Seagate Technology (STX)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-13 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Seagate Technology Holdings plc (STX) CIK: 0001137789 --- Reporting Owner --- Name: Teh Ban Seng CIK: 0001801425 Role: Officer (EVP & Chief Commercial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Ordinary Shares Date: 2026-08-13 | Code: M (Exercise of derivative) Shares: +1,597 | Price: $68.83 Total Value: $109,921.51 Shares Owned After: 5,887 | Ownership: D (Direct) [Transaction #2] Security: Ordinary Shares Date: 2026-08-13 | Code: M (Exercise of derivative) Shares: +2,636 | Price: $64.31 Total Value: $169,521.16 Shares Owned After: 8,523 | Ownership: D (Direct) [Transaction #3] Security: Ordinary Shares Date: 2026-08-13 | Code: M (Exercise of derivative) Shares: +1,769 | Price: $101.34 Total Value: $179,270.46 Shares Owned After: 10,292 | Ownership: D (Direct) [Transaction #4] Security: Ordinary Shares Date: 2026-08-13 | Code: S (Open market sale) Shares: -6,002 | Price: $920.14 Total Value: $5,522,680.28 Shares Owned After: 4,290 | Ownership: D (Direct) [Transaction #5] Security: Ordinary Shares Date: 2026-08-13 | Code: S (Open market sale) Shares: -1,359 | Price: $923.73 Total Value: $1,255,347.85 Shares Owned After: 2,931 | Ownership: D (Direct) Footnotes: [F1] These Ordinary Shares were sold in multiple trades at prices ranging from $923.43 to $923.77. 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. --- Derivative Transactions --- [Transaction #1] Security: NQ Options Date: 2026-08-13 | Code: M (Exercise of derivative) Shares: -1,597 | Price: $0.00 Exercisable: N/A | Expires: 2029-09-09 Shares Owned After: 533 | Ownership: D (Direct) Footnotes: [F2] Options granted to the Reporting Person under the Seagate Technology plc 2022 Equity Incentive Plan (the "2022 Plan") are subject to a four-year vesting schedule. One-quarter of the options vested on September 9, 2023 and the remaining options vest in equal monthly installments over the 36 months following September 9, 2023. [Transaction #2] Security: NQ Options Date: 2026-08-13 | Code: M (Exercise of derivative) Shares: -2,636 | Price: $0.00 Exercisable: N/A | Expires: 2030-09-11 Shares Owned After: 11,424 | Ownership: D (Direct) Footnotes: [F3] Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One-quarter of the options vested on September 11, 2024 and the remaining options vest in equal monthly installments over the 36 months following September 11, 2024. [Transaction #3] Security: NQ Options Date: 2026-08-13 | Code: M (Exercise of derivative) Shares: -1,769 | Price: $0.00 Exercisable: N/A | Expires: 2031-09-09 Shares Owned After: 14,740 | Ownership: D (Direct) Footnotes: [F4] Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One-quarter of the options vested on September 9, 2025 and the remaining options vest in equal monthly installments over the 36 months following September 9, 2025. --- Footnotes (Complete Index) --- F1: These Ordinary Shares were sold in multiple trades at prices ranging from $923.43 to $923.77. 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: Options granted to the Reporting Person under the Seagate Technology plc 2022 Equity Incentive Plan (the "2022 Plan") are subject to a four-year vesting schedule. One-quarter of the options vested on September 9, 2023 and the remaining options vest in equal monthly installments over the 36 months following September 9, 2023. F3: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One-quarter of the options vested on September 11, 2024 and the remaining options vest in equal monthly installments over the 36 months following September 11, 2024. F4: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One-quarter of the options vested on September 9, 2025 and the remaining options vest in equal monthly installments over the 36 months following September 9, 2025. --- Signature --- /s/ /s/ Louis J. Thorson, Attorney-in-Fact for Ban Seng Teh (2026-08-14)