Seagate Technology — Director's Dealing 2025

Dec 2, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology Holdings plc (STX)
CIK: 0001137789
Period of Report: 2025-12-01

Reporting Person: MOSLEY WILLIAM D (Director, CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-01	Ordinary Shares	S	1093	$267.2688	Disposed	464575	Direct
2025-12-01	Ordinary Shares	S	407	$268.5757	Disposed	464168	Direct
2025-12-01	Ordinary Shares	S	650	$269.4313	Disposed	463518	Direct
2025-12-01	Ordinary Shares	S	5338	$270.2939	Disposed	458180	Direct
2025-12-01	Ordinary Shares	S	5718	$271.1884	Disposed	452462	Direct
2025-12-01	Ordinary Shares	S	5894	$272.244	Disposed	446568	Direct
2025-12-01	Ordinary Shares	S	800	$273.04	Disposed	445768	Direct
2025-12-01	Ordinary Shares	S	100	$274.89	Disposed	445668	Direct

Footnotes

F1: All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025.

F2: These Ordinary Shares were sold in multiple trades at prices ranging from $266.72 to $267.68. 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.

F3: These Ordinary Shares were sold in multiple trades at prices ranging from $267.76 to $268.73. 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.

F4: These Ordinary Shares were sold in multiple trades at prices ranging from $268.78 to $269.71. 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.

F5: These Ordinary Shares were sold in multiple trades at prices ranging from $269.78 to $270.74. 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.

F6: These Ordinary Shares were sold in multiple trades at prices ranging from $270.78 to $271.76. 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.

F7: These Ordinary Shares were sold in multiple trades at prices ranging from $271.78 to $272.74. 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.

F8: These Ordinary Shares were sold in multiple trades at prices ranging from $272.81 to $273.35. 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.