Seagate Technology plc (STX) has 483 open-market insider trades by 59 insiders since 2006. Over the last six months insiders net sold $174.2M. The most active filer is Stephen J. Luczo, Director.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Electronics Co Ltd /fi Samsung | 10% | — | 1 | $1.5B | 2013-10-21 |
| ValueAct Capital Management, LLC | Dir | — | 3 | $1.3B | 2021-05-03 |
| James Davidson | Dir | — | 18 | $977.2M | 2007-11-02 |
| Glenn H. Hutchins | Dir | — | 4 | $595.3M | 2006-08-16 |
| VA Partners I, LLC | Dir | — | 3 | $448.8M | 2022-02-22 |
| ValueAct Capital Master Fund, L.P. | Dir | — | 4 | $291.2M | 2021-11-15 |
| Stephen J. Luczo | Dir | — | 71 | $289.8M | 2022-03-04 |
| William D. Mosley | CEO | — | 20 | $152.1M | 2026-10-01 |
| ValueAct Capital Management, L.P. | Dir | — | 3 | $91.4M | 2018-11-30 |
| ValueAct Holdings, L.P. | Dir10% Owner | — | 1 | $86.6M | 2022-10-20 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| William D. Mosley | CEO | Sell | $17.4M | 2026-10-01 |
| William D. Mosley | CEO | Sell | $10.3M | 2026-10-01 |
| John Christopher Morris | CTO & VP | Sell | $8.2M | 2026-09-21 |
| Gianluca Romano | CFO & VP | Sell | $38.6M | 2026-09-15 |
| Ban Seng Teh | CCO & VP | Sell | $41.2M | 2026-09-15 |
| William D. Mosley | CEO | Sell | $75.6M | 2026-09-15 |
Companies that share insiders with STX, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| John Christopher Morris | CTO & VP | Sell | $11.9M | 2026-09-15 |
| Ban Seng Teh | CCO & VP | Sell | $770K | 2026-09-14 |
| John Christopher Morris | CTO & VP | Sell | $385K | 2026-09-14 |
| William D. Mosley | CEO | Sell | $1.5M | 2026-09-14 |
| Gianluca Romano | CFO & VP | Sell | $38.1M | 2026-09-11 |
| Gianluca Romano | CFO & VP | Sell | $4.7M | 2026-09-11 |
| John Christopher Morris | CTO & VP | Sell | $493K | 2026-09-10 |
| Ban Seng Teh | CCO & VP | Sell | $570K | 2026-09-10 |
| William D. Mosley | CEO | Sell | $2.5M | 2026-09-10 |