[Form 4] Seagate Technology Holdings plc Insider Trading Activity

Rhea-AI Filing Summary

Seagate Technology Holdings plc (STX) reporting shows Kian Fatt Chong, EVP Global Operations, received equity awards that vested in September 2025. On 09/11/2025 he was credited with 678 Ordinary Shares related to restricted share units and on 09/14/2025 2,016 Ordinary Shares vested after the Compensation Committee determined performance conditions were met. The filing lists 5,062 and 7,078 Ordinary Shares as the amounts beneficially owned following the 09/11 and 09/14 transactions, respectively. The Form 4 is signed by an attorney-in-fact on behalf of Chong on 09/15/2025. The awards were granted under the Seagate Technology plc 2022 Equity Incentive Plan.

Positive

• Performance conditions met for 2,016 of 2,150 Performance Share Units, which converted to Ordinary Shares on 09/14/2025
• Equity vesting increased direct holdings from 5,062 to 7,078 Ordinary Shares after the reported transactions
• Disclosure filed in accordance with Section 16 and signed by attorney-in-fact on 09/15/2025

Negative

• None.

Insights

Financial Analyst

TL;DR Insider received vested RSUs and PSUs, increasing direct share holdings by 2,694 shares in mid-September 2025.

The Form 4 documents routine equity vesting for an executive rather than open-market purchases or sales. The 678 restricted share units vested on 09/11/2025 and 2,016 performance-based restricted share units vested on 09/14/2025 after the Compensation Committee certified that performance conditions were met. Reported beneficial ownership totals changed to 5,062 and then 7,078 Ordinary Shares following each transaction. This is a standard compensation realization event under the 2022 Equity Incentive Plan and does not disclose any cash proceeds or market sales.

Corporate Governance Expert

TL;DR Filing reflects standard, committee-certified vesting of performance awards and proper Section 16 disclosure.

The disclosure identifies the reporting person as an executive officer (EVP Global Operations) and notes the Compensation Committee determination that 2,016 of 2,150 PSUs met performance conditions. The Form 4 is executed by an attorney-in-fact and includes explanations tying awards to the Seagate 2022 Equity Incentive Plan. The filing format and explanations align with expected governance and disclosure practices for equity compensation events.

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).

1. Name and Address of Reporting Person^*

Chong Kian Fatt

(Last) (First) (Middle)

SEAGATE TECHNOLOGY 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 Global Operations

3. Date of Earliest Transaction (Month/Day/Year)
09/11/2025

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	09/11/2025		M		678	A	$0	5,062	D
Ordinary Shares	09/14/2025		M		2,016	A	$0	7,078	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	09/11/2025		M			678	(1)	(1)	Ordinary Shares	678	$0	5,426	D
Performance-Based Restricted Share Units	$0	09/14/2025		A		2,016		(2)	(2)	Ordinary Shares	2,016	$0	2,016	D
Performance-Based Restricted Share Units	$0	09/14/2025		M			2,016	(2)	(2)	Ordinary Shares	2,016	$0	0	D

Explanation of Responses:

1. Consists of a grant of restricted share units awarded to the reporting person under the Seagate Technology plc 2022 Equity Incentive Plan. Subject to the Reporting Person's continuous employment, one-quarter vested starting on September 11, 2024 and then in equal quarterly installments over the following three years for a total vesting period of four years.

2. On September 14, 2025, the Compensation Committee of the Board of Directors of the Issuer determined that the performance conditions were met with respect to 2,016 of the 2,150 Performance Share Units granted on September 9, 2022. The 2,016 Ordinary Shares vested on September 14, 2025.

Remarks:

	/s/ Louis J. Thorson, Attorney-in-Fact for Kian Fatt Chong	09/15/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What shares did Kian Fatt Chong acquire according to the Form 4 for STX?

The Form 4 shows acquisition of 678 Ordinary Shares on 09/11/2025 (restricted share units) and 2,016 Ordinary Shares on 09/14/2025 (performance-based restricted share units).

Why did 2,016 Performance Share Units vest on 09/14/2025?

The filing states the Compensation Committee determined performance conditions were met for 2,016 of the 2,150 PSUs granted on 09/09/2022, causing vesting on 09/14/2025.

How many Ordinary Shares did Chong beneficially own after these transactions?

The Form 4 lists 5,062 Ordinary Shares following the 09/11/2025 transaction and 7,078 Ordinary Shares following the 09/14/2025 transaction.

Under which plan were the restricted share units awarded?

The awards were granted under the Seagate Technology plc 2022 Equity Incentive Plan as stated in the filing.

Who signed the Form 4 and when was it signed?

The Form 4 was signed by Louis J. Thorson, Attorney-in-Fact for Kian Fatt Chong on 09/15/2025.