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CIK 0000106040 · Large accelerated filer

WESTERN DIGITAL CORP

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Ticker
WDC
Exchange
Nasdaq
Industry
Computer Storage Devices
FY end
Jul 3
Incorporated
DE
Entity type
operating
EIN
330956711
Phone
408-717-6000
Business address
5601 GREAT OAKS PARKWAY, SAN JOSE, CA, 95119
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$6,541,831
in 7 filings, $3.2M under 10b5-1 plans

Net −$6,541,831. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. STREETER STEPHANIE A −$2.5M Director sold 14% of stake
  2. Tregillis Cynthia L −$1.6M Chief Legal Officer & Corp Sec sold 3% of stake
  3. Cole Martin I −$1.6M Director sold 19% of stake
  4. Gubbi Vidyadhara K −$825K Chief of Global Operations sold 2% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-10-29 Cole Martin I Director Sale 10b5-1 −204 $390.04 $80K 21,229
2026-10-29 Cole Martin I Director Sale 10b5-1 −385 $391.05 $151K 20,844
2026-10-29 Cole Martin I Director Sale 10b5-1 −407 $392.42 $160K 20,437
2026-10-29 Cole Martin I Director Sale 10b5-1 −494 $393.22 $194K 19,943
2026-10-29 Cole Martin I Director Sale 10b5-1 −243 $394.41 $96K 19,700
2026-10-29 Cole Martin I Director Sale 10b5-1 −209 $395.30 $83K 19,491
2026-10-29 Cole Martin I Director Sale 10b5-1 −317 $396.31 $126K 19,174
2026-10-29 Cole Martin I Director Sale 10b5-1 −584 $397.48 $232K 18,590
2026-10-29 Cole Martin I Director Sale 10b5-1 −723 $398.45 $288K 17,867
2026-10-29 Cole Martin I Director Sale 10b5-1 −303 $399.36 $121K 17,564
2026-10-29 Cole Martin I Director Sale 10b5-1 −88 $400.33 $35K 17,476
2026-10-29 Cole Martin I Director Sale 10b5-1 −43 $401.47 $17K 17,433
2026-10-21 Tregillis Cynthia L Chief Legal Officer & Corp Sec Sale 10b5-1 −807 $380.00 $307K 108,927.66
2026-10-20 Tregillis Cynthia L Chief Legal Officer & Corp Sec Option exercise 10b5-1 +14.37 111,044.37
2026-10-20 Tregillis Cynthia L Chief Legal Officer & Corp Sec Shares withheld for taxes 10b5-1 −1,309.71 $364.32 $477K 109,734.66
2026-10-20 Tregillis Cynthia L Chief Legal Officer & Corp Sec Option exercise · Dividend Equivalent Rights 10b5-1 −14.37 283.49
2026-09-20 Tan Irving Chief Executive Officer Option exercise +56.76 266,703.76
2026-09-20 Tan Irving Chief Executive Officer Shares withheld for taxes −1,091.04 $441.36 $482K 265,612.73
2026-09-20 Tan Irving Chief Executive Officer Option exercise · Dividend Equivalent Rights −56.76 800.48
2026-09-20 Davis Brian Scott Chief Sales & Mrktng Officer Option exercise +8.39 100,454.39

Page 1 of 42 · 821 trades