X0609 4 2026-10-05 0001817241 Artiva Biotherapeutics, Inc. ARTV 0002065633 Banerjee Subhashis false C/O ARTIVA BIOTHERAPEUTICS, INC. 5505 MOREHOUSE DRIVE, SUITE 100 SAN DIEGO CA 92121 false true false false Chief Medical Officer false Common Stock 2026-10-05 4 S false 1099 6.8372 D 169848 D The Issuer has adopted a 'sell-to-cover' policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and release of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person. /s/ Jennifer Bush, Attorney-in-Fact 2026-10-06