<SEC-DOCUMENT>0001104659-26-055643-index.html : 20260505
<SEC-HEADER>0001104659-26-055643.hdr.sgml : 20260505
<ACCEPTANCE-DATETIME>20260505161519
ACCESSION NUMBER:		0001104659-26-055643
CONFORMED SUBMISSION TYPE:	SCHEDULE 13D
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20260505
DATE AS OF CHANGE:		20260505

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Zenas BioPharma, Inc.
		CENTRAL INDEX KEY:			0001953926
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-94625
		FILM NUMBER:		26943370

	BUSINESS ADDRESS:	
		STREET 1:		852 WINTER STREET, SUITE 250
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
		BUSINESS PHONE:		857-271-2954

	MAIL ADDRESS:	
		STREET 1:		852 WINTER STREET, SUITE 250
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Zenas BioPharma (Cayman) Ltd
		DATE OF NAME CHANGE:	20221108

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MOULDER LEON O JR
		CENTRAL INDEX KEY:			0001228865
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13D

	MAIL ADDRESS:	
		STREET 1:		C/O TESARO, INC.
		STREET 2:		1000 WINTER STREET, SUITE 3300
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1
<SEQUENCE>2
<FILENAME>tm2613598d1_ex1.htm
<DESCRIPTION>EXHIBIT 1
<TEXT>
Document 2 - file: tm2613598d1_ex1.htm

</DOCUMENT>
</SEC-DOCUMENT>