| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Morris John Christopher | EVP & CTO | SEAGATE TECHNOLOGY PLC, 47488 KATO ROAD, FREMONT | /s/ Louis J. Thorson, Attorney-in-Fact for John C. Morris | 23 Feb 2026 | 0001988271 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STX | Ordinary Shares | Options Exercise | $0 | +4,427 | +31% | $0.000000 | 18,838 | 20 Feb 2026 | Direct | F1 |
| transaction | STX | Ordinary Shares | Tax liability | $835,376 | -2,032 | -11% | $411.11 | 16,806 | 20 Feb 2026 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STX | Performance-Based Restricted Share Units | Options Exercise | $0 | -4,427 | -100% | $0.000000 | 0 | 20 Feb 2026 | Ordinary Shares | 4,427 | $0.000000 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | Includes 161 Ordinary Shares purchased by Reporting Person on January 31, 2026 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. |
| F2 | On January 24, 2026 the Compensation and People Committee of the Board of Directors of the Issuer determined that the performance conditions were met with respect to the 4,427 Performance Share Units granted on February 20, 2024. The 4,427 Ordinary Shares vested on February 20, 2026. |