<SEC-DOCUMENT>0000950142-26-001249.txt : 20260501
<SEC-HEADER>0000950142-26-001249.hdr.sgml : 20260501
<ACCEPTANCE-DATETIME>20260501170251
ACCESSION NUMBER:		0000950142-26-001249
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20260429
FILED AS OF DATE:		20260501
DATE AS OF CHANGE:		20260501

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Painter Corning F.
		CENTRAL INDEX KEY:			0001519239
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36563
		FILM NUMBER:		26933637

	MAIL ADDRESS:	
		STREET 1:		C/O ORION S.A.
		STREET 2:		1700 CITY PLAZA DRIVE, SUITE 300
		CITY:			SPRING
		STATE:			TX
		ZIP:			77389

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Orion S.A.
		CENTRAL INDEX KEY:			0001609804
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS CHEMICAL PRODUCTS [2890]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				000000000
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1700 CITY PLAZA DRIVE, SUITE 300
		CITY:			SPRING
		STATE:			TX
		ZIP:			77389
		BUSINESS PHONE:		(281) 381-2959

	MAIL ADDRESS:	
		STREET 1:		1700 CITY PLAZA DRIVE, SUITE 300
		CITY:			SPRING
		STATE:			TX
		ZIP:			77389

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Orion Engineered Carbons S.A.
		DATE OF NAME CHANGE:	20140728

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Orion Engineered Carbons S.a r.l.
		DATE OF NAME CHANGE:	20140603
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>es260774388_4-painter.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-04-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001609804</issuerCik>
        <issuerName>Orion S.A.</issuerName>
        <issuerTradingSymbol>OEC</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001519239</rptOwnerCik>
            <rptOwnerName>Painter Corning F.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O ORION S.A.</rptOwnerStreet1>
            <rptOwnerStreet2>1700 CITY PLAZA DRIVE, SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>SPRING</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77389</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares, no par value</value>
            </securityTitle>
            <transactionDate>
                <value>2026-04-29</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>220849</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1303043</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">RSUs granted to the reporting person on April 29, 2026. Granted RSUs will vest ratably on January 1st for calendar years 2027, 2028 and 2029.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Corning F. Painter</signatureName>
        <signatureDate>2026-05-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
