X0508 4 2024-02-12 0001770121 Sana Biotechnology, Inc. SANA 0001400240 Flagship Pioneering Inc. 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 false false true false 0001222012 AFEYAN NOUBAR 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 false false true false false Pre-Funded Warrants to purchase Common Stock 0.0001 2024-02-12 4 P false 2727272 5.4999 A 2024-02-12 Common Stock 2727272 2727272 I By Flagship Pioneering Fund VII, L.P. On February 12, 2024, pursuant to an underwritten public offering by the Issuer, Flagship Pioneering Fund VII, L.P. ("Flagship Fund VII") acquired pre-funded warrants to purchase 2,727,272 shares of Common Stock (the "Pre-Funded Warrants") at a purchase price of $5.4999 per Pre-Funded Warrant. The Pre-Funded Warrants do not have an expiration date. Shares held by Flagship Fund VII. Flagship Pioneering Fund VII General Partner LLC ("Flagship Fund VII GP") is the general partner of Flagship Fund VII. Flagship Pioneering, Inc. ("Flagship Pioneering") is the manager of Flagship Fund VII GP. Noubar B. Afeyan, Ph.D. is the Chief Executive Officer, sole shareholder and director of Flagship Pioneering. Each of the reporting persons except Flagship Fund VII disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, if any. Flagship Pioneering, Inc., By: /s/ Noubar B. Afeyan, Ph.D., Title: CEP 2024-02-14 /s/ Noubar B. Afeyan, Ph.D. 2024-02-14