144 0001627639 XXXXXXXX LIVE 0001770121 Sana Biotechnology, Inc 001-39941 188 East Blaine St, Ste 400 Seattle WA 98102 2067017914 FLAGSHIP VENTURES FUND V, L.P. Affiliate Common J.P. Morgan Securities LLC

390 Madison Avenue 6th Floor New York NY 10017

310170 1981986 191500944 06/07/2023 Nasdaq Common 05/12/2017 Venture Capital Investment Issuer N 310170 05/12/2017 Cash N FLAGSHIP VENTURES FUND V, L.P.

188 East Blaine St, Ste 400 Seattle WA 98102

Common 05/24/2023 308290 2008792 FLAGSHIP VENTURES FUND V, L.P.

188 East Blaine St, Ste 400 Seattle WA 98102

Common 05/25/2023 102245 644368 FLAGSHIP VENTURES FUND V, L.P.

188 East Blaine St, Ste 400 Seattle WA 98102

Common 05/26/2023 72670 488837 FLAGSHIP VENTURES FUND V, L.P.

188 East Blaine St, Ste 400 Seattle WA 98102

Common 06/06/2023 181461 1144311 06/07/2023 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for FLAGSHIP VENTURES FUND V, L.P.