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.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Morris John Christopher | EVP & CTO | 22,693 | Sep 22, 2026 | 17 |
| Romano Gianluca | EVP & CFO | 70,757 | Sep 16, 2026 | 19 |
| Chong Kian Fatt | EVP Global Operations | 25,093 | Sep 16, 2026 | 12 |
| Mosley William D | CEO | 378,108 | Sep 16, 2026 | 27 |
| Teh Ban Seng | EVP & Chief Commercial Officer | 5,810 | Sep 16, 2026 | 19 |
| Conyers Yolanda Lee | Director | 3,351 | Sep 3, 2026 | 6 |
| Lee James CI | EVP & CLO | 347 | Aug 26, 2026 | 10 |
| Arumugavelu Shankar | Director | 6,626 | Jun 4, 2026 | 4 |
| Bhatt Prat | Director | 12,869 | Jun 2, 2026 | 3 |
| Tilenius Stephanie | Director | 10,664 | May 6, 2026 | 4 |
| Geldmacher Jay L | Director | 223 | Feb 2, 2026 | 4 |
| Szlosek Thomas A | Director | 357 | Nov 12, 2025 | 1 |
| Cannon Michael R | Director | 13,439 | Oct 28, 2025 | 2 |
| Clemmer Richard L | Director | 29,704 | Oct 28, 2025 | 2 |
| Adams Mark | Director | 2,046 | Oct 28, 2025 | 2 |
| Haggart Dylan G. | Director | 14,515 | Oct 28, 2025 | 2 |
| Bruner Judy | Director | 14,314Indirect | Oct 21, 2025 | 1 |
| Bruggeworth Robert A | Director | 6,591 | Oct 22, 2024 | 0 |
| Schuelke Katherine | SVP, CLO & Corporate Secretary | 29,063 | Dec 12, 2023 | 0 |
| Zander Edward J | Director | 0 | Oct 24, 2023 | 0 |
| Naik Ravi | EVP, Lyve Storage Services | 38,857 | Mar 23, 2023 | 0 |
| Nygaard Jeffrey D. | EVP, Operations and Technology | 30,360 | Feb 2, 2023 | 0 |
| ValueAct Capital Management, L.P. | Director, Other: See Remarks | 7,870 | Oct 24, 2022 | 0 |
| ValueAct Capital Management, LLC | Director, Other: See Remarks | 7,870 | Oct 24, 2022 | 0 |
| VA Partners I, LLC | Director, Other: See Remarks | 7,870 | Oct 24, 2022 | 0 |
| ValueAct Holdings GP, LLC | Director, Other: See Remarks | 7,870 | Oct 24, 2022 | 0 |
| ValueAct Holdings, L.P. | Director, Other: See Remarks | 7,870 | Oct 24, 2022 | 0 |
| ValueAct Capital Master Fund, L.P. | Director, Other: See Remarks | 7,870 | Oct 24, 2022 | 0 |
| ValueAct Holdings II, L.P. | Director, Other: See Remarks | 7,870 | Oct 24, 2022 | 0 |
| Fochtman Jeffrey D. | SVP, Business & Marketing | 14,736 | Sep 14, 2022 | 0 |
| Luczo Stephen J | Director | 225,941Indirect | Mar 8, 2022 | 0 |
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.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 12, 2023 (view filing) | Dec 9 | 3 days | Schuelke KatherineSVP, CLO & Corporate Secretary | SSale | −248 | $80.59 | −$20.0K | −0.8%29.1K after | |
| Dec 1, 2023 (view filing) | Nov 29 | 2 days | Romano GianlucaEVP & CFO | SSale | −61.9K | $79.02 | −$4.89M | −49.4%63.4K after | Amended3 lots10b5-1 |
| Nov 16, 2023 (view filing) | Nov 15 | 1 day | Teh Ban SengEVP & Chief Commercial Officer | SSale | −5.00K | $75.00 | −$375.0K | −10.7%41.7K after | 2 lots10b5-1 |
| Nov 6, 2023 (view filing) | Nov 3 | 3 days | Romano GianlucaEVP & CFO | SSale | −17.0K | $73.34 | −$1.25M | −21.1%63.4K after | 2 lots10b5-1 |
| Oct 24, 2023 (view filing) | Oct 23 | 1 day | Zander Edward JDirector | SSale | −1.37K | $65.25 | −$89.4K | −100.0%0 after | |
| Sep 19, 2023 (view filing) | Sep 18 | 1 day | Schuelke KatherineSVP, CLO & Corporate Secretary | SSale | −2.35K | $64.39 | −$151.1K | −7.5%28.8K after | 10b5-1 |
| Sep 15, 2023 (view filing) | Sep 13 | 2 days | Schuelke KatherineSVP, CLO & Corporate Secretary | SSale | −7.83K | $63.10 | −$494.2K | −21.4%28.8K after | |
| Sep 5, 2023 (view filing) | Aug 31-Sep 1 | 5 days | Mosley William DChief Executive Officer | SSale | −298.9K | $71.17 | −$21.3M | −32.7%616.3K after | 8 lots10b5-1 |
| May 26, 2023 (view filing) | May 26 | Same day | Schuelke KatherineSVP, CLO & Corporate Secretary | SSale | −3.49K | $62.09 | −$216.5K | −10.8%28.7K after | |
| Feb 2, 2023 (view filing) | Feb 1 | 1 day | Nygaard Jeffrey D.EVP, Operations and Technology | SSale | −36.8K | $69.14 | −$2.54M | −54.8%30.4K after | 6 lots |
| Mar 8, 2022 (view filing) | Mar 4 | 4 days | Luczo Stephen JDirector | SSale | −50.0K | $103.26 | −$5.16M | −18.1%225.9K after | |
| Feb 24, 2022 (view filing) | Feb 22 | 2 days | Romano GianlucaEVP & CFO | SSale | −20.5K | $107.36 | −$2.20M | −51.4%19.4K after | 2 lots |
| Feb 22, 2022 (view filing)7:31 PM ET | Feb 17-22 | 5 days | ValueAct Capital Management, L.P. and 6 othersDirector, Other: See Remarks | SSale | −2.05M | $108.02 | −$221.4M | −13.2%13.4M after | 3 lots |
| Feb 1, 2022 (view filing) | Jan 31 | 1 day | Geldmacher Jay LDirector | SSale | −4.30K | $107.50 | −$462.3K | −61.2%2.73K after | |
| Jan 10, 2022 (view filing) | Jan 5 | 5 days | Nygaard Jeffrey D.Executive Vice President | SSale | −3.16K | $115.55 | −$364.9K | −100.0%0 after | Amended2 lots |
| Dec 13, 2021 (view filing) | Dec 10 | 3 days | Adams MarkDirector | SSale | −7.00K | $103.13 | −$721.9K | −36.3%12.3K after | 2 lots |
| Dec 13, 2021 (view filing) | Dec 10 | 3 days | Tilenius StephanieDirector | SSale | −14.0K | $102.04 | −$1.43M | −69.3%6.21K after | |
| Nov 15, 2021 (view filing)5:14 PM ET | Nov 11-15 | 4 days | ValueAct Capital Management, L.P. and 6 othersDirector, Other: See Remarks | SSale | −1.89M | $107.69 | −$203.5M | −10.9%15.5M after | 3 lots |
| Nov 10, 2021 (view filing) | Nov 9 | 1 day | Fochtman Jeffrey D.SVP, Business & Marketing | SSale | −2.29K | $98.85 | −$226.7K | −25.9%6.55K after | |
| Nov 9, 2021 (view filing) | Jul 8-Oct 7 | 124 daysLate | Naik RaviEVP & CIO | PPurchase | +322.72 | $83.72 | +$27.0K | +1.2%27.4K after | 2 lots |
| Nov 9, 2021 (view filing) | Nov 1-5 | 8 daysLate | Naik RaviEVP & CIO | SSale | −20.3K | $96.28 | −$1.96M | −42.9%27.1K after | 2 lots |
| Oct 6, 2021 (view filing) | Oct 4 | 2 days | Romano GianlucaEVP & CFO | SSale | −26.1K | $84.40 | −$2.21M | −54.9%21.5K after | 2 lots |
| Sep 15, 2021 (view filing) | Sep 13-14 | 2 days | Teh Ban SengEVP, Global Sales | SSale | −3.44K | $83.88 | −$289.0K | −28.3%8.71K after | 3 lots |
| Sep 14, 2021 (view filing) | Sep 10 | 4 days | Teh Ban SengEVP, Global Sales | SSale | −2.34K | $87.23 | −$204.1K | −21.2%8.71K after | |
| Sep 3, 2021 (view filing) | Sep 1 | 2 days | Mosley William DChief Executive Officer | SSale | −31.5K | $86.96 | −$2.74M | −5.4%550.6K after | 2 lots |
| Aug 10, 2021 (view filing) | Aug 6 | 4 days | Teh Ban SengEVP, Global Sales | SSale | −7.25K | $91.35 | −$662.3K | −67.5%3.49K after |