Gianluca Romano - 09 Mar 2026 Form 4 Insider Report for Seagate Technology Holdings plc (STX)

Role: EVP & CFO
Signature: /s/ Louis J. Thorson, Attorney-in-Fact for Gianluca Romano
Issuer symbol: STX
Transactions as of: 09 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 11 Mar 2026, 16:13:52 UTC
Previous filing: 23 Feb 2026
Next filing: 12 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Romano Gianluca	EVP & CFO	SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT	/s/ Louis J. Thorson, Attorney-in-Fact for Gianluca Romano	11 Mar 2026	0001764650

Transactions Table

Type	Sym	Class	Transaction	Shares	Change %	* Price $	Shares After	Date	Ownership
transaction	STX	Ordinary Shares	Options Exercise	+958	+1.5%	$0.000000^*	64,208	09 Mar 2026	Direct
transaction	STX	Ordinary Shares	Tax liability	-479	-0.75%	$374.33^*	63,729	09 Mar 2026	Direct
transaction	STX	Ordinary Shares	Options Exercise	+1,515	+2.4%	$0.000000^*	65,244	09 Mar 2026	Direct
transaction	STX	Ordinary Shares	Tax liability	-757	-1.2%	$374.33^*	64,487	09 Mar 2026	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	STX	Restricted Share Unit	Options Exercise		-958	-33%	$0.000000^*	1,918	09 Mar 2026	Ordinary Shares	958	$0.000000	Direct	F1
transaction	STX	Restricted Share Unit	Options Exercise		-1,515	-9.1%	$0.000000^*	15,158	09 Mar 2026	Ordinary Shares	1,515	$0.000000	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "2022 Plan"). Subject to the Reporting Person's continuous employment, such RSUs vested as to one-quarter of the shares on September 9, 2023 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.
F2	Consists of a grant of RSUs awarded to the Reporting Person under the 2022 Plan. Subject to the Reporting Person's continuous employment, one-quarter vested on September 9, 2025 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.

Content

Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "2022 Plan"). Subject to the Reporting Person's continuous employment, such RSUs vested as to one-quarter of the shares on September 9, 2023 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.

Consists of a grant of RSUs awarded to the Reporting Person under the 2022 Plan. Subject to the Reporting Person's continuous employment, one-quarter vested on September 9, 2025 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.