Form 4: Seagate Technology Holdings CEO Sells Shares
Insider Transaction (Form 4)
William D Mosley, CEO and a Director of Seagate Technology Holdings plc, sold 18,138 shares of common stock on August 20, 2026 for $849.35 per share.
Summary
- Option exercise/conversion: acquired 6,404 Ordinary Shares on August 20, 2026; holds 301,921 after (Direct).
- Open-market sale: disposed of 3,438 Ordinary Shares at $849.35 ($2,919,869) on August 21, 2026; holds 298,483 after (Direct).
- Option exercise/conversion: acquired 21,065 Ordinary Shares on August 20, 2026; holds 319,548 after (Direct).
- Open-market sale: disposed of 11,308 Ordinary Shares at $849.35 ($9,604,504) on August 21, 2026; holds 308,240 after (Direct).
- Option exercise/conversion: acquired 6,320 Ordinary Shares on August 20, 2026; holds 314,560 after (Direct).
- Open-market sale: disposed of 3,393 Ordinary Shares at $849.35 ($2,881,648) on August 21, 2026; holds 311,168 after (Direct).
- Option exercise/conversion: disposed of 6,404 Restricted Share Unit on August 20, 2026; holds 19,213 after (Direct).
- Option exercise/conversion: disposed of 6,320 Restricted Share Unit on August 20, 2026 (Direct).
- Option exercise/conversion: disposed of 21,065 Restricted Share Unit on August 20, 2026 (Direct).
- Grant/award: acquired 5,309 Restricted Share Unit on August 20, 2026; holds 5,309 after (Direct).
- Grant/award: acquired 5,280 Restricted Share Unit on August 20, 2026; holds 5,280 after (Direct).
- Grant/award: acquired 1,584 Restricted Share Unit on August 20, 2026; holds 1,584 after (Direct).
- Grant/award: acquired 31,856 NQ Stock Option on August 20, 2026; holds 31,856 after (Direct).
Sentiment
Score: 2
Explanation: StockSavvy.ai views this as a mildly negative signal: an insider sold $15,406,022 of stock on the open market.
Insider Transactions
William D Mosley — Director, Officer (CEO)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-20 | Option exercise/conversion | Ordinary Shares | 6,404 | — | — | 301,921 |
| 2026-08-21 | Open-market sale | Ordinary Shares | 3,437.75 | $849 | $2.9M | 298,483.25 |
| 2026-08-20 | Option exercise/conversion | Ordinary Shares | 21,065 | — | — | 319,548.25 |
| 2026-08-21 | Open-market sale | Ordinary Shares | 11,308 | $849 | $9.6M | 308,240.25 |
| 2026-08-20 | Option exercise/conversion | Ordinary Shares | 6,320 | — | — | 314,560.25 |
| 2026-08-21 | Open-market sale | Ordinary Shares | 3,392.75 | $849 | $2.9M | 311,167.5 |
| 2026-08-20 | Option exercise/conversion | Restricted Share Unit | 6,404 | — | — | 19,213 |
| 2026-08-20 | Option exercise/conversion | Restricted Share Unit | 6,320 | — | — | 0 |
| 2026-08-20 | Option exercise/conversion | Restricted Share Unit | 21,065 | — | — | 0 |
| 2026-08-20 | Grant/award | Restricted Share Unit | 5,309 | — | — | 5,309 |
| 2026-08-20 | Grant/award | Restricted Share Unit | 5,280 | — | — | 5,280 |
| 2026-08-20 | Grant/award | Restricted Share Unit | 1,584 | — | — | 1,584 |
| 2026-08-20 | Grant/award | NQ Stock Option | 31,856 | — | — | 31,856 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-20 | Option exercise/conversion (6,404 shares) |
| 2026-08-21 | Open-market sale (3,438 shares) |
| 2026-08-20 | Option exercise/conversion (21,065 shares) |
| 2026-08-21 | Open-market sale (11,308 shares) |
| 2026-08-20 | Option exercise/conversion (6,320 shares) |
| 2026-08-21 | Open-market sale (3,393 shares) |
| 2026-08-20 | Option exercise/conversion (6,404 shares) |
| 2026-08-20 | Option exercise/conversion (6,320 shares) |
| 2026-08-20 | Option exercise/conversion (21,065 shares) |
| 2026-08-20 | Grant/award (5,309 shares) |
| 2026-08-20 | Grant/award (5,280 shares) |
| 2026-08-20 | Grant/award (1,584 shares) |
| 2026-08-20 | Grant/award (31,856 shares) |
Keywords
insider transaction, Form 4, STX, Seagate Technology Holdings plc, bearish, William D Mosley
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