144 0002065633 XXXXXXXX LIVE 0001817241 Artiva Biotherapeutics, Inc. 001-42179 5505 Morehouse Drive, Suite 100 San Diego CA 92121 8582674467 SUBHASHIS BANERJEE Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

833 9779.42 48890121 08/18/2026 NASDAQ Common 08/18/2026 Exercise of Stock Options Issuer N 833 08/18/2026 Cash N SUBHASHIS BANERJEE

5505 Morehouse Drive, Suite 100 San Diego CA 92121

Common 05/19/2026 7037 63386.48 The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale. 08/18/2026 05/14/2026 /s/ Subhashis Banerjee