13. SUBSEQUENT EVENTS

Acquisition of Erigen Assets

On November 19, 2025, the Company executed an Asset Purchase Agreement (the “Asset Purchase Agreement”) with Erigen LLC, a Delaware limited liability company (“Erigen”), and Factor Bioscience Inc., a Delaware corporation (together with Erigen, “Sellers”), pursuant to which Sellers agreed to sell and transfer to the Company all right, title and interest of Sellers in and to all

of the assets primarily related to (a) the autologous BCMA/CD19 dual-targeting CAR T-cell therapy known as ERI-2003, (b) the autologous CD70/CD70 dual-targeting CAR T-cell therapy known as ERI-2206, (c) the allogeneic BCMA/CD19 dual-targeting CAR T-cell therapy with a gene edit in the TRAC locus that inactivates the T cell receptor known as ERI-3003, and (d) the allogeneic CD70/CD70 dual-targeting CAR T-cell therapy with a gene edit in the TRAC locus that inactivates the T cell receptor known as ERI-3206 (collectively referred to herein as the “Erigen Assets”), in exchange for an aggregate purchase price of 8,268,495 shares of the Company’s common stock to be issued to Erigen on behalf of both Sellers.

On February 3, 2026, the Company completed the acquisition of the Erigen Assets (the “Erigen Closing”) under the Asset Purchase Agreement (the “Asset Acquisition”) and issued to Erigen 8,268,495 shares of the Company’s common stock. Based on an assumed common stock price of approximately $2.41 per share, the aggregate consideration related to the Asset Acquisition is approximately $19.9 million. The Company incurred approximately $6.7 million of transaction costs in connection with the Asset Acquisition.

The Company expects to account for the Asset Acquisition as an asset acquisition. Transaction costs are expected to be capitalized as part of the total cost of the Asset Acquisition. The Company is in the process of evaluating the assets acquired and any liabilities assumed and has not finalized the allocation of the consideration. Accordingly, the Company cannot reasonably estimate the financial statement impact of the transaction as of the date these consolidated financial statements were issued.

Pursuant to the Asset Purchase Agreement, Factor has made a funding commitment (the “Funding Commitment”) to provide the Company with financial support for at least 18 months following the Erigen Closing, up to a maximum amount of $20.0 million that is inclusive of any amounts raised and received by us after the date of the Asset Purchase Agreement, on the terms and subject to the conditions and other provisions of a funding commitment letter contemplated by and entered into concurrently with the Asset Purchase Agreement.

Warrant Dividend

On January 20, 2026, the Company’s Board of Directors declared a record date of January 30, 2026 (the “Record Date”), for the distribution of a dividend (the “Warrant Dividend”) in the form of a warrant to purchase a share of the Company’s common stock (collectively, the “Warrants”) for each share of common stock outstanding on the Record Date at an exercise price of $18.48 per share. The Warrants were issued on the terms and conditions described in the Warrant Agreement, dated February 3, 2026, between the Company, Computershare Inc., and its affiliate, Computershare Trust Company, N.A., as Warrant Agent, on February 3, 2026. In addition, on February 3, 2026, certain warrants that were outstanding on the Record Date also received Warrants on a one-for-one basis, pursuant to the terms of such warrants (together with the Warrant Dividend, the “Warrant Distribution”). In the aggregate, 6,784,989 Warrants were issued pursuant to the Warrant Distribution.

Equity Plan Amendment

On January 27, 2026, the Company’s stockholders approved Amendment No. 1 to the 2023 Plan to increase the number of shares of the Company’s common stock issuable under such plan by 1,410,000 shares.

Rights Plan Approval

On January 27, 2026, the Company’s stockholders approved the Company’s Rights Agreement. Such stockholder approval extended the final expiration date of the Rights Agreement until October 10, 2026, unless the rights thereunder are earlier redeemed or exchanged by the Company. The Rights Agreement otherwise remains unmodified and in full force and effect in accordance with its terms.

Employment Agreements

In connection with his appointment as President and Chief Executive Officer of the Company, effective February 3, 2026, the Company entered into an employment agreement with Matthew Angel (the “Angel Employment Agreement”). Pursuant to the

Angel Employment Agreement, Dr. Angel is entitled to receive an annual base salary of $650,000 and will be eligible to receive an annual bonus equal to 50% of his base salary, as determined by the Board in its sole discretion. In addition, on February 3, 2026, Dr. Angel received an option to purchase 269,621 shares of common stock, with an exercise price per share equal to the fair market value on the grant date (the “Option”). The Option vests over a four-year period, with one quarter (1/4) of the shares subject to the Option vesting on the first anniversary of the grant date, and the remaining shares vesting equally over the following 36 months of continuous service.

On February 3, 2026, the Company entered into an employment agreement with Nicholas Maestas (the “Maestas Employment Agreement”), pursuant to which Mr. Maestas is entitled to receive compensation consistent with his previously filed employment agreement.

Private Placement

On March 20, 2026, the Company entered into a securities purchase agreement (the “Purchase Agreement”) with (a) two institutional investors (the “Institutional Investors”) and (b) Factor Bioscience Inc. (together with the Institutional Investors, each, an “Investor” and, together, the “Investors”), pursuant to which the Company agreed to issue and sell in a private placement (the “Private Placement”) an aggregate of 462,964 shares (the “Shares”) of the Company’s common stock, and, in lieu of common stock, pre-funded warrants to purchase up to 462,963 shares of common stock (the “2026 Pre-Funded Warrants”), in each case accompanied by (i) Series A warrants to purchase up to 925,927 shares of common stock (the “Series A Warrants”) and (ii) Series B warrants to purchase up to 925,927 shares of common stock (the “Series B Warrants” and, together with the Series A Warrants, the “Common Warrants”). The Shares and the Common Warrants are immediately separable and were issued separately. The combined purchase price per Share and accompanying Common Warrants was $2.16 and the combined purchase price per Pre-Funded Warrant and accompanying Common Warrants was $2.159. The gross proceeds to us from the Private Placement were approximately $2.0 million (excluding up to approximately $4.0 million of aggregate gross proceeds that may be received in the future upon the cash exercise of the Common Warrants), before deducting placement agent fees and other offering expenses payable by the Company.

Pursuant to the Purchase Agreement, the Company agreed to seek approval from our stockholders for the issuance of the shares issuable upon exercise of the Common Warrants within 90 days following the date of the Purchase Agreement (the “Stockholder Approval”). The Series A Warrants will become exercisable on the effective date of the Stockholder Approval (the “Stockholder Approval Date”) and have a term of five years from the later of the Stockholder Approval Date and the Effectiveness Date (as defined below). The Series B Warrants will become exercisable on the Stockholder Approval Date and have a term of twenty-four months from the later of the Stockholder Approval Date and the Effectiveness Date. The Common Warrants have an exercise price of $2.16 per share. The Pre-Funded Warrants are exercisable immediately following the closing date of the Private Placement have an exercise price of $0.001 per share and may be exercised at any time until exercised in full. In addition, pursuant to the Purchase Agreement, the Company agreed not to sell any shares of the Company’s common stock or any securities convertible into or exercisable or exchangeable into shares of common stock, subject to certain customary exceptions, for a period of thirty (30) days after the Effectiveness Date.

In connection with the Private Placement, the Company entered into a registration rights agreement with the Investors (the “Registration Rights Agreement”), pursuant to which the Company agreed to file registration statements under the Securities Act with the SEC covering the resale of the Shares to be issued in the Private Placement and the shares of the Company’s common stock underlying the Common Warrants and Pre-Funded Warrants no later than 15 calendar days following the date of the Purchase Agreement, and to use reasonable best efforts to have the registration statement declared effective by 45 calendar days following the date of the Purchase Agreement, and in any event no later than 75 calendar days following the date of the Purchase Agreement in the event of a “full review” by the SEC (the “Effectiveness Date”).