SEC INSIDER TRANSACTIONS

WESTERN DIGITAL CORP (WDC) Insider Transactions

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WDC · WESTERN DIGITAL CORP

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Roles: director,officer,ten_percent_owner,otherOwner nameOfficer titleOwnership: D, I, unknownoriginal or amendedTransaction fromTransaction throughFiled fromFiled throughMinimum quantityMaximum quantityMinimum priceMaximum priceMinimum calculated valueMaximum calculated valueResults per page (1–100)

OR within codes/roles; AND between categories. Roles apply to buyers and sellers. Owner predicates match the same owner. Missing values fail numeric/date filters. Value is quantity × reported price for non-derivative rows only; derivative values are unknown. Amendments stay separate; joint owners do not duplicate rows.

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Stale snapshot · Covered: filings 2026-05-14 to 2026-11-13 · 71 filings · fetched 2026-11-13T20:57:07Z

Recent reported activity

0purchase rows on this page

2sale rows on this page

290matching filing rows

Purchases and sales count original non-derivative P and S rows. Awards, gifts, exercises, derivatives and amendments are shown separately and are not described as market purchases.

Transaction / filed	Reporting owner(s)	Code / security	Quantity	Price as filed	Ownership	Source
2026-05-25Filed 2026-05-27	Tregillis Cynthia LOfficer · Chief Legal Officer & Corp Sec Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 23, 2025. F2 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F3 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F2	M Exercise / conversionCommon Stock · Non-derivative	7A	0	Direct	Form 4 ↗0001266824-26-000107
2026-05-25Filed 2026-05-27	Tan IrvingDirector · Officer · Chief Executive Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionDividend Equivalent Rights · Derivative	30.3301D	0	Direct	Form 4 ↗0001266824-26-000106
2026-05-25Filed 2026-05-27	Tan IrvingDirector · Officer · Chief Executive Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F2	F WithholdingCommon Stock · Non-derivative	479D	484.28	Direct	Form 4 ↗0001266824-26-000106
2026-05-25Filed 2026-05-27	Tan IrvingDirector · Officer · Chief Executive Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionCommon Stock · Non-derivative	30A	0	Direct	Form 4 ↗0001266824-26-000106
2026-05-25Filed 2026-05-27	Gubbi Vidyadhara KOfficer · Chief of Global Operations Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionDividend Equivalent Rights · Derivative	8.6663D	0	Direct	Form 4 ↗0001266824-26-000105
2026-05-25Filed 2026-05-27	Gubbi Vidyadhara KOfficer · Chief of Global Operations Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F2	F WithholdingCommon Stock · Non-derivative	1,143D	484.28	Direct	Form 4 ↗0001266824-26-000105
2026-05-25Filed 2026-05-27	Gubbi Vidyadhara KOfficer · Chief of Global Operations Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionCommon Stock · Non-derivative	8A	0	Direct	Form 4 ↗0001266824-26-000105
2026-05-25Filed 2026-05-27	Davis Brian ScottOfficer · Chief Sales & Mrktng Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionDividend Equivalent Rights · Derivative	7.3619D	0	Direct	Form 4 ↗0001266824-26-000104
2026-05-25Filed 2026-05-27	Davis Brian ScottOfficer · Chief Sales & Mrktng Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F2	F WithholdingCommon Stock · Non-derivative	971D	484.28	Direct	Form 4 ↗0001266824-26-000104
2026-05-25Filed 2026-05-27	Davis Brian ScottOfficer · Chief Sales & Mrktng Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionCommon Stock · Non-derivative	7A	0	Direct	Form 4 ↗0001266824-26-000104
2026-05-22Filed 2026-05-27	Tregillis Cynthia LOfficer · Chief Legal Officer & Corp Sec Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 23, 2025. F2 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F3 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	S Sale (market/private)Common Stock · Non-derivative	308D	488.61	Direct	Form 4 ↗0001266824-26-000107
2026-05-21Filed 2026-05-22	Tregillis Cynthia LOfficer · Chief Legal Officer & Corp Sec Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). F3 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 23, 2025. References: F1	M Exercise / conversionDividend Equivalent Rights · Derivative	10.5887D	0	Direct	Form 4 ↗0001266824-26-000099
2026-05-21Filed 2026-05-22	Tregillis Cynthia LOfficer · Chief Legal Officer & Corp Sec Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). F3 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 23, 2025. References: F3	S Sale (market/private)Common Stock · Non-derivative	106D	458.87	Direct	Form 4 ↗0001266824-26-000099
2026-05-21Filed 2026-05-22	Tregillis Cynthia LOfficer · Chief Legal Officer & Corp Sec Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). F3 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 23, 2025. References: F2	F WithholdingCommon Stock · Non-derivative	1,108D	486.46	Direct	Form 4 ↗0001266824-26-000099
2026-05-21Filed 2026-05-22	Tregillis Cynthia LOfficer · Chief Legal Officer & Corp Sec Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). F3 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 23, 2025. References: F1	M Exercise / conversionCommon Stock · Non-derivative	10A	0	Direct	Form 4 ↗0001266824-26-000099
2026-05-21Filed 2026-05-22	Tan IrvingDirector · Officer · Chief Executive Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionDividend Equivalent Rights · Derivative	23.6805D	0	Direct	Form 4 ↗0001266824-26-000098
2026-05-21Filed 2026-05-22	Tan IrvingDirector · Officer · Chief Executive Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F2	F WithholdingCommon Stock · Non-derivative	587D	486.46	Direct	Form 4 ↗0001266824-26-000098
2026-05-21Filed 2026-05-22	Tan IrvingDirector · Officer · Chief Executive Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionCommon Stock · Non-derivative	23A	0	Direct	Form 4 ↗0001266824-26-000098
2026-05-21Filed 2026-05-22	Gubbi Vidyadhara KOfficer · Chief of Global Operations Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionDividend Equivalent Rights · Derivative	5.2586D	0	Direct	Form 4 ↗0001266824-26-000096
2026-05-21Filed 2026-05-22	Gubbi Vidyadhara KOfficer · Chief of Global Operations Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F2	F WithholdingCommon Stock · Non-derivative	693D	486.46	Direct	Form 4 ↗0001266824-26-000096
2026-05-21Filed 2026-05-22	Gubbi Vidyadhara KOfficer · Chief of Global Operations Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionCommon Stock · Non-derivative	5A	0	Direct	Form 4 ↗0001266824-26-000096
2026-05-21Filed 2026-05-22	Davis Brian ScottOfficer · Chief Sales & Mrktng Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionDividend Equivalent Rights · Derivative	4.5007D	0	Direct	Form 4 ↗0001266824-26-000095
2026-05-21Filed 2026-05-22	Davis Brian ScottOfficer · Chief Sales & Mrktng Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F2	F WithholdingCommon Stock · Non-derivative	593D	486.46	Direct	Form 4 ↗0001266824-26-000095
2026-05-21Filed 2026-05-22	Davis Brian ScottOfficer · Chief Sales & Mrktng Officer Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). References: F1	M Exercise / conversionCommon Stock · Non-derivative	4A	0	Direct	Form 4 ↗0001266824-26-000095
2026-05-20Filed 2026-05-22	Tregillis Cynthia LOfficer · Chief Legal Officer & Corp Sec Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). F3 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 23, 2025. References: F1	M Exercise / conversionDividend Equivalent Rights · Derivative	3.6301D	0	Direct	Form 4 ↗0001266824-26-000099

Imported instruments only. Joint owners do not multiply transactions. Amendments are separate filing rows, not additional trades. No aggregate trade totals are implied.