STX: Seagate Technology Holdings plc insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 44 sales totaling $27.67M in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-01 | Mosley William D | CEO | $334K | yes |
| 2026-10-01 | Mosley William D | CEO | $795K | yes |
| 2026-10-01 | Mosley William D | CEO | $1.55M | yes |
| 2026-10-01 | Mosley William D | CEO | $1.23M | yes |
| 2026-10-01 | Mosley William D | CEO | $784K | yes |
| 2026-10-01 | Mosley William D | CEO | $768K | yes |
| 2026-10-01 | Mosley William D | CEO | $598K | yes |
| 2026-10-01 | Mosley William D | CEO | $711K | yes |
| 2026-10-01 | Mosley William D | CEO | $543K | yes |
| 2026-10-01 | Mosley William D | CEO | $601K | yes |
| 2026-10-01 | Mosley William D | CEO | $676K | yes |
| 2026-10-01 | Mosley William D | CEO | $75K | yes |
| 2026-10-01 | Mosley William D | CEO | $38K | yes |
| 2026-10-01 | Mosley William D | CEO | $264K | yes |
| 2026-10-01 | Mosley William D | CEO | $416K | yes |
| 2026-10-01 | Mosley William D | CEO | $910K | yes |
| 2026-10-01 | Mosley William D | CEO | $323K | yes |
| 2026-10-01 | Mosley William D | CEO | $466K | yes |
| 2026-10-01 | Mosley William D | CEO | $397K | yes |
| 2026-10-01 | Mosley William D | CEO | $347K | yes |
| 2026-10-01 | Mosley William D | CEO | $629K | yes |
| 2026-10-01 | Mosley William D | CEO | $434K | yes |
| 2026-10-01 | Mosley William D | CEO | $435K | yes |
| 2026-10-01 | Mosley William D | CEO | $545K | yes |
| 2026-10-01 | Mosley William D | CEO | $508K | yes |
| 2026-10-01 | Mosley William D | CEO | $933K | yes |
| 2026-10-01 | Mosley William D | CEO | $279K | yes |
| 2026-10-01 | Mosley William D | CEO | $765K | yes |
| 2026-10-01 | Mosley William D | CEO | $1.05M | yes |
| 2026-10-01 | Mosley William D | CEO | $636K | yes |
| 2026-10-01 | Mosley William D | CEO | $826K | yes |
| 2026-10-01 | Mosley William D | CEO | $878K | yes |
| 2026-10-01 | Mosley William D | CEO | $440K | yes |
| 2026-10-01 | Mosley William D | CEO | $367K | yes |
| 2026-10-01 | Mosley William D | CEO | $845K | yes |
| 2026-10-01 | Mosley William D | CEO | $772K | yes |
| 2026-10-01 | Mosley William D | CEO | $580K | yes |
| 2026-10-01 | Mosley William D | CEO | $857K | yes |
| 2026-10-01 | Mosley William D | CEO | $738K | yes |
| 2026-10-01 | Mosley William D | CEO | $702K | yes |
| 2026-10-01 | Mosley William D | CEO | $592K | yes |
| 2026-10-01 | Mosley William D | CEO | $1000K | yes |
| 2026-10-01 | Mosley William D | CEO | $445K | yes |
| 2026-10-01 | Mosley William D | CEO | $594K | yes |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-05 | Fell below 5% | Sanders Capital, LLC | 1.56% | SEC |
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