StockCIK 106040

WESTERN DIGITAL CORP (WDC): Insider Trades and Fund Holdings

In the past 12 months, WESTERN DIGITAL CORP insiders reported 0 open-market purchases worth $0 and 9 sales worth $4.96M; 6 of the sales were reported as made under a 10b5-1 trading plan.

0Insider buys, 12 months

$0Bought by insiders, 12 months

$4.96MSold by insiders, 12 months

2Tracked funds holding

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 22, 2026.

Recent WDC insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Oct 22	Oct 21	Cynthia L. TregillisGeneral Counsel	General Counsel	▼ SELL10b5-1	807	380.00	$307K	−0.7%	Form 4 ↗
Sep 8	Sep 4	Vidyadhara K. GubbiChief of Global Operations	Chief of Global Operations	▼ SELL	1,795	459.87	$825K	−2.2%	Form 4 ↗
Sep 8	Sep 4	Cynthia L. TregillisGeneral Counsel	General Counsel	▼ SELL10b5-1	432	451.20	$195K	−0.4%	Form 4 ↗
Sep 2	Aug 31	Stephanie A. StreeterDirector	Director (ind.)	▼ SELL	4,000	447.82	$1.79M	−9.9%	Form 4 ↗
Sep 2	Sep 1	Stephanie A. StreeterDirector	Director (ind.)	▼ SELL	1,600	455.00	$728K	−4.4%	Form 4 ↗
Aug 27	Aug 27	Cynthia L. TregillisGeneral Counsel	General Counsel	▼ SELL10b5-1	1,007	478.36	$482K	−0.9%	Form 4 ↗
Aug 27	Aug 26	Cynthia L. TregillisGeneral Counsel	General Counsel	▼ SELL10b5-1	476	450.78	$215K	−0.4%	Form 4 ↗
Aug 24	Aug 24	Cynthia L. TregillisGeneral Counsel	General Counsel	▼ SELL10b5-1	684	446.17	$305K	−0.6%	Form 4 ↗
Aug 24	Aug 21	Cynthia L. TregillisGeneral Counsel	General Counsel	▼ SELL10b5-1	235	477.27	$112K	−0.2%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

Insiders who traded in the past year

Insider	Role	Bought	Sells	Sold	Latest
Cynthia L. Tregillis	General Counsel	$0	6	$1.62M	Oct 22, 2026
Vidyadhara K. Gubbi	Chief of Global Operations	$0	1	$825K	Sep 8, 2026
Stephanie A. Streeter	Director	$0	2	$2.52M	Sep 2, 2026

Tracked funds that report WDC

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

Fund	Quarter	Shares	Value	% of portfolio	Change
Renaissance Technologies	Q2 2026	537,473	$343.3M	0.47%	▼ −53.1%
Bridgewater Associates	Q2 2026	172,415	$110.1M	0.45%	▼ −30.8%

Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →