| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | C/O WESTERN DIGITAL CORPORATION, 5601 GREAT OAKS PARKWAY, SAN JOSE | By: /s/ Sandra Garcia Attorney-in-Fact For: Cynthia Tregillis | 27 Aug 2025 | 0002057088 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WDC | Common Stock | Options Exercise | $0 | +3 | +0% | $0.00 | 135K | 25 Aug 2025 | Direct | F1 |
| transaction | WDC | Common Stock | Tax liability | -$60.9K | -769 | -0.57% | $79.22 | 135K | 25 Aug 2025 | Direct | F2 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WDC | Dividend Equivalent Rights | Options Exercise | $0 | -3.3 | -1.77% | $0.00 | 183 | 25 Aug 2025 | Common Stock | 3.3 | Direct | F1 |
| Id | Content |
|---|---|
| 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). |