<SEC-DOCUMENT>0001158839-25-000015.txt : 20251223
<SEC-HEADER>0001158839-25-000015.hdr.sgml : 20251223
<ACCEPTANCE-DATETIME>20251223190130
ACCESSION NUMBER:		0001158839-25-000015
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251219
FILED AS OF DATE:		20251223
DATE AS OF CHANGE:		20251223

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KIM JAMES J
		CENTRAL INDEX KEY:			0001158839
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-29472
		FILM NUMBER:		251602105

	MAIL ADDRESS:	
		STREET 1:		C/O SIANA CARR O'CONNOR & LYNAM, LLP
		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]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				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>4
<SEQUENCE>1
<FILENAME>wk-form4_1766534487.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-12-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001158839</rptOwnerCik>
            <rptOwnerName>KIM JAMES J</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>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Member of 10% owner group (6)</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-12-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>G</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3244594</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>61645</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-12-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>G</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2538000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7828682</value>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By John T. Kim Family Trust U/A dtd. 12/11/12</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1957350</value>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By John T. Kim G-S Trust dtd. 12/11/12</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>164678</value>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By self as Trustee of Trust U/A dtd. 12/11/12</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">On November 24, 2025, the Reporting Person reported that the 2024 Grantor Retained Annuity Trust of John J. Kim 8/5/2024 distributed 965,000 shares of the Common Stock of Amkor Technology, Inc. (the &quot;Issuer&quot;) to the James J. Kim Revocable Trust dtd 08/30/2018. These shares were inadvertently reported as being held indirectly by the James J. Kim 2018-1 Qualified Annuity Trust U/A on a Form 4 filed by the Reporting Person on November 24, 2025. These shares were direct holdings of the Reporting Person, as the Reporting Person is the settlor, sole trustee, and sole beneficiary of such trust.</footnote>
        <footnote id="F2">On December 19, 2025, the Reporting Person made a distribution of 3,244,594 shares of common stock of the Issuer to the 2025 Grantor Retained Annuity Trust No. 1 of James J. Kim. Susan Y. Kim is the sole trustee of the 2025 Grantor Retained Annuity Trust No.1 of James J. Kim.</footnote>
        <footnote id="F3">On December 19, 2025, the spouse of the Reporting Person, Agnes C. Kim, made a distribution of 2,538,000 shares of common stock of the Issuer to the 2025 Grantor Retained Annuity Trust No. 1
of Agnes C. Kim. Susan Y. Kim is the sole trustee of the 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim.</footnote>
        <footnote id="F4">The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities, except to the extent of the Reporting Person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (&quot;Section 16&quot;), or for any other purpose.</footnote>
        <footnote id="F5">The Reporting Person is (i) a trustee of trusts for the benefit of his immediate family members which own 9,786,032 shares of the Issuer's Common Stock (ii) a trustee of a trust which is a controlling member of a limited liability company being treated as a corporation for purposes of Section 16, which limited liability company holds 164,678 shares of the Issuer's Common stock. Pursuant to the Form 4 instructions, the Reporting Person is being treated as having a pecuniary interest in all of such shares.</footnote>
    </footnotes>

    <remarks>(6) The Reporting Person states that the filing of this Form 4 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 or for any other purpose.</remarks>

    <ownerSignature>
        <signatureName>/s/ Brian D. Short, Attorney-in-Fact for James J. Kim</signatureName>
        <signatureDate>2025-12-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
