Cover - shares	3 Months Ended
	Mar. 31, 2025	May 02, 2025
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2025
Document Transition Report	false
Entity File Number	001-38560
Entity Registrant Name	WHITEHAWK THERAPEUTICS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	61-1547850
Entity Address, Address Line One	2 Headquarters Plaza
Entity Address, Address Line Two	East Building, 11th Floor
Entity Address, City or Town	Morristown
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	7960
City Area Code	551
Local Phone Number	321-2234
Title of 12(b) Security	Common stock, $0.0001 par value per share
Trading Symbol	WHWK
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		47,109,293
Entity Central Index Key	0001422142
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q1
Amendment Flag	false