<SEC-DOCUMENT>0001104659-26-033028.txt : 20260323
<SEC-HEADER>0001104659-26-033028.hdr.sgml : 20260323
<ACCEPTANCE-DATETIME>20260323073115
ACCESSION NUMBER:		0001104659-26-033028
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20260319
FILED AS OF DATE:		20260323
DATE AS OF CHANGE:		20260323

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Duran Felipe
		CENTRAL INDEX KEY:			0001964267
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35023
		FILM NUMBER:		26779902

	MAIL ADDRESS:	
		STREET 1:		8800 HSC PARKWAY
		CITY:			BRYAN
		STATE:			TX
		ZIP:			77807

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			iBio, Inc.
		CENTRAL INDEX KEY:			0001420720
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				262797813
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		600 MADISON AVENUE, SUITE 1601
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022-1737
		BUSINESS PHONE:		302 355-0650

	MAIL ADDRESS:	
		STREET 1:		600 MADISON AVENUE, SUITE 1601
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022-1737

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	iBioPharma, Inc.
		DATE OF NAME CHANGE:	20080806

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	InB:Biotechnologies, Inc.
		DATE OF NAME CHANGE:	20071210
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tm269462-2_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-03-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001420720</issuerCik>
        <issuerName>iBio, Inc.</issuerName>
        <issuerTradingSymbol>IBIO</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001964267</rptOwnerCik>
            <rptOwnerName>Duran Felipe</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O IBIO, INC., 11750 SORRENTO VALLEY</rptOwnerStreet1>
            <rptOwnerStreet2>ROAD, SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>SAN DIEGO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92121</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-03-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>24835</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.0186</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35974</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of the Issuer's common stock purchased by the Reporting Person in multiple transactions at prices ranging from $2.01 through $2.02, inclusive, having a weighted average price as shown in column 4 of $2.0186. The Reporting Person undertakes to provide to the registrant, any security holder of the registrant, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of common stock sold at each separate price within the range.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Felipe Duran</signatureName>
        <signatureDate>2026-03-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
