144 0001621152 XXXXXXXX LIVE 0001817241 ARTIVA BIOTHERAPEUTICS, INC. 001-42179 5505 MOREHOUSE DRIVE, SUITE 100 SAN DIEGO CA 92121 (858) 267-4467 Jennifer Bush Officer Director Common Stock Morgan Stanley Smith Barney LLC

1 New York Plaza, 8th Floor New York NY 10004

9000 82980 48588198 05/18/2026 NASDAQ Common Stock 05/15/2026 Restricted Stock Units vesting under registered plan Issuer N 9000 05/15/2026 Compensation for services rendered to Issuer Y This is a sell-to-cover transaction for taxes owed related to recent vesting of stock unit awards granted by the Issuer. 05/18/2026 /s/ Jennifer Bush