Form 4 Tracker
WESTERN DIGITAL CORP
WDC

74 insider filings · Latest: Jun 17, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
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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Nov 3, 2025Nov 3 9:03 PMIRVING TAN
Proposed Sale
20,000$150.69$3.0M

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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
6.683186.16(D)

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May 25, 2026May 27 10:41 PMCynthia L TregillisChief Legal Officer & Corp Sec
Option Exercise
7.362311.047(D)

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May 25, 2026May 27 10:41 PMIrving TanDirector, Chief Executive Officer
Option Exercise
30.33882.273(D)

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May 25, 2026May 27 10:41 PMVidyadhara K GubbiChief of Global Operations
Option Exercise
8.666236.449(D)

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May 25, 2026May 27 10:41 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
7.362192.844(D)

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May 21, 2026May 22 11:24 PMCynthia L TregillisChief Legal Officer & Corp Sec
Option Exercise
10.589318.409(D)

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May 20, 2026May 22 11:24 PMCynthia L TregillisChief Legal Officer & Corp Sec
Option Exercise
3.63328.998(D)

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May 21, 2026May 22 11:23 PMIrving TanDirector, Chief Executive Officer
Option Exercise
23.681912.604(D)

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May 20, 2026May 22 11:23 PMIrving TanDirector, Chief Executive Officer
Option Exercise
12.56936.284(D)

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May 20, 2026May 22 11:23 PMKris SennesaelChief Financial Officer
Option Exercise
141.653436.436(D)

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May 21, 2026May 22 11:23 PMVidyadhara K GubbiChief of Global Operations
Option Exercise
5.259245.116(D)

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May 20, 2026May 22 11:23 PMVidyadhara K GubbiChief of Global Operations
Option Exercise
4.497250.374(D)

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May 21, 2026May 22 11:23 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
4.501200.206(D)

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May 20, 2026May 22 11:23 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
5.432204.706(D)

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Apr 20, 2026Apr 22 11:28 PMCynthia L TregillisChief Legal Officer & Corp Sec
Option Exercise
12.492332.628(D)

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Apr 20, 2026Apr 22 11:27 PMVidyadhara K GubbiChief of Global Operations
Option Exercise
34.812254.872(D)

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Mar 20, 2026Mar 24 10:17 PMIrving TanDirector, Chief Executive Officer
Option Exercise
49.344948.844(D)

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Mar 20, 2026Mar 24 9:53 PMBrian Scott DavisChief Sales & Mrktng Officer
Option Exercise
7.287210.138(D)

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Mar 18, 2026Mar 19 10:45 PMCynthia L TregillisChief Legal Officer & Corp Sec
Grant/Award
40.707345.12(D)

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Mar 18, 2026Mar 19 10:44 PMIrving TanDirector, Chief Executive Officer
Grant/Award
122.575998.188(D)

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