<SEC-DOCUMENT>0000947871-25-000512.txt : 20250514
<SEC-HEADER>0000947871-25-000512.hdr.sgml : 20250514
<ACCEPTANCE-DATETIME>20250514212017
ACCESSION NUMBER:		0000947871-25-000512
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20250513
FILED AS OF DATE:		20250514
DATE AS OF CHANGE:		20250514

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Koeppen Christopher
		CENTRAL INDEX KEY:			0001781635
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39375
		FILM NUMBER:		25948201

	MAIL ADDRESS:	
		STREET 1:		C/O COHERENT CORP.
		STREET 2:		375 SAXONBURG BOULEVARD
		CITY:			SAXONBURG
		STATE:			PA
		ZIP:			16056

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COHERENT CORP.
		CENTRAL INDEX KEY:			0000820318
		STANDARD INDUSTRIAL CLASSIFICATION:	OPTICAL INSTRUMENTS & LENSES [3827]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				251214948
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		375 SAXONBURG BLVD
		CITY:			SAXONBURG
		STATE:			PA
		ZIP:			16056
		BUSINESS PHONE:		724-352-4455

	MAIL ADDRESS:	
		STREET 1:		375 SAXONBURG BLVD
		CITY:			SAXONBURG
		STATE:			PA
		ZIP:			16056

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	II-VI INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-05-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000820318</issuerCik>
        <issuerName>COHERENT CORP.</issuerName>
        <issuerTradingSymbol>COHR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001781635</rptOwnerCik>
            <rptOwnerName>Koeppen Christopher</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O COHERENT CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>375 SAXONBURG BLVD.</rptOwnerStreet2>
            <rptOwnerCity>SAXONBURG</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>16056</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP of Aerospace &amp; Defense</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>1</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-05-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6154</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>36.56</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>61492</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-05-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6154</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>80.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>55338</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-05-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2581</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>80.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>52757</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-05-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2545</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>80.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>50212</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Daughter</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Son</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Option (Right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>36.56</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-05-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6154</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2029-08-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>6154</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6154</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The sale transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 9, 2024.</footnote>
        <footnote id="F2">The options fully vested in four equal annual installments beginning on August 28, 2020.</footnote>
    </footnotes>

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

    <ownerSignature>
        <signatureName>/s/ Christopher M. Forrester, Attorney-in-Fact</signatureName>
        <signatureDate>2025-05-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ss4824838_ex24.htm
<DESCRIPTION>SUBSTITUTE POWER OF ATTORNEY
<TEXT>
<HTML>
<HEAD>
<TITLE></TITLE>
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<BODY>


<P STYLE="font: bold 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center">&nbsp;</P>

<P STYLE="font: bold 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center">SUBSTITUTE POWER OF ATTORNEY</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in">Under the terms of powers of attorney (each,
a &ldquo;Power of Attorney&rdquo;) previously filed with the U.S. Securities and Exchange Commission, the undersigned, Jeffrey W. Acre
was appointed an attorney-in-fact to, among other things, execute for and on behalf of the following individuals any Forms 3, 4 and 5
or any amendments thereto, in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended, and the rules thereunder:</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in">Christopher Koeppen</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in">Giovanni Barbarossa</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in">Michael L. Dreyer</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in">Patricia Hatter</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in">Lisa Neal-Graves</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in">Shaker Sadasivam</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in">Howard H. Xia</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in">Joseph J. Corasanti</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt 0.5in">Enrico Digirolamo</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in">In accordance with the authority granted under
each Power of Attorney, including the full power of substitution, the undersigned hereby appoints Aaron Wax, Chris Forrester and Yian
Huang as substitute attorneys-in-fact, on behalf of the individuals listed above, with the power to exercise and execute all of the powers
granted or conferred in the original Power of Attorney. By their signatures as attorneys-in-fact to this Substitute Power of Attorney,
Aaron Wax, Chris Forrester and Yian Huang accept such appointment and agree to assume from the undersigned any and all duties and responsibilities
attendant to their capacity as attorneys-in-fact.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in">This Substitute Power of Attorney shall remain
in full force and effect until the underlying Power of Attorney is revoked or terminated, unless earlier revoked by the undersigned in
a signed writing.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0.5in">IN WITNESS WHEREOF, the undersigned has caused
this Substitute Power of Attorney to be executed as of March <U>18</U>, 2025.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt 0.5in">Signature: <U>/s/ Jeffrey W. Acre&#9;</U><BR>
Name: Jeffrey W. Acre</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0in">We accept this appointment and substitution:</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt 0.5in">Signature: <U>/s/ Aaron Wax&#9;</U><BR>
Name: Aaron Wax</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt 0.5in">Signature: <U>/s/ Chris Forrester&#9;</U><BR>
Name: Chris Forrester</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt 0.5in">Signature: <U>/s/ Yian Huang&#9;</U><BR>
Name: Yian Huang</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 3pt; margin-bottom: 3pt; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"></P>


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</DOCUMENT>
</SEC-DOCUMENT>
