X0609 4 2026-10-01 0001869105 BridgeBio Oncology Therapeutics, Inc. BBOT 0002058437 Elmelech Idan false BRIDGEBIO ONCOLOGY THERAPEUTICS, INC. 256 EAST GRAND AVENUE, SUITE 104 SOUTH SAN FRANCISCO CA 94080 false true false false COO & Principal Financial Ofcr false Common Stock 2026-10-01 4 F false 343 3.94 D 14152 D Represents the number of shares of the Issuer's Common Stock withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units. /s/ Aaron Chan, Attorney-in-Fact 2026-10-05