Form 4 for STX Seagate Technology
Accepted 2026-04-02 16:53:43 ET · period of report 2026-04-01 · accession 0001137789-26-000076 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MT | 2026-04-02 16:53 | 2026-04-01 | STX | MOSLEY WILLIAM D | CEO, Dir | S - Sale | $420.73 | -20.0K | 355.6K | -5% | -$8.41M |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Ordinary Shares | 2026-04-01 | S | D | 100 | $399.05 | 375,491 | D | — | — | (F1) All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025. |
| 2 | Common | Ordinary Shares | 2026-04-01 | S | D | 200 | $400.33 | 375,291 | D | — | — | (F2) These Ordinary Shares were sold in multiple trades at prices ranging from $400.14 to $400.53. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 3 | Common | Ordinary Shares | 2026-04-01 | S | D | 100 | $404.06 | 375,191 | D | — | — | |
| 4 | Common | Ordinary Shares | 2026-04-01 | S | D | 100 | $407.48 | 375,091 | D | — | — | |
| 5 | Common | Ordinary Shares | 2026-04-01 | S | D | 200 | $409.18 | 374,891 | D | — | — | (F3) These Ordinary Shares were sold in multiple trades at prices ranging from $409.03 to $409.33. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 6 | Common | Ordinary Shares | 2026-04-01 | S | D | 100 | $410.83 | 374,791 | D | — | — | |
| 7 | Common | Ordinary Shares | 2026-04-01 | S | D | 300 | $412.28 | 374,491 | D | — | — | (F4) These Ordinary Shares were sold in multiple trades at prices ranging from $412.05 to $412.40. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 8 | Common | Ordinary Shares | 2026-04-01 | S | D | 300 | $413.97 | 374,191 | D | — | — | (F5) These Ordinary Shares were sold in multiple trades at prices ranging from $413.57 to $414.29. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 9 | Common | Ordinary Shares | 2026-04-01 | S | D | 800 | $415.23 | 373,391 | D | — | — | (F6) These Ordinary Shares were sold in multiple trades at prices ranging from $414.85 to $415.69. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 10 | Common | Ordinary Shares | 2026-04-01 | S | D | 1,100 | $416.56 | 372,291 | D | — | — | (F7) These Ordinary Shares were sold in multiple trades at prices ranging from $416.18 to $417.14. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 11 | Common | Ordinary Shares | 2026-04-01 | S | D | 808 | $417.45 | 371,483 | D | — | — | (F8) These Ordinary Shares were sold in multiple trades at prices ranging from $417.22 to $418.18. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 12 | Common | Ordinary Shares | 2026-04-01 | S | D | 1,092 | $418.79 | 370,391 | D | — | — | (F9) These Ordinary Shares were sold in multiple trades at prices ranging from $418.22 to $419.10. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 13 | Common | Ordinary Shares | 2026-04-01 | S | D | 1,500 | $419.94 | 368,891 | D | — | — | (F10) These Ordinary Shares were sold in multiple trades at prices ranging from $419.33 to $420.31. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 14 | Common | Ordinary Shares | 2026-04-01 | S | D | 2,900 | $420.77 | 365,991 | D | — | — | (F11) These Ordinary Shares were sold in multiple trades at prices ranging from $420.35 to $421.30. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 15 | Common | Ordinary Shares | 2026-04-01 | S | D | 2,887 | $421.84 | 363,104 | D | — | — | (F12) These Ordinary Shares were sold in multiple trades at prices ranging from $421.37 to $422.35. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 16 | Common | Ordinary Shares | 2026-04-01 | S | D | 2,444 | $422.93 | 360,660 | D | — | — | (F13) These Ordinary Shares were sold in multiple trades at prices ranging from $422.41 to $423.37. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 17 | Common | Ordinary Shares | 2026-04-01 | S | D | 1,469 | $423.98 | 359,191 | D | — | — | (F14) These Ordinary Shares were sold in multiple trades at prices ranging from $423.41 to $424.38. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 18 | Common | Ordinary Shares | 2026-04-01 | S | D | 1,500 | $424.92 | 357,691 | D | — | — | (F15) These Ordinary Shares were sold in multiple trades at prices ranging from $424.46 to $425.44. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 19 | Common | Ordinary Shares | 2026-04-01 | S | D | 1,000 | $425.94 | 356,691 | D | — | — | (F16) These Ordinary Shares were sold in multiple trades at prices ranging from $425.46 to $426.19. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 20 | Common | Ordinary Shares | 2026-04-01 | S | D | 800 | $426.93 | 355,891 | D | — | — | (F17) These Ordinary Shares were sold in multiple trades at prices ranging from $426.47 to $427.45. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 21 | Common | Ordinary Shares | 2026-04-01 | S | D | 300 | $427.97 | 355,591 | D | — | — | (F18) These Ordinary Shares were sold in multiple trades at prices ranging from $427.63 to $428.14. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. |