X0508 4 2026-02-26 0002100782 Generate Biomedicines, Inc. GENB 0001443340 Bancel Stephane GENERATE BIOMEDICINES, INC. 101 SOUTH STREET, SUITE 900 SOMERVILLE MA 02143 true false false false false Common Stock 2026-03-02 4 C false 724160 A 724160 I By OCHA LLC Common Stock 460829 D Stock Option (Right to Buy) 16 2026-02-26 4 A false 29561 0 A 2036-02-25 Common Stock 29561 29561 D Series A Preferred Stock 2026-03-02 4 C false 1100000 0 D Common Stock 724160 0 I By OCHA LLC Each share of Series A Preferred Stock automatically converted into shares of the Issuer's Common Stock on a one-for-1.5190 basis upon the closing of the Issuer's initial public offering on March 2, 2026. The Series A Preferred Stock had no expiration date. Shares held by OCHA LLC, of which the Reporting Person is the controlling unit holder and sole managing member. The Reporting Person disclaims beneficial ownership of such shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that he is a beneficial owner of such shares for the purpose of Section 16 of the Exchange Act, or for any other purpose. The shares underlying this option shall vest in full on February 19, 2027, subject to the Reporting Person's continued service on such vesting date. /s/ Michael Wolf, Attorney-in-Fact 2026-03-02