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).
X	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 CALIFORNIA 94538 (City) (State) (Zip) UNITED STATES (Country)	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
	2a. Foreign Trading Symbol
	3. Date of Earliest Transaction (Month/Day/Year) 09/11/2026	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person
	4. If Amendment, Date of Original Filed (Month/Day/Year)

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	09/11/2026		M		8,517(1)	A	$68.83	38,137	D
Ordinary Shares	09/11/2026		M		15,067	A	$64.31	53,204	D
Ordinary Shares	09/11/2026		M		13,475	A	$101.34	66,679	D
Ordinary Shares	09/11/2026		M		13,439	A	$158.4	80,118	D
Ordinary Shares	09/11/2026		S		1,040	D	$819.3885(2)	79,078	D
Ordinary Shares	09/11/2026		S		1,320	D	$820.5433(3)	77,758	D
Ordinary Shares	09/11/2026		S		1,550	D	$821.4165(4)	76,208	D
Ordinary Shares	09/11/2026		S		1,690	D	$822.4984(5)	74,518	D
Ordinary Shares	09/11/2026		S		880	D	$823.7205(6)	73,638	D
Ordinary Shares	09/11/2026		S		1,400	D	$824.595(7)	72,238	D
Ordinary Shares	09/11/2026		S		800	D	$825.6525(8)	71,438	D
Ordinary Shares	09/11/2026		S		1,840	D	$826.7184(9)	69,598	D
Ordinary Shares	09/11/2026		S		1,727	D	$827.7209(10)	67,871	D
Ordinary Shares	09/11/2026		S		3,321	D	$828.841(11)	64,550	D
Ordinary Shares	09/11/2026		S		5,593	D	$829.7666(12)	58,957	D
Ordinary Shares	09/11/2026		S		7,568	D	$830.7442(13)	51,389	D
Ordinary Shares	09/11/2026		S		4,589	D	$831.7088(14)	46,800	D
Ordinary Shares	09/11/2026		S		4,220	D	$832.6812(15)	42,580	D
Ordinary Shares	09/11/2026		S		2,080	D	$833.6653(16)	40,500	D
Ordinary Shares	09/11/2026		S		1,440	D	$834.8031(17)	39,060	D
Ordinary Shares	09/11/2026		S		1,320	D	$835.6733(18)	37,740	D
Ordinary Shares	09/11/2026		S		480	D	$836.9158(19)	37,260	D
Ordinary Shares	09/11/2026		S		200	D	$838.096(20)	37,060	D
Ordinary Shares	09/11/2026		S		880	D	$839.1473(21)	36,180	D
Ordinary Shares	09/11/2026		S		1,000	D	$840.1228(22)	35,180	D
Ordinary Shares	09/11/2026		S		320	D	$841.0502(23)	34,860	D
Ordinary Shares	09/11/2026		S		280	D	$842.229(24)	34,580	D
Ordinary Shares	09/11/2026		S		360	D	$843.5456(25)	34,220	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
NQ Options	$68.83	09/11/2026		M			8,517	(26)	09/09/2029	Ordinary Shares	8,517	$0	0	D
NQ Options	$64.31	09/11/2026		M			15,067	(27)	09/11/2030	Ordinary Shares	15,067	$0	18,080	D
NQ Options	$101.34	09/11/2026		M			13,475	(28)	09/09/2031	Ordinary Shares	13,475	$0	32,340	D
NQ Stock Option	$158.4	09/11/2026		M			13,439	(29)	08/20/2032	Ordinary Shares	13,439	$0	40,317	D

Explanation of Responses:

1. All option exercises and sales of Ordinary Shares reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on April 30, 2026.

2. These Ordinary Shares were sold in multiple trades at prices ranging from $818.88 to $819.71. 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.

3. These Ordinary Shares were sold in multiple trades at prices ranging from $819.95 to $820.93. 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.

4. These Ordinary Shares were sold in multiple trades at prices ranging from $820.96 to $821.94. 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.

5. These Ordinary Shares were sold in multiple trades at prices ranging from $822.05 to $823.03. 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.

6. These Ordinary Shares were sold in multiple trades at prices ranging from $823.12 to $824.10. 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.

7. These Ordinary Shares were sold in multiple trades at prices ranging from $824.14 to $825.13. 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.

8. These Ordinary Shares were sold in multiple trades at prices ranging from $825.14 to $826.13. 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.

9. These Ordinary Shares were sold in multiple trades at prices ranging from $826.14 to $827.10. 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.

10. These Ordinary Shares were sold in multiple trades at prices ranging from $827.17 to $828.10. 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.

11. These Ordinary Shares were sold in multiple trades at prices ranging from $828.23 to $829.22. 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.

12. These Ordinary Shares were sold in multiple trades at prices ranging from $829.24 to $830.23. 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.

13. These Ordinary Shares were sold in multiple trades at prices ranging from $830.24 to $831.23. 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.

14. These Ordinary Shares were sold in multiple trades at prices ranging from $831.24 to $832.23. 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.

15. These Ordinary Shares were sold in multiple trades at prices ranging from $832.24 to $833.23. 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.

16. These Ordinary Shares were sold in multiple trades at prices ranging from $833.25 to $834.20. 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.

17. These Ordinary Shares were sold in multiple trades at prices ranging from $834.29 to $835.28. 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.

18. These Ordinary Shares were sold in multiple trades at prices ranging from $835.29 to $836.27. 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.

19. These Ordinary Shares were sold in multiple trades at prices ranging from $836.38 to $837.35. 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.

20. These Ordinary Shares were sold in multiple trades at prices ranging from $837.58 to $838.44. 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.

21. These Ordinary Shares were sold in multiple trades at prices ranging from $838.71 to $839.47. 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.

22. These Ordinary Shares were sold in multiple trades at prices ranging from $839.72 to $840.44. 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.

23. These Ordinary Shares were sold in multiple trades at prices ranging from $840.76 to $841.60. 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.

24. These Ordinary Shares were sold in multiple trades at prices ranging from $842.02 to $842.52. 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.

25. These Ordinary Shares were sold in multiple trades at prices ranging from $843.41 to $843.95. 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.

26. Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One-quarter of the options vested on September 9, 2023 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.

27. Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One-quarter of the options vested on September 11, 2024 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.

28. Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One- quarter shall vest on September 9, 2025 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.

29. Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One-quarter vested on August 20, 2026 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.

Remarks:

	/s/ Louis J. Thorson, Attorney-in-Fact for Gianluca Romano	09/15/2026
	** 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.
* Form 4: SEC 1474 (03-26)