144 0001724939 XXXXXXXX LIVE 0001770121 Sana Biotechnology 001-39941 188 East Blaine St, Ste 400 Seattle WA 98102 206-701-7914 Flagship V Venturelabs RX Fund, L.P. Affiliate Common J.P. Morgan Securities LLC

390 Madison Avenue 6th Floor New York NY 10017

39830 254514 191500944 06/07/2023 Nasdaq Common 05/12/2017 Venture Capital Investment Issuer N 39830 05/12/2017 Cash N FLAGSHIP VENTURES FUND V, L.P.

188 East Blaine St, Ste 400 Seattle WA 98102

Common 05/24/2023 39580 257469 FLAGSHIP VENTURES FUND V, L.P.

188 East Blaine St, Ste 400 Seattle WA 98102

Common 05/25/2023 13127 82724 FLAGSHIP VENTURES FUND V, L.P.

188 East Blaine St, Ste 400 Seattle WA 98102

Common 05/26/2023 9330 57621 FLAGSHIP VENTURES FUND V, L.P.

188 East Blaine St, Ste 400 Seattle WA 98102

Common 06/06/2023 22297 140607 06/07/2023 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Flagship V Venturelabs RX Fund, L.P.