X0609 4 2026-06-12 0001422142 Whitehawk Therapeutics, Inc. WHWK 0001355758 Castelein Caley false C/O WHITEHAWK THERAPEUTICS, INC. 2 HEADQUARTERS PLAZA, EAST BUILDING, 11T MORRISTOWN NJ 07960 true false false false 0 Stock Option (right to buy) 4.16 2026-06-12 4 A 0 38040 0 A 2036-06-12 Common Stock 38040 38040 D Subject to the Reporting Person continuing to be a Service Provider (as defined in the Issuer's 2021 Equity Incentive Plan) through such applicable date, one hundred percent (100%) of the shares subject to the option shall vest on the earlier of (i) the one (1) year anniversary of the Date of Grant or (ii) the day immediately prior to the next annual meeting of stockholders following the Date of Grant. "Date of Grant" shall mean June 12, 2026. /s/ Stephen Rodin, as Attorney-in-Fact 2026-06-15