<SEC-DOCUMENT>0000929638-25-002493.txt : 20250702
<SEC-HEADER>0000929638-25-002493.hdr.sgml : 20250702
<ACCEPTANCE-DATETIME>20250702162845
ACCESSION NUMBER:		0000929638-25-002493
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250630
FILED AS OF DATE:		20250702
DATE AS OF CHANGE:		20250702

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Barker Robert
		CENTRAL INDEX KEY:			0002007837
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41013
		FILM NUMBER:		251101615

	MAIL ADDRESS:	
		STREET 1:		C/O GCT SEMICONDUCTOR, INC.
		STREET 2:		2290 NORTH 1ST STREET, SUITE 201
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GCT Semiconductor Holding, Inc.
		CENTRAL INDEX KEY:			0001851961
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				862171699
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2290 NORTH 1ST STREET
		STREET 2:		SUITE 201
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131
		BUSINESS PHONE:		408-434-6040

	MAIL ADDRESS:	
		STREET 1:		2290 NORTH 1ST STREET
		STREET 2:		SUITE 201
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Concord Acquisition Corp III
		DATE OF NAME CHANGE:	20210318
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-06-30</periodOfReport>

    <issuer>
        <issuerCik>0001851961</issuerCik>
        <issuerName>GCT Semiconductor Holding, Inc.</issuerName>
        <issuerTradingSymbol>GCTS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002007837</rptOwnerCik>
            <rptOwnerName>Barker Robert</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GCT SEMICONDUCTOR HOLDING, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2290 NORTH 1ST STREET, SUITE 201</rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOther>true</isOther>
            <otherText>Class II Director</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-06-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>18456</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>77321</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Each Restricted Stock Unit (&quot;RSU&quot;) represents the right to receive one share of common stock, par value $0.0001 per share (&quot;Common Stock&quot;) of GCT Semiconductor Holding, Inc. (the &quot;Issuer&quot;) following vesting. The RSUs become payable in Common Stock in accordance with a deferral election made by the reporting person.</footnote>
        <footnote id="F2">The number of shares subject to and issuable under the award is determined on the last day of each calendar quarter during the period April 1, 2025 through March 31, 2026 (beginning with the quarter ending June 30, 2025) by dividing $27,500 by the fair market value per share of Common Stock, which was determined to be $1.49 on June 30, 2025, rounded down to the nearest whole share.</footnote>
        <footnote id="F3">The RSUs will vest on March 31, 2026, subject to continued service through such date.</footnote>
        <footnote id="F4">No expiration date is applicable to restricted stock units.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Edmond Cheng, attorney-in-fact</signatureName>
        <signatureDate>2025-07-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
