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

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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
2026-05-20Filed 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: F2	F WithholdingCommon Stock · Non-derivative	379D	459.62	Direct	Form 4 ↗0001266824-26-000099
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 / conversionCommon Stock · Non-derivative	3A	0	Direct	Form 4 ↗0001266824-26-000099
2026-05-20Filed 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	12.5601D	0	Direct	Form 4 ↗0001266824-26-000098
2026-05-20Filed 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	145D	459.62	Direct	Form 4 ↗0001266824-26-000098
2026-05-20Filed 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	12A	0	Direct	Form 4 ↗0001266824-26-000098
2026-05-20Filed 2026-05-22	Sennesael KrisOfficer · Chief Financial 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	141.6534D	0	Direct	Form 4 ↗0001266824-26-000097
2026-05-20Filed 2026-05-22	Sennesael KrisOfficer · Chief Financial 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	18,374D	459.62	Direct	Form 4 ↗0001266824-26-000097
2026-05-20Filed 2026-05-22	Sennesael KrisOfficer · Chief Financial 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	141A	0	Direct	Form 4 ↗0001266824-26-000097
2026-05-20Filed 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	4.4972D	0	Direct	Form 4 ↗0001266824-26-000096
2026-05-20Filed 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	593D	459.62	Direct	Form 4 ↗0001266824-26-000096
2026-05-20Filed 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	4A	0	Direct	Form 4 ↗0001266824-26-000096
2026-05-20Filed 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	5.4319D	0	Direct	Form 4 ↗0001266824-26-000095
2026-05-20Filed 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	716D	459.62	Direct	Form 4 ↗0001266824-26-000095
2026-05-20Filed 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	5A	0	Direct	Form 4 ↗0001266824-26-000095
2026-05-15Filed 2026-05-18	KIDDOO BRUCE EDirector Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 The shares were transferred by the Reporting Person as a bona fide gift to a charitable organization. References: F1	G GiftCommon Stock · Non-derivative	100D	0	Direct	Form 4 ↗0001266824-26-000088

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