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Stock-Based Compensation | 6 Months Ended
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Jun. 30, 2026
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation | . Stock-Based Compensation The Company adopted the 2025 Equity Incentive Plan (the “2025 Plan”) in connection with the Merger, which was approved by Ikena’s stockholders at its annual meeting of its stockholders on July 15, 2025 and became effective on the date immediately following the consummation of the Merger. As of the effective time of the 2025 Plan, there were 1,118,167 shares of common stock available for grant under the 2025 Plan. In addition, the number of shares reserved and available for issuance under the 2025 Plan will automatically increase on January 1 of each year for a period of 10 years, commencing on January 1, 2026 and ending on January 1, 2035, in an amount equal to 5% of the total number of shares of the Company’s capital stock outstanding on the last day of the calendar month before the date of each automatic increase, or a lesser number of shares determined by the Company’s board of directors. The 2025 Plan is a successor to and continuation of Ikena’s 2021 Stock Option and Incentive Plan, as amended (the “2021 Plan”). In addition, the Company assumed, effective as of the closing of the Merger, the Legacy Inmagene 2019 Stock Incentive Plan (the “2019 Plan”). Upon adoption of the 2025 Plan, no further grants will be made under the 2021 Plan or the 2019 Plan. The number of shares reserved for issuance under the 2025 Plan was increased by 559,081 shares effective January 1, 2026 in accordance with the provisions of the 2025 Plan. Additionally, on June 16, 2026, the stockholders of the Company approved the Amended and Restated 2025 Equity Incentive Plan (the “Amended 2025 Plan”) to among other things, increase the aggregate number of shares of common stock authorized for issuance under the 2025 Plan by 850,000 shares and to include shares of common stock issuable upon conversion or exercise of convertible preferred stock and pre-funded warrants in the calculation of the annual automatic share reserve increase. As of June 30, 2026, 1,580,113 shares remain available for issuance under the 2025 Plan. In July 2025, the Company’s board of directors adopted and approved the 2025 Inducement Plan (the “Inducement Plan”) to reserve 589,585 shares of common stock to be used exclusively for grants of equity awards to individuals that were not previously employees or directors of the Company (or who are returning to employment following a bona fide period of non-employment), as an inducement material to the individual’s entry into employment with the Company, pursuant to Nasdaq Listing Rule 5635(c)(4). The Inducement Plan was adopted and approved without stockholder approval pursuant to Nasdaq Listing Rule 5635(c)(4). On December 18, 2025, the Company’s board of directors approved an amendment to the Inducement Plan to increase the maximum aggregate number of shares of common stock issuable thereunder to 1,589,585 shares of common stock. As of June 30, 2026, 918,558 shares remain available for issuance under the Inducement Plan. The Company adopted the 2025 Employee Stock Purchase Plan (the “2025 ESPP”) in connection with the Merger, which was approved by Ikena’s stockholders at its annual meeting of its stockholders on July 15, 2025 and became effective on the date immediately following the consummation of the Merger. As of the effective time of the 2025 ESPP, there were 111,816 shares of common stock available for issuance under the 2025 ESPP. In addition, the number of shares of common stock reserved for issuance under the 2025 ESPP will automatically increase on January 1 of each year for a period of 10 years, beginning on January 1, 2026 and continuing through and including January 1, 2035, by an amount equal to the lesser of (i) 1% of the total number of shares of the Company’s capital stock outstanding on the last day of the calendar month before the date of the automatic increase, and (ii) 227,944 shares; provided that before the date of any such increase, the Company’s board of directors may determine that such increase will be less than the amount set forth in clauses (i) and (ii). The number of shares reserved for issuance under the 2025 ESPP was increased by 111,816 shares effective January 1, 2026 in accordance with the provisions of the 2025 ESPP. The first offering period began on January 16, 2026 and will end on September 15, 2026. As of June 30, 2026, no shares had been granted or purchased and 223,632 shares remained available for issuance under the 2025 ESPP. Summary of Awards During the six months ended June 30, 2026, the Company granted 340,030 options with an aggregate grant-date fair value of $1.7 million and 256,212 RSUs with an aggregate grant-date fair value of $1.6 million to employees of the Company. Stock-based compensation expense Stock-based compensation expense was as follows (in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Research and development expenses |  | $ | 142 |  |  | $ | — |  |  | $ | 303 |  |  | $ | 57 |
General and administrative expenses |  |  | 769 |  |  |  | — |  |  |  | 1,484 |  |  |  | — |
Total stock-based compensation expense |  | $ | 911 |  |  | $ | — |  |  | $ | 1,787 |  |  | $ | 57 |
As of June 30, 2026, unrecognized stock-based compensation expense related to stock-based awards was $11.2 million, which is estimated to be recognized over a period of 3.0 years.

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