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 |
|---|---|---|---|---|---|---|---|---|---|
| Aug 11, 2026 (view filing)4:21 PM ET | Aug 7 | 4 days | Romano GianlucaEVP & CFO | SSale | −14.1K | $811.25 | −$11.4M | −39.5%21.5K after | 28 lots10b5-1 |
| Aug 11, 2026 (view filing)4:21 PM ET | Aug 7 | 4 days | Romano GianlucaEVP & CFO | SSale | −880 | $845.12 | −$743.7K | −4.1%20.7K after | 8 lots10b5-1 |
| Aug 14, 2026 (view filing)4:52 PM ET | Aug 13 | 1 day | Teh Ban SengEVP & Chief Commercial Officer | SSale | −7.36K | $920.80 | −$6.78M | −71.5%2.93K after | 2 lots |
| Aug 24, 2026 (view filing)5:10 PM ET | Aug 21 | 3 days | Mosley William DCEO | SSale | −18.1K | $849.35 | −$15.4M | −5.5%311.2K after | 3 lots |
| Aug 24, 2026 (view filing)5:10 PM ET | Aug 21 | 3 days | Romano GianlucaEVP & CFO | SSale | −9.08K | $849.35 | −$7.71M | −24.2%28.5K after | 3 lots |
| Aug 24, 2026 (view filing)5:11 PM ET | Aug 21 | 3 days | Lee James CIEVP & CLO | SSale | −3.94K | $849.35 | −$3.35M | −42.5%5.33K after | 3 lots |
| Aug 24, 2026 (view filing)5:11 PM ET | Aug 20-21 | 4 days | Morris John ChristopherEVP & CTO | SSale | −4.04K | $847.57 | −$3.42M | −20.7%15.5K after | 4 lots10b5-1 |
| Aug 24, 2026 (view filing)5:11 PM ET | Aug 20 | 4 days | Teh Ban SengEVP & Chief Commercial Officer | SSale | −6.05K | $842.97 | −$5.10M | −28.6%15.1K after | 19 lots10b5-1 |
| Aug 24, 2026 (view filing)5:11 PM ET | Aug 21 | 3 days | Teh Ban SengEVP & Chief Commercial Officer | SSale | −9.86K | $852.97 | −$8.41M | −65.4%5.21K after | 27 lots10b5-1 |
| Aug 26, 2026 (view filing)4:21 PM ET | Aug 24 | 2 days | Lee James CIEVP & CLO | SSale | −9.01K | $794.84 | −$7.16M | −96.3%347 after | 29 lots10b5-1 |
| Sep 3, 2026 (view filing)4:51 PM ET | Sep 1 | 2 days | Conyers Yolanda LeeDirector | SSale | −750 | $815.11 | −$611.3K | −18.3%3.35K after | 10b5-1 |
| Sep 3, 2026 (view filing)4:51 PM ET | Sep 1 | 2 days | Mosley William DCEO | SSale | −30.0K | $816.28 | −$24.5M | −9.2%295.2K after | 26 lots10b5-1 |
| Sep 11, 2026 (view filing)4:46 PM ET | Sep 10 | 1 day | Mosley William DCEO | SSale | −2.85K | $862.13 | −$2.46M | −0.9%297.5K after | 2 lots |
| Sep 11, 2026 (view filing)4:46 PM ET | Sep 10 | 1 day | Romano GianlucaEVP & CFO | SSale | −1.35K | $862.13 | −$1.16M | −4.4%29.6K after | 2 lots |
| Sep 11, 2026 (view filing)4:47 PM ET | Sep 10 | 1 day | Morris John ChristopherEVP & CTO | SSale | −572.25 | $862.13 | −$493.4K | −3.4%16.0K after | 2 lots |
| Sep 11, 2026 (view filing)4:47 PM ET | Sep 10 | 1 day | Teh Ban SengEVP & Chief Commercial Officer | SSale | −663 | $860.09 | −$570.2K | −10.2%5.81K after | 10b5-1 |
| Sep 15, 2026 (view filing)4:15 PM ET | Sep 14 | 1 day | Mosley William DCEO | SSale | −1.87K | $781.23 | −$1.46M | −0.6%299.0K after | |
| Sep 15, 2026 (view filing)4:15 PM ET | Sep 11 | 4 days | Romano GianlucaEVP & CFO | SSale | −45.9K | $830.01 | −$38.1M | −57.3%34.2K after | 24 lots10b5-1 |
| Sep 15, 2026 (view filing)4:15 PM ET | Sep 11-14 | 4 days | Romano GianlucaEVP & CFO | SSale | −5.55K | $841.95 | −$4.68M | −15.5%30.4K after | 15 lots10b5-1 |
| Sep 15, 2026 (view filing)4:15 PM ET | Sep 14 | 1 day | Morris John ChristopherEVP & CTO | SSale | −492.75 | $781.23 | −$385.0K | −2.9%16.5K after | |
| Sep 15, 2026 (view filing)4:16 PM ET | Sep 14 | 1 day | Teh Ban SengEVP & Chief Commercial Officer | SSale | −989 | $779.00 | −$770.4K | −14.5%5.81K after | 10b5-1 |
| Sep 16, 2026 (view filing)4:10 PM ET | Sep 15 | 1 day | Morris John ChristopherEVP & CTO | SSale | −15.5K | $772.15 | −$11.9M | −33.2%31.1K after | |
| Sep 16, 2026 (view filing)4:10 PM ET | Sep 15 | 1 day | Teh Ban SengEVP & Chief Commercial Officer | SSale | −52.7K | $782.08 | −$41.2M | −90.1%5.81K after | 24 lots10b5-1 |
| Sep 16, 2026 (view filing)4:10 PM ET | Sep 15 | 1 day | Mosley William DCEO | SSale | −97.9K | $772.14 | −$75.6M | −20.6%378.1K after | |
| Sep 16, 2026 (view filing)4:10 PM ET | Sep 15 | 1 day | Romano GianlucaEVP & CFO | SSale | −50.0K | $772.16 | −$38.6M | −41.4%70.8K after | |
| Sep 22, 2026 (view filing)4:49 PM ET | Sep 21 | 1 day | Morris John ChristopherEVP & CTO | SSale | −9.35K | $877.91 | −$8.21M | −29.2%22.7K after | 26 lots10b5-1 |