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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
Dec 12, 2023 (view filing)Dec 93 daysSchuelke KatherineSVP, CLO & Corporate SecretarySSale−248$80.59−$20.0K−0.8%29.1K after
Dec 1, 2023 (view filing)Nov 292 daysRomano GianlucaEVP & CFOSSale−61.9K$79.02−$4.89M−49.4%63.4K afterAmended3 lots10b5-1
Nov 16, 2023 (view filing)Nov 151 dayTeh Ban SengEVP & Chief Commercial OfficerSSale−5.00K$75.00−$375.0K−10.7%41.7K after2 lots10b5-1
Nov 6, 2023 (view filing)Nov 33 daysRomano GianlucaEVP & CFOSSale−17.0K$73.34−$1.25M−21.1%63.4K after2 lots10b5-1
Oct 24, 2023 (view filing)Oct 231 dayZander Edward JDirectorSSale−1.37K$65.25−$89.4K−100.0%0 after
Sep 19, 2023 (view filing)Sep 181 daySchuelke KatherineSVP, CLO & Corporate SecretarySSale−2.35K$64.39−$151.1K−7.5%28.8K after10b5-1
Sep 15, 2023 (view filing)Sep 132 daysSchuelke KatherineSVP, CLO & Corporate SecretarySSale−7.83K$63.10−$494.2K−21.4%28.8K after
Sep 5, 2023 (view filing)Aug 31-Sep 15 daysMosley William DChief Executive OfficerSSale−298.9K$71.17−$21.3M−32.7%616.3K after8 lots10b5-1
May 26, 2023 (view filing)May 26Same daySchuelke KatherineSVP, CLO & Corporate SecretarySSale−3.49K$62.09−$216.5K−10.8%28.7K after
Feb 2, 2023 (view filing)Feb 11 dayNygaard Jeffrey D.EVP, Operations and TechnologySSale−36.8K$69.14−$2.54M−54.8%30.4K after6 lots
Mar 8, 2022 (view filing)Mar 44 daysLuczo Stephen JDirectorSSale−50.0K$103.26−$5.16M−18.1%225.9K after
Feb 24, 2022 (view filing)Feb 222 daysRomano GianlucaEVP & CFOSSale−20.5K$107.36−$2.20M−51.4%19.4K after2 lots
Feb 22, 2022 (view filing)7:31 PM ETFeb 17-225 daysValueAct Capital Management, L.P. and 6 othersDirector, Other: See RemarksSSale−2.05M$108.02−$221.4M−13.2%13.4M after3 lots
Feb 1, 2022 (view filing)Jan 311 dayGeldmacher Jay LDirectorSSale−4.30K$107.50−$462.3K−61.2%2.73K after
Jan 10, 2022 (view filing)Jan 55 daysNygaard Jeffrey D.Executive Vice PresidentSSale−3.16K$115.55−$364.9K−100.0%0 afterAmended2 lots
Dec 13, 2021 (view filing)Dec 103 daysAdams MarkDirectorSSale−7.00K$103.13−$721.9K−36.3%12.3K after2 lots
Dec 13, 2021 (view filing)Dec 103 daysTilenius StephanieDirectorSSale−14.0K$102.04−$1.43M−69.3%6.21K after
Nov 15, 2021 (view filing)5:14 PM ETNov 11-154 daysValueAct Capital Management, L.P. and 6 othersDirector, Other: See RemarksSSale−1.89M$107.69−$203.5M−10.9%15.5M after3 lots
Nov 10, 2021 (view filing)Nov 91 dayFochtman Jeffrey D.SVP, Business & MarketingSSale−2.29K$98.85−$226.7K−25.9%6.55K after
Nov 9, 2021 (view filing)Jul 8-Oct 7124 daysLateNaik RaviEVP & CIOPPurchase+322.72$83.72+$27.0K+1.2%27.4K after2 lots
Nov 9, 2021 (view filing)Nov 1-58 daysLateNaik RaviEVP & CIOSSale−20.3K$96.28−$1.96M−42.9%27.1K after2 lots
Oct 6, 2021 (view filing)Oct 42 daysRomano GianlucaEVP & CFOSSale−26.1K$84.40−$2.21M−54.9%21.5K after2 lots
Sep 15, 2021 (view filing)Sep 13-142 daysTeh Ban SengEVP, Global SalesSSale−3.44K$83.88−$289.0K−28.3%8.71K after3 lots
Sep 14, 2021 (view filing)Sep 104 daysTeh Ban SengEVP, Global SalesSSale−2.34K$87.23−$204.1K−21.2%8.71K after
Sep 3, 2021 (view filing)Sep 12 daysMosley William DChief Executive OfficerSSale−31.5K$86.96−$2.74M−5.4%550.6K after2 lots
Aug 10, 2021 (view filing)Aug 64 daysTeh Ban SengEVP, Global SalesSSale−7.25K$91.35−$662.3K−67.5%3.49K after