| 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 | 06 Jan 2026 | 0001388390 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STX | Ordinary Shares | Sale | $224,875 | -800 | -0.18% | $281.09 | 449,095 | 02 Jan 2026 | Direct | F1, F2 |
| transaction | STX | Ordinary Shares | Sale | $564,173 | -2,000 | -0.45% | $282.09 | 447,095 | 02 Jan 2026 | Direct | F3 |
| transaction | STX | Ordinary Shares | Sale | $453,154 | -1,600 | -0.36% | $283.22 | 445,495 | 02 Jan 2026 | Direct | F4 |
| transaction | STX | Ordinary Shares | Sale | $511,352 | -1,800 | -0.4% | $284.08 | 443,695 | 02 Jan 2026 | Direct | F5 |
| transaction | STX | Ordinary Shares | Sale | $771,550 | -2,705 | -0.61% | $285.23 | 440,990 | 02 Jan 2026 | Direct | F6 |
| transaction | STX | Ordinary Shares | Sale | $1,026,755 | -3,586 | -0.81% | $286.32 | 437,404 | 02 Jan 2026 | Direct | F7 |
| transaction | STX | Ordinary Shares | Sale | $1,438,955 | -5,009 | -1.1% | $287.27 | 432,395 | 02 Jan 2026 | Direct | F8 |
| transaction | STX | Ordinary Shares | Sale | $604,821 | -2,100 | -0.49% | $288.01 | 430,295 | 02 Jan 2026 | Direct | F9 |
| transaction | STX | Ordinary Shares | Sale | $115,611 | -400 | -0.09% | $289.03 | 429,895 | 02 Jan 2026 | Direct | F10 |
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 | These Ordinary Shares were sold under a Rule 10b5-1 trading plan adopted by the Reporting Person February 20, 2025. |
| F2 | These Ordinary Shares were sold in multiple trades at prices ranging from $280.66 to $281.52. 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 $281.66 to $282.62. 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 $282.69 to $283.59. 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. |
| F5 | These Ordinary Shares were sold in multiple trades at prices ranging from $283.69 to $284.53. 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. |
| F6 | These Ordinary Shares were sold in multiple trades at prices ranging from $284.70 to $285.68. 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 $285.71 to $286.69. 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. |
| F8 | These Ordinary Shares were sold in multiple trades at prices ranging from $286.71 to $287.67. 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. |
| F9 | These Ordinary Shares were sold in multiple trades at prices ranging from $287.72 to $288.66. 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. |
| F10 | These Ordinary Shares were sold in multiple trades at prices ranging from $288.74 to $289.25. 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. |