WESTERN DIGITAL CORP (WDC) insider trading
No open-market insider purchases of WESTERN DIGITAL CORP are on record; 2 open-market sales are.
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Insider purchases
No open-market purchases on record.
Insider sales
2 open-market sales on record
| Filed | Insider | Sold |
|---|---|---|
| Oct 30 Form 4 (opens sec.gov) |
Martin I. ColeDirector · planned (10b5-1) | $1.6M 4,000 at $395.47 · 19% of holdings |
| Oct 22 Form 4 (opens sec.gov) |
Cynthia L. TregillisChief Legal Officer · planned (10b5-1) | $307k 807 at $380.00 · 1% of holdings |
Most insider sales are planned in advance or made for personal reasons, so a sale says less than a buy.
WDC trades reported by members of Congress
| Reported | Member | Trade | Amount |
|---|---|---|---|
| Oct 12 |  Gilbert Ray Cisneros, Jr.D-CA · House24 days after the trade | Sale | $1K–$15K |
| Sep 4 | Gilbert Ray Cisneros, Jr.D-CA · House49 days after the trade | Buy | $1K–$15K |
| Jul 21 |  Alan ArmstrongR-OK · Senate116 days after the trade | Buy | $1K–$15K |
Members of Congress report trades up to 45 days later, in dollar ranges. Every member's trades.
Planned insider sales of WDC (Form 144)
| Filed | Insider | To sell |
|---|---|---|
| Oct 29 Form 144 | Martin I ColeAffiliate · 10b5-1 plan | $1.6M 4,000 shares from Oct 29 |
| Oct 21 Form 144 | CYNTHIA LOCK TREGILLISOfficer · 10b5-1 plan | $307k 807 shares from Oct 21 |
A Form 144 is filed before an insider sells restricted or control shares; the Form 4 reports the sale once made.
Questions
Are insiders buying WDC stock?
Not recently: no open-market purchases were filed in the last 90 days.
Who bought WDC stock most recently?
No insider has bought WDC on the open market in the filings on record.
How does InsiderBeacon score an insider buy?
Out of 100, from who bought, how much their stake grew, the size of the trade, whether other insiders bought within ten days, where the price sat in its 52-week range, and whether it was a first or a routine buy. The score is fixed when the filing arrives. The formula and the research behind it.
Data as of Oct 30, 2026, from SEC EDGAR Form 4 filings: open-market purchases (code P) of $25,000 or more, and open-market sales. Every row links to its filing. Scores summarise what a filing says (how the score works); outcomes are hypothetical, from the first close after the filing, and past results don't predict future ones. Disclaimer