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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
2025-09-20 Tan Irving Chief Executive Officer Option exercise · Dividend Equivalent Rights −34.59 863.18
2025-09-20 Davis Brian Scott Chief Sales & Mrktng Officer Option exercise +5 135,976
2025-09-20 Davis Brian Scott Chief Sales & Mrktng Officer Shares withheld for taxes −961 $106.63 $102K 135,015
2025-09-20 Davis Brian Scott Chief Sales & Mrktng Officer Option exercise · Dividend Equivalent Rights −5.11 193.8
2025-09-18 Zamiska Gene M. SVP & Princ. Acctg Officer Grant or award · Dividend Equivalent Rights +26.13 72.49
2025-09-18 Tregillis Cynthia L Chief Legal Officer & Corp Sec Grant or award · Dividend Equivalent Rights +118.26 300.06
2025-09-18 Tan Irving Chief Executive Officer Grant or award · Dividend Equivalent Rights +368.8 897.77
2025-09-18 STREETER STEPHANIE A Director Grant or award · Dividend Equivalent Rights +6.07 16.83
2025-09-18 Shihab Ahmed Mohammed Chief Product Officer Grant or award · Dividend Equivalent Rights +175.46 439.74
2025-09-18 Sennesael Kris Chief Financial Officer Grant or award · Dividend Equivalent Rights +196.71 486.93
2025-09-18 Oulman Roxanne Director Grant or award · Dividend Equivalent Rights +3.88 10.75
2025-09-18 MASSENGILL MATTHEW E Director Grant or award · Dividend Equivalent Rights +26.02 72.16
2025-09-18 KIDDOO BRUCE E Director Grant or award · Dividend Equivalent Rights +3.88 10.75
2025-09-18 Gubbi Vidyadhara K Chief of Global Operations Grant or award · Dividend Equivalent Rights +103.09 257.99
2025-09-18 DOLUCA TUNC Director Grant or award · Dividend Equivalent Rights +5.2 14.43
2025-09-18 Davis Brian Scott Chief Sales & Mrktng Officer Grant or award · Dividend Equivalent Rights +79.77 198.91
2025-09-18 Cole Martin I Director Grant or award · Dividend Equivalent Rights +5.2 14.43
2025-09-18 Alexy Kimberly Director Grant or award · Dividend Equivalent Rights +3.58 9.93
2025-09-04 Gubbi Vidyadhara K Chief of Global Operations Sale −11,343 $90.29 $1.0M 151,596
2025-08-28 Zamiska Gene M. SVP & Princ. Acctg Officer Sale 10b5-1 −353 $80.90 $29K 27,425

Page 30 of 42 · 821 trades