Person

Cynthia L. Tregillis

Chief Legal Officer & Corp Sec, Western Digital

Current S&P 500 boards
0
Current roles
1
Open-market buys
$0
Open-market sales
$8.9M

Current roles

From Section 16 filings (Forms 3, 4 and 5) in the last 13 months.

Past roles

“Last filing” is the latest Form 3/4/5 for that company, an upper bound on the end date.

None on record since 2016.

Sits alongside

People who currently share a board or management team with this person.

Open-market trades

Purchases and sales reported on Form 4 at S&P 500 companies.

DateCompanyTypeSharesPriceValue
Oct 21, 2026WDCSale807$380.00$307K
Sep 4, 2026WDCSale432$451.20$195K
Aug 27, 2026WDCSale1,007$478.36$482K
Aug 26, 2026WDCSale476$450.78$215K
Aug 24, 2026WDCSale684$446.17$305K
Aug 21, 2026WDCSale235$477.27$112K
Jul 21, 2026WDCSale808$529.63$428K
Jun 5, 2026WDCSale432$545.60$236K
May 27, 2026WDCSale214$539.63$115K
May 22, 2026WDCSale308$488.61$150K
May 21, 2026WDCSale106$458.87$49K
Apr 21, 2026WDCSale363$377.09$137K
Mar 4, 2026WDCSale8,547$269.22$2.3M
Mar 4, 2026WDCSale777$257.91$200K
Feb 26, 2026WDCSale214$286.11$61K
Feb 24, 2026WDCSale308$281.70$87K
Feb 23, 2026WDCSale130$283.83$37K
Feb 6, 2026WDCSale6,780$270.49$1.8M
Jan 21, 2026WDCSale447$229.00$102K
Dec 2, 2025WDCSale2,801$160.57$450K
Aug 22, 2025WDCSale14,067$74.78$1.1M

SEC reporting-owner ID (CIK) 2057088 · all filings on EDGAR

Cynthia L. Tregillis (WDC) | USBoard