Western Digital (NASDAQ: WDC) insider transactions

In the twelve months to 10 November 2026, executives and directors of Western Digital reported 220 open-market sales of 229,150 shares ($72.2m) and 0 open-market purchases, by 10 people, according to the Form 4 filings they submitted to the SEC.

Latest transactions

The 20 most recent transactions in Western Digital shares reported on Form 4
Date	Insider	Role	Transaction	Shares	Price	Held after	Filing
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−204	$390.04	21,229	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−385	$391.05	20,844	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−88	$400.33	17,476	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−43	$401.47	17,433	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−407	$392.42	20,437	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−494	$393.22	19,943	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−243	$394.41	19,700	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−209	$395.30	19,491	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−317	$396.31	19,174	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−584	$397.48	18,590	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−723	$398.45	17,867	Form 4
29 October 2026	Cole Martin I	Director	Open-market sale, 10b5-1 plan	−303	$399.36	17,564	Form 4
21 October 2026	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Open-market sale, 10b5-1 plan	−807	$380.00	108,928	Form 4
20 October 2026	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Option exercise, 10b5-1 plan	+14	—	111,044	Form 4
20 October 2026	Tregillis Cynthia L	Chief Legal Officer & Corp Sec	Shares withheld for tax, 10b5-1 plan	−1,310	$364.32	109,735	Form 4
20 September 2026	Davis Brian Scott	Chief Sales & Mrktng Officer	Option exercise	+8	—	100,454	Form 4
20 September 2026	Davis Brian Scott	Chief Sales & Mrktng Officer	Shares withheld for tax	−963	$441.36	99,491	Form 4
20 September 2026	Tan Irving	Chief Executive Officer	Option exercise	+57	—	266,704	Form 4
20 September 2026	Tan Irving	Chief Executive Officer	Shares withheld for tax	−1,091	$441.36	265,613	Form 4
17 September 2026	Shihab Ahmed Mohammed	Chief Product Officer	Option exercise	+56	—	163,758	Form 4

Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.

How to read the table

Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.

Where each row comes from

From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Western Digital page; the method, in data sources.

Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.