Seagate Technology (STX)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-02-20 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Seagate Technology Holdings plc (STX) CIK: 0001137789 --- Reporting Owner --- Name: MOSLEY WILLIAM D CIK: 0001388390 Role: Director, Officer (CEO) --- Non-Derivative Transactions --- [Transaction #1] Security: Ordinary Shares Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +11,807 | Price: $0.00 Shares Owned After: 421,863 | Ownership: D (Direct) [Transaction #2] Security: Ordinary Shares Date: 2026-02-20 | Code: F (Payment of exercise/tax) Shares: -5,966 | Price: $411.11 Total Value: $2,452,682.26 Shares Owned After: 415,897 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Performance-Based Restricted Share Units Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -11,807 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F1] 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 11,807 Performance Share Units granted on February 20, 2024. The 11,807 Ordinary Shares vested on February 20, 2026. [F1] 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 11,807 Performance Share Units granted on February 20, 2024. The 11,807 Ordinary Shares vested on February 20, 2026. --- Footnotes (Complete Index) --- F1: 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 11,807 Performance Share Units granted on February 20, 2024. The 11,807 Ordinary Shares vested on February 20, 2026. --- Signature --- /s/ /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley (2026-02-23)