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<REFERENCE-462B>333-294989
FILED AS OF DATE:		20260430
DATE AS OF CHANGE:		20260430
EFFECTIVENESS DATE:		20260430

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Hemab Therapeutics Holdings, Inc.
		CENTRAL INDEX KEY:			0002114044
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				414241952
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-1MEF
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-295466
		FILM NUMBER:		26927187

	BUSINESS ADDRESS:	
		STREET 1:		101 MAIN STREET
		STREET 2:		SUITE 1220
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
		BUSINESS PHONE:		45 2138 7627

	MAIL ADDRESS:	
		STREET 1:		101 MAIN STREET
		STREET 2:		SUITE 1220
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
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