[Form 4] Seagate Technology Holdings PLC Insider Trading Activity

Rhea-AI Filing Summary

Teh Ban Seng, EVP & Chief Commercial Officer of Seagate Technology Holdings plc (STX), reported multiple restricted share unit vestings on September 9, 2025 that converted to ordinary shares and a subsequent sale on September 10, 2025. The Form 4 shows vesting-related acquisitions of 1,408, 599, 2,652, and 1,165 ordinary shares from RSUs and a disposal of 6,781 ordinary shares sold at a weighted-average price of $191.53. The filing lists the reporter's resulting beneficial ownership at various line items, with the largest post-transaction total shown as 11,971 shares in one line and other totals shown per transaction line.

Positive

• Multiple RSU grants vested on September 9, 2025 showing compensation plan execution
• Full disclosure of weighted-average sale price ($191.53) for the sold shares and undertaking to provide trade details upon request

Negative

• Insider sale of 6,781 shares on September 10, 2025 which reduced direct holdings reported
• No contextual explanation in the filing for the sale beyond price disclosure (e.g., tax or personal reasons not stated)

Insights

Securities Analyst

TL;DR Routine RSU vestings and an insider sale; transaction size is modest relative to public float and appears administrative.

The filing documents scheduled vesting of multiple RSU grants on September 9, 2025 and a sale of 6,781 ordinary shares on September 10, 2025 at a weighted-average price of $191.53. These actions are reported under Form 4 as required and include post-transaction beneficial ownership amounts by line. There is no disclosure here of additional transfers, hedging arrangements, or changes in employment status beyond the vesting conditions referenced in the explanations.

Corporate Governance Expert

TL;DR Disclosure aligns with Section 16 requirements; transactions appear to reflect scheduled compensation vesting.

The explanations reference standard RSU vesting schedules under the company equity plan, including one grant that vested 100% on the first anniversary and others that vest over four years. The Form 4 is signed by an attorney-in-fact and provides a weighted-average sale price for the disclosed sale. No governance red flags, amendments, or corrective disclosures are present in the filing text provided.

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^*

Teh Ban Seng

(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 & Chief Commercial Officer

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		1,408	A	$0	7,555	D
Ordinary Shares	09/09/2025		M		599	A	$0	8,154	D
Ordinary Shares	09/09/2025		M		2,652	A	$0	10,806	D
Ordinary Shares	09/09/2025		M		1,165	A	$0	11,971	D
Ordinary Shares	09/10/2025		S		6,781	D	$191.53(1)	5,190	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			1,408	(2)	(2)	Ordinary Shares	1,408	$0	0	D
Restricted Share Unit	$0	09/09/2025		M			599	(3)	(3)	Ordinary Shares	599	$0	2,397	D
Restricted Share Unit	$0	09/09/2025		M			2,652	(4)	(4)	Ordinary Shares	2,652	$0	7,958	D
Restricted Share Unit	$0	09/09/2025		M			1,165	(5)	(5)	Ordinary Shares	1,165	$0	0	D

Explanation of Responses:

1. These Ordinary Shares were sold in multiple trades at prices ranging from $191.53 to $191.54. 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.

2. Consists of a grant of RSUs awarded to the Reporting Person under the 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 Ban Seng Teh	09/11/2025
	** 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).
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