X0206 3 2021-02-03 0 0001770121 Sana Biotechnology, Inc. SANA 0001309988 Yang Patrick Y C/O SANA BIOTECHNOLOGY, INC. 188 EAST BLAINE STREET, SUITE 400 SEATTLE WA 98102 1 0 0 0 Common Stock 146250 D Exhibit 24 - Power of Attorney. /s/ James J. MacDonald, Attorney-in-Fact for Patrick Y. Yang 2021-02-03