X0508 4 2025-12-12 0001817241 Artiva Biotherapeutics, Inc. ARTV 0002028466 Raymon Heather C/O ARTIVA BIOTHERAPEUTICS, INC. 5505 MOREHOUSE DRIVE, SUITE 100 SAN DIEGO CA 92121 false true false false SVP, Research and Development false Common Stock 2025-12-12 4 A false 67253 0 A 106844 D Employee Stock Option (Right to Buy) 5.14 2025-12-12 4 D false 18239 D 2030-11-02 Common Stock 18239 0 D Employee Stock Option (Right to Buy) 5.01 2025-12-12 4 D false 12539 D 2033-04-02 Common Stock 12539 0 D Employee Stock Option (Right to Buy) 5.01 2025-12-12 4 D false 14819 D 2033-04-02 Common Stock 14819 0 D Employee Stock Option (Right to Buy) 5.18 2025-12-12 4 D false 11399 D 2034-01-23 Common Stock 11399 0 D Employee Stock Option (Right to Buy) 13.47 2025-12-12 4 D false 10259 D 2034-05-01 Common Stock 10259 0 D Represents restricted stock units award granted under the Issuer's 2024 Equity Incentive Plan ("RSUs"). On December 12, 2025, the Issuer cancelled, pursuant to an option exchange, the options listed in Table II. In exchange for the cancelled options, the Reporting Person received the RSUs reported in Table I. 25% of the shares vested on October 22, 2021, and the remaining shares vest in 36 equal monthly installments thereafter. 25% of the shares vested on January 1, 2024, and the remaining shares vest in 36 equal monthly installments thereafter. 25% of the shares vested on February 22, 2022, and the remaining shares vest in 36 equal monthly installments thereafter. Vesting is monthly over a 48-month period starting January 1, 2024 in equal monthly amounts. 25% of the shares will vest on July 19, 2025, and the remaining shares vest in 36 equal monthly installments thereafter. /s/ Andrew Cronauer, Attorney-in-Fact 2025-12-12