Form 4 for WDC Western Digital
Accepted 2026-05-22 19:24:01 ET · period of report 2026-05-20 · accession 0001266824-26-000099 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-05-22 19:24 | 2026-05-20+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | M - OptEx | $0.00 | +13 | 119.7K | +0.0% | $0 |
| DMT | 2026-05-22 19:24 | 2026-05-20+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | F - Tax | $479.62 | -1,487 | 118.5K | -1% | -$713.2K |
| DT | 2026-05-22 19:24 | 2026-05-21 | WDC | Tregillis Cynthia L | CLO, Corp Sec | S - Sale+OE | $458.87 | -106 | 118.4K | -0.1% | -$48.6K |
| DMT | 2026-05-22 19:24 | 2026-05-20+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | M - OptEx | $0.00 | -14.22 | 318.41 | -4% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-05-20 | M | A | 3 | $0.00 | 120,026 | D | — | — | (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. |
| 2 | Common | Common Stock | 2026-05-20 | F | D | 379 | $459.62 | 119,647 | D | — | — | (F2) Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). |
| 3 | Common | Common Stock | 2026-05-21 | M | A | 10 | $0.00 | 119,657 | D | — | — | (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. |
| 4 | Common | Common Stock | 2026-05-21 | F | D | 1,108 | $486.46 | 118,549 | D | — | — | (F2) Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). |
| 5 | Common | Common Stock | 2026-05-21 | S | D | 106 | $458.87 | 118,443 | D | — | — | (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. |
| 6 | Derivative | Dividend Equivalent Rights | 2026-05-20 | M | D | 3.63 | $0.00 | 329.00 | D | — · — to — | 3.63 Common Stock | (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. (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. (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. |
| 7 | Derivative | Dividend Equivalent Rights | 2026-05-21 | M | D | 10.59 | $0.00 | 318.41 | D | — · — to — | 10.59 Common Stock | (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. (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. (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. |