Updated Jul 16, 2026
Tregillis Cynthia L has filed 5 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $6.36M.
Cynthia L. Tregillis is the Chief Legal Officer and Corporate Secretary at Western Digital Corporation, where she has held multiple roles related to legal and corporate governance. She has been involved in various SEC filings, indicating her active role in the company's legal affairs.
| Role | Chief Legal Officer & Corp Sec |
|---|---|
| Notability | 30/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-05 | WDC | WESTERN DIGITAL CORP | S — Open-market sale | 432 | $545.60 | $236K |
| 2026-06-05 | WDC | WESTERN DIGITAL CORP | F — Tax withholding / forfeiture | 699 | $594.11 | $415K |
| 2026-06-05 | WDC | WESTERN DIGITAL CORP | M — Option exercise | 6 | $0.00 | |
| 2026-05-27 | WDC | WESTERN DIGITAL CORP | S — Open-market sale | 214 | $539.63 | $115K |
| 2026-05-27 | WDC | WESTERN DIGITAL CORP | F — Tax withholding / forfeiture | 771 | $484.28 | $373K |
| 2026-05-27 | WDC | WESTERN DIGITAL CORP | M — Option exercise | 7 | $0.00 | |
| 2026-05-27 | WDC | WESTERN DIGITAL CORP | S — Open-market sale | 308 | $488.61 | $150K |
| 2026-05-22 | WDC | WESTERN DIGITAL CORP | S — Open-market sale | 106 | $458.87 | $49K |
| 2026-05-22 | WDC | WESTERN DIGITAL CORP | F — Tax withholding / forfeiture | 1.1K | $486.46 | $539K |
| 2026-05-22 | WDC | WESTERN DIGITAL CORP | M — Option exercise | 10 | $0.00 | |
| 2026-05-22 | WDC | WESTERN DIGITAL CORP | F — Tax withholding / forfeiture | 379 | $459.62 | $174K |
| 2026-05-22 | WDC | WESTERN DIGITAL CORP | M — Option exercise | 3 | $0.00 | |
| 2026-04-22 | WDC | WESTERN DIGITAL CORP | S — Open-market sale | 363 | $377.09 | $137K |
| 2026-04-22 | WDC | WESTERN DIGITAL CORP | F — Tax withholding / forfeiture | 1.3K | $374.11 | $489K |
| 2026-04-22 | WDC | WESTERN DIGITAL CORP | M — Option exercise | 12 | $0.00 | |
| 2026-03-06 | WDC | WESTERN DIGITAL CORP | S — Open-market sale [10b5-1] | 8.5K | $269.22 | $2.30M |
| 2026-03-06 | WDC | WESTERN DIGITAL CORP | S — Open-market sale [10b5-1] | 777 | $257.91 | $200K |
| 2026-03-06 | WDC | WESTERN DIGITAL CORP | F — Tax withholding / forfeiture [10b5-1] | 2.8K | $250.61 | $701K |
| 2026-03-06 | WDC | WESTERN DIGITAL CORP | M — Option exercise [10b5-1] | 23 | $0.00 | |
| 2026-02-27 | WDC | WESTERN DIGITAL CORP | S — Open-market sale [10b5-1] | 214 | $286.11 | $61K |
Cynthia L. Tregillis is the Chief Legal Officer and Corporate Secretary at Western Digital Corporation, where she has held multiple roles related to legal and corporate governance. She has been involved in various SEC filings, indicating her active role in the company's legal affairs.…
5 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 13 open-market sales ($6.36M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Tregillis Cynthia L profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.