Seagate Technology (STX)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-19 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: 2026-03-19 | Code: S (Open market sale) Shares: -24,584 | Price: $406.77 Total Value: $10,000,033.68 Shares Owned After: 375,591 | Ownership: D (Direct) Footnotes: [F1] The reported transaction reflects the contribution of issuer securities to an exchange fund in exchange for interest in the exchange fund. For purposes of Section 16, the transaction is being reported as a sale. The value of the securities contributed, and the corresponding interest received, was determined based on closing stock price of the issuer's common stock on March 18, 2026, with an aggregate value of approximately $10,000,000. [F1] The reported transaction reflects the contribution of issuer securities to an exchange fund in exchange for interest in the exchange fund. For purposes of Section 16, the transaction is being reported as a sale. The value of the securities contributed, and the corresponding interest received, was determined based on closing stock price of the issuer's common stock on March 18, 2026, with an aggregate value of approximately $10,000,000. --- Footnotes (Complete Index) --- F1: The reported transaction reflects the contribution of issuer securities to an exchange fund in exchange for interest in the exchange fund. For purposes of Section 16, the transaction is being reported as a sale. The value of the securities contributed, and the corresponding interest received, was determined based on closing stock price of the issuer's common stock on March 18, 2026, with an aggregate value of approximately $10,000,000. --- Signature --- /s/ /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley (2026-03-23)