Form 4 Tracker
WESTERN DIGITAL CORP
WDC

109 insider filings · Latest: Sep 17, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Jul 21, 2026Jul 21 8:02 PMCYNTHIA LOCK TREGILLIS
Proposed Sale
808$529.63$427.9K—

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Jun 9, 2026Jun 11 9:50 PMMartin I ColeDirector
Sale
720$536.01$385.9K25,433(D)

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Jun 9, 2026Jun 11 9:47 PMMartin I ColeDirector
Sale
3,280$511.16$1.7M26,153(D)

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Jun 9, 2026Jun 9 9:17 PMMartin I Cole
Proposed Sale
8,000$526.93$4.2M—

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Jun 5, 2026Jun 5 10:58 PMCynthia L TregillisChief Legal Officer & Corp Sec
Sale
432$545.60$235.7K116,643(D)

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Jun 5, 2026Jun 5 8:07 PMCYNTHIA LOCK TREGILLIS
Proposed Sale
432$545.60$235.7K—

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Jun 1, 2026Jun 2 9:17 PMVidyadhara K GubbiChief of Global Operations
Sale
2,475$556.24$1.4M85,154(D)

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Jun 1, 2026Jun 1 8:14 PMVIDYADHARA K GUBBI
Proposed Sale
2,475$556.24$1.4M—

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May 28, 2026May 29 10:13 PMBruce E KiddooDirector
Sale
750$528.52$396.4K3,903(D)

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May 28, 2026May 28 10:05 PMKIDDOO FAMILY TRUST U/A DTD 02/07/2012
Proposed Sale
750$528.52$396.4K—

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May 27, 2026May 27 10:41 PMCynthia L TregillisChief Legal Officer & Corp Sec
Sale
214$539.63$115.5K117,157(D)

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May 22, 2026May 27 10:41 PMCynthia L TregillisChief Legal Officer & Corp Sec
Sale
308$488.61$150.5K118,135(D)

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May 27, 2026May 27 8:04 PMCYNTHIA LOCK TREGILLIS
Proposed Sale
214$539.63$115.5K—

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May 21, 2026May 22 11:24 PMCynthia L TregillisChief Legal Officer & Corp Sec
Sale
106$458.87$48.6K118,443(D)

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May 22, 2026May 22 8:26 PMCYNTHIA LOCK TREGILLIS
Proposed Sale
308$488.61$150.5K—

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May 21, 2026May 21 8:01 PMCYNTHIA LOCK TREGILLIS
Proposed Sale
106$458.87$48.6K—

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May 11, 2026May 13 1:06 AMBrian Scott DavisChief Sales & Mrktng Officer
Sale
10,000$500.69$5.0M105,564(D)

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May 11, 2026May 11 8:01 PMBRIAN SCOTT DAVIS
Proposed Sale
10,000$500.69$5.0M—

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May 4, 2026May 5 10:14 PMVidyadhara K GubbiChief of Global Operations
Sale
4,674$443.19$2.1M90,041(D)

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May 1, 2026May 5 10:14 PMIrving TanDirector, Chief Executive Officer
Sale
20,000$411.84$8.2M598,150(D)

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Jun 3, 2026Jun 5 10:39 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
6.683—186.16(D)

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May 25, 2026May 27 10:41 PMCynthia L TregillisChief Legal Officer & Corp Sec
Option Exercise
7.362—311.047(D)

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May 25, 2026May 27 10:41 PMIrving TanDirector, Chief Executive Officer
Option Exercise
30.33—882.273(D)

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May 25, 2026May 27 10:41 PMVidyadhara K GubbiChief of Global Operations
Option Exercise
8.666—236.449(D)

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May 25, 2026May 27 10:41 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
7.362—192.844(D)

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May 21, 2026May 22 11:24 PMCynthia L TregillisChief Legal Officer & Corp Sec
Option Exercise
10.589—318.409(D)

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May 20, 2026May 22 11:24 PMCynthia L TregillisChief Legal Officer & Corp Sec
Option Exercise
3.63—328.998(D)

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May 21, 2026May 22 11:23 PMIrving TanDirector, Chief Executive Officer
Option Exercise
23.681—912.604(D)

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May 20, 2026May 22 11:23 PMIrving TanDirector, Chief Executive Officer
Option Exercise
12.56—936.284(D)

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May 20, 2026May 22 11:23 PMKris SennesaelChief Financial Officer
Option Exercise
141.653—436.436(D)

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May 21, 2026May 22 11:23 PMVidyadhara K GubbiChief of Global Operations
Option Exercise
5.259—245.116(D)

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May 20, 2026May 22 11:23 PMVidyadhara K GubbiChief of Global Operations
Option Exercise
4.497—250.374(D)

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May 21, 2026May 22 11:23 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
4.501—200.206(D)

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May 20, 2026May 22 11:23 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
5.432—204.706(D)

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Apr 20, 2026Apr 22 11:28 PMCynthia L TregillisChief Legal Officer & Corp Sec
Option Exercise
12.492—332.628(D)

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Apr 20, 2026Apr 22 11:27 PMVidyadhara K GubbiChief of Global Operations
Option Exercise
34.812—254.872(D)

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Mar 20, 2026Mar 24 10:17 PMIrving TanDirector, Chief Executive Officer
Option Exercise
49.344—948.844(D)

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Mar 20, 2026Mar 24 9:53 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
7.287—210.138(D)

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Mar 18, 2026Mar 19 10:45 PMCynthia L TregillisChief Legal Officer & Corp Sec
Grant/Award
40.707—345.12(D)

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Mar 18, 2026Mar 19 10:44 PMIrving TanDirector, Chief Executive Officer
Grant/Award
122.575—998.188(D)

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