<SEC-DOCUMENT>0001104659-25-047916.txt : 20250513
<SEC-HEADER>0001104659-25-047916.hdr.sgml : 20250513
<ACCEPTANCE-DATETIME>20250513175345
ACCESSION NUMBER:		0001104659-25-047916
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250512
FILED AS OF DATE:		20250513
DATE AS OF CHANGE:		20250513

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Marchuk Neil Edward
		CENTRAL INDEX KEY:			0001301291
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03610
		FILM NUMBER:		25941832

	MAIL ADDRESS:	
		STREET 1:		201 ISABELLA STREET
		STREET 2:		SUITE 200
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15212

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Howmet Aerospace Inc.
		CENTRAL INDEX KEY:			0000004281
		STANDARD INDUSTRIAL CLASSIFICATION:	ROLLING DRAWING & EXTRUDING OF NONFERROUS METALS [3350]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				250317820
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		201 ISABELLA STREET
		STREET 2:		SUITE 200
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15212-5872
		BUSINESS PHONE:		(412) 553-1940

	MAIL ADDRESS:	
		STREET 1:		201 ISABELLA STREET
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15212-5872

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Arconic Inc.
		DATE OF NAME CHANGE:	20161101

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALCOA INC.
		DATE OF NAME CHANGE:	20141003

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALCOA INC
		DATE OF NAME CHANGE:	19990105
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tm2515004-1_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-05-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000004281</issuerCik>
        <issuerName>Howmet Aerospace Inc.</issuerName>
        <issuerTradingSymbol>HWM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001301291</rptOwnerCik>
            <rptOwnerName>Marchuk Neil Edward</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>201 ISABELLA STREET SUITE 200</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PITTSBURGH</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15212-5872</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, HR</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-05-12</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>30000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>158.5339</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>131859</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Trust</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in column 4 is a weighted average price. The shares are sold in multiple transactions at prices ranging from $156.00 to $161.45. The reporting person undertakes to provide Howmet Aerospace Inc. (&quot;Howmet&quot;), any security holder of Howmet, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the range set forth in this footnote.</footnote>
        <footnote id="F2">Shares held in a revocable trust, of which the reporting person is trustee and beneficiary, and has voting and investment power.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Margaret Lam, Assistant Secretary (Attorney-in-Fact)</signatureName>
        <signatureDate>2025-05-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
