| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Romano Gianluca | EVP & CFO | SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT | /s/ Louis J. Thorson, Attorney-in-Fact for Gianluca Romano | 14 Nov 2025 | 0001764650 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STX | Ordinary Shares | Sale | -$78K | -300 | -0.53% | $260.03 | 56K | 13 Nov 2025 | Direct | F1, F2 |
| transaction | STX | Ordinary Shares | Sale | -$291K | -1.11K | -1.98% | $261.79 | 54.9K | 13 Nov 2025 | Direct | F3 |
| transaction | STX | Ordinary Shares | Sale | -$397K | -1.51K | -2.76% | $262.58 | 53.4K | 13 Nov 2025 | Direct | F4 |
| transaction | STX | Ordinary Shares | Sale | -$185K | -700 | -1.31% | $263.59 | 52.7K | 13 Nov 2025 | Direct | F5 |
| transaction | STX | Ordinary Shares | Sale | -$106K | -400 | -0.76% | $265.40 | 52.3K | 13 Nov 2025 | Direct | F6 |
| transaction | STX | Ordinary Shares | Sale | -$80K | -300 | -0.57% | $266.68 | 52K | 13 Nov 2025 | Direct | F7 |
| transaction | STX | Ordinary Shares | Sale | -$161K | -600 | -1.15% | $267.58 | 51.4K | 13 Nov 2025 | Direct | F8 |
| transaction | STX | Ordinary Shares | Sale | -$129K | -479 | -0.93% | $269.10 | 50.9K | 13 Nov 2025 | Direct | F9 |
| transaction | STX | Ordinary Shares | Sale | -$189K | -700 | -1.38% | $270.53 | 50.2K | 13 Nov 2025 | Direct | F10 |
| transaction | STX | Ordinary Shares | Sale | -$109K | -400 | -0.8% | $271.36 | 49.8K | 13 Nov 2025 | Direct | F11 |
| transaction | STX | Ordinary Shares | Sale | -$191K | -700 | -1.41% | $272.71 | 49.1K | 13 Nov 2025 | Direct | F12 |
| transaction | STX | Ordinary Shares | Sale | -$192K | -700 | -1.43% | $273.79 | 48.4K | 13 Nov 2025 | Direct | F13 |
| transaction | STX | Ordinary Shares | Sale | -$27.6K | -100 | -0.21% | $275.69 | 48.3K | 13 Nov 2025 | Direct |
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 in multiple trades at prices ranging from $259.73 to $260.29. 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. |
| F2 | All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025. |
| F3 | These Ordinary Shares were sold in multiple trades at prices ranging from $261.15 to $262.13. 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 $262.15 to $263.08. 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 $263.26 to $263.90. 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 $265.07 to $266.03. 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 $266.22 to $266.91. 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. |
| F8 | These Ordinary Shares were sold in multiple trades at prices ranging from $267.25 to $268.09. 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. |
| F9 | These Ordinary Shares were sold in multiple trades at prices ranging from $268.71 to $269.62. 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. |
| F10 | These Ordinary Shares were sold in multiple trades at prices ranging from $270.05 to $270.94. 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 $271.11 to $271.98. 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 $272.21 to $273.16. 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. |
| F13 | These Ordinary Shares were sold in multiple trades at prices ranging from $273.42 to $274.37. 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. |