| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MOSLEY WILLIAM D | Chief Executive Officer, Director | SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT | /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley | 04 Aug 2025 | 0001388390 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STX | Ordinary Shares | Sale | $375,129 | -2,474 | -0.5% | $151.63 | 496,438 | 01 Aug 2025 | Direct | F1, F2, F3 |
| transaction | STX | Ordinary Shares | Sale | $388,420 | -2,544 | -0.51% | $152.68 | 493,894 | 01 Aug 2025 | Direct | F4 |
| transaction | STX | Ordinary Shares | Sale | $1,277,167 | -8,311 | -1.7% | $153.67 | 485,583 | 01 Aug 2025 | Direct | F5 |
| transaction | STX | Ordinary Shares | Sale | $746,276 | -4,825 | -0.99% | $154.67 | 480,758 | 01 Aug 2025 | Direct | F6 |
| transaction | STX | Ordinary Shares | Sale | $209,759 | -1,346 | -0.28% | $155.84 | 479,412 | 01 Aug 2025 | Direct | F7 |
| transaction | STX | Ordinary Shares | Sale | $78,212 | -500 | -0.1% | $156.42 | 478,912 | 01 Aug 2025 | Direct | F8 |
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 $151.13 to $152.09. 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 | Includes 202 Ordinary Shares purchased by Reporting Person on July 31, 2025 under the Issuer's Employee Stock Purchase Plan. Such acquisition is exempt from reporting pursuant to Rule 16b-3 under the Securities Exchange Act of 1934. |
| F4 | These Ordinary Shares were sold in multiple trades at prices ranging from $152.15 to $153.11. 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 $153.17 to $154.16. 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 $154.17 to $155.07. 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 $155.22 to $156.19. 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. |
| F8 | These Ordinary Shares were sold in multiple trades at prices ranging from $156.22 to $156.54. 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. |