X0609 4 2026-05-18 0001817241 Artiva Biotherapeutics, Inc. ARTV 0001773413 Miralles Gines Diego false C/O ARTIVA BIOTHERAPEUTICS, INC. 5505 MOREHOUSE DRIVE, SUITE 100 SAN DIEGO CA 92121 false true false false President & Head of R&D false Common Stock 2026-05-18 4 A false 77500 0 A 77500 D Employee Stock Option (Right to Buy) 9.22 2026-05-18 4 A false 232500 0 A 2036-05-17 Common Stock 232500 232500 D Represents restricted stock unit award granted under the Issuer's 2025 Inducement Plan. Represents stock option award granted under the Issuer's 2025 Inducement Plan. 25% of the shares initially subject to the option will vest and become exercisable on May 15, 2027, and the balance of the shares subject to the option shall vest and become exercisable at a rate of 1/36th per month over the following 36 months. /s/ Andrew Cronauer, Attorney-in-Fact 2026-05-19