[Form 4] Seagate Technology Holdings PLC Insider Trading Activity

Rhea-AI Filing Summary

Gianluca Romano, EVP & CFO of Seagate Technology Holdings plc, reported multiple equity transactions on 09/09/2025. The filing shows a combination of restricted share units (RSUs) that vested and ordinary shares sold. Total RSU awards vested and converted into 13,072 ordinary shares via several vesting events and an additional 114 shares were purchased under the company ESPP on 07/31/2025 (exempt under Rule 16b-3). On the same date Romano disposed of 6,608 ordinary shares at $191.59 per share. Following the reported transactions, Romano beneficially owned 45,971 ordinary shares, held directly.

Insights

Securities Analyst

TL;DR: Insider reported routine RSU vesting plus share sales; holdings remain material but transactions appear standard compensation-related activity.

The Form 4 details multiple RSU vesting events that resulted in 13,072 ordinary shares being delivered and an ESPP purchase of 114 shares exempt under Rule 16b-3. Offsetting those vested/acquired shares, the reporting person sold 6,608 shares at $191.59 each on 09/09/2025. The net effect increased reported activity but leaves Romano with 45,971 directly held shares. These patterns align with scheduled vesting and opportunistic selling rather than an unusual trading pattern within the filing itself.

Corporate Governance Expert

TL;DR: Transactions reflect standard executive compensation mechanics and disclosed sales; filings comply with Section 16 reporting norms.

The disclosure distinguishes between RSU vesting (multiple grants with staggered vesting schedules) and open-market disposals at a specified per-share price. The filing includes the required explanatory notes describing vesting schedules and ESPP purchase treatment. No amendments, undisclosed related-party transfers, or indirect ownership flags are present in the reported lines.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Romano Gianluca

(Last) (First) (Middle)

SEAGATE TECHNOLOGY HOLDINGS PLC

47488 KATO ROAD

(Street)

FREMONT CA 94538

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Seagate Technology Holdings plc [ STX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & CFO

3. Date of Earliest Transaction (Month/Day/Year)
09/09/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	09/09/2025		M		3,017	A	$0	42,524(1)	D
Ordinary Shares	09/09/2025		F		1,525	D	$191.59	40,999	D
Ordinary Shares	09/09/2025		M		958	A	$0	41,957	D
Ordinary Shares	09/09/2025		F		485	D	$191.59	41,472	D
Ordinary Shares	09/09/2025		M		6,062	A	$0	47,534	D
Ordinary Shares	09/09/2025		F		3,064	D	$191.59	44,470	D
Ordinary Shares	09/09/2025		M		3,035	A	$0	47,505	D
Ordinary Shares	09/09/2025		F		1,534	D	$191.59	45,971	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Share Unit	$0	09/09/2025		M			3,017	(2)	(2)	Ordinary Shares	3,017	$0	0	D
Restricted Share Unit	$0	09/09/2025		M			958	(3)	(3)	Ordinary Shares	958	$0	3,834	D
Restricted Share Unit	$0	09/09/2025		M			6,062	(4)	(4)	Ordinary Shares	6,062	$0	18,188	D
Restricted Share Unit	$0	09/09/2025		M			3,035	(5)	(5)	Ordinary Shares	3,035	$0	0	D

Explanation of Responses:

1. Includes 114 Ordinary Shares purchased by Reporting Person on July 31, 2025 under the Issuer's Employee Stock Purchase Plan. Such acquisition is exempt from reporting pursuant to Rule 16b-3 under the Securities Exchange Act of 1934.

2. Consists of a grant of RSUs awarded to the Reporting Person under Seagate Technology plc Equity Incentive Plan (the "Plan"). Subject to the Reporting Person's continuous employment, one-quarter of the shares vested on September 9, 2022 and each one-year anniversary thereafter for a total vesting period of four years.

3. Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, one-quarter of the shares vested 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.

4. Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, one-quarter of the shares 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.

5. Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Such RSUs vested 100% on September 9, 2025, the first anniversary of the grant.

Remarks:

	/s/ Louis J. Thorson, Attorney-in-Fact for Gianluca Romano	09/11/2025
	** Signature of Reporting Person	Date
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