Western Digital · Insider Trading

Last 365 days · Open-market buys and sells by officers and directors · Same-day, same-person, same-direction trades combined · Amounts in USD millions← WDC

Buy

0 · $0.00M

Sell

24 · $37.5M

Net

−$37.5M

By Insider

Name	Title	Buy	Sell	Latest Trade
Tan Irving	Chief Executive Officer	—	40,000 shares · $17.1M	2026-08-11
Cole Martin I	—	—	12,000 shares · $5.4M	2026-10-29
Davis Brian Scott	Chief Sales & Mrktng Officer	—	10,000 shares · $5.0M	2026-05-11
Gubbi Vidyadhara K	Chief of Global Operations	—	8,944 shares · $4.3M	2026-09-04
Tregillis Cynthia L	Chief Legal Officer & Corp Sec	—	5,872 shares · $2.7M	2026-10-21
STREETER STEPHANIE A	—	—	5,600 shares · $2.5M	2026-09-01
KIDDOO BRUCE E	—	—	750 shares · $0.40M	2026-05-28

All Trades

Date	Name	Title	Side	Shares	Trades	Avg Price	Value
2026-10-29	Cole Martin I	Director	Sell	4,000	12	395.47	$1.6M
2026-10-21	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	807	1	380.00	$0.31M
2026-09-04	Gubbi Vidyadhara K	Chief of Global Operations	Sell	1,795	1	459.87	$0.83M
2026-09-04	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	432	1	451.20	$0.19M
2026-09-01	STREETER STEPHANIE A	Director	Sell	1,600	1	455.00	$0.73M
2026-08-31	STREETER STEPHANIE A	Director	Sell	4,000	2	447.82	$1.8M
2026-08-27	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	1,007	1	478.36	$0.48M
2026-08-26	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	476	1	450.78	$0.21M
2026-08-24	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	684	1	446.17	$0.31M
2026-08-21	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	235	1	477.27	$0.11M
2026-08-11	Tan Irving	Chief Executive Officer	Sell	20,000	7	444.97	$8.9M
2026-07-28	Cole Martin I	Director	Sell	4,000	32	449.34	$1.8M
2026-07-21	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	808	1	529.63	$0.43M
2026-06-09	Cole Martin I	Director	Sell	4,000	44	515.63	$2.1M
2026-06-05	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	432	1	545.60	$0.24M
2026-06-01	Gubbi Vidyadhara K	Chief of Global Operations	Sell	2,475	1	556.24	$1.4M
2026-05-28	KIDDOO BRUCE E	Director	Sell	750	1	528.52	$0.40M
2026-05-27	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	214	1	539.63	$0.12M
2026-05-22	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	308	1	488.61	$0.15M
2026-05-21	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	106	1	458.87	$0.05M
2026-05-11	Davis Brian Scott	Chief Sales & Mrktng Officer	Sell	10,000	18	500.69	$5.0M
2026-05-04	Gubbi Vidyadhara K	Chief of Global Operations	Sell	4,674	1	443.19	$2.1M
2026-05-01	Tan Irving	Chief Executive Officer	Sell	20,000	9	411.84	$8.2M
2026-04-21	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Sell	363	1	377.09	$0.14M

Data comes from insiders' SEC ownership filings (Form 4). Only open-market purchases (P) and sales (S) are counted; option exercises, grants, tax withholding and other non-trading changes are excluded.