SEC Form 4Coverage since May 22, 2026
$WDC insider trading
Over the last 12 months, Western Digital insiders reported no purchases and 9 sales totaling $6.4M across SEC Form 4 filings. 78% of the activity was filed under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- — 0 events
- Sold · 12m
- $6.4M 9 events
- Events · 12m
- 9 Form 4 filings, grouped
- Insiders · 12m
- 4 distinct reporters
- 10b5-1 share
- 78% pre-arranged plans
Side
Price · $WDC · 12Mvia TradingView
Top insiders · 12m
Cole Martin I—4× · $3.9M
Tregillis Cynthia LChief Legal Officer & Corp Sec3× · $814K
KIDDOO BRUCE E—1× · $396K
Gubbi Vidyadhara KChief of Global Operations1× · $1.4M
All insider trades
9 events
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Jul 28, 2026 | Cole Martin ID | ▼ Sale | 192 | $462.77 | $89K | -0.9% | plan · 2 tranches |
| Jul 28, 2026 | Cole Martin ID | ▼ Sale | 3,808 | $448.66 | $1.7M | -15% | plan · 30 tranches |
| Jul 21, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 808 | $529.63 | $428K | -0.7% | plan |
| Jun 9, 2026 | Cole Martin ID | ▼ Sale | 720 | $536.01 | $386K | -2.8% | plan · 14 tranches |
| Jun 9, 2026 | Cole Martin ID | ▼ Sale | 3,280 | $511.16 | $1.7M | -11.1% | plan · 30 tranches |
| Jun 5, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 432 | $545.6 | $236K | -0.4% | plan |
| Jun 1, 2026 | Gubbi Vidyadhara KChief of Global Operations · O | ▼ Sale | 2,475 | $556.24 | $1.4M | -2.8% | — |
| May 28, 2026 | KIDDOO BRUCE ED | ▼ Sale | 750 | $528.52 | $396K | -16.1% | — |
| May 22, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 308 | $488.61 | $150K | -0.3% | plan |
About Form 4
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $WDC feed.