[Form 4] Seagate Technology Holdings plc Insider Trading Activity

Rhea-AI Filing Summary

Seagate Technology (STX) EVP & CFO Gianluca Romano reported open‑market sales of company stock on 11/13/2025. The transactions, executed in multiple tranches, totaled 8,002 ordinary shares at weighted average prices spanning $260.03 to $275.69, as detailed in the footnotes.

Following these sales, Romano beneficially owns 48,291 shares directly. The filing states all trades were made under a Rule 10b5‑1 trading plan adopted on August 1, 2025, which pre‑sets trading parameters.

Insights

Equity markets analyst

Routine insider sales under a 10b5-1 plan; neutral impact.

Seagate’s CFO sold 8,002 shares across several trades on 11/13/2025, with weighted average prices between $260.03 and $275.69. The filing notes these were executed under a Rule 10b5-1 plan adopted on August 1, 2025, indicating pre‑scheduled parameters.

Post‑transaction direct beneficial ownership is 48,291 shares. Such plan‑based sales are administrative and do not, by themselves, signal operational changes. Actual market effect depends on broader trading activity and company fundamentals disclosed elsewhere.

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 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 & CFO

3. Date of Earliest Transaction (Month/Day/Year)
11/13/2025

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	11/13/2025		S		300	D	$260.03(1)	55,993(2)	D
Ordinary Shares	11/13/2025		S		1,111	D	$261.7877(3)	54,882	D
Ordinary Shares	11/13/2025		S		1,512	D	$262.5841(4)	53,370	D
Ordinary Shares	11/13/2025		S		700	D	$263.5929(5)	52,670	D
Ordinary Shares	11/13/2025		S		400	D	$265.4025(6)	52,270	D
Ordinary Shares	11/13/2025		S		300	D	$266.68(7)	51,970	D
Ordinary Shares	11/13/2025		S		600	D	$267.5817(8)	51,370	D
Ordinary Shares	11/13/2025		S		479	D	$269.1031(9)	50,891	D
Ordinary Shares	11/13/2025		S		700	D	$270.5329(10)	50,191	D
Ordinary Shares	11/13/2025		S		400	D	$271.355(11)	49,791	D
Ordinary Shares	11/13/2025		S		700	D	$272.7114(12)	49,091	D
Ordinary Shares	11/13/2025		S		700	D	$273.7886(13)	48,391	D
Ordinary Shares	11/13/2025		S		100	D	$275.69	48,291	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

Explanation of Responses:

1. These Ordinary Shares were sold in multiple trades at prices ranging from $259.73 to $260.29. 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. All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025.

3. These Ordinary Shares were sold in multiple trades at prices ranging from $261.15 to $262.13. 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.

4. These Ordinary Shares were sold in multiple trades at prices ranging from $262.15 to $263.08. 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 $263.26 to $263.90. 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 $265.07 to $266.03. 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.

7. These Ordinary Shares were sold in multiple trades at prices ranging from $266.22 to $266.91. 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 $267.25 to $268.09. 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 $268.71 to $269.62. 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 $270.05 to $270.94. 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.

11. These Ordinary Shares were sold in multiple trades at prices ranging from $271.11 to $271.98. 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 $272.21 to $273.16. 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 $273.42 to $274.37. 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.

Remarks:

	/s/ Louis J. Thorson, Attorney-in-Fact for Gianluca Romano	11/14/2025
	** 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 did Seagate (STX) disclose in this Form 4?

The EVP & CFO, Gianluca Romano, reported selling 8,002 ordinary shares on 11/13/2025 in multiple open‑market trades.

What price range did the STX insider sales occur at?

Weighted average prices ranged from $260.03 to $275.69, with details provided for each tranche.

How many STX shares does the CFO hold after these transactions?

Following the sales, the CFO beneficially owns 48,291 shares directly.

Were the Seagate insider sales under a 10b5-1 plan?

Yes. All transactions were effected under a Rule 10b5‑1 trading plan adopted on August 1, 2025.

When did the Seagate (STX) insider sales take place?

The trades occurred on 11/13/2025.

Who is the reporting person in Seagate’s Form 4?

The reporting person is Gianluca Romano, Seagate’s EVP & CFO.