Form 4 for STX Seagate Technology
Accepted 2025-10-03 00:00:00 ET · period of report 2025-10-01 · accession 0001137789-25-000243 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M | 2025-10-03 | 2025-10-01 | STX | MOSLEY WILLIAM D | CEO, Dir | S - Sale | $249.90 | -20.0K | 498.8K | -4% | -$5.00M |
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 | 2025-10-01 | S | D | 400 | $236.38 | 504,468 | D | — | — | (F4) These Ordinary Shares were sold in multiple trades at prices ranging from $236.09 to $236.73. 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. |
| 2 | Common | Ordinary Shares | 2025-10-01 | S | D | 800 | $248.30 | 497,968 | D | — | — | (F13) These Ordinary Shares were sold in multiple trades at prices ranging from $247.86 to $248.84. 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 | 2025-10-01 | S | D | 1,500 | $249.42 | 496,468 | D | — | — | (F14) These Ordinary Shares were sold in multiple trades at prices ranging from $248.91 to $249.82. 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. |
| 4 | Common | Ordinary Shares | 2025-10-01 | S | D | 200 | $235.24 | 504,868 | D | — | — | (F3) These Ordinary Shares were sold in multiple trades at prices ranging from $234.91 to $235.57. 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. |
| 5 | Common | Ordinary Shares | 2025-10-01 | S | D | 600 | $234.09 | 505,068 | 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. (F2) These Ordinary Shares were sold in multiple trades at prices ranging from $233.76 to $234.40. 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. |
| 6 | Common | Ordinary Shares | 2025-10-01 | S | D | 1,004 | $250.43 | 495,464 | D | — | — | (F15) These Ordinary Shares were sold in multiple trades at prices ranging from $249.94 to $250.89. 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. |
| 7 | Common | Ordinary Shares | 2025-10-01 | S | D | 700 | $252.03 | 494,764 | D | — | — | (F16) These Ordinary Shares were sold in multiple trades at prices ranging from $251.27 to $252.23. 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 | 2025-10-01 | S | D | 800 | $252.45 | 493,964 | D | — | — | (F17) These Ordinary Shares were sold in multiple trades at prices ranging from $252.34 to $252.67. 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 | 2025-10-01 | S | D | 1,900 | $253.76 | 492,064 | D | — | — | (F18) These Ordinary Shares were sold in multiple trades at prices ranging from $253.38 to $254.23. 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 | 2025-10-01 | S | D | 500 | $254.65 | 491,564 | D | — | — | (F19) These Ordinary Shares were sold in multiple trades at prices ranging from $254.40 to $254.95. 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 | 2025-10-01 | S | D | 1,011 | $255.69 | 490,553 | D | — | — | (F20) These Ordinary Shares were sold in multiple trades at prices ranging from $255.49 to $256.38. 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. |
| 12 | Common | Ordinary Shares | 2025-10-01 | S | D | 3,885 | $256.88 | 486,668 | D | — | — | (F21) These Ordinary Shares were sold in multiple trades at prices ranging from $256.50 to $257.36. 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 | 2025-10-01 | S | D | 1,000 | $257.83 | 485,668 | D | — | — | (F22) These Ordinary Shares were sold in multiple trades at prices ranging from $257.56 to $258.15. 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 | 2025-10-01 | S | D | 500 | $237.83 | 503,968 | D | — | — | (F5) These Ordinary Shares were sold in multiple trades at prices ranging from $237.45 to $238.41. 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 | 2025-10-01 | S | D | 300 | $238.80 | 503,668 | D | — | — | (F6) These Ordinary Shares were sold in multiple trades at prices ranging from $238.67 to $238.91. 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 | 2025-10-01 | S | D | 500 | $240.02 | 503,168 | D | — | — | (F7) These Ordinary Shares were sold in multiple trades at prices ranging from $239.73 to $240.24. 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 | 2025-10-01 | S | D | 400 | $241.50 | 502,768 | D | — | — | (F8) These Ordinary Shares were sold in multiple trades at prices ranging from $241.08 to $241.70. 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 | 2025-10-01 | S | D | 500 | $243.43 | 502,268 | D | — | — | (F9) These Ordinary Shares were sold in multiple trades at prices ranging from $242.99 to $243.88. 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 | 2025-10-01 | S | D | 1,400 | $245.24 | 500,868 | D | — | — | (F10) These Ordinary Shares were sold in multiple trades at prices ranging from $244.60 to $245.59. 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 | 2025-10-01 | S | D | 1,400 | $245.94 | 499,468 | D | — | — | (F11) These Ordinary Shares were sold in multiple trades at prices ranging from $245.60 to $246.40. 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. |
| 21 | Common | Ordinary Shares | 2025-10-01 | S | D | 700 | $247.20 | 498,768 | D | — | — | (F12) These Ordinary Shares were sold in multiple trades at prices ranging from $246.76 to $247.66. 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. |