Form 4 for WDC Western Digital
Accepted 2026-08-27 20:05:46 ET · period of report 2026-08-25 · accession 0001266824-26-000188 · 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 | 2026-08-27 20:05 | 2026-08-25+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | M - OptEx | $0.00 | +16 | 114.8K | +0.0% | $0 |
| DMT | 2026-08-27 20:05 | 2026-08-25+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | F - Tax | $463.06 | -2,402 | 113.2K | -2% | -$1.11M |
| DT | 2026-08-27 20:05 | 2026-08-25 | WDC | Tregillis Cynthia L | CLO, Corp Sec | A - Grant | $0.00 | +3,878 | 115.3K | +3% | $0 |
| DMT | 2026-08-27 20:05 | 2026-08-26+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | S - Sale+OE | $469.51 | -1,483 | 112.2K | -1% | -$696.3K |
| DMT | 2026-08-27 20:05 | 2026-08-25+ | WDC | Tregillis Cynthia L | CLO, Corp Sec | M - OptEx | $0.00 | -17.25 | 277.54 | -6% | $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 | 2026-08-25 | M | A | 7 | $0.00 | 112,153 | 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 | 2026-08-25 | F | D | 771 | $450.75 | 111,382 | 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 | 2026-08-25 | A | A | 3,878 | $0.00 | 115,260 | D | — | — | (F3) Represents the grant of restricted stock units to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. |
| 4 | Common | Common Stock | 2026-08-26 | S | D | 476 | $450.78 | 114,784 | D | — | — | (F4) 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. |
| 5 | Common | Common Stock | 2026-08-26 | M | A | 9 | $0.00 | 114,793 | 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. |
| 6 | Common | Common Stock | 2026-08-26 | F | D | 1,631 | $468.88 | 113,162 | D | — | — | (F2) Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). |
| 7 | Common | Common Stock | 2026-08-27 | S | D | 1,007 | $478.36 | 112,155 | D | — | — | (F4) 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. |
| 8 | Derivative | Dividend Equivalent Rights | 2026-08-25 | M | D | 7.78 | $0.00 | 287.01 | D | — · — to — | 7.78 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. |
| 9 | Derivative | Dividend Equivalent Rights | 2026-08-26 | M | D | 9.47 | $0.00 | 277.54 | D | — · — to — | 9.47 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. |