144 0001055951 XXXXXXXX LIVE 0001787297 Passage BIO, Inc. 001-39231 One Commerce Square 2005 Market Street, 39th Floor Philadelphia PA 19103 267-866-0312 OrbiMed Private Investments VII, LP Stockholder Common Stock Themis Trading LLC

10 Town Square Suite 100 Chatham NJ 07928

1076120 378364.00 62148274 06/24/2025 Nasdaq Stock Market Common Stock 03/03/2020 IPO Issuer N 1076120 03/03/2020 N/A N OrbiMed Private Investments VII, LP

601 Lexington Ave., 54th Floor New York NY 10022

Common Stock 04/15/2025 10326 3924.00 OrbiMed Private Investments VII, LP

601 Lexington Ave., 54th Floor New York NY 10022

Common Stock 04/16/2025 61638 20341.00 OrbiMed Private Investments VII, LP

601 Lexington Ave., 54th Floor New York NY 10022

Common Stock 04/17/2025 77090 25440.00 OrbiMed Private Investments VII, LP

601 Lexington Ave., 54th Floor New York NY 10022

Common Stock 04/22/2025 78049 26537.00 OrbiMed Private Investments VII, LP

601 Lexington Ave., 54th Floor New York NY 10022

Common Stock 04/23/2025 89328 30372.00 OrbiMed Private Investments VII, LP

601 Lexington Ave., 54th Floor New York NY 10022

Common Stock 04/24/2025 68195 21822.00 OrbiMed Capital GP VII LLC is the general partner of OrbiMed Private Investments VII, LP. OrbiMed Advisors LLC is the managing member of OrbiMed Capital GP VII LLC. 06/24/2025 /s/ Douglas Coon, Chief Compliance Officer, OrbiMed Advisors LLC, managing member of the general partner of OrbiMed Private Investments VII, LP