[Form 4] Seagate Technology Holdings plc Insider Trading Activity

Rhea-AI Filing Summary

Seagate Technology Holdings plc (STX) director Michael R. Cannon reported insider activity. On 10/19/2025, 3,427 ordinary shares were acquired at $0 via transaction code “M,” reflecting the conversion/settlement of restricted share units. On the same date, 823 shares were disposed at $225.4 under transaction code “F.”

Following these transactions, Cannon directly owned 13,439 shares, with an additional 6,885 shares held indirectly via the Michael R. Cannon Trust. The footnote states each RSU equals one ordinary share and that release is subject to continuous service, occurring on the earlier of one year from grant or the next annual general meeting following the fiscal year ending June 27, 2025, provided that meeting is at least 50 weeks after the prior year’s meeting.

Insights

Securities law analyst

Routine Form 4 showing RSU settlement and related share disposition.

The filing records an “M” transaction for 3,427 RSUs converting into ordinary shares at $0, which is typical for equity awards that settle without cash. It also shows an “F” transaction for 823 shares at $225.4, a standard Form 4 code for a share disposition tied to an award event.

Post‑transaction holdings are 13,439 shares directly and 6,885 shares indirectly via a trust. The footnote outlines RSU release mechanics linked to service and the annual general meeting following the fiscal year ending June 27, 2025. Taken together, this looks administrative and does not alter the investment thesis.

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
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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^*

CANNON MICHAEL R

(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		3,427	A	$0	14,262	D
Ordinary Shares	10/19/2025		F		823	D	$225.4	13,439	D
Ordinary Shares								6,885	I	Michael R. Cannon Trust

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			3,427	(1)	(1)	Ordinary Shares	3,427	$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 (the "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 A. Thorson, Attorney-in-fact for Michael R. Cannon	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.

FAQ

What insider transaction did STX director Michael R. Cannon report?

On 10/19/2025, he acquired 3,427 ordinary shares at $0 (code M) and disposed of 823 shares at $225.4 (code F).

How many STX shares does Michael R. Cannon hold after the transactions?

He holds 13,439 shares directly and 6,885 shares indirectly via the Michael R. Cannon Trust.

What do the Form 4 transaction codes mean in this STX filing?

Code M reflects RSU conversion/settlement into shares; code F reflects a share disposition recorded in connection with the award event.

What were the prices reported for the STX share transactions?

The acquisition was at $0 per share for RSU settlement; the disposition was at $225.4 per share.

What are the key RSU terms disclosed for STX?

Each RSU equals one ordinary share; release occurs on the earlier of one year from grant or the next annual general meeting following the fiscal year ending June 27, 2025, subject to continuous service and the 50‑week condition.