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Seagate Technology Holdings plc

STX
Exchange
Nasdaq
Industry
Computer Storage Devices
SEC CIK
0001137789

In the last 90 days, Seagate Technology Holdings plc insiders filed 0 open-market purchases and 34 sales; 1,973 institutions reported holding it in 13F filings for Q2 2026, worth $181.1B in total; 5 superinvestors hold it, including Lone Pine Capital and Tiger Global Management.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Seagate Technology Holdings plc insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
34 filings
6 insiders, $379.1M in total
Insiders trading
6
Net value
−$379.1M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Seagate Technology Holdings plc, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Seagate Technology Holdings plc
NameTitleLast reported holdingLast filingFilings, past year
Morris John ChristopherEVP & CTO22,693Sep 22, 202617
Romano GianlucaEVP & CFO70,757Sep 16, 202619
Chong Kian FattEVP Global Operations25,093Sep 16, 202612
Mosley William DCEO378,108Sep 16, 202627
Teh Ban SengEVP & Chief Commercial Officer5,810Sep 16, 202619
Conyers Yolanda LeeDirector3,351Sep 3, 20266
Lee James CIEVP & CLO347Aug 26, 202610
Arumugavelu ShankarDirector6,626Jun 4, 20264
Bhatt PratDirector12,869Jun 2, 20263
Tilenius StephanieDirector10,664May 6, 20264
Geldmacher Jay LDirector223Feb 2, 20264
Szlosek Thomas ADirector357Nov 12, 20251
Cannon Michael RDirector13,439Oct 28, 20252
Clemmer Richard LDirector29,704Oct 28, 20252
Adams MarkDirector2,046Oct 28, 20252
Haggart Dylan G.Director14,515Oct 28, 20252
Bruner JudyDirector14,314IndirectOct 21, 20251
Bruggeworth Robert ADirector6,591Oct 22, 20240
Schuelke KatherineSVP, CLO & Corporate Secretary29,063Dec 12, 20230
Zander Edward JDirector0Oct 24, 20230
Naik RaviEVP, Lyve Storage Services38,857Mar 23, 20230
Nygaard Jeffrey D.EVP, Operations and Technology30,360Feb 2, 20230
ValueAct Capital Management, L.P.Director, Other: See Remarks7,870Oct 24, 20220
ValueAct Capital Management, LLCDirector, Other: See Remarks7,870Oct 24, 20220
VA Partners I, LLCDirector, Other: See Remarks7,870Oct 24, 20220
ValueAct Holdings GP, LLCDirector, Other: See Remarks7,870Oct 24, 20220
ValueAct Holdings, L.P.Director, Other: See Remarks7,870Oct 24, 20220
ValueAct Capital Master Fund, L.P.Director, Other: See Remarks7,870Oct 24, 20220
ValueAct Holdings II, L.P.Director, Other: See Remarks7,870Oct 24, 20220
Fochtman Jeffrey D.SVP, Business & Marketing14,736Sep 14, 20220
Luczo Stephen JDirector225,941IndirectMar 8, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Sep 27, 2024 (view filing)Sep 261 dayTeh Ban SengEVP & Chief Commercial OfficerSSale−4.87K$110.00−$535.9K−32.8%9.97K after10b5-1
Oct 2, 2024 (view filing)Oct 11 dayMosley William DChief Executive OfficerSSale−20.0K$107.68−$2.15M−3.0%648.6K after3 lots10b5-1
Oct 22, 2024 (view filing)Oct 22Same dayMorris John ChristopherSVP & CTOSSale−1.13K$111.90−$126.6K−13.6%7.19K after10b5-1
Oct 24, 2024 (view filing)Oct 24Same dayGeldmacher Jay LDirectorSSale−4.10K$103.30−$423.5K−59.0%2.85K after
Nov 4, 2024 (view filing)Nov 13 daysMosley William DChief Executive OfficerSSale−20.0K$99.53−$1.99M−3.0%642.5K after3 lots10b5-1
Nov 12, 2024 (view filing)Nov 84 daysChong Kian FattSVP, Global OperationsSSale−9.18K$105.50−$968.7K−100.0%0 after
Nov 26, 2024 (view filing)Nov 22-254 daysRomano GianlucaEVP & CFOSSale−69.0K$101.43−$6.99M−59.8%46.3K after3 lots10b5-1
Dec 4, 2024 (view filing)Dec 22 daysConyers Yolanda LeeDirectorSSale−750$101.82−$76.4K−10.3%6.55K after10b5-1
Dec 4, 2024 (view filing)Dec 22 daysMosley William DChief Executive OfficerSSale−20.0K$102.83−$2.06M−3.1%622.5K after4 lots10b5-1
Dec 11, 2024 (view filing)Dec 101 dayMorris John ChristopherSVP & CTOSSale−75$98.85−$7.41K−1.0%7.39K after10b5-1
Dec 13, 2024 (view filing)Dec 121 dayMorris John ChristopherSVP & CTOSSale−141$98.46−$13.9K−1.8%7.76K after10b5-1
Jan 6, 2025 (view filing)Jan 24 daysMosley William DChief Executive OfficerSSale−20.0K$86.65−$1.73M−3.2%605.5K after2 lots10b5-1
Feb 5, 2025 (view filing)Feb 32 daysMosley William DChief Executive OfficerSSale−20.0K$94.13−$1.88M−3.3%585.6K after3 lots10b5-1
Mar 4, 2025 (view filing)Mar 31 dayConyers Yolanda LeeDirectorSSale−750$102.95−$77.2K−11.4%5.80K after10b5-1
Mar 4, 2025 (view filing)Mar 31 dayMosley William DChief Executive OfficerSSale−20.0K$101.57−$2.03M−3.4%572.6K after4 lots10b5-1
Apr 2, 2025 (view filing)Apr 11 dayMosley William DChief Executive OfficerSSale−20.0K$84.56−$1.69M−3.5%555.7K after2 lots10b5-1
May 23, 2025 (view filing)May 221 dayChong Kian FattSVP, Global OperationsSSale−6.41K$111.26−$713.2K−100.0%0 after
May 23, 2025 (view filing)May 221 dayBruner JudyDirectorSSale−10.4K$108.71−$1.14M−46.0%12.3K after
May 28, 2025 (view filing)May 271 dayTeh Ban SengEVP & Chief Commercial OfficerSSale−4.20K$115.00−$483.1K−15.4%23.0K after10b5-1
May 30, 2025 (view filing)May 29-301 dayRomano GianlucaEVP & CFOSSale−51.8K$117.45−$6.09M−57.6%38.1K after4 lots10b5-1
Jun 4, 2025 (view filing)May 2213 daysMosley William DChief Executive OfficerSSale−70.0K$109.47−$7.66M−11.6%535.7K afterAmended6 lots10b5-1
Jun 4, 2025 (view filing)Jun 2-32 daysMosley William DChief Executive OfficerSSale−70.0K$119.87−$8.39M−12.0%515.7K after4 lots10b5-1
Jun 4, 2025 (view filing)Jun 22 daysConyers Yolanda LeeDirectorSSale−750$117.01−$87.8K−12.9%5.05K after10b5-1
Jun 5, 2025 (view filing)Jun 3-42 daysTeh Ban SengEVP & Chief Commercial OfficerSSale−74.7K$124.24−$9.28M−83.6%14.7K after2 lots10b5-1
Jun 6, 2025 (view filing)Jun 24 daysLateCannon Michael RDirectorSSale−24.2K$119.00−$2.88M−69.1%10.8K after
Jun 6, 2025 (view filing)Jun 51 dayTilenius StephanieDirectorSSale−2.69K$128.04−$344.8K−18.0%12.2K after
Jun 10, 2025 (view filing)Jun 91 dayTeh Ban SengEVP & Chief Commercial OfficerSSale−3.59K$130.00−$467.2K−24.5%11.1K after10b5-1
Jun 10, 2025 (view filing)Jun 91 dayMosley William DChief Executive OfficerSSale−54.3K$130.19−$7.08M−9.5%515.7K after10b5-1
Jun 17, 2025 (view filing)Jun 161 dayTeh Ban SengEVP & Chief Commercial OfficerSSale−599$130.00−$77.9K−5.5%10.3K after10b5-1
Jul 2, 2025 (view filing)Jul 11 dayMosley William DChief Executive OfficerSSale−20.0K$144.66−$2.89M−3.9%498.7K after3 lots10b5-1
Jul 15, 2025 (view filing)Jun 1134 daysTeh Ban SengEVP & Chief Commercial OfficerSSale−1.72K$129.05−$222.4K−12.0%12.7K afterAmended10b5-1
Jul 15, 2025 (view filing)Jul 114 daysTeh Ban SengEVP & Chief Commercial OfficerSSale−1.73K$144.00−$248.4K−12.5%12.1K after10b5-1
Aug 4, 2025 (view filing)Aug 13 daysMosley William DChief Executive OfficerSSale−20.0K$153.75−$3.07M−4.0%478.9K after6 lots10b5-1
Aug 4, 2025 (view filing)Jul 31-Aug 14 daysLee James CIChief Legal OfficerSSale−4.63K$154.41−$714.1K−94.7%257 after7 lots10b5-1
Aug 4, 2025 (view filing)Aug 13 daysTeh Ban SengEVP & Chief Commercial OfficerSSale−5.91K$155.00−$915.3K−49.0%6.15K after
Aug 7, 2025 (view filing)Aug 61 dayGeldmacher Jay LDirectorSSale−2.50K$150.50−$376.3K−87.7%352 after
Aug 12, 2025 (view filing)Aug 111 dayTeh Ban SengEVP & Chief Commercial OfficerSSale−1.72K$151.61−$261.4K−21.9%6.15K after10b5-1
Sep 4, 2025 (view filing)Sep 22 daysMosley William DCEOSSale−20.0K$168.97−$3.38M−4.2%458.9K after6 lots10b5-1
Sep 4, 2025 (view filing)Sep 22 daysConyers Yolanda LeeDirectorSSale−750$168.80−$126.6K−14.8%4.30K after3 lots10b5-1
Sep 11, 2025 (view filing)Sep 101 dayTeh Ban SengEVP & Chief Commercial OfficerSSale−6.78K$191.53−$1.30M−56.6%5.19K after
Sep 15, 2025 (view filing)Sep 114 daysTeh Ban SengEVP & Chief Commercial OfficerSSale−3.73K$193.30−$721.4K−47.2%4.17K after10b5-1
Sep 15, 2025 (view filing)Sep 123 daysMorris John ChristopherEVP & CTOSSale−15.3K$195.80−$3.00M−60.9%9.84K after5 lots10b5-1
Sep 17, 2025 (view filing)Sep 161 dayMorris John ChristopherEVP & CTOSSale−377$211.26−$79.6K−2.8%13.2K after10b5-1
Oct 3, 2025 (view filing)Oct 12 daysMosley William DCEOSSale−20.0K$249.90−$5.00M−4.0%485.7K after21 lots10b5-1
Oct 15, 2025 (view filing)Oct 132 daysTeh Ban SengEVP & Chief Commercial OfficerSSale−1.41K$225.56−$318.0K−7.2%18.0K after10b5-1
Nov 3, 2025 (view filing)Oct 313 daysGeldmacher Jay LDirectorSSale−1.25K$269.10−$336.4K−52.1%1.15K after
Nov 3, 2025 (view filing)Oct 304 daysChong Kian FattEVP Global OperationsSSale−7.08K$272.14−$1.93M−100.0%0 after
Nov 5, 2025 (view filing)Nov 32 daysMosley William DCEOSSale−20.0K$262.82−$5.26M−4.1%465.7K after13 lots10b5-1
Nov 5, 2025 (view filing)Nov 32 daysTilenius StephanieDirectorSSale−2.05K$266.41−$545.1K−14.3%12.2K after
Nov 5, 2025 (view filing)Nov 5Same dayTeh Ban SengEVP & Chief Commercial OfficerSSale−6.00K$270.00−$1.62M−33.3%12.0K after