Martin I Cole insider trades: Western Digital (WDC) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Martin reports to the SEC
Open-market buys and sales
18 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 29, 2026 | WDC | ↓ Sell | 4,000 | $395.47 | $1.6M | Direct | Oct 30, 2026 (1d) |
| Jul 28, 2026 | WDC | ↓ Sell | 3,808 | $448.66 | $1.7M | Direct | Jul 29, 2026 (1d) |
| Jul 28, 2026 | WDC | ↓ Sell | 192 | $462.77 | $89K | Direct | Jul 29, 2026 (1d) |
| Jun 9, 2026 | WDC | ↓ Sell | 3,280 | $511.16 | $1.7M | Direct | Jun 11, 2026 (2d) |
| Jun 9, 2026 | WDC | ↓ Sell | 720 | $536.01 | $386K | Direct | Jun 11, 2026 (2d) |
| Mar 2, 2026 | WDC | ↓ Sell | 6,000 | $271.67 | $1.6M | Direct | Mar 3, 2026 (1d) |
| Dec 1, 2025 | WDC | ↓ Sell | 6,000 | $162.62 | $976K | Direct | Dec 3, 2025 (2d) |
| Nov 5, 2025 | WDC | ↓ Sell | 10,000 | $161.32 | $1.6M | Direct | Nov 6, 2025 (1d) |
| Oct 31, 2017 | CLDR | ↑ Buy | 20,000 | $15.25 | $305K | By Cole Family Holdings, LLLP | Nov 1, 2017 (1d) |
| Oct 27, 2017 | CLDR | ↑ Buy | 30,000 | $15.07 | $452K | By Cole Family Holdings, LLLP | Oct 27, 2017 (0d) |
| Jul 1, 2014 | ACN | ↓ Sell | 33,333 | $81.40 | $2.7M | Direct | Jul 3, 2014 (2d) |
| Apr 1, 2014 | ACN | ↓ Sell | 33,333 | $79.30 | $2.6M | Direct | Apr 2, 2014 (1d) |
| Dec 24, 2013 | ACN | ↓ Sell | 33,334 | $81.07 | $2.7M | Direct | Dec 26, 2013 (2d) |
| Oct 2, 2012 | ACN | ↓ Sell | 33,000 | $69.84 | $2.3M | Direct | Oct 4, 2012 (2d) |
| Jul 3, 2012 | ACN | ↓ Sell | 33,000 | $60.83 | $2.0M | Direct | Jul 6, 2012 (3d) |
| Mar 27, 2012 | ACN | ↓ Sell | 34,000 | $65.24 | $2.2M | Direct | Mar 28, 2012 (1d) |
| Mar 30, 2011 | NONE | ↓ Sell | 36,417 | $54.50 | $2.0M | Direct | Mar 31, 2011 (1d) |
| Jun 7, 2005 | NONE | ↓ Sell | 41,191 | $22.64 | $933K | Direct | Jun 9, 2005 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other WDC insiders
Open-market trades in the last 12 months
About Martin I Cole's insider trades
Martin I Cole is a director at Western Digital (WDC). Since Jun 7, 2005, Martin has reported 2 open-market purchases worth $757K and 16 sales worth $27.2M on SEC Form 4. In the last 12 months: 7 sales ($8.0M).
Their filings also include grants and awards (115 filings), shares withheld for taxes (35 filings), shares returned to the company (20 filings), option exercises (13 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every WDC insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.