Form4.ai tracks every SEC insider trade in real time. See every WDC insider filing with a free account — no card.
See every WDC insider filing — free account, no card.
Free accountWESTERN DIGITAL CORP (WDC) has 34 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 14 sales totalling $22.0M. Most recent filing: Oct. 30, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Oct 30, 2026 SEC filing | Cole Martin I Director | Sold | $1,581,881 | — |
| Oct 22, 2026 SEC filing | Tregillis Cynthia L Chief Legal Officer & Corp Sec | Sold | $778,493 | — |
| Sep 21, 2026 SEC filing | Tan Irving Chief Executive Officer | Sold | $456,487 | — |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.