Nature of the Business and Basis of Presentation	9 Months Ended
Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of the Business and Basis of Presentation	1. Nature of the Business and Basis of Presentation Olema Pharmaceuticals, Inc. (“Olema” or the “Company”) is a clinical-stage biopharmaceutical company focused on the discovery, development, and commercialization of next-generation targeted therapies for breast cancer and beyond. The Company is advancing a pipeline of novel therapies by leveraging its deep understanding of endocrine-driven cancers, nuclear receptors, and mechanisms of acquired resistance. The Company's wholly-owned, lead product candidate, palazestrant (OP-1250), is a novel, orally-available small molecule with dual activity as both a complete estrogen receptor ("ER") antagonist ("CERAN") and selective ER degrader ("SERD"). In addition to its lead product candidate, Olema is developing a potent KAT6 inhibitor (OP-3136). The Company is located in San Francisco, California and was incorporated in Delaware on August 7, 2006 under the legal name of CombiThera, Inc., and on March 25, 2009, was renamed Olema Pharmaceuticals, Inc. The Company’s principal operations are based in San Francisco, California, and it has operations in Cambridge, Massachusetts. Olema Oncology Australia Pty Ltd was incorporated on January 6, 2021, and is a wholly-owned subsidiary of the Company (collectively with Olema Pharmaceuticals, Inc., referred to as “Olema” or the “Company” herein). It operates in one business segment and therefore has only one reportable segment. The Company is subject to risks and uncertainties common to late-stage companies in the biopharmaceutical industry, including, but not limited to, successful discovery and development of its product candidates, development by competitors of new technological innovations, dependence on key personnel, the ability to attract and retain qualified employees, protection of proprietary technology, compliance with governmental regulations, the impact of geopolitical and macroeconomic events discussed in further detail below, the ability to secure additional capital to fund operations and commercial success of its product candidates. Palazestrant, OP-3136 and any future product candidates the Company may develop will require extensive non-clinical and clinical testing and regulatory approval prior to commercialization. These efforts require significant amounts of additional capital, adequate personnel, and infrastructure and extensive compliance-reporting capabilities. Even if the Company’s product development efforts are successful, it is uncertain when, if ever, the Company will realize significant revenue from product sales. Liquidity The Company had $329.0 million of cash, cash equivalents and marketable securities at September 30, 2025, in addition to an available balance of $22.0 million under the Loan and Security Agreement dated as of September 5, 2023 (the “Original Loan Agreement”), by and between the Company, as borrower, and Silicon Valley Bank, a division of First-Citizens Bank & Trust Company (the “Bank”), as amended by the First Amendment to Loan and Security Agreement, dated June 28, 2024, by and between the Company and the Bank (the "First Amendment"), as further amended by the Second Amendment to Loan and Security Agreement, dated June 27, 2025 by and between the Company and the Bank (the "Second Amendment" and, collectively with the First Amendment and the Original Loan Agreement, the "Loan Agreement"). Refer to Note 11. Long-term Borrowing for further details. Management believes that the Company’s cash, cash equivalents, marketable securities, and the amounts available under the Loan Agreement will be sufficient to fund the Company’s current operating plan for at least the next 12 months from the filing date of these condensed consolidated financial statements. At-The-Market Offering On January 6, 2025, the Company entered into a sales agreement (the "2025 Sales Agreement") with TD Securities (USA) LLC, ("TD Cowen") as sales agent, pursuant to which the Company may offer and sell, from time to time, shares of the Company's common stock, having an aggregate offering price of up to $150.0 million (the “2025 ATM Shares”). The 2025 Sales Agreement replaces the prior sales agreement entered into between the Company and Cowen and Company, LLC dated January 5, 2024 (the "2024 Sales Agreement"). During the year ended December 31, 2024, the Company issued 1,772,278 shares of its common stock under the 2024 Sales Agreement at a weighted average price of $13.19 for net proceeds of $22.8 million after deducting related issuance costs. The sales of the 2025 ATM Shares will be made by any method permitted that is deemed to be an "at-the-market" equity offering as defined in Rule 415(a)(4) promulgated under the Securities Act, including sales made directly on or through the Nasdaq Global Select Market. The Company has agreed to pay TD Cowen a commission of up to 3.0% of the aggregate gross proceeds from any 2025 ATM Shares sold by TD Cowen. There were no sales under the 2025 Sales Agreement during the three and nine months ended September 30, 2025. As of September 30, 2025, $150.0 million remained available for issuance under the 2025 Sales Agreement. Private Placement On November 29, 2024, the Company entered into a securities purchase agreement for a private placement of (i) 19,928,875 shares of our common stock at a price of $9.08 per share and (ii) pre-funded warrants to purchase up to an aggregate of 7,604,163 shares of our common stock at a price of $9.0799 per pre-funded warrant, which represents the per share purchase price of the common stock sold in the private placement less the $0.0001 per share exercise price for each pre-funded warrant to selected institutional and accredited investors (the "2024 Private Placement"). The aggregate gross proceeds for the 2024 Private Placement were approximately $250.0 million. After deducting offering expenses related to the 2024 Private Placement of approximately $13.0 million, the net proceeds to us from the 2024 Private Placement were approximately $237.0 million. Warrant Exchanges On November 29, 2024 and January 10, 2025, the Company entered into exchange agreements with certain investors and issued to such investors pre-funded warrants to purchase up to 3,420,000 and 6,070,000 shares of the Company's common stock, respectively, in exchange for an equivalent number of shares of the Company's common stock previously outstanding and held by such investors. The pre-funded warrants were issued without registration under the Securities Act of 1933, as amended (the “Securities Act”), in reliance on the exemption from registration contained in Section 3(a)(9) of the Securities Act. Refer to Note 12. Pre-Funded Warrants for further details. Impact of Geopolitical and Macroeconomic Events Global economic and business activities continue to face widespread uncertainty related to the geopolitical and macroeconomic environment, generally, including economic uncertainty, market volatility, labor shortages, recent and changing tariff policy announcements, tariffs, trade tensions and retaliatory measures by other countries, supply chain disruptions, the ongoing conflicts between Ukraine and Russia and in the Middle East, as well as any related political or economic responses and counter-responses or otherwise by various global actors, inflationary pressures, monetary supply shifts, increased recession risk, and related financial instability. The extent of the impact of these factors on the Company’s operational and financial performance, including its ability to execute its business strategies and initiatives in the expected time frame, will depend on future developments, which are uncertain and cannot be predicted. Any continued or renewed disruption resulting from these factors could negatively impact the Company’s business. The Company continues to monitor the impact of these geopolitical and macroeconomic factors on its results of operations, financial condition and cash flows.

Nature of the Business and Basis of Presentation

9 Months Ended

Sep. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of the Business and Basis of Presentation

Olema Pharmaceuticals, Inc. (“Olema” or the “Company”) is a clinical-stage biopharmaceutical company focused on the discovery, development, and commercialization of next-generation targeted therapies for breast cancer and beyond. The Company is advancing a pipeline of novel therapies by leveraging its deep understanding of endocrine-driven cancers, nuclear receptors, and mechanisms of acquired resistance. The Company's wholly-owned, lead product candidate, palazestrant (OP-1250), is a novel, orally-available small molecule with dual activity as both a complete estrogen receptor ("ER") antagonist ("CERAN") and selective ER degrader ("SERD"). In addition to its lead product candidate, Olema is developing a potent KAT6 inhibitor (OP-3136).

The Company is located in San Francisco, California and was incorporated in Delaware on August 7, 2006 under the legal name of CombiThera, Inc., and on March 25, 2009, was renamed Olema Pharmaceuticals, Inc. The Company’s principal operations are based in San Francisco, California, and it has operations in Cambridge, Massachusetts. Olema Oncology Australia Pty Ltd was incorporated on January 6, 2021, and is a wholly-owned subsidiary of the Company (collectively with Olema Pharmaceuticals, Inc., referred to as “Olema” or the “Company” herein). It operates in one business segment and therefore has only one reportable segment. The Company is subject to risks and uncertainties common to late-stage companies in the biopharmaceutical industry, including, but not limited to, successful discovery and development of its product candidates, development by competitors of new technological innovations, dependence on key personnel, the ability to attract and retain qualified employees, protection of proprietary technology, compliance with governmental regulations, the impact of geopolitical and macroeconomic events discussed in further detail below, the ability to secure additional capital to fund operations and commercial success of its product candidates. Palazestrant, OP-3136 and any future product candidates the Company may develop will require extensive non-clinical and clinical testing and regulatory approval prior to commercialization. These efforts require significant amounts of additional capital, adequate personnel, and infrastructure and extensive compliance-reporting capabilities. Even if the Company’s product development efforts are successful, it is uncertain when, if ever, the Company will realize significant revenue from product sales.

Liquidity

The Company had $329.0 million of cash, cash equivalents and marketable securities at September 30, 2025, in addition to an available balance of $22.0 million under the Loan and Security Agreement dated as of September 5, 2023 (the “Original Loan Agreement”), by and between the Company, as borrower, and Silicon Valley Bank, a division of First-Citizens Bank & Trust Company (the “Bank”), as amended by the First Amendment to Loan and Security Agreement, dated June 28, 2024, by and between the Company and the Bank (the "First Amendment"), as further amended by the Second Amendment to Loan and Security Agreement, dated June 27, 2025 by and between the Company and the Bank (the "Second Amendment" and, collectively with the First Amendment and the Original Loan Agreement, the "Loan Agreement"). Refer to Note 11. Long-term Borrowing for further details. Management believes that the Company’s cash, cash equivalents, marketable securities, and the amounts available under the Loan Agreement will be sufficient to fund the Company’s current operating plan for at least the next 12 months from the filing date of these condensed consolidated financial statements.

At-The-Market Offering

On January 6, 2025, the Company entered into a sales agreement (the "2025 Sales Agreement") with TD Securities (USA) LLC, ("TD Cowen") as sales agent, pursuant to which the Company may offer and sell, from time to time, shares of the Company's common stock, having an aggregate offering price of up to $150.0 million (the “2025 ATM Shares”). The 2025 Sales Agreement replaces the prior sales agreement entered into between the Company and Cowen and Company, LLC dated January 5, 2024 (the "2024 Sales Agreement"). During the year ended December 31, 2024, the Company issued 1,772,278 shares of its common stock under the 2024

Sales Agreement at a weighted average price of $13.19 for net proceeds of $22.8 million after deducting related issuance costs. The sales of the 2025 ATM Shares will be made by any method permitted that is deemed to be an "at-the-market" equity offering as defined in Rule 415(a)(4) promulgated under the Securities Act, including sales made directly on or through the Nasdaq Global Select Market. The Company has agreed to pay TD Cowen a commission of up to 3.0% of the aggregate gross proceeds from any 2025 ATM Shares sold by TD Cowen. There were no sales under the 2025 Sales Agreement during the three and nine months ended September 30, 2025. As of September 30, 2025, $150.0 million remained available for issuance under the 2025 Sales Agreement.

Private Placement

On November 29, 2024, the Company entered into a securities purchase agreement for a private placement of (i) 19,928,875 shares of our common stock at a price of $9.08 per share and (ii) pre-funded warrants to purchase up to an aggregate of 7,604,163 shares of our common stock at a price of $9.0799 per pre-funded warrant, which represents the per share purchase price of the common stock sold in the private placement less the $0.0001 per share exercise price for each pre-funded warrant to selected institutional and accredited investors (the "2024 Private Placement"). The aggregate gross proceeds for the 2024 Private Placement were approximately $250.0 million. After deducting offering expenses related to the 2024 Private Placement of approximately $13.0 million, the net proceeds to us from the 2024 Private Placement were approximately $237.0 million.

Warrant Exchanges

On November 29, 2024 and January 10, 2025, the Company entered into exchange agreements with certain investors and issued to such investors pre-funded warrants to purchase up to 3,420,000 and 6,070,000 shares of the Company's common stock, respectively, in exchange for an equivalent number of shares of the Company's common stock previously outstanding and held by such investors. The pre-funded warrants were issued without registration under the Securities Act of 1933, as amended (the “Securities Act”), in reliance on the exemption from registration contained in Section 3(a)(9) of the Securities Act. Refer to Note 12. Pre-Funded Warrants for further details.

Impact of Geopolitical and Macroeconomic Events

Global economic and business activities continue to face widespread uncertainty related to the geopolitical and macroeconomic environment, generally, including economic uncertainty, market volatility, labor shortages, recent and changing tariff policy announcements, tariffs, trade tensions and retaliatory measures by other countries, supply chain disruptions, the ongoing conflicts between Ukraine and Russia and in the Middle East, as well as any related political or economic responses and counter-responses or otherwise by various global actors, inflationary pressures, monetary supply shifts, increased recession risk, and related financial instability. The extent of the impact of these factors on the Company’s operational and financial performance, including its ability to execute its business strategies and initiatives in the expected time frame, will depend on future developments, which are uncertain and cannot be predicted. Any continued or renewed disruption resulting from these factors could negatively impact the Company’s business. The Company continues to monitor the impact of these geopolitical and macroeconomic factors on its results of operations, financial condition and cash flows.