23.1 | Consent of Independent Registered Public Accounting Firm |  |  |  |
24.1 | Power of Attorney (see signature page) |  |  |  |
31.1 | Certification of Chief Executive Officer pursuant to Form of Rule 13a‑14(a), as adopted pursuant to Section 302(a) of the Sarbanes‑Oxley Act of 2002 |  |  |  |
31.2 | Certification of Chief Financial Officer pursuant to Form of Rule 13a‑14(a), as adopted pursuant to Section 302(a) of the Sarbanes‑Oxley Act of 2002 |  |  |  |
32.1 | Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes‑Oxley Act of 2002** |  |  |  |

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32.2 | Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes‑Oxley Act of 2002** |  |  |  |
97.1 | Incentive Compensation Recoupment Policy, effective October 2, 2023* | 97.1 | 10-K | February 28, 2024 | 000-20859
101 | The following materials from the Registrant’s annual report on Form 10‑K for the year ended December 31, 2024, formatted in Inline Extensible Business Reporting Language (iXBRL) include: (i) Consolidated Balance Sheets as of December 31, 2024 and 2023, (ii) Consolidated Statements of Operations, Consolidated Comprehensive Loss, Stockholders’ Equity and Cash Flows for each of the three years in the period ended December 31, 2024, and (iii) Notes to Consolidated Financial Statements |  |  |  |
104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |  |  |  |

^ Certain portions of this exhibit have been omitted as the Registrant has determined that (i) the omitted information is not material and (ii) the omitted information is of the type that the Registrant customarily and actually treats as private or confidential.

* Management contract or compensation plan or arrangement.

** The certifications attached as Exhibits 32.1 and 32.2 that accompany this Report, are not deemed filed with the Securities and Exchange Commission and are not to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of this Report), irrespective of any general incorporation language contained in such filing.

ITEM 16. FORM 10‑K SUMMARY

None.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|  |  | GERON CORPORATION
Date: February 26, 2025 |  | By: | /s/ Michelle Robertson
|  |  | MICHELLE ROBERTSON Executive Vice President, Finance, Chief Financial Officer and Treasurer

POWER OF ATTORNEY

KNOW BY ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints, jointly and severally, John A. Scarlett, M.D. and Michelle Robertson, and each one of them, attorneys‑in‑fact for the undersigned, each with the power of substitution, for the undersigned in any and all capacities, to sign any and all amendments to this Report, and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that each of said attorneys‑in‑fact, or his or her substitutes, may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, each of the undersigned has executed this Power of Attorney as of the date indicated opposite his/her name.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

| Signature |  |  | Title |  |  | Date |
/s/ John A. Scarlett | President, Chief Executive Officer and Chairman of the Board (Principal Executive Officer) | February 26, 2025
JOHN A. SCARLETT
/s/ Michelle Robertson | Executive Vice President, Finance, Chief Financial Officer and Treasurer (Principal Financial and Accounting Officer) | February 26, 2025
MICHELLE ROBERTSON
/s/ GAURAV AGGARWAL | Director | February 26, 2025
GAURAV AGGARWAL
/s/ Dawn C. Bir | Director | February 26, 2025
DAWN C. BIR
/s/ V. Bryan Lawlis | Director | February 26, 2025
V. BRYAN LAWLIS
/s/ John McDonald | Director | February 26, 2025
JOHN F. McDONALD |  |
/s/ Susan Molineaux | Director | February 26, 2025
SUSAN M. MOLINEAUX
/s/ Elizabeth G. O’Farrell | Director | February 26, 2025
ELIZABETH G. O’FARRELL |  |
/s/ Robert J. Spiegel | Director | February 26, 2025
ROBERT J. SPIEGEL |  |

136