<SEC-DOCUMENT>0001104659-24-099449.txt : 20240912
<SEC-HEADER>0001104659-24-099449.hdr.sgml : 20240912
<ACCEPTANCE-DATETIME>20240912213551
ACCESSION NUMBER:		0001104659-24-099449
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20240912
FILED AS OF DATE:		20240912
DATE AS OF CHANGE:		20240912

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Oliveira Orlando
		CENTRAL INDEX KEY:			0001699305
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-42270
		FILM NUMBER:		241296305

	MAIL ADDRESS:	
		STREET 1:		1000 WINTER STREET
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

ISSUER:		

	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

	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>3
<SEQUENCE>1
<FILENAME>tm2423876-1_3seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2024-09-12</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001953926</issuerCik>
        <issuerName>Zenas BioPharma, Inc.</issuerName>
        <issuerTradingSymbol>ZBIO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001699305</rptOwnerCik>
            <rptOwnerName>Oliveira Orlando</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ZENAS BIOPHARMA, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1000 WINTER STREET, SUITE 1200</rptOwnerStreet2>
            <rptOwnerCity>WALTHAM</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02451</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Commercial Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>Exhibit List: Exhibit 24 - Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>By: /s/ Chase Jayasekera, Attorney-in-Fact</signatureName>
        <signatureDate>2024-09-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>tm2423876d1_ex24.htm
<DESCRIPTION>EXHIBIT 24
<TEXT>
<HTML>
<HEAD>
     <TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="text-align: right; margin: 0"><B>Exhibit 24</B></P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>LIMITED POWER OF ATTORNEY</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The undersigned hereby constitutes
and appoints Jeffrey Held and Chase Jayasekera, and each of them individually, with full power of substitution, as the undersigned&rsquo;s
true and lawful attorney-in-fact to:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(1)</TD><TD STYLE="text-align: justify">prepare, execute in the undersigned&rsquo;s name and on the undersigned&rsquo;s behalf, and submit to
the U.S. Securities and Exchange Commission (the &ldquo;SEC&rdquo;) a Form&nbsp;ID, including amendments thereto, and any other documents
necessary or appropriate to obtain codes and passwords enabling the undersigned to make electronic filings with the SEC of reports required
by Section&nbsp;16(a)&nbsp;of the Securities Exchange Act of 1934, as amended, or any rule&nbsp;or regulation of the SEC;</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(2)</TD><TD STYLE="text-align: justify">execute for and on behalf of the undersigned, in the undersigned&rsquo;s capacity as officer and/or director
of Zenas BioPharma,&nbsp;Inc. (the &ldquo;Company&rdquo;), Forms&nbsp;3, 4, 5 and any Schedules 13D or 13G in accordance with Section&nbsp;16(a)&nbsp;of
the Securities Exchange Act of 1934, as amended, and the rules&nbsp;thereunder;</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(3)</TD><TD STYLE="text-align: justify">do and perform any and all acts for and on behalf of the undersigned that may be necessary or desirable
to complete and execute any such Form&nbsp;3, 4, or 5 or Schedule 13D or 13G, complete and execute any amendment or amendments thereto,
and timely file such form with the SEC and any stock exchange or similar authority; and</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(4)</TD><TD STYLE="text-align: justify">take any other action of any type whatsoever in connection with the foregoing that, in the opinion of
each such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood
that the documents executed by each such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in
such form and shall contain such terms and conditions as each such attorney-in-fact may approve in each such attorney-in-fact&rsquo;s
discretion.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The undersigned hereby grants
to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary,
or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned
might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that each
such attorney-in-fact, or each such attorney-in-fact&rsquo;s substitute or substitutes, shall lawfully do or cause to be done by virtue
of this power of attorney and the rights and powers herein granted. The undersigned acknowledges that each foregoing attorney-in-fact,
in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned&rsquo;s
responsibilities to comply with Section&nbsp;16 of the Securities Exchange Act of 1934, as amended.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This Power of Attorney shall
remain in full force and effect until the undersigned is no longer required to file Forms&nbsp;3, 4, 5, and any Schedules 13D or 13G with
respect to the undersigned&rsquo;s holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned
in a signed writing delivered to each foregoing attorney-in-fact.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[<I>Remainder of page&nbsp;intentionally left blank</I>]</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<!-- Field: Page; Sequence: 1 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"></P></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">IN WITNESS WHEREOF, the undersigned has caused
this Power of Attorney to be executed as of this 12th day of September, 2024.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font-size: 10pt; width: 50%"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; width: 50%; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">/s/ Orlando Oliveira&nbsp;</FONT></TD></TR>
  <TR STYLE="font-size: 10pt; vertical-align: bottom">
    <TD STYLE="font-size: 10pt"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Name: Orlando Oliveira</FONT></TD></TR>
  </TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<!-- Field: Page; Sequence: 2; Options: Last -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"></P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
