<SEC-DOCUMENT>0000899243-21-006537.txt : 20210216
<SEC-HEADER>0000899243-21-006537.hdr.sgml : 20210216
<ACCEPTANCE-DATETIME>20210216084200
ACCESSION NUMBER:		0000899243-21-006537
CONFORMED SUBMISSION TYPE:	5
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20201231
FILED AS OF DATE:		20210216
DATE AS OF CHANGE:		20210216

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Qualified Annuity Trust under the Susan Y. Kim 2018-1 Irrevocable Trust Agreement dtd August 29, 2018
		CENTRAL INDEX KEY:			0001755764
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		5
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-29472
		FILM NUMBER:		21632910

	BUSINESS ADDRESS:	
		STREET 1:		C/O KEVIN LYNAM; SIANA CARR O'CONNOR & L
		STREET 2:		1500 EAST LANCASTER AVENUE
		CITY:			PAOLI
		STATE:			PA
		ZIP:			19301-9713
		BUSINESS PHONE:		6102964200

	MAIL ADDRESS:	
		STREET 1:		C/O KEVIN LYNAM; SIANA CARR O'CONNOR & L
		STREET 2:		1500 EAST LANCASTER AVENUE
		CITY:			PAOLI
		STATE:			PA
		ZIP:			19301-9713

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>
<DOCUMENT>
<TYPE>5
<SEQUENCE>1
<FILENAME>doc5.xml
<DESCRIPTION>FORM 5 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>5</documentType>

    <periodOfReport>2020-12-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <form3HoldingsReported>0</form3HoldingsReported>

    <form4TransactionsReported>0</form4TransactionsReported>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001755764</rptOwnerCik>
            <rptOwnerName>Qualified Annuity Trust under the Susan Y. Kim 2018-1 Irrevocable Trust Agreement dtd August 29, 2018</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>Exhibit 99.1</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-12-15</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>G</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>162257</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>15.40</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1622043</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On December 15, 2020, the Qualified Annuity Trust under the Susan Y. Kim 2018-1 Irrevocable Trust Agreement Dated 8/29/18 distributed 162,257 shares of the Issuer's Common Stock to Susan Y. Kim. James J. Kim and Susan Y. Kim are co-trustees of the trust.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Richard D. Rosen, as Attorney in Fact</signatureName>
        <signatureDate>2021-02-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>attachment1.htm
<DESCRIPTION>EX-99.1 DOCUMENT
<TEXT>
<HTML>
<HEAD>
</HEAD>
<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 5, may be deemed to be
members of a group (the "Group") who each 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 5 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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</TEXT>
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</SEC-DOCUMENT>
