<SEC-DOCUMENT>0001127602-25-004334.txt : 20250212
<SEC-HEADER>0001127602-25-004334.hdr.sgml : 20250212
<ACCEPTANCE-DATETIME>20250212142251
ACCESSION NUMBER:		0001127602-25-004334
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250211
FILED AS OF DATE:		20250212
DATE AS OF CHANGE:		20250212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Begle Curt
		CENTRAL INDEX KEY:			0001559276
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03560
		FILM NUMBER:		25614152

	MAIL ADDRESS:	
		STREET 1:		9335 HARRIS CORNERS PARKWAY, SUITE 300
		STREET 2:		C/O MAGNERA CORPORATION
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28269

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Magnera Corp
		CENTRAL INDEX KEY:			0000041719
		STANDARD INDUSTRIAL CLASSIFICATION:	PAPER MILLS [2621]
		ORGANIZATION NAME:           	04 Manufacturing
		IRS NUMBER:				230628360
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			0927

	BUSINESS ADDRESS:	
		STREET 1:		9335 HARRIS CORNERS PKWY
		STREET 2:		SUITE 300
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28269
		BUSINESS PHONE:		866-744-7380

	MAIL ADDRESS:	
		STREET 1:		9335 HARRIS CORNERS PKWY
		STREET 2:		SUITE 300
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28269

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Glatfelter Corp
		DATE OF NAME CHANGE:	20200930

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GLATFELTER P H CO
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-02-11</periodOfReport>

    <issuer>
        <issuerCik>0000041719</issuerCik>
        <issuerName>Magnera Corp</issuerName>
        <issuerTradingSymbol>MAGN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001559276</rptOwnerCik>
            <rptOwnerName>Begle Curt</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9335 HARRIS CORNERS PKWY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28269</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <officerTitle>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, Par Value $.01</value>
            </securityTitle>
            <transactionDate>
                <value>2025-02-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>23786</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21.0753</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>24066</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>The Curtis L. Begle Living Trust</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, Par Value $.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2576</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>The Crue Meisler Begle Trust</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, Par Value $.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3083</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>The Curtis L. Begle 2022 GRAT</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of Issuer common stock held by The Curtis L. Begle Living Trust, of which the reporting person is beneficiary.  The reporting person serves as trustee of The Curtis L. Begle Living Trust.</footnote>
        <footnote id="F2">Represents shares of Issuer common stock held by The Crue Meisler Begle Trust, of which the reporting person's minor child is beneficiary.  The reporting person serves as trustee of The Crue Meisler Begle Trust.</footnote>
        <footnote id="F3">Represents shares of Issuer common stock held by The Curtis L. Begle 2022 Grantor Retained Annuity Trust, of which The Crue Meisler Begle Trust is beneficiary.  The reporting person serves as trustee of The Curtis Begle GRAT 2022.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Laura A. Jones, attorney-in-fact for Curt Begle</signatureName>
        <signatureDate>2025-02-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
