Seagate (STX) EVP & CTO exercises RSUs, uses 516 shares for taxes

Rhea-AI Filing Summary

Seagate Technology Holdings plc EVP & CTO John Christopher Morris reported routine equity compensation activity involving restricted share units (RSUs). On March 9, 2026, he exercised RSUs covering 1,130 Ordinary Shares (499 and 631 shares) at a conversion price of $0.00 per share.

In connection with these vestings, a total of 516 Ordinary Shares were disposed of at $374.33 per share to cover tax obligations, coded as tax-withholding dispositions rather than open-market sales. Following these transactions, Morris directly holds 17,180 Ordinary Shares.

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

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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^*

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)
03/09/2026

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	03/09/2026		M		499	A	$0	17,065	D
Ordinary Shares	03/09/2026		F		228	D	$374.33	16,837	D
Ordinary Shares	03/09/2026		M		631	A	$0	17,468	D
Ordinary Shares	03/09/2026		F		288	D	$374.33	17,180	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	03/09/2026		M			499	(1)	(1)	Ordinary Shares	499	$0	999	D
Restricted Share Unit	$0	03/09/2026		M			631	(2)	(2)	Ordinary Shares	631	$0	6,317	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"). Subject to the Reporting Person's continuous employment, such RSUs vested as to one-quarter of the shares on September 9, 2023 and the remaining portion shall vest 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 2022 Plan. Subject to the Reporting Person's continuous employment, one-quarter 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	03/11/2026
	** 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.
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FAQ

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

John Christopher Morris exercised restricted share units into 1,130 Ordinary Shares and had 516 shares withheld to cover taxes. These transactions reflect routine equity compensation activity rather than discretionary open-market buying or selling.

Were the Seagate (STX) Morris Form 4 transactions open-market stock sales?

No, the Form 4 shows no open-market sales. The dispositions, totaling 516 Ordinary Shares at $374.33 per share, are coded as tax-withholding transactions related to RSU vesting, not discretionary selling into the market.

How many Seagate (STX) shares did John Christopher Morris acquire through RSU exercises?

Morris exercised RSUs covering 1,130 Ordinary Shares, split between 499 shares and 631 shares. These RSUs converted at a price of $0.00 per share as part of his equity compensation package under Seagate’s 2022 Equity Incentive Plan.

How many Seagate (STX) shares does John Christopher Morris hold after this Form 4?

After the reported transactions, Morris directly holds 17,180 Ordinary Shares of Seagate Technology Holdings plc. This total reflects the RSU conversions and the shares withheld to satisfy tax obligations on the vesting events.

What does transaction code F mean in the Seagate (STX) Morris filing?

Transaction code F indicates shares used to pay tax liabilities or exercise costs. In this filing, 516 Ordinary Shares at $374.33 per share were disposed of to satisfy taxes on RSU vesting, not as voluntary market sales.

Which equity plan governs the RSUs in the Seagate (STX) Morris Form 4?

The RSUs were granted under the Seagate Technology Holdings plc 2022 Equity Incentive Plan. Footnotes explain that each grant vests over a four-year period, with one-quarter vesting initially and the remainder in equal quarterly installments.