Seagate Technology Holdings plc (STX) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-07-22 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Seagate Technology Holdings plc (STX) CIK: 0001137789 --- Reporting Owner --- Name: Lee James CI CIK: 0001773423 Role: Officer (EVP & CLO) --- Non-Derivative Transactions --- [Transaction #1] Security: Ordinary Shares Date: 2026-07-22 | Code: M (Exercise of derivative) Shares: +1,237 | Price: $0.00 Shares Owned After: 1,561 | Ownership: D (Direct) [Transaction #2] Security: Ordinary Shares Date: 2026-07-23 | Code: S (Open market sale) Shares: -542.25 | Price: $905.01 Total Value: $490,740.97 Shares Owned After: 1,018.75 | Ownership: D (Direct) Footnotes: [F1] Represents sales made pursuant to Issuer mandated sell-to-cover solely to satisfy tax withholding obligations. --- Derivative Transactions --- [Transaction #1] Security: Restricted Share Unit Date: 2026-07-22 | Code: M (Exercise of derivative) Shares: -1,237 | Price: $0.00 Shares Owned After: 9,902 | Ownership: D (Direct) Footnotes: [F2] Each restricted share unit ("RSU") represents a contingent right to receive one Ordinary Share of the Issuer. [F3] Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan. Such RSUs vested as to one-quarter of the shares on July 22, 2025 and then in equal quarterly installments thereafter. [F3] Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan. Such RSUs vested as to one-quarter of the shares on July 22, 2025 and then in equal quarterly installments thereafter. --- Footnotes (Complete Index) --- F1: Represents sales made pursuant to Issuer mandated sell-to-cover solely to satisfy tax withholding obligations. F2: Each restricted share unit ("RSU") represents a contingent right to receive one Ordinary Share of the Issuer. F3: Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan. Such RSUs vested as to one-quarter of the shares on July 22, 2025 and then in equal quarterly installments thereafter. --- Signature --- /s/ /s/ Louis J. Thorson, Attorney-in-fact for James C. Lee (2026-07-24)