Wednesday, October 28, 2026
Data from SEC filings, checked daily
Public filings, plainly told
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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

Timeline: news and trades

Company filings (8-K), insider trades, notices of planned sales (Form 144) and fund moves in the past year, newest first.

  1. Oct 22, 2026NewsCompany reported: Quarterly or annual results
  2. Oct 21, 2026Insider saleGeneral Counsel Cynthia L. Tregillis sold $306,660 under a 10b5-1 plan
  3. Oct 21, 2026Planned saleCYNTHIA LOCK TREGILLIS (officer) filed notice to sell about $306,660 around Oct 21, 2026
  4. Sep 4, 2026Insider saleChief of Global Operations Vidyadhara K. Gubbi sold $825,472
  5. Sep 4, 2026Insider saleGeneral Counsel Cynthia L. Tregillis sold $194,918 under a 10b5-1 plan
  6. Sep 4, 2026Planned saleVIDYADHARA K GUBBI (officer) filed notice to sell about $825,472 around Sep 4, 2026
  7. Sep 4, 2026Planned saleCYNTHIA LOCK TREGILLIS (officer) filed notice to sell about $194,918 around Sep 4, 2026
  8. Sep 1, 2026Insider saleDirector Stephanie A. Streeter sold $728,000
  9. Aug 31, 2026Insider saleDirector Stephanie A. Streeter sold $1.8 million
  10. Aug 31, 2026Planned saleSTREETER STEPHANIE A (associated to affiliate) filed notice to sell about $4.5 million around Aug 31, 2026
  11. Aug 27, 2026Insider saleGeneral Counsel Cynthia L. Tregillis sold $481,709 under a 10b5-1 plan
  12. Aug 27, 2026Planned saleCYNTHIA LOCK TREGILLIS (officer) filed notice to sell about $481,709 around Aug 27, 2026
  13. Aug 26, 2026Insider saleGeneral Counsel Cynthia L. Tregillis sold $214,571 under a 10b5-1 plan
  14. Aug 26, 2026Planned saleCYNTHIA LOCK TREGILLIS (officer) filed notice to sell about $214,571 around Aug 26, 2026
  15. Aug 24, 2026Insider saleGeneral Counsel Cynthia L. Tregillis sold $305,180 under a 10b5-1 plan
  16. Aug 24, 2026Planned saleCYNTHIA LOCK TREGILLIS (officer) filed notice to sell about $305,180 around Aug 24, 2026
  17. Aug 21, 2026Insider saleGeneral Counsel Cynthia L. Tregillis sold $112,158 under a 10b5-1 plan
  18. Aug 21, 2026Planned saleCYNTHIA LOCK TREGILLIS (officer) filed notice to sell about $112,158 around Aug 21, 2026
  19. Jun 30, 2026FundBridgewater Associates cut 31% in Q2 2026 (13F filed Aug 14, 2026)
  20. Jun 30, 2026FundRenaissance Technologies cut 53% in Q2 2026 (13F filed Aug 13, 2026)

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
FiledTradedInsiderRoleTypeSharesPrice ($)ValueHoldingFiling
Oct 22Oct 21Cynthia L. TregillisGeneral CounselGeneral Counsel▼ SELL10b5-1807380.00$307K−0.7%Form 4 ↗
Sep 8Sep 4Vidyadhara K. GubbiChief of Global OperationsChief of Global Operations▼ SELL1,795459.87$825K−2.2%Form 4 ↗
Sep 8Sep 4Cynthia L. TregillisGeneral CounselGeneral Counsel▼ SELL10b5-1432451.20$195K−0.4%Form 4 ↗
Sep 2Aug 31Stephanie A. StreeterDirectorDirector (ind.)▼ SELL4,000447.82$1.79M−9.9%Form 4 ↗
Sep 2Sep 1Stephanie A. StreeterDirectorDirector (ind.)▼ SELL1,600455.00$728K−4.4%Form 4 ↗
Aug 27Aug 27Cynthia L. TregillisGeneral CounselGeneral Counsel▼ SELL10b5-11,007478.36$482K−0.9%Form 4 ↗
Aug 27Aug 26Cynthia L. TregillisGeneral CounselGeneral Counsel▼ SELL10b5-1476450.78$215K−0.4%Form 4 ↗
Aug 24Aug 24Cynthia L. TregillisGeneral CounselGeneral Counsel▼ SELL10b5-1684446.17$305K−0.6%Form 4 ↗
Aug 24Aug 21Cynthia L. TregillisGeneral CounselGeneral Counsel▼ SELL10b5-1235477.27$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

InsiderRoleBuysBoughtSellsSoldLatest
Cynthia L. TregillisGeneral Counsel0$06$1.62MOct 22, 2026
Vidyadhara K. GubbiChief of Global Operations0$01$825KSep 8, 2026
Stephanie A. StreeterDirector0$02$2.52MSep 2, 2026

Buybacks and executive pay

WESTERN DIGITAL CORP spent $149 million buying back its own shares in 2024.

From the company's XBRL data filed with the SEC. "Actually paid" is the SEC's pay-versus-performance measure, which counts changes in the value of stock awards. "Value of $100 invested" is the company's cumulative shareholder return as reported, usually measured from five years earlier. See all buybacks and CEO pay across companies.

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.

FundQuarterSharesValue% of portfolioChange
Renaissance TechnologiesQ2 2026537,473$343.3M0.47%▼ −53.1%
Bridgewater AssociatesQ2 2026172,415$110.1M0.45%▼ −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 →