Form 4 Tracker
Seagate Technology Holdings plc
STX

89 insider filings · Latest: Oct 1, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Sep 14, 2026Sep 14 11:57 PMMOSLEY WILLIAM D
Proposed Sale
1,963$781.32$1.5M—

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Sep 14, 2026Sep 14 8:38 PMBAN SENG TEH
Proposed Sale
989$779.00$770.4K—

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Sep 10, 2026Sep 11 8:47 PMBan Seng TehEVP & Chief Commercial Officer
Sale
663$860.09$570.2K5,810(D)

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Sep 10, 2026Sep 11 8:47 PMJohn Christopher MorrisEVP & CTO
Sale
572.25$862.13$493.4K16,018.5(D)

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Sep 10, 2026Sep 11 8:46 PMGianluca RomanoEVP & CFO
Sale
1,348$862.13$1.2M29,620(D)

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Sep 10, 2026Sep 11 8:46 PMWilliam D MosleyDirector, CEO
Sale
2,849.25$862.13$2.5M297,548.25(D)

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Sep 11, 2026Sep 11 8:32 PMGIANLUCA ROMANO
Proposed Sale
50,498$862.33$43.5M—

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Sep 10, 2026Sep 10 11:40 PMMorris John Christopher
Proposed Sale
601$861.93$518.0K—

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Sep 10, 2026Sep 10 11:36 PMMOSLEY WILLIAM D
Proposed Sale
2,992$862.05$2.6M—

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Sep 10, 2026Sep 10 11:28 PMRomano Gianluca
Proposed Sale
1,415$862.38$1.2M—

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Sep 10, 2026Sep 10 8:04 PMBAN SENG TEH
Proposed Sale
663$860.09$570.2K—

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Sep 1, 2026Sep 3 8:51 PMWilliam D MosleyDirector, CEO
Sale
30,000$816.28$24.5M295,167.5(D)

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Sep 1, 2026Sep 3 8:51 PMYolanda Lee ConyersDirector
Sale
750$815.11$611.3K3,351(D)

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Sep 1, 2026Sep 1 8:41 PMWILLIAM D. MOSLEY
Proposed Sale
90,000$828.38$74.6M—

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Sep 1, 2026Sep 1 8:39 PMYOLANDA CONYERS
Proposed Sale
750$828.38$621.3K—

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Aug 24, 2026Aug 26 8:21 PMJames CI LeeEVP & CLO
Sale
9,013$794.84$7.2M347(D)

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Aug 21, 2026Aug 24 9:11 PMBan Seng TehEVP & Chief Commercial Officer
Sale
9,862$852.97$8.4M5,210(D)

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Aug 20, 2026Aug 24 9:11 PMBan Seng TehEVP & Chief Commercial Officer
Sale
6,048$842.97$5.1M15,072(D)

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Aug 21, 2026Aug 24 9:11 PMJohn Christopher MorrisEVP & CTO
Sale
3,515.5$849.35$3.0M15,459.75(D)

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Aug 20, 2026Aug 24 9:11 PMJohn Christopher MorrisEVP & CTO
Sale
523$835.54$437.0K15,459.75(D)

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Oct 1, 2026Oct 2 8:07 PMWilliam D MosleyDirector, CEO
Option Exercise
14,000$46.2383,100(D)

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Sep 21, 2026Sep 22 8:49 PMJohn Christopher MorrisEVP & CTO
Option Exercise
915$158.4017,378(D)

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Sep 14, 2026Sep 16 8:10 PMGianluca RomanoEVP & CFO
Option Exercise
90,380$0.000(D)

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Sep 14, 2026Sep 16 8:10 PMKian Fatt ChongEVP Global Operations
Option Exercise
14,470$0.000(D)

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Sep 14, 2026Sep 16 8:10 PMWilliam D MosleyDirector, CEO
Option Exercise
177,000$0.000(D)

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Sep 14, 2026Sep 16 8:10 PMBan Seng TehEVP & Chief Commercial Officer
Option Exercise
52,730$0.000(D)

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Sep 14, 2026Sep 16 8:10 PMJohn Christopher MorrisEVP & CTO
Option Exercise
30,130$0.000(D)

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Sep 11, 2026Sep 15 8:16 PMBan Seng TehEVP & Chief Commercial Officer
Option Exercise
989$0.003,956(D)

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Sep 11, 2026Sep 15 8:16 PMKian Fatt ChongEVP Global Operations
Option Exercise
678$0.002,714(D)

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Sep 11, 2026Sep 15 8:15 PMJohn Christopher MorrisEVP & CTO
Option Exercise
942$0.003,768(D)

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Sep 11, 2026Sep 15 8:15 PMGianluca RomanoEVP & CFO
Option Exercise
1,695$0.006,780(D)

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Sep 11, 2026Sep 15 8:15 PMGianluca RomanoEVP & CFO
Option Exercise
50,498$158.4040,317(D)

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Sep 11, 2026Sep 15 8:15 PMWilliam D MosleyDirector, CEO
Option Exercise
3,319$0.0013,276(D)

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Sep 9, 2026Sep 11 8:47 PMKian Fatt ChongEVP Global Operations
Option Exercise
581$0.003,033(D)

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Sep 9, 2026Sep 11 8:47 PMBan Seng TehEVP & Chief Commercial Officer
Option Exercise
1,263$0.005,306(D)

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Sep 9, 2026Sep 11 8:47 PMJohn Christopher MorrisEVP & CTO
Option Exercise
1,131$0.005,055(D)

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Sep 9, 2026Sep 11 8:46 PMGianluca RomanoEVP & CFO
Option Exercise
2,474$0.0012,128(D)

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Sep 9, 2026Sep 11 8:46 PMWilliam D MosleyDirector, CEO
Option Exercise
5,230$0.0019,328(D)

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Sep 1, 2026Sep 3 8:51 PMWilliam D MosleyDirector, CEO
Option Exercise
14,000$46.2397,100(D)

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Aug 24, 2026Aug 26 8:21 PMJames CI LeeEVP & CLO
Option Exercise
4,032$158.4012,096(D)

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