<SEC-DOCUMENT>0000899243-20-034679.txt : 20201221
<SEC-HEADER>0000899243-20-034679.hdr.sgml : 20201221
<ACCEPTANCE-DATETIME>20201221153200
ACCESSION NUMBER:		0000899243-20-034679
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20201217
FILED AS OF DATE:		20201221
DATE AS OF CHANGE:		20201221

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			James J. Kim 2008 Trust FBO Alexandra Kim Panichello & Descendants
		CENTRAL INDEX KEY:			0001426971

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-29472
		FILM NUMBER:		201404176

	BUSINESS ADDRESS:	
		STREET 1:		854 MT. PLEASANT ROAD
		CITY:			BRYN MAWR
		STATE:			PA
		ZIP:			19010
		BUSINESS PHONE:		480-821-5000 X-5162

	MAIL ADDRESS:	
		STREET 1:		854 MT. PLEASANT ROAD
		CITY:			BRYN MAWR
		STATE:			PA
		ZIP:			19010

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMKOR TECHNOLOGY, INC.
		CENTRAL INDEX KEY:			0001047127
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				231722724
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2045 EAST INNOVATION CIRCLE
		CITY:			TEMPE
		STATE:			AZ
		ZIP:			85284
		BUSINESS PHONE:		480-821-5000

	MAIL ADDRESS:	
		STREET 1:		2045 EAST INNOVATION CIRCLE
		CITY:			TEMPE
		STATE:			AZ
		ZIP:			85284

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMKOR TECHNOLOGY INC
		DATE OF NAME CHANGE:	19971001
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-12-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001047127</issuerCik>
        <issuerName>AMKOR TECHNOLOGY, INC.</issuerName>
        <issuerTradingSymbol>AMKR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001426971</rptOwnerCik>
            <rptOwnerName>James J. Kim 2008 Trust FBO Alexandra Kim Panichello &amp; Descendants</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SIANA CARR O'CONNOR &amp; LYNAM,</rptOwnerStreet1>
            <rptOwnerStreet2>1500 EAST LANCASTER AVENUE</rptOwnerStreet2>
            <rptOwnerCity>PAOLI</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19301-9713</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Exhibit 99.1</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-12-17</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>816613</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>15.41</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>546787</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On February 11, 2008, the Reporting Person acquired 1,363,400 shares of Common Stock from Agnes C. Kim in a private transaction and financed such purchase by issuing a promissory note (the &quot;2008 Note&quot;). On December 17, 2020, the Reporting Person transferred 816,613 shares of Common Stock to Agnes C. Kim in full payment of the principal and accrued interest of the 2008 Note payable to her by such Trust.  John T. Kim and Susan Y. Kim are co-trustees of the trust.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Richard D. Rosen, Attorney-in-Fact</signatureName>
        <signatureDate>2020-12-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>attachment1.htm
<DESCRIPTION>EX-99.1 DOCUMENT
<TEXT>
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<HEAD>
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<BODY>
<PRE>
Exhibit 99.1


A Schedule 13D was filed by James J. Kim and those members of the reporting
group who then constituted the group on November 28, 2005, as amended by
Amendment No. 1 filed with the Securities and Exchange Commission (the
"Commission") on April 4, 2008, Amendment No. 2 filed with the Commission on
March 19, 2009, Amendment No. 3 filed with the Commission on April 16, 2009,
Amendment No. 4 filed with the Commission on February 5, 2010, Amendment No. 5
filed with the Commission on March 28, 2011, Amendment No. 6 filed with the
Commission on November 17, 2011, Amendment No. 7 filed with the Commission on
March 29, 2013, Amendment No. 8 filed with the Commission on March 28, 2014,
Amendment No. 9 filed with the Commission on March 30, 2015, Amendment No. 10
filed with the Commission on March 30, 2016, Amendment No. 11 filed with the
Commission on January 20, 2017, Amendment No. 12 filed with the Commission on
March 21, 2018, Amendment No. 13 filed with the Commission on November 9, 2018,
Amendment No. 14  filed with the Commission on March 20, 2020 (as further
amended from time to time, the "Schedule 13D").  Those individuals and entities
listed in the Schedule 13D, including the filer of this Form 4, may be deemed to
be members of a group (the "Group") who, or whose trustees, exercise voting or
investment power with respect to shares of Amkor Technology, Inc.'s (the
"Issuer") Common Stock in concert with other members of the Group.  The Group
may be deemed to beneficially own more than 10% of the outstanding voting
securities of the Issuer. The reporting person states that the filing of this
Form 4 Report shall not be deemed an admission that the reporting person is the
beneficial owner of the reported securities owned by the other members of the
Group, for the purpose of Section 16 of the Securities Exchange Act of 1934, as
amended, or for any other purpose.


</PRE>
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