| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MOSLEY WILLIAM D | CEO, Director | SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT | /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley | 03 Oct 2025 | 0001388390 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STX | Ordinary Shares | Sale | -$140K | -600 | -0.12% | $234.09 | 505K | 01 Oct 2025 | Direct | F1, F2 |
| transaction | STX | Ordinary Shares | Sale | -$47K | -200 | -0.04% | $235.24 | 505K | 01 Oct 2025 | Direct | F3 |
| transaction | STX | Ordinary Shares | Sale | -$94.6K | -400 | -0.08% | $236.38 | 504K | 01 Oct 2025 | Direct | F4 |
| transaction | STX | Ordinary Shares | Sale | -$119K | -500 | -0.1% | $237.83 | 504K | 01 Oct 2025 | Direct | F5 |
| transaction | STX | Ordinary Shares | Sale | -$71.6K | -300 | -0.06% | $238.80 | 504K | 01 Oct 2025 | Direct | F6 |
| transaction | STX | Ordinary Shares | Sale | -$120K | -500 | -0.1% | $240.02 | 503K | 01 Oct 2025 | Direct | F7 |
| transaction | STX | Ordinary Shares | Sale | -$96.6K | -400 | -0.08% | $241.50 | 503K | 01 Oct 2025 | Direct | F8 |
| transaction | STX | Ordinary Shares | Sale | -$122K | -500 | -0.1% | $243.43 | 502K | 01 Oct 2025 | Direct | F9 |
| transaction | STX | Ordinary Shares | Sale | -$343K | -1.4K | -0.28% | $245.24 | 501K | 01 Oct 2025 | Direct | F10 |
| transaction | STX | Ordinary Shares | Sale | -$344K | -1.4K | -0.28% | $245.94 | 499K | 01 Oct 2025 | Direct | F11 |
| transaction | STX | Ordinary Shares | Sale | -$173K | -700 | -0.14% | $247.20 | 499K | 01 Oct 2025 | Direct | F12 |
| transaction | STX | Ordinary Shares | Sale | -$199K | -800 | -0.16% | $248.30 | 498K | 01 Oct 2025 | Direct | F13 |
| transaction | STX | Ordinary Shares | Sale | -$374K | -1.5K | -0.3% | $249.42 | 496K | 01 Oct 2025 | Direct | F14 |
| transaction | STX | Ordinary Shares | Sale | -$251K | -1K | -0.2% | $250.43 | 495K | 01 Oct 2025 | Direct | F15 |
| transaction | STX | Ordinary Shares | Sale | -$176K | -700 | -0.14% | $252.03 | 495K | 01 Oct 2025 | Direct | F16 |
| transaction | STX | Ordinary Shares | Sale | -$202K | -800 | -0.16% | $252.45 | 494K | 01 Oct 2025 | Direct | F17 |
| transaction | STX | Ordinary Shares | Sale | -$482K | -1.9K | -0.38% | $253.76 | 492K | 01 Oct 2025 | Direct | F18 |
| transaction | STX | Ordinary Shares | Sale | -$127K | -500 | -0.1% | $254.65 | 492K | 01 Oct 2025 | Direct | F19 |
| transaction | STX | Ordinary Shares | Sale | -$259K | -1.01K | -0.21% | $255.69 | 491K | 01 Oct 2025 | Direct | F20 |
| transaction | STX | Ordinary Shares | Sale | -$998K | -3.89K | -0.79% | $256.88 | 487K | 01 Oct 2025 | Direct | F21 |
| transaction | STX | Ordinary Shares | Sale | -$258K | -1K | -0.21% | $257.83 | 486K | 01 Oct 2025 | Direct | F22 |
Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
| Id | Content |
|---|---|
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |