Follow the people · Insider
Cynthia L. Tregillis
Cynthia L. Tregillis files insider transactions with the SEC as a chief legal officer & corp sec of Western Digital (WDC). We hold 17 disclosed purchases and sales filed since 5 March 2025, 6 of them in the last 90 days.
- Files forWDC
- Disclosed buys and sells17 in all, 6 in the last 90 days
- Last disclosure8 September 2026
Positions held
1 post we hold — a term names its own dates; a run of filings only says when they filed- Filed 3 March 2025 — 4 September 2026Chief Legal Officer & Corp Sec · Western Digital (WDC)134 Form 4 lines · source: SEC Form 4
Everything they disclosed
120 entries, newest first — one per disclosure report, one per Form 4 line- exercised options over 7 shares of Western DigitalSEC Form 48 September 2026Common Stock · traded 3 September 2026 · filed 8 September 2026
- had shares withheld for tax on 700 shares of Western DigitalSEC Form 48 September 2026Common Stock · traded 3 September 2026 · filed 8 September 2026
- ▼ sold on the open market 432 shares of Western DigitalSEC Form 48 September 2026Common Stock · traded 4 September 2026 · filed 8 September 2026
- exercised options over 7 shares of Western Digital (a derivative holding)SEC Form 48 September 2026Dividend Equivalent Rights · traded 3 September 2026 · filed 8 September 2026
- exercised options over 7 shares of Western DigitalSEC Form 427 August 2026Common Stock · traded 25 August 2026 · filed 27 August 2026
- had shares withheld for tax on 771 shares of Western DigitalSEC Form 427 August 2026Common Stock · traded 25 August 2026 · filed 27 August 2026
- was granted 3,878 shares of Western DigitalSEC Form 427 August 2026Common Stock · traded 25 August 2026 · filed 27 August 2026
- ▼ sold on the open market 476 shares of Western DigitalSEC Form 427 August 2026Common Stock · traded 26 August 2026 · filed 27 August 2026
- exercised options over 9 shares of Western DigitalSEC Form 427 August 2026Common Stock · traded 26 August 2026 · filed 27 August 2026
- had shares withheld for tax on 1,631 shares of Western DigitalSEC Form 427 August 2026Common Stock · traded 26 August 2026 · filed 27 August 2026
- ▼ sold on the open market 1,007 shares of Western DigitalSEC Form 427 August 2026Common Stock · traded 27 August 2026 · filed 27 August 2026
- exercised options over 8 shares of Western Digital (a derivative holding)SEC Form 427 August 2026Dividend Equivalent Rights · traded 25 August 2026 · filed 27 August 2026
- exercised options over 9 shares of Western Digital (a derivative holding)SEC Form 427 August 2026Dividend Equivalent Rights · traded 26 August 2026 · filed 27 August 2026
- exercised options over 3 shares of Western DigitalSEC Form 424 August 2026Common Stock · traded 20 August 2026 · filed 24 August 2026
- had shares withheld for tax on 379 shares of Western DigitalSEC Form 424 August 2026Common Stock · traded 20 August 2026 · filed 24 August 2026
- ▼ sold on the open market 235 shares of Western DigitalSEC Form 424 August 2026Common Stock · traded 21 August 2026 · filed 24 August 2026
- exercised options over 11 shares of Western DigitalSEC Form 424 August 2026Common Stock · traded 21 August 2026 · filed 24 August 2026
- had shares withheld for tax on 1,109 shares of Western DigitalSEC Form 424 August 2026Common Stock · traded 21 August 2026 · filed 24 August 2026
- ▼ sold on the open market 684 shares of Western DigitalSEC Form 424 August 2026Common Stock · traded 24 August 2026 · filed 24 August 2026
- exercised options over 4 shares of Western Digital (a derivative holding)SEC Form 424 August 2026Dividend Equivalent Rights · traded 20 August 2026 · filed 24 August 2026
- exercised options over 11 shares of Western Digital (a derivative holding)SEC Form 424 August 2026Dividend Equivalent Rights · traded 21 August 2026 · filed 24 August 2026
- exercised options over 13 shares of Western DigitalSEC Form 421 July 2026Common Stock · traded 20 July 2026 · filed 21 July 2026
- had shares withheld for tax on 1,309 shares of Western DigitalSEC Form 421 July 2026Common Stock · traded 20 July 2026 · filed 21 July 2026
- ▼ sold on the open market 808 shares of Western DigitalSEC Form 421 July 2026Common Stock · traded 21 July 2026 · filed 21 July 2026
- exercised options over 13 shares of Western Digital (a derivative holding)SEC Form 421 July 2026Dividend Equivalent Rights · traded 20 July 2026 · filed 21 July 2026
- was granted 19 shares of Western Digital (a derivative holding)SEC Form 422 June 2026Dividend Equivalent Rights · traded 17 June 2026 · filed 22 June 2026
- exercised options over 6 shares of Western DigitalSEC Form 45 June 2026Common Stock · traded 3 June 2026 · filed 5 June 2026
- had shares withheld for tax on 699 shares of Western DigitalSEC Form 45 June 2026Common Stock · traded 3 June 2026 · filed 5 June 2026
- ▼ sold on the open market 432 shares of Western DigitalSEC Form 45 June 2026Common Stock · traded 5 June 2026 · filed 5 June 2026
- exercised options over 7 shares of Western Digital (a derivative holding)SEC Form 45 June 2026Dividend Equivalent Rights · traded 3 June 2026 · filed 5 June 2026
- ▼ sold on the open market 308 shares of Western DigitalSEC Form 427 May 2026Common Stock · traded 22 May 2026 · filed 27 May 2026
- exercised options over 7 shares of Western DigitalSEC Form 427 May 2026Common Stock · traded 25 May 2026 · filed 27 May 2026
- had shares withheld for tax on 771 shares of Western DigitalSEC Form 427 May 2026Common Stock · traded 25 May 2026 · filed 27 May 2026
- ▼ sold on the open market 214 shares of Western DigitalSEC Form 427 May 2026Common Stock · traded 27 May 2026 · filed 27 May 2026
- exercised options over 7 shares of Western Digital (a derivative holding)SEC Form 427 May 2026Dividend Equivalent Rights · traded 25 May 2026 · filed 27 May 2026
- exercised options over 3 shares of Western DigitalSEC Form 422 May 2026Common Stock · traded 20 May 2026 · filed 22 May 2026
- had shares withheld for tax on 379 shares of Western DigitalSEC Form 422 May 2026Common Stock · traded 20 May 2026 · filed 22 May 2026
- exercised options over 10 shares of Western DigitalSEC Form 422 May 2026Common Stock · traded 21 May 2026 · filed 22 May 2026
- had shares withheld for tax on 1,108 shares of Western DigitalSEC Form 422 May 2026Common Stock · traded 21 May 2026 · filed 22 May 2026
- ▼ sold on the open market 106 shares of Western DigitalSEC Form 422 May 2026Common Stock · traded 21 May 2026 · filed 22 May 2026
- exercised options over 4 shares of Western Digital (a derivative holding)SEC Form 422 May 2026Dividend Equivalent Rights · traded 20 May 2026 · filed 22 May 2026
- exercised options over 11 shares of Western Digital (a derivative holding)SEC Form 422 May 2026Dividend Equivalent Rights · traded 21 May 2026 · filed 22 May 2026
- exercised options over 12 shares of Western DigitalSEC Form 422 April 2026Common Stock · traded 20 April 2026 · filed 22 April 2026
- had shares withheld for tax on 1,308 shares of Western DigitalSEC Form 422 April 2026Common Stock · traded 20 April 2026 · filed 22 April 2026
- ▼ sold on the open market 363 shares of Western DigitalSEC Form 422 April 2026Common Stock · traded 21 April 2026 · filed 22 April 2026
- exercised options over 12 shares of Western Digital (a derivative holding)SEC Form 422 April 2026Dividend Equivalent Rights · traded 20 April 2026 · filed 22 April 2026
- was granted 41 shares of Western Digital (a derivative holding)SEC Form 419 March 2026Dividend Equivalent Rights · traded 18 March 2026 · filed 19 March 2026
- was granted 41 shares of Western Digital (a derivative holding)SEC Form 419 March 2026Dividend Equivalent Rights · traded 18 March 2026 · filed 19 March 2026
- exercised options over 23 shares of Western DigitalSEC Form 45 March 2026Common Stock · traded 3 March 2026 · filed 5 March 2026
- had shares withheld for tax on 2,798 shares of Western DigitalSEC Form 45 March 2026Common Stock · traded 3 March 2026 · filed 5 March 2026
- ▼ sold on the open market 777 shares of Western DigitalSEC Form 45 March 2026Common Stock · traded 4 March 2026 · filed 5 March 2026
- exercised options over 24 shares of Western Digital (a derivative holding)SEC Form 45 March 2026Dividend Equivalent Rights · traded 3 March 2026 · filed 5 March 2026
- ▼ sold on the open market 8,547 shares of Western DigitalSEC Form 45 March 2026Common Stock · traded 4 March 2026 · filed 5 March 2026
- exercised options over 24 shares of Western Digital (a derivative holding)SEC Form 45 March 2026Dividend Equivalent Rights · traded 3 March 2026 · filed 5 March 2026
- exercised options over 23 shares of Western DigitalSEC Form 45 March 2026Common Stock · traded 3 March 2026 · filed 5 March 2026
- had shares withheld for tax on 2,798 shares of Western DigitalSEC Form 45 March 2026Common Stock · traded 3 March 2026 · filed 5 March 2026
- ▼ sold on the open market 777 shares of Western DigitalSEC Form 45 March 2026Common Stock · traded 4 March 2026 · filed 5 March 2026
- ▼ sold on the open market 8,547 shares of Western DigitalSEC Form 45 March 2026Common Stock · traded 4 March 2026 · filed 5 March 2026
- exercised options over 6 shares of Western DigitalSEC Form 427 February 2026Common Stock · traded 25 February 2026 · filed 27 February 2026
- had shares withheld for tax on 770 shares of Western DigitalSEC Form 427 February 2026Common Stock · traded 25 February 2026 · filed 27 February 2026
- ▼ sold on the open market 214 shares of Western DigitalSEC Form 427 February 2026Common Stock · traded 26 February 2026 · filed 27 February 2026
- exercised options over 7 shares of Western Digital (a derivative holding)SEC Form 427 February 2026Dividend Equivalent Rights · traded 25 February 2026 · filed 27 February 2026
- exercised options over 7 shares of Western Digital (a derivative holding)SEC Form 427 February 2026Dividend Equivalent Rights · traded 25 February 2026 · filed 27 February 2026
- exercised options over 6 shares of Western DigitalSEC Form 427 February 2026Common Stock · traded 25 February 2026 · filed 27 February 2026
- had shares withheld for tax on 770 shares of Western DigitalSEC Form 427 February 2026Common Stock · traded 25 February 2026 · filed 27 February 2026
- ▼ sold on the open market 214 shares of Western DigitalSEC Form 427 February 2026Common Stock · traded 26 February 2026 · filed 27 February 2026
- exercised options over 3 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 20 February 2026 · filed 24 February 2026
- had shares withheld for tax on 244 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 20 February 2026 · filed 24 February 2026
- exercised options over 9 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 21 February 2026 · filed 24 February 2026
- exercised options over 3 shares of Western Digital (a derivative holding)SEC Form 424 February 2026Dividend Equivalent Rights · traded 20 February 2026 · filed 24 February 2026
- exercised options over 9 shares of Western Digital (a derivative holding)SEC Form 424 February 2026Dividend Equivalent Rights · traded 21 February 2026 · filed 24 February 2026
- had shares withheld for tax on 1,109 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 21 February 2026 · filed 24 February 2026
- ▼ sold on the open market 130 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 23 February 2026 · filed 24 February 2026
- ▼ sold on the open market 308 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 24 February 2026 · filed 24 February 2026
- exercised options over 3 shares of Western Digital (a derivative holding)SEC Form 424 February 2026Dividend Equivalent Rights · traded 20 February 2026 · filed 24 February 2026
- exercised options over 9 shares of Western Digital (a derivative holding)SEC Form 424 February 2026Dividend Equivalent Rights · traded 21 February 2026 · filed 24 February 2026
- exercised options over 3 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 20 February 2026 · filed 24 February 2026
- had shares withheld for tax on 244 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 20 February 2026 · filed 24 February 2026
- exercised options over 9 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 21 February 2026 · filed 24 February 2026
- had shares withheld for tax on 1,109 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 21 February 2026 · filed 24 February 2026
- ▼ sold on the open market 130 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 23 February 2026 · filed 24 February 2026
- ▼ sold on the open market 308 shares of Western DigitalSEC Form 424 February 2026Common Stock · traded 24 February 2026 · filed 24 February 2026
- ▼ sold on the open market 6,780 shares of Western DigitalSEC Form 46 February 2026Common Stock · traded 6 February 2026 · filed 6 February 2026
- ▼ sold on the open market 6,780 shares of Western DigitalSEC Form 46 February 2026Common Stock · traded 6 February 2026 · filed 6 February 2026
- exercised options over 11 shares of Western DigitalSEC Form 421 January 2026Common Stock · traded 20 January 2026 · filed 21 January 2026
- had shares withheld for tax on 842 shares of Western DigitalSEC Form 421 January 2026Common Stock · traded 20 January 2026 · filed 21 January 2026
- ▼ sold on the open market 447 shares of Western DigitalSEC Form 421 January 2026Common Stock · traded 21 January 2026 · filed 21 January 2026
- exercised options over 11 shares of Western Digital (a derivative holding)SEC Form 421 January 2026Dividend Equivalent Rights · traded 20 January 2026 · filed 21 January 2026
- exercised options over 11 shares of Western Digital (a derivative holding)SEC Form 421 January 2026Dividend Equivalent Rights · traded 20 January 2026 · filed 21 January 2026
- exercised options over 11 shares of Western DigitalSEC Form 421 January 2026Common Stock · traded 20 January 2026 · filed 21 January 2026
- had shares withheld for tax on 842 shares of Western DigitalSEC Form 421 January 2026Common Stock · traded 20 January 2026 · filed 21 January 2026
- ▼ sold on the open market 447 shares of Western DigitalSEC Form 421 January 2026Common Stock · traded 21 January 2026 · filed 21 January 2026
- was granted 82 shares of Western Digital (a derivative holding)SEC Form 422 December 2025Dividend Equivalent Rights · traded 18 December 2025 · filed 22 December 2025
- ▼ sold on the open market 2,801 shares of Western DigitalSEC Form 43 December 2025Common Stock · traded 2 December 2025 · filed 3 December 2025
- exercised options over 5 shares of Western Digital (a derivative holding)SEC Form 426 November 2025Dividend Equivalent Rights · traded 25 November 2025 · filed 26 November 2025
- exercised options over 5 shares of Western DigitalSEC Form 426 November 2025Common Stock · traded 25 November 2025 · filed 26 November 2025
- had shares withheld for tax on 770 shares of Western DigitalSEC Form 426 November 2025Common Stock · traded 25 November 2025 · filed 26 November 2025
- exercised options over 3 shares of Western Digital (a derivative holding)SEC Form 424 November 2025Dividend Equivalent Rights · traded 20 November 2025 · filed 24 November 2025
- exercised options over 7 shares of Western Digital (a derivative holding)SEC Form 424 November 2025Dividend Equivalent Rights · traded 21 November 2025 · filed 24 November 2025
- exercised options over 2 shares of Western DigitalSEC Form 424 November 2025Common Stock · traded 20 November 2025 · filed 24 November 2025
- had shares withheld for tax on 379 shares of Western DigitalSEC Form 424 November 2025Common Stock · traded 20 November 2025 · filed 24 November 2025
- exercised options over 7 shares of Western DigitalSEC Form 424 November 2025Common Stock · traded 21 November 2025 · filed 24 November 2025
- had shares withheld for tax on 1,108 shares of Western DigitalSEC Form 424 November 2025Common Stock · traded 21 November 2025 · filed 24 November 2025
- exercised options over 9 shares of Western Digital (a derivative holding)SEC Form 421 October 2025Dividend Equivalent Rights · traded 20 October 2025 · filed 21 October 2025
- exercised options over 8 shares of Western DigitalSEC Form 421 October 2025Common Stock · traded 20 October 2025 · filed 21 October 2025
- had shares withheld for tax on 1,307 shares of Western DigitalSEC Form 421 October 2025Common Stock · traded 20 October 2025 · filed 21 October 2025
- was granted 118 shares of Western Digital (a derivative holding)SEC Form 422 September 2025Dividend Equivalent Rights · traded 18 September 2025 · filed 22 September 2025
- exercised options over 1 share of Western Digital (a derivative holding)SEC Form 428 August 2025Dividend Equivalent Rights · traded 27 August 2025 · filed 28 August 2025
- was granted 16,554 shares of Western DigitalSEC Form 428 August 2025Common Stock · traded 26 August 2025 · filed 28 August 2025
- exercised options over 1 share of Western DigitalSEC Form 428 August 2025Common Stock · traded 27 August 2025 · filed 28 August 2025
- had shares withheld for tax on 266 shares of Western DigitalSEC Form 428 August 2025Common Stock · traded 27 August 2025 · filed 28 August 2025
- exercised options over 3 shares of Western Digital (a derivative holding)SEC Form 427 August 2025Dividend Equivalent Rights · traded 25 August 2025 · filed 27 August 2025
- exercised options over 3 shares of Western DigitalSEC Form 427 August 2025Common Stock · traded 25 August 2025 · filed 27 August 2025
- had shares withheld for tax on 769 shares of Western DigitalSEC Form 427 August 2025Common Stock · traded 25 August 2025 · filed 27 August 2025
- exercised options over 19 shares of Western Digital (a derivative holding)SEC Form 425 August 2025Dividend Equivalent Rights · traded 21 August 2025 · filed 25 August 2025
- exercised options over 18 shares of Western DigitalSEC Form 425 August 2025Common Stock · traded 21 August 2025 · filed 25 August 2025
- had shares withheld for tax on 4,428 shares of Western DigitalSEC Form 425 August 2025Common Stock · traded 21 August 2025 · filed 25 August 2025
- ▼ sold on the open market 14,067 shares of Western DigitalSEC Form 425 August 2025Common Stock · traded 22 August 2025 · filed 25 August 2025
- exercised options over 11 shares of Western Digital (a derivative holding)SEC Form 421 August 2025Dividend Equivalent Rights · traded 20 August 2025 · filed 21 August 2025
- exercised options over 10 shares of Western DigitalSEC Form 421 August 2025Common Stock · traded 20 August 2025 · filed 21 August 2025
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.