[Form 4] Seagate Technology Holdings plc Insider Trading Activity

Rhea-AI Filing Summary

Seagate Technology Holdings plc (STX) reporting person John C. Morris (EVP & CTO) disclosed a sale of ordinary shares on 09/16/2025. The filing shows 377 shares were sold at a price of $211.26 per share under a Rule 10b5-1 trading plan adopted on June 1, 2025. After the transaction the reporting person beneficially owned 13,238 shares, held directly. The Form 4 was signed by an attorney-in-fact on 09/17/2025. The filing contains no derivative transactions and provides only the non-derivative sale details and the 10b5-1 disclosure.

Positive

• Sale executed under a Rule 10b5-1 plan, indicating the transaction was preplanned and compliant with insider trading rules
• Clear disclosure of post-transaction beneficial ownership: 13,238 shares held directly

Negative

• Insider sold 377 shares, which some investors may view negatively despite being preplanned
• Filing lacks context on percentage ownership relative to total outstanding shares, limiting assessment of materiality

Insights

Securities Analyst

TL;DR: A small, preplanned insider sale under a 10b5-1 plan; disclosure is routine and not clearly material to valuation.

The Form 4 documents a disposition of 377 ordinary shares by John C. Morris at $211.26 per share, leaving 13,238 shares beneficially owned. The sale was executed under a Rule 10b5-1 trading plan adopted June 1, 2025, which typically indicates the trade was prearranged and not based on contemporaneous insider knowledge. No derivative activity or other compensatory issuances are reported. For most investors, the size of the sale relative to total outstanding shares is not provided here, so its market impact is likely limited based on the information in this filing alone.

Corporate Governance Expert

TL;DR: Proper Form 4 disclosure of a planned sale; governance signal is neutral given the 10b5-1 plan use.

The filing appropriately identifies the reporting person as EVP & CTO and discloses the 10b5-1 plan adoption date, which strengthens compliance transparency. The explicit reporting of post-transaction beneficial ownership at 13,238 shares provides clarity on continuing insider holdings. The absence of amendments or additional transactions in this Form 4 suggests a single, routine disposition event. Based solely on this document, there is no evidence of governance concerns or policy violations.

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).

1. Name and Address of Reporting Person^*

Morris John Christopher

(Last) (First) (Middle)

SEAGATE TECHNOLOGY 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 & CTO

3. Date of Earliest Transaction (Month/Day/Year)
09/16/2025

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	09/16/2025		S		377(1)	D	$211.26	13,238	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 under a Rule 10b5-1 trading plan adopted by the Reporting Person on June 1, 2025.

Remarks:

	/s/ Louis J. Thorson, Attorney-in-Fact for John C. Morris	09/17/2025
	** 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 the Form 4 for STX filed by John C. Morris disclose?

The Form 4 discloses a sale of 377 ordinary shares on 09/16/2025 at $211.26 per share, with 13,238 shares owned after the sale.

Was the sale by the STX reporting person part of a prearranged plan?

Yes. The filing states the shares were sold under a Rule 10b5-1 trading plan adopted on June 1, 2025.

Did the Form 4 report any derivative transactions for STX?

No. The filing contains only non-derivative sale details and explicitly shows no derivative securities reported.

Who signed the Form 4 for John C. Morris?

The Form 4 was signed by Louis J. Thorson, Attorney-in-Fact for John C. Morris on 09/17/2025.

What position does the reporting person hold at Seagate (STX)?

The filing identifies the reporting person as EVP & CTO of Seagate Technology Holdings plc.