<SEC-DOCUMENT>0001104659-24-099444-index.html : 20240912
<SEC-HEADER>0001104659-24-099444.hdr.sgml : 20240912
<ACCEPTANCE-DATETIME>20240912212209
ACCESSION NUMBER:		0001104659-24-099444
CONFORMED SUBMISSION TYPE:	S-1MEF
PUBLIC DOCUMENT COUNT:		5
<REFERENCE-462B>333-281713
FILED AS OF DATE:		20240912
DATE AS OF CHANGE:		20240912
EFFECTIVENESS DATE:		20240912

FILER:

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

	FILING VALUES:
		FORM TYPE:		S-1MEF
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-282082
		FILM NUMBER:		241296284

	BUSINESS ADDRESS:	
		STREET 1:		1000 WINTER ST, SUITE 1200
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
		BUSINESS PHONE:		857-271-2954

	MAIL ADDRESS:	
		STREET 1:		1000 WINTER ST, SUITE 1200
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Zenas BioPharma (Cayman) Ltd
		DATE OF NAME CHANGE:	20221108
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-1MEF
<SEQUENCE>1
<FILENAME>tm2332800d20_s1mef.htm
<DESCRIPTION>S-1MEF
<TEXT>
Document 1 - file: tm2332800d20_s1mef.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>tm2332800d20_ex5-1.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
Document 2 - file: tm2332800d20_ex5-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>tm2332800d20_ex23-1.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
Document 3 - file: tm2332800d20_ex23-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-FILING FEES
<SEQUENCE>4
<FILENAME>tm2332800d20_ex-filingfees.htm
<DESCRIPTION>EX-FILING FEES
<TEXT>
Document 4 - file: tm2332800d20_ex-filingfees.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>tm2332800d20_ex5-1img001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: tm2332800d20_ex5-1img001.jpg

</DOCUMENT>
</SEC-DOCUMENT>