Between January 23, 2020 and March 5, 2020, three putative securities class action lawsuits were filed against us and certain of our officers. One of the lawsuits was voluntarily dismissed on March 19, 2020. The other two lawsuits, filed in the U.S. District Court for the Northern District of California, or the Northern District, were consolidated by the Court on May 14, 2020, and on August

20, 2020, the lead plaintiffs filed a consolidated class action complaint. The consolidated class action complaint alleges violations of the Securities Exchange Act of 1934, as amended, or the Exchange Act, in connection with allegedly false and misleading statements made by us related to IMbark, our Phase 2 clinical trial 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 relapsed/refractory myelofibrosis, during the period from March 19, 2018, to September 26, 2018. The consolidated class action complaint alleges, among other things, that we violated Sections 10(b) and 20(a) of the Exchange Act and SEC Rule 10b-5 by failing to disclose facts related to the alleged failure of IMbark to meet the two primary endpoints of the trial, spleen response rate and Total Symptom Score, and that our stock price dropped when such information was disclosed. The plaintiffs in the consolidated class action complaint seek damages and interest, and an award of reasonable costs, including attorneys’ fees. On October 22, 2020, lead plaintiffs filed an amended consolidated class action complaint. We filed a motion to dismiss the amended consolidated class action complaint on November 23, 2020. On April 12, 2021, the Court granted in part and denied in part our motion to dismiss. Our answer to the complaint was filed on May 13, 2021. Discovery has commenced, although the Court has not yet entered a case schedule or set a trial date.

Between April 23, 2020 and June 8, 2021, seven shareholder derivative actions were filed, naming as defendants certain of our current officers and certain current and former board members. Of these actions, or the Derivative Lawsuits, two were filed in the Northern District, two were filed in the Court of Chancery of the State of Delaware, two were filed in the U.S. District Court for the District of Delaware, and one was filed in the Superior Court of California for the County of San Mateo, respectively. The plaintiffs in the Derivative Lawsuits allege breach of fiduciary duty and/or violations of Section 14 of the Exchange Act, based on the same underlying facts as the consolidated class action lawsuit described above. The plaintiffs seek damages, corporate governance reforms, equitable relief, restitution, and an award of reasonable costs, including attorneys’ fees. The status of the seven Derivative Lawsuits is currently as follows:

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On July 2, 2021, we filed a motion to dismiss the consolidated shareholder derivative actions filed in the Court of Chancery of the State of Delaware, or the Chancery Court Derivative Lawsuits. The court has not set a hearing date for the motion;

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The consolidated shareholder derivative actions filed in the U.S. District Court for the District of Delaware have been stayed pending the ruling on our motion to dismiss in the Chancery Court Derivative Lawsuits;

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The consolidated shareholder derivative actions filed in the Northern District have been stayed pending the Northern District’s ruling on a motion by lead plaintiffs in the consolidated class action lawsuit to certify the putative class in the case; and

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Our motion to dismiss the shareholder derivative action pursuant to the forum selection clause in our amended and restated bylaws was filed in the Superior Court of California for the County of San Mateo on August 5, 2021.

The pending lawsuits and any other related lawsuits are subject to inherent uncertainties, and the actual defense and disposition costs will depend upon many unknown factors. The outcome of the pending lawsuits and any other related lawsuits is necessarily uncertain. We could be forced to expend significant resources in the defense against the pending lawsuits and any other related lawsuits, and we may not prevail. In addition, we may incur substantial legal fees and costs in connection with such lawsuits. We currently are not able to estimate the possible cost to us from these matters, as the pending lawsuits are currently at an early stage, and we cannot be certain how long it may take to resolve the pending lawsuits or the possible amount of any damages that we may be required to pay. Such amounts could be material to our financial statements if we do not prevail in the defense against the pending lawsuits and any other related lawsuits, or even if we do prevail. We have not established any reserve for any potential liability relating to the pending lawsuits and any other related lawsuits. It is possible that we could, in the future, incur judgments or enter into settlements of claims for monetary damages.

As of the date of this filing, uncertainty continues to exist concerning the ultimate duration and severity of the COVID-19 pandemic. At this time, the number of COVID-19 cases are increasing in certain regions due to the spread of COVID-19 variants, leading to the re-implementation of mask restrictions, social distancing and other restrictions. In addition, the variable and gradual process of vaccine distribution in some countries and the concern over further waves of infections are causing continued unpredictability and uncertainty about the pace at which clinical trial operations may normalize to allow patients and healthcare workers to return to clinical sites.

Due to the dynamic and unpredictable effects of the COVID-19 pandemic, we have had and expect to continue to have disruptions and/or delays in our imetelstat development program, including with respect to our ability to initiate trial sites, enroll and assess patients, maintain patient enrollment, ensure patient clinical and lab collection visits, conduct monitoring visits, supply study drug, report trial results, and interact with regulators or other important agencies due to limitations in employee resources or otherwise. Restrictions on travel, availability of site personnel, and diversion of hospital staff and resources to COVID-19 patients,

have disrupted our trial operations, as well as patient recruitment in many areas, resulting in a slowdown in patient enrollment and/or deviations from or disruptions in key clinical trial activities, such as clinical trial site initiation and monitoring. If the effects of the COVID-19 pandemic continue and persist for an extended period of time and/or become more severe, we could experience significant disruptions to our clinical development timelines, continued delays in patient enrollment in our ongoing Phase 3 clinical trials, and other disruptions that could severely impact our business and the imetelstat development program.

We have taken and intend to take those actions with regard to COVID-19 that may be required by federal, state or local authorities or that we determine are in the best interests of our patients, investigators, employees and stockholders. We have allowed limited voluntary access to our offices in California and New Jersey to employees who have been vaccinated, and almost all of our employees continue to work remotely without any significant disruption to our business. Our increased reliance on personnel working remotely could increase our cybersecurity risk, create data accessibility concerns and make us more susceptible to communication disruptions, any of which could adversely impact our business operations. These and similar, and perhaps more severe, disruptions in our operations could occur which would negatively impact our business and business prospects, our financial condition and the future of imetelstat. We plan to continue to evaluate our business operations based on new information as it becomes available regarding the pandemic and will make changes that we consider necessary in light of any new developments.

The effects of the COVID-19 pandemic have increased market volatility and could result in a significant long-term disruption of global financial markets, reducing or eliminating our ability to raise additional capital, which could negatively affect our liquidity, our ability to conduct and complete current Phase 3 clinical trials of imetelstat and to commence, conduct and complete any other potential future clinical trials of imetelstat. In addition, the global economic slowdown caused by the COVID-19 pandemic could materially and adversely affect our business and the value of our common stock.

The extent to which the COVID-19 pandemic impacts our business, our regulatory and clinical development activities, clinical supply chain and other business operations, as well as the value of and market for our common stock, will depend on future developments that are highly uncertain and cannot be predicted with confidence at this time, such as the ultimate duration and severity of the pandemic, travel restrictions, quarantines, social distancing and business closure requirements in the United States and in other countries, and the effectiveness of actions taken globally to treat and manage this health crisis. Accordingly, we do not yet know the full extent of potential delays or impacts on our business, our regulatory and clinical development activities, clinical supply chain and other business operations or the global economy as a whole. However, these effects could materially and adversely affect our business and business prospects, our financial condition and the future of imetelstat.