X0609 4 2026-05-06 0001464521 Heartflow, Inc. HTFL 0001585724 Rogers Campbell false C/O HEARTFLOW, INC. 135 MAIN STREET, SUITE 1000 SAN FRANCISCO CA 94105 1 Chief Medical Officer 0 Common Stock 2026-05-06 4 F 0 1634 30.29 D 79368 D Common Stock 2026-05-07 4 F 0 637 29.98 D 78731 D Common Stock 22615 I By Campbell Rogers 2019 Irrevocable Trust Common Stock 46159 I By CR Asset Protection Trust of 2023 Common Stock 26012 I By Spouse's Trust Common Stock 50754 I By The Campbell Rogers Revocable Trust Represents shares that have been retained by the Issuer to satisfy income tax withholding and remittance obligations in connection with the vesting and net settlement of restricted stock units previously reported. /s/ Nga Van, by power of attorney 2026-05-08