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

3sale 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
2026-08-21Filed 2026-08-24	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 March 6, 2026. References: F1	M Exercise / conversionCommon Stock · Non-derivative	11A	0	Direct	Form 4 ↗0001266824-26-000174
2026-08-21Filed 2026-08-24	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 March 6, 2026. References: F3	S Sale (market/private)Common Stock · Non-derivative	235D	477.27	Direct	Form 4 ↗0001266824-26-000174
2026-08-21Filed 2026-08-24	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	25.0128D	0	Direct	Form 4 ↗0001266824-26-000173
2026-08-21Filed 2026-08-24	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	545D	459.44	Direct	Form 4 ↗0001266824-26-000173
2026-08-21Filed 2026-08-24	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	25A	0	Direct	Form 4 ↗0001266824-26-000173
2026-08-21Filed 2026-08-24	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	5.5576D	0	Direct	Form 4 ↗0001266824-26-000172
2026-08-21Filed 2026-08-24	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	694D	459.44	Direct	Form 4 ↗0001266824-26-000172
2026-08-21Filed 2026-08-24	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 ↗0001266824-26-000172
2026-08-21Filed 2026-08-24	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	4.7532D	0	Direct	Form 4 ↗0001266824-26-000171
2026-08-21Filed 2026-08-24	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	459.44	Direct	Form 4 ↗0001266824-26-000171
2026-08-21Filed 2026-08-24	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 ↗0001266824-26-000171
2026-08-20Filed 2026-08-24	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 March 6, 2026. References: F1	M Exercise / conversionDividend Equivalent Rights · Derivative	3.8337D	0	Direct	Form 4 ↗0001266824-26-000174
2026-08-20Filed 2026-08-24	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 March 6, 2026. References: F2	F WithholdingCommon Stock · Non-derivative	379D	469.05	Direct	Form 4 ↗0001266824-26-000174
2026-08-20Filed 2026-08-24	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 March 6, 2026. References: F1	M Exercise / conversionCommon Stock · Non-derivative	3A	0	Direct	Form 4 ↗0001266824-26-000174
2026-08-20Filed 2026-08-24	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	13.2646D	0	Direct	Form 4 ↗0001266824-26-000173
2026-08-20Filed 2026-08-24	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	144D	469.05	Direct	Form 4 ↗0001266824-26-000173
2026-08-20Filed 2026-08-24	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	13A	0	Direct	Form 4 ↗0001266824-26-000173
2026-08-20Filed 2026-08-24	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	4.7453D	0	Direct	Form 4 ↗0001266824-26-000172
2026-08-20Filed 2026-08-24	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	592D	469.05	Direct	Form 4 ↗0001266824-26-000172
2026-08-20Filed 2026-08-24	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 ↗0001266824-26-000172
2026-08-20Filed 2026-08-24	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	5.7366D	0	Direct	Form 4 ↗0001266824-26-000171
2026-08-20Filed 2026-08-24	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	469.05	Direct	Form 4 ↗0001266824-26-000171
2026-08-20Filed 2026-08-24	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 ↗0001266824-26-000171
2026-08-11Filed 2026-08-12	Tan IrvingDirector · Officer · Chief Executive Officer 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 February 5, 2026. F2 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $440.77 to a high of $441.66. 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. F3 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $441.94 to a high of $442.73. 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. F4 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $443.00 to a high of $443.91. 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. F5 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $444.00 to a high of $444.94. 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. F6 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $445.00 to a high of $445.99. 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. F7 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $446.00 to a high of $446.99. 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. F8 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $447.00 to a high of $447.88. 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. References: F1, F8	S Sale (market/private)Common Stock · Non-derivative	1,546D	447.1831	Direct	Form 4 ↗0001266824-26-000166
2026-08-11Filed 2026-08-12	Tan IrvingDirector · Officer · Chief Executive Officer 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 February 5, 2026. F2 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $440.77 to a high of $441.66. 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. F3 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $441.94 to a high of $442.73. 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. F4 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $443.00 to a high of $443.91. 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. F5 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $444.00 to a high of $444.94. 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. F6 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $445.00 to a high of $445.99. 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. F7 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $446.00 to a high of $446.99. 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. F8 Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $447.00 to a high of $447.88. 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. References: F1, F7	S Sale (market/private)Common Stock · Non-derivative	6,445D	446.3812	Direct	Form 4 ↗0001266824-26-000166

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