WDC Western Digital Corporation
Western Digital Corporation (WDC) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 80% planned / 20% discretionary
Largest single sale: $3.0M.
Where they traded
No open-market insider purchase on record.
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Gubbi Vidyadhara K | Chief of Global Operations | Sell | 1,795 | $459.87 | $825.5K | 80,571 −2.2% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 432 | $451.20 | $194.9K | 111,030 −0.4% of holding | |
| STREETER STEPHANIE A | Director | Sell | 1,600 | $455.00 | $728.0K | 34,807 −4.4% of holding | |
| STREETER STEPHANIE A 2 fills | Director | Sell | 4,000 | $447.82 | $1.8M | 38,407 −9.4% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 1,007 | $478.36 | $481.7K | 112,155 −0.9% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 476 | $450.78 | $214.6K | 114,784 −0.4% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 684 | $446.17 | $305.2K | 112,146 −0.6% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 235 | $477.27 | $112.2K | 113,928 −0.2% of holding | |
| Tan Irving 7 fills | Chief Executive Officer | Sell 10b5-1 | 20,000 | $444.97 | $8.9M | 593,488 −3.3% of holding | |
| Cole Martin I 32 fills | Director | Sell 10b5-1 | 4,000 | $449.34 | $1.8M | 25,369 −13.6% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 808 | $529.63 | $427.9K | 114,539 −0.7% of holding | |
| Cole Martin I 44 fills | Director | Sell 10b5-1 | 4,000 | $515.63 | $2.1M | 29,385 −12% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 432 | $545.60 | $235.7K | 116,643 −0.4% of holding | |
| Gubbi Vidyadhara K | Chief of Global Operations | Sell | 2,475 | $556.24 | $1.4M | 85,154 −2.8% of holding | |
| KIDDOO BRUCE E | Director | Sell | 750 | $528.52 | $396.4K | 3,903 −16.1% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 214 | $539.63 | $115.5K | 117,157 −0.2% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 308 | $488.61 | $150.5K | 118,135 −0.3% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 106 | $458.87 | $48.6K | 118,443 −0.1% of holding | |
| Davis Brian Scott 18 fills | Chief Sales & Mrktng Officer | Sell 10b5-1 | 10,000 | $500.69 | $5.0M | 113,889 −8.1% of holding | |
| Gubbi Vidyadhara K | Chief of Global Operations | Sell | 4,674 | $443.19 | $2.1M | 90,041 −4.9% of holding | |
| Tan Irving 9 fills | Chief Executive Officer | Sell 10b5-1 | 20,000 | $411.84 | $8.2M | 614,893 −3.2% of holding | |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell 10b5-1 | 363 | $377.09 | $136.9K | 120,023 −0.3% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.