144 0001639481 XXXXXXXX LIVE 0001816590 COMPASS Pathways plc 001-39522 3RD FLOOR, 1 ASHLEY ROAD ALTRINCHAM CHESIRE X0 WA14 2DT 1-716-676-6461 Jenkins Annalisa Former Director American Depositary Shares Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

83771 1149152.80 138476822 08/07/2026 NASDAQ American Depositary Shares 08/07/2026 Stock Option Exercise Issuer N 83771 08/07/2026 Cash Y 08/07/2026 /s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Annalisa Jenkins