X0609 4 2026-09-03 0001817241 Artiva Biotherapeutics, Inc. ARTV 0001621152 Bush Jennifer false C/O ARTIVA BIOTHERAPEUTICS, INC. 5505 MOREHOUSE DRIVE, SUITE 100 SAN DIEGO CA 92121 false true false false COO, CLO, Compliance Officer false Common Stock 2026-09-03 4 S false 8391 11.1555 D 329529 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. The weighted average sale price for the transaction reported was $11.1555, and the range of prices were between $11.0350 and $11.1556. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided. /s/ Andrew Cronauer, Attorney-in-Fact 2026-09-04