Form 4 for WDC Western Digital
Accepted 2026-08-24 19:00:02 ET · period of report 2026-08-20 · accession 0001266824-26-000174 · 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 | 2026-08-24 19:00 | 2026-08-20+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | M - OptEx | $0.00 | +14 | 113.9K | +0.0% | $0 |
| DMT | 2026-08-24 19:00 | 2026-08-20+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | F - Tax | $461.89 | -1,488 | 112.8K | -1% | -$687.3K |
| DMT | 2026-08-24 19:00 | 2026-08-21+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | S - Sale+OE | $454.12 | -919 | 112.1K | -0.8% | -$417.3K |
| DMT | 2026-08-24 19:00 | 2026-08-20+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | M - OptEx | $0.00 | -15.02 | 294.79 | -5% | $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 | 2026-08-20 | M | A | 3 | $0.00 | 114,542 | 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 | 2026-08-20 | F | D | 379 | $469.05 | 114,163 | 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 | 2026-08-21 | S | D | 235 | $477.27 | 113,928 | 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 March 6, 2026. |
| 4 | Common | Common Stock | 2026-08-21 | M | A | 11 | $0.00 | 113,939 | 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. |
| 5 | Common | Common Stock | 2026-08-21 | F | D | 1,109 | $459.44 | 112,830 | D | — | — | (F2) Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). |
| 6 | Common | Common Stock | 2026-08-24 | S | D | 684 | $446.17 | 112,146 | 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 March 6, 2026. |
| 7 | Derivative | Dividend Equivalent Rights | 2026-08-20 | M | D | 3.83 | $0.00 | 305.97 | D | — · — to — | 3.83 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. |
| 8 | Derivative | Dividend Equivalent Rights | 2026-08-21 | M | D | 11.18 | $0.00 | 294.79 | D | — · — to — | 11.18 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. |