Seagate CTO sells 572 shares after RSU exercise

EVP & CTO John Christopher Morris exercised RSUs and sold a portion of the resulting Seagate shares without a Rule 10b5-1 trading plan.

Rhea-AI Filing Summary

Seagate Technology Holdings plc (STX) reported that EVP & CTO John Christopher Morris exercised restricted share units into 1,131 Ordinary Shares on September 9, 2026 and sold 572.25 Ordinary Shares on September 10, 2026 in open-market or private transactions at prices around $862 per share. No Rule 10b5-1 trading plan is reported, and the RSU grants vest over four-year periods under Seagate's equity incentive plans.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 6 txns

Insider Morris John Christopher

Role EVP & CTO

Sold 572.25 shs ($493K)

Approx. gross sale proceeds $493K

Approx. exercise cost $0.00

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	253	$862.125	$218K
Sale	Ordinary Shares	319.25	$862.136	$275K
Exercise	Restricted Share Unit F1	500	$0.00	$0.00
Exercise	Restricted Share Unit F2	631	$0.00	$0.00
Exercise	Ordinary Shares	500	$0.00	$0.00
Exercise	Ordinary Shares	631	$0.00	$0.00

Holdings After Transaction: Restricted Share Unit — 5,055 contracts (Direct); Ordinary Shares — 16,018.5 shares (Direct)

Footnotes (2)

1. F1. Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "2022 Plan"). One-quarter of the shares vested on September 9, 2023 and the remaining portion vested in equal quarterly installments over the following three years for a total vesting period of four years
2. F2. Consists of a grant of RSUs awarded to the Reporting Person under the Plan. One-quarter of the shares vested on September 9, 2025 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.

Key Figures

Shares sold: 572.25 Ordinary Shares Sale price (lot 1): $862.13 per share Sale price (lot 2): $862.14 per share +3 more

6 metrics

Shares sold 572.25 Ordinary Shares Total Ordinary Shares sold by John Christopher Morris on September 10, 2026

Sale price (lot 1) $862.13 per share 253 Ordinary Shares sold on September 10, 2026

Sale price (lot 2) $862.14 per share 319.25 Ordinary Shares sold on September 10, 2026

RSUs exercised 1,131 restricted share units RSUs converted into Ordinary Shares on September 9, 2026

RSU grant 1 vesting start September 9, 2023 One-quarter vested then; remainder vests quarterly over three years

RSU grant 2 vesting start September 9, 2025 One-quarter vested then; remainder to vest quarterly over three years

Key Terms

Restricted Share Unit, 2022 Equity Incentive Plan, vesting period

3 terms

Restricted Share Unit financial

"Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan"

A restricted share unit (RSU) is a promise by a company to give an employee a set number of company shares at a future date, typically after meeting time or performance conditions. For investors, RSUs matter because when they convert into actual shares they increase the number of shares outstanding (like unlocking more tickets in a game), which can dilute existing holders, and they align employee incentives with company performance, influencing behavior and long-term value.

2022 Equity Incentive Plan financial

"RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan"

vesting period financial

"the remaining portion vested in equal quarterly installments over the following three years for a total vesting period of four years"

A vesting period is the set amount of time someone must wait before they fully own granted shares, stock options, or other equity tied to their work or an agreement; ownership increases gradually or in steps during that time. Investors care because vesting determines when insiders or employees can sell shares, which affects future supply of stock, company incentives and executive retention—think of it like unlocking ownership over installments rather than receiving it all at once.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Seagate (STX) report for EVP & CTO John Christopher Morris?

EVP & CTO John Christopher Morris exercised 1,131 restricted share units into Ordinary Shares on September 9, 2026 and sold 572.25 Ordinary Shares on September 10, 2026 in open-market or private transactions.

How many Seagate (STX) shares did John Christopher Morris sell and at what prices?

John Christopher Morris sold 572.25 Ordinary Shares of Seagate, including 253 shares at $862.13 per share and 319.25 shares at $862.14 per share, on September 10, 2026 in open-market or private transactions.

How many Seagate (STX) RSUs did John Christopher Morris exercise in this Form 4?

He exercised a total of 1,131 restricted share units into Ordinary Shares on September 9, 2026, consisting of 500 RSUs from one grant and 631 RSUs from another grant.

Were John Christopher Morris’s Seagate (STX) share sales under a Rule 10b5-1 trading plan?

The filing indicates no Rule 10b5-1 trading plan: the document-level checkbox affirming that the transactions were made pursuant to such a plan is not checked.

What is the vesting schedule for the Seagate (STX) RSU grants in this Form 4?

One RSU grant vested one-quarter on September 9, 2023 with the rest in equal quarterly installments over the following three years. A second grant vested one-quarter on September 9, 2025 with the remaining portion vesting in equal quarterly installments over the following three years.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/11/2026 - 04:47 PM Accepted by SEC EDGAR 09/11/2026 - 04:47 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^*

Morris John Christopher

(Last) (First) (Middle)

SEAGATE TECHNOLOGY 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 & CTO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/09/2026

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	09/09/2026		M		500	A	$0	15,959.75	D
Ordinary Shares	09/10/2026		S		253	D	$862.125	15,706.75	D
Ordinary Shares	09/09/2026		M		631	A	$0	16,337.75	D
Ordinary Shares	09/10/2026		S		319.25	D	$862.136	16,018.5	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	09/09/2026		M			500	(1)	(1)	Ordinary Shares	500	$0	0	D
Restricted Share Unit	$0	09/09/2026		M			631	(2)	(2)	Ordinary Shares	631	$0	5,055	D

Explanation of Responses:

1. Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "2022 Plan"). One-quarter of the shares vested on September 9, 2023 and the remaining portion vested in equal quarterly installments over the following three years for a total vesting period of four years

2. Consists of a grant of RSUs awarded to the Reporting Person under the Plan. One-quarter of the shares vested on September 9, 2025 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.

Remarks:

	/s/ Louis J. Thorson, Attorney-in-Fact for John C. Morris	09/11/2026
	** 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)