Seagate Technology — Director's Dealing 2025

Nov 14, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology Holdings plc (STX)
CIK: 0001137789
Period of Report: 2025-11-12

Reporting Person: Romano Gianluca (EVP & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-11-12	Ordinary Shares	M	5364	$87.34	Acquired	63149	Direct
2025-11-12	Ordinary Shares	M	10220	$68.83	Acquired	73369	Direct
2025-11-12	Ordinary Shares	M	18080	$64.31	Acquired	91449	Direct
2025-11-12	Ordinary Shares	M	18865	$101.34	Acquired	110314	Direct
2025-11-12	Ordinary Shares	S	2549	$279.6896	Disposed	107765	Direct
2025-11-12	Ordinary Shares	S	5285	$280.6685	Disposed	102480	Direct
2025-11-12	Ordinary Shares	S	5712	$281.4894	Disposed	96768	Direct
2025-11-12	Ordinary Shares	S	4400	$282.5546	Disposed	92368	Direct
2025-11-12	Ordinary Shares	S	6836	$283.4584	Disposed	85532	Direct
2025-11-12	Ordinary Shares	S	5216	$284.5497	Disposed	80316	Direct
2025-11-12	Ordinary Shares	S	4294	$285.5412	Disposed	76022	Direct
2025-11-12	Ordinary Shares	S	3702	$286.5551	Disposed	72320	Direct
2025-11-12	Ordinary Shares	S	4893	$287.7543	Disposed	67427	Direct
2025-11-12	Ordinary Shares	S	3092	$288.6846	Disposed	64335	Direct
2025-11-12	Ordinary Shares	S	2703	$289.8179	Disposed	61632	Direct
2025-11-12	Ordinary Shares	S	1300	$290.681	Disposed	60332	Direct
2025-11-12	Ordinary Shares	S	1300	$291.6969	Disposed	59032	Direct
2025-11-12	Ordinary Shares	S	100	$292.64	Disposed	58932	Direct
2025-11-12	Ordinary Shares	S	700	$294.004	Disposed	58232	Direct
2025-11-12	Ordinary Shares	S	1500	$294.8987	Disposed	56732	Direct
2025-11-12	Ordinary Shares	S	439	$296.0947	Disposed	56293	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-11-12	NQ Options	$87.34	M	5364	Disposed	2028-09-09	Ordinary Shares (5364)	Direct
2025-11-12	NQ Options	$68.83	M	10220	Disposed	2029-09-09	Ordinary Shares (10220)	Direct
2025-11-12	NQ Options	$64.31	M	18080	Disposed	2030-09-11	Ordinary Shares (18080)	Direct
2025-11-12	NQ Options	$101.34	M	18865	Disposed	2031-09-09	Ordinary Shares (18865)	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 August 1, 2025.

F2: These Ordinary Shares were sold in multiple trades at prices ranging from $279.06 to $280.04. 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 $280.06 to $281.05. 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 $281.06 to $282.04. 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 $282.07 to $283.01. 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 $283.07 to $284.06. 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 $284.07 to $285.06. 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 $285.07 to $286.06. 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.

F9: These Ordinary Shares were sold in multiple trades at prices ranging from $286.10 to $287.08. 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.

F10: These Ordinary Shares were sold in multiple trades at prices ranging from $287.15 to $288.10. 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.

F11: These Ordinary Shares were sold in multiple trades at prices ranging from $288.20 to $289.17. 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.

F12: These Ordinary Shares were sold in multiple trades at prices ranging from $289.20 to $290.14. 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.

F13: These Ordinary Shares were sold in multiple trades at prices ranging from $290.33 to $291.21. 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.

F14: These Ordinary Shares were sold in multiple trades at prices ranging from $291.40 to $292.24. 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.

F15: These Ordinary Shares were sold in multiple trades at prices ranging from $293.64 to $294.59. 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.

F16: These Ordinary Shares were sold in multiple trades at prices ranging from $294.66 to $295.64. 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.

F17: These Ordinary Shares were sold in multiple trades at prices ranging from $295.81 to $296.34. 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.

F18: 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. Subject to the Reporting Person's continuous employment, one-quarter of the options vested on September 9, 2022 and the remaining options vested in equal monthly installments over the 36 months following September 9, 2022.

F19: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, 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.

F20: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, 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.

F21: Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, 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.