STX Form 4: 2,693 RSUs convert; tax withholding at $225.4 per share

Rhea-AI Filing Summary

Seagate Technology Holdings (STX) director Stephanie Tilenius reported a routine equity transaction. On 10/19/2025, 2,693 restricted share units converted to ordinary shares at $0 (code M). To cover taxes, 647 shares were withheld at $225.4 per share (code F). Following these transactions, she directly holds 14,290 ordinary shares.

The RSUs were issued under the 2022 Equity Incentive Plan and each RSU corresponds to one ordinary share, with release tied to continued service and the earlier of one year from grant or the next annual general meeting following the fiscal year ending June 27, 2025.

Insider Trade Summary

Net Buyer: 2,046 shares

Net Buy 3 txns

Insider Tilenius Stephanie

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Share Unit	2,693	$0.00	$0.00
Exercise	Ordinary Shares	2,693	$0.00	$0.00
Exercise Price or Tax Liability	Ordinary Shares	647	$225.40	$146K

Holdings After Transaction: Restricted Share Unit — 0 shares (Direct); Ordinary Shares — 14,290 shares (Direct)

Footnotes (1)

1. F1. Consists of a grant of restricted share units (RSUs) awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of shareholders of the Issuer following the end of the fiscal year ending on June 27, 2025, provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 10/21/2025 - 04:04 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Tilenius Stephanie

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
10/19/2025

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	10/19/2025		M		2,693	A	$0	14,937	D
Ordinary Shares	10/19/2025		F		647	D	$225.4	14,290	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	10/19/2025		M			2,693	(1)	(1)	Ordinary Shares	2,693	$0	0	D

Explanation of Responses:

1. Consists of a grant of restricted share units (RSUs) awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of shareholders of the Issuer following the end of the fiscal year ending on June 27, 2025, provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

Remarks:

	/s/ Louis J. Thorson, Attorney-in-Fact for Stephanie Tilenius	10/21/2025
	** 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.