Form 4 Tracker
WESTERN DIGITAL CORP
WDC

109 insider filings · Latest: Sep 17, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Feb 17, 2026Feb 17 9:18 PMBRIAN SCOTT DAVIS
Proposed Sale
10,000$279.16$2.8M—

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Feb 6, 2026Feb 6 11:09 PMCynthia L TregillisChief Legal Officer & Corp Sec
Sale
6,780$270.49$1.8M136,538(D)

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Feb 5, 2026Feb 6 11:09 PMMatthew E MassengillDirector
Sale
36,926$260.43$9.6M0(I)

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Feb 6, 2026Feb 6 9:02 PMCYNTHIA LOCK TREGILLIS
Proposed Sale
6,780$270.49$1.8M—

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Feb 5, 2026Feb 5 9:29 PMMASSENGILL LIVING TRUST
Proposed Sale
36,926$269.41$9.9M—

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Feb 2, 2026Feb 4 11:17 PMIrving TanDirector, Chief Executive Officer
Sale
20,000$255.44$5.1M623,586(D)

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Feb 2, 2026Feb 2 9:06 PMIRVING TAN
Proposed Sale
20,000$255.44$5.1M—

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Jan 21, 2026Jan 21 10:14 PMCynthia L TregillisChief Legal Officer & Corp Sec
Sale
447$229.00$102.4K143,318(D)

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Jan 21, 2026Jan 21 9:01 PMCYNTHIA LOCK TREGILLIS
Proposed Sale
447$229.00$102.4K—

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Dec 5, 2025Dec 5 10:07 PMVIDYADHARA K GUBBI
Proposed Sale
6,469$168.47$1.1M—

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Dec 5, 2025Dec 5 9:04 PMVIDYADHARA K GUBBI
Proposed Sale
2,474$167.30$413.9K—

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Dec 4, 2025Dec 4 10:13 PMVIDYADHARA K GUBBI
Proposed Sale
13,877$159.94$2.2M—

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Dec 4, 2025Dec 4 9:07 PMKIMBERLY ALEXY
Proposed Sale
2,000$160.08$320.2K—

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Dec 2, 2025Dec 2 9:05 PMCynthia LOCK TREGILLIS
Proposed Sale
2,801$160.57$449.8K—

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Nov 26, 2025Nov 26 9:01 PMGENE M ZAMISKA
Proposed Sale
814$157.03$127.8K—

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Nov 25, 2025Nov 25 9:23 PMROXANNE OULMAN
Proposed Sale
1,800$154.42$278.0K—

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Nov 25, 2025Nov 25 9:12 PMKIMBERLY ALEXY
Proposed Sale
1,768$154.00$272.3K—

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Nov 24, 2025Nov 24 9:03 PMGENE M ZAMISKA
Proposed Sale
458$142.59$65.3K—

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Nov 21, 2025Nov 21 9:03 PMGENE M ZAMISKA
Proposed Sale
468$139.50$65.3K—

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Nov 5, 2025Nov 5 9:02 PMMartin I Cole
Proposed Sale
16,000$152.18$2.4M—

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Sep 17, 2026Sep 21 10:36 PMCynthia L TregillisChief Legal Officer & Corp Sec
Grant/Award
27.38—297.862(D)

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Sep 20, 2026Sep 21 10:36 PMIrving TanDirector, Chief Executive Officer
Option Exercise
56.762—800.476(D)

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Sep 17, 2026Sep 21 10:36 PMIrving TanDirector, Chief Executive Officer
Grant/Award
83.3—857.238(D)

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Sep 17, 2026Sep 21 10:36 PMStephanie A StreeterDirector
Grant/Award
0.562—2.678(D)

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Sep 17, 2026Sep 21 10:36 PMAhmed Mohammed ShihabChief Product Officer
Option Exercise
56.524—396.633(D)

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Sep 17, 2026Sep 21 10:36 PMAhmed Mohammed ShihabChief Product Officer
Grant/Award
42.195—453.157(D)

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Sep 17, 2026Sep 21 10:35 PMKris SennesaelChief Financial Officer
Grant/Award
46.508—490.83(D)

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Sep 17, 2026Sep 21 10:35 PMRoxanne OulmanDirector
Grant/Award
0.562—2.678(D)

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Sep 17, 2026Sep 21 10:34 PMMatthew E MassengillDirector
Grant/Award
10.265—121.111(D)

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Sep 17, 2026Sep 21 10:34 PMBruce E KiddooDirector
Grant/Award
0.562—2.678(D)

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Sep 17, 2026Sep 21 10:34 PMVidyadhara K GubbiChief of Global Operations
Grant/Award
21.023—215.148(D)

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Sep 17, 2026Sep 21 10:33 PMBrad FellerSVP, Global Accounting & Chief
Grant/Award
4.242—17.472(D)

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Sep 17, 2026Sep 21 10:32 PMTunc DolucaDirector
Grant/Award
0.562—2.678(D)

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Sep 20, 2026Sep 21 10:32 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
8.386—165.683(D)

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Sep 17, 2026Sep 21 10:32 PMBrian Scott DavisChief Sales & Mrktng Officer
Grant/Award
16.811—174.069(D)

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Sep 17, 2026Sep 21 10:32 PMManuvir DasDirector
Grant/Award
0.273—0.436(D)

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Sep 17, 2026Sep 21 10:32 PMMartin I ColeDirector
Grant/Award
0.679—3.236(D)

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Sep 17, 2026Sep 21 10:31 PMKimberly AlexyDirector
Grant/Award
0.562—2.678(D)

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Sep 3, 2026Sep 9 12:13 AMCynthia L TregillisChief Legal Officer & Corp Sec
Option Exercise
7.058—270.482(D)

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Sep 3, 2026Sep 9 12:13 AMVidyadhara K GubbiChief of Global Operations
Option Exercise
14.117—194.124(D)

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