<SEC-DOCUMENT>0001266824-25-000217.txt : 20251106
<SEC-HEADER>0001266824-25-000217.hdr.sgml : 20251106
<ACCEPTANCE-DATETIME>20251106195010
ACCESSION NUMBER:		0001266824-25-000217
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251105
FILED AS OF DATE:		20251106
DATE AS OF CHANGE:		20251106

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Cole Martin I
		CENTRAL INDEX KEY:			0001302874
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08703
		FILM NUMBER:		251460079

	MAIL ADDRESS:	
		STREET 1:		C/O WESTERN UNION
		STREET 2:		7001 E BELLEVIEW AVE DENVER, CO 80237
		CITY:			DENVER
		STATE:			CO
		ZIP:			80237

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WESTERN DIGITAL CORP
		CENTRAL INDEX KEY:			0000106040
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER STORAGE DEVICES [3572]
		ORGANIZATION NAME:           	06 Technology
		EIN:				330956711
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0703

	BUSINESS ADDRESS:	
		STREET 1:		5601 GREAT OAKS PARKWAY
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95119
		BUSINESS PHONE:		9496727000

	MAIL ADDRESS:	
		STREET 1:		3355 MICHELSON DRIVE SUITE 100
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92612

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GENERAL DIGITAL CORP
		DATE OF NAME CHANGE:	19730125
</SEC-HEADER>
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        <issuerTradingSymbol>WDC</issuerTradingSymbol>
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            <rptOwnerName>Cole Martin I</rptOwnerName>
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            <rptOwnerStreet2>5601 GREAT OAKS PARKWAY</rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95119</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <footnotes>
        <footnote id="F1">The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025.</footnote>
        <footnote id="F2">Includes 1,701 additional stock units acquired by the Reporting Person in connection with the Issuer's spin-off (the &quot;Spin-Off&quot;) of a then-wholly owned subsidiary of the Issuer on February 21, 2025. Pursuant to an Employee Matters Agreement, at the effective time of the Spin-Off, each outstanding Issuer stock unit was adjusted and converted into additional stock units based on the equity conversion ratio of 1.452526 per every Issuer stock unit.</footnote>
        <footnote id="F3">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $155.5927 to a high of $156.51. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F4">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $156.59 to a high of $157.58. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F5">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $157.59 to a high of $158.55. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F6">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $158.60 to a high of $159.54. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F7">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $159.69 to a high of $160.6804. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F8">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $160.70 to a high of $161.69. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F9">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $161.70 to a high of $162.69. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F10">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $162.70 to a high of $163.68. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F11">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $163.70 to a high of $164.68. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F12">Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $164.71 to a high of $165.35. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: /s/ Sandra Garcia Attorney-in-Fact For: Martin I. Cole</signatureName>
        <signatureDate>2025-11-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
