X0609 4 2026-10-01 0 0002010788 EXOZYMES INC. EXOZ 0000897744 MARLETT CHRISTOPHER A false C/O 14133 MIDWAY ROAD, SUITE G-150 ADDISON TX 75001 1 0 1 0 0 Common Stock 3808476 I See Footnote Stock Option (right to buy) 6.28 2026-10-01 4 A 0 10000 0.00 A 2033-10-01 Common Stock 10000 10000 D The option vests in twelve (12) quarterly installments, consisting of eleven (11) installments of 833 shares and a final installment of 837 shares, beginning on 12/31/2026 and ending on 09/30/2029, subject to the reporting person's continued service with the issuer. The option expires on 10/01/2033. Shares are held by MDB Capital Holdings, LLC, over which the Reporting Person has voting and dispositive authority. The Reporting Person disclaims any interest in the shares except to the extent of his pecuniary interests in MDB Capital Holdings, LLC. /s/ Christopher Marlett 2026-10-19