<SEC-DOCUMENT>0001104659-21-034445.txt : 20210310
<SEC-HEADER>0001104659-21-034445.hdr.sgml : 20210310
<ACCEPTANCE-DATETIME>20210310161212
ACCESSION NUMBER:		0001104659-21-034445
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210309
FILED AS OF DATE:		20210310
DATE AS OF CHANGE:		20210310

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PLANT JOHN C
		CENTRAL INDEX KEY:			0001136562

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03610
		FILM NUMBER:		21729808

	MAIL ADDRESS:	
		STREET 1:		C/O MASCO CORPORATION
		STREET 2:		17450 COLLEGE PARKWAY
		CITY:			LIVONIA
		STATE:			MI
		ZIP:			48152

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Howmet Aerospace Inc.
		CENTRAL INDEX KEY:			0000004281
		STANDARD INDUSTRIAL CLASSIFICATION:	ROLLING DRAWING & EXTRUDING OF NONFERROUS METALS [3350]
		IRS NUMBER:				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>
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<TYPE>4
<SEQUENCE>1
<FILENAME>tm219341d1_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-03-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001136562</rptOwnerCik>
            <rptOwnerName>PLANT JOHN C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>201 ISABELLA STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>PITTSBURGH</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15212-5872</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman and Co-CEO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <value>Common Stock</value>
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            <transactionDate>
                <value>2021-03-09</value>
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                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>60833</value>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
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                <sharesOwnedFollowingTransaction>
                    <value>868113</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
                <value>2021-03-09</value>
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                    <footnoteId id="F2"/>
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                <transactionPricePerShare>
                    <value>29.76</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                    <value>841899</value>
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                    <value>D</value>
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        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
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                <directOrIndirectOwnership>
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                <natureOfOwnership>
                    <value>By Trust</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Unit</value>
                <footnoteId id="F4"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
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            <transactionDate>
                <value>2021-03-09</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>60833</value>
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                <transactionPricePerShare>
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            <expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                    <value>60833</value>
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                <sharesOwnedFollowingTransaction>
                    <value>3585000</value>
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    <footnotes>
        <footnote id="F1">Each restricted stock unit converted into common stock on a one-for-one basis.</footnote>
        <footnote id="F2">Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3.</footnote>
        <footnote id="F3">Shares held in grantor retained annuity trusts (GRATS), each of which the reporting person is the trustee and beneficiary.</footnote>
        <footnote id="F4">These restricted stock units vested on March 9, 2021, upon satisfaction of the conditions that an Average Price (as defined in the Letter Agreement by and between Howmet Aerospace and Mr. Plant, dated as of August 1, 2019 and, to take into account the separation of Howmet Aerospace, as set forth in the Employee Matters Agreement, dated as of March 31, 2020, by and between Howmet Aerospace and Arconic Corporation) of $36 per share is achieved, and the continued employment of Mr. Plant as Chief Executive Officer of Howmet Aerospace through such date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Margaret Lam (Assistant Secretary), Attorney-in-fact</signatureName>
        <signatureDate>2021-03-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
