Cynthia L Tregillis Insider Trades & Stock Holdings

Chief Legal Officer & Corp Sec · Western Digital Corporation · Latest filing Oct 21, 2026

Cynthia L Tregillis, Chief Legal Officer & Corp Sec at Western Digital Corporation has 2 Form 4 trades on file since Jul 21, 2026. Open-market activity: 0 purchases ($0) and 2 sales ($734.60K), net -$734.60K. Latest filing: disposed of 807 shares of $WDC on Oct 21, 2026 at $380.

Trades on file

2

Open-market bought

$0

Open-market sold

$734.60K

Net open-market

-$734.60K

Shares held ($WDC)

108.93K

Latest filing

Oct 21, 2026

Shares held by Cynthia L Tregillis

• $WDC108.93K sh

Shares owned after the most recent Form 4 for each company.

All insider trades by Cynthia L Tregillis

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Oct 21, 2026	$WDC	Sell (Open-market sale) 10b5-1	807	$380	$306.66K	108.93K	-0.74%				Chief Legal Officer & Corp Sec	SEC	Read
Jul 21, 2026	$WDC	Sell (Open-market sale) 10b5-1	808	$529.63	$427.94K	114.54K	-0.70%	-15.5%	-14.5%		Chief Legal Officer & Corp Sec	SEC	—

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks Cynthia L Tregillis traded

• $WDC

Frequently asked questions

Has Cynthia L Tregillis been buying or selling stock?

Cynthia L Tregillis has 0 open-market purchases and 2 open-market sales on file, net -$734.60K. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Cynthia L Tregillis's latest insider trade?

disposed of 807 shares of $WDC on Oct 21, 2026 at $380.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.