Martin I Cole sold $1.7M of WDC
director at WESTERN DIGITAL CORP. 3,808 shares at an average of $448.66, traded Jul 28, 2026, filed Jul 29, 2026.
Score components
- +15RoleDirector
- +25Trade size$1.7M at market
- +5Share of holdings soldSold 15% of holdings
- +15Cluster3 insiders selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001266824-26-000163, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -64 | $424.05 | $27k | 25,369 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -32 | $425.31 | $14k | 25,337 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -64 | $426.45 | $27k | 25,273 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -115 | $428.08 | $49k | 25,158 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -93 | $429.12 | $40k | 25,065 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -103 | $430.45 | $44k | 24,962 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -115 | $431.41 | $50k | 24,847 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -38 | $432.20 | $16k | 24,809 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -112 | $433.84 | $49k | 24,697 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -64 | $434.81 | $28k | 24,633 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -32 | $435.59 | $14k | 24,601 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -154 | $436.89 | $67k | 24,447 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -118 | $438.08 | $52k | 24,329 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -64 | $439.38 | $28k | 24,265 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -96 | $440.96 | $42k | 24,169 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -32 | $442.47 | $14k | 24,137 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -32 | $444.51 | $14k | 24,105 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -32 | $447.10 | $14k | 24,073 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -41 | $448.46 | $18k | 24,032 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -39 | $449.42 | $18k | 23,993 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -70 | $451.30 | $32k | 23,923 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -106 | $452.12 | $48k | 23,817 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -144 | $453.27 | $65k | 23,673 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -128 | $454.44 | $58k | 23,545 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -304 | $455.55 | $138k | 23,241 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -312 | $456.52 | $142k | 22,929 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -328 | $457.45 | $150k | 22,601 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -529 | $458.96 | $243k | 22,072 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -248 | $459.97 | $114k | 21,824 | Jul 29, 2026 |
| Jul 28, 2026 | SOpen-market sale Common Stock10b5-1 | -199 | $461.23 | $92k | 21,625 | Jul 29, 2026 |
Related signals
Other insiders at WESTERN DIGITAL CORP and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 38Weak | WESTERN DIGITAL CORP | Vidyadhara K Gubbi Chief of Global Operations | $825k 1,795 shares | -2% | |
| 7Weak | WESTERN DIGITAL CORP | Cynthia L Tregillis Chief Legal Officer & Corp Sec | $195k 432 shares | -0% | |
| 60Notable | WESTERN DIGITAL CORP | Stephanie A Streeter director | $2.5M 5,600 shares | -14% | |
| 16Weak | WESTERN DIGITAL CORP | Cynthia L Tregillis Chief Legal Officer & Corp Sec | $696k 1,483 shares | -1% | |
| 11Weak | WESTERN DIGITAL CORP | Cynthia L Tregillis Chief Legal Officer & Corp Sec | $417k 919 shares | -1% | |
| 45Moderate | WESTERN DIGITAL CORP | Irving Tan Chief Executive Officer | $8.9M 20,000 shares | -3% | |
| 19Weak | WESTERN DIGITAL CORP | Martin I Cole director | $89k 192 shares | -1% | |
| 5Weak | WESTERN DIGITAL CORP | Cynthia L Tregillis Chief Legal Officer & Corp Sec | $428k 808 shares | -1% | |
| 40Moderate | WESTERN DIGITAL CORP | Martin I Cole director | $1.7M 3,280 shares | -11% | |
| 26Weak | WESTERN DIGITAL CORP | Martin I Cole director | $386k 720 shares | -3% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.