WDC
WESTERN DIGITAL CORP · Technology · Market cap $166.2B
Insiders sold $17.8M net in the last 90 days ·5 sellers, 0 buyers· 9 of 12 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 9, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$74.9M
reported sales (SEC code S)
Unique Insiders
10
in the rolling window
Latest filing
Sep 9, 2026
Tregillis Cynthia L
WESTERN DIGITAL CORP (WDC) has 99 SEC Form 4 filings (414 transaction rows) in the rolling window, disclosed by 10 distinct insiders. Most recent filing: Sep 9, 2026.
Inside the rolling window, 10 insiders at WESTERN DIGITAL CORP reported no open-market purchases and 43 open-market sales totaling $74.9M. The most active filer is Chief Legal Officer & Corp Sec Tregillis Cynthia L with 18 filings. Insiders have net sold $35.6M over the trailing 6 months. The most recent open-market filing is a sale of 432 shares by Chief Legal Officer & Corp Sec Tregillis Cynthia L, dated Sep 4, 2026, worth $195K.
- Industry:Computer Hardware
- CEO:Tiang Yew Tan
- Employees:40,000
- HQ:San Jose, CA, US
- IPO:1978-10-31
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Chief Legal Officer & Corp Sec | Sale | 432 | $195K | Sep 9 | -4.4% | SEC ↗ | |
Gubbi Vidyadhara KFirst in 3 months | Chief of Global Operations | Sale | 1,795 | $825K | Sep 9 | -4.4% | SEC ↗ |
STREETER STEPHANIE AFirst filing | Director | Sale | 4,000 | $1.8M | Sep 2 | +2.7% | SEC ↗ |
STREETER STEPHANIE AFirst filing | Director | Sale | 1,600 | $728K | Sep 2 | +2.7% | SEC ↗ |
| Chief Legal Officer & Corp Sec | Sale | 476 | $215K | Aug 28 | +0.3% | SEC ↗ | |
| Chief Legal Officer & Corp Sec | Sale | 1,007 | $482K | Aug 28 | +0.3% | SEC ↗ | |
| Chief Legal Officer & Corp Sec | Sale | 235 | $112K | Aug 24 | +5.9% | SEC ↗ | |
| Chief Legal Officer & Corp Sec | Sale | 684 | $305K | Aug 24 | +5.9% | SEC ↗ | |
Tan IrvingFirst in 3 months | Chief Executive Officer | Sale | 20,000 | $8.9M | Aug 13 | -5.4% | SEC ↗ |
| Director | Sale | 4,000 | $1.8M | Jul 29 | — | SEC ↗ | |
| Chief Legal Officer & Corp Sec | Sale | 808 | $428K | Jul 22 | — | SEC ↗ | |
| Director | Sale | 4,000 | $2.1M | Jun 11 | — | SEC ↗ | |
| Chief Legal Officer & Corp Sec | Sale | 432 | $236K | Jun 5 | — | SEC ↗ | |
| Chief of Global Operations | Sale | 2,475 | $1.4M | Jun 2 | — | SEC ↗ | |
KIDDOO BRUCE EFirst filing | Director | Sale | 750 | $396K | May 29 | — | SEC ↗ |
| Chief Legal Officer & Corp Sec | Sale | 308 | $150K | May 27 | — | SEC ↗ | |
| Chief Legal Officer & Corp Sec | Sale | 214 | $115K | May 27 | — | SEC ↗ | |
| Chief Legal Officer & Corp Sec | Sale | 106 | $49K | May 22 | — | SEC ↗ | |
| Chief Sales & Mrktng Officer | Sale | 10,000 | $5.0M | May 12 | — | SEC ↗ | |
Tan IrvingFirst in 3 months | Chief Executive Officer | Sale | 20,000 | $8.2M | May 5 | — | SEC ↗ |
| Chief of Global Operations | Sale | 4,674 | $2.1M | May 5 | — | SEC ↗ | |
| Chief Legal Officer & Corp Sec | Sale | 363 | $137K | Apr 22 | — | SEC ↗ | |
| Chief of Global Operations | Sale | 8,518 | $2.2M | Mar 10 | — | SEC ↗ | |
| Chief of Global Operations | Sale | 10,148 | $2.7M | Mar 5 | — | SEC ↗ | |
| Chief Legal Officer & Corp Sec | Sale | 9,324 | $2.5M | Mar 5 | — | SEC ↗ |
Congress trading WDC 37 all-time
- DRep. Gilbert CisnerosPurchase$1,001 - $15,0002026-07-17
- DRep. Gilbert Ray CisnerosPurchase$1,001 - $15,0002026-07-16
- DRep. Ro KhannaPurchase$1,001 - $15,0002026-04-13
- RRep. Robert P. BresnahanOther$1,001 - $15,0002025-04-11
- RRep. Robert P. BresnahanOther$1,001 - $15,0002025-04-10
- DRep. Ro KhannaSale$1,001 - $15,0002023-04-25
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does WDC have?
WESTERN DIGITAL CORP (WDC) has 99 SEC Form 4 filings (414 transaction rows) in the rolling 365-day window, disclosed by 10 distinct insiders. Most recent filing: Sep 9, 2026.
When was the most recent SEC Form 4 filing for WDC?
The most recent Form 4 filing for WDC on Tracefour is dated Sep 9, 2026.
Who is the most active insider at WDC?
The most active SEC Form 4 filer at WDC in the rolling window is Chief Legal Officer & Corp Sec Tregillis Cynthia L, with 18 filings.
What is the net insider flow at WDC over the last 6 months?
Over the trailing 180 days, insiders at WDC have net sold $35.6M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at WDC in the current window?
Inside the rolling window, insiders at WDC bought $0 and sold $74.9M based on SEC Form 4 filings.
Can I get alerts for WDC insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at WESTERN DIGITAL CORP (WDC). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
WESTERN DIGITAL CORP is in the Technology sector.