Seagate director Tilenius receives 1,580 award shares

The separate 345-unit award carries a service condition and a release schedule tied to a future annual general meeting.

Rhea-AI Filing Summary

Stephanie Tilenius, a director of Seagate Technology Holdings plc (STX), reported converting 1,580 restricted share units into 1,580 ordinary shares on October 24, 2026. She also reported 380 ordinary shares delivered or withheld for payment of exercise price or tax liability, with a reported price of $630.49 per share.

Tilenius also acquired 345 restricted share units for no consideration under the company’s 2022 Equity Incentive Plan on October 24, 2026. Each RSU represents a contingent right to one ordinary share. The award is subject to continuous service, with release on the earlier of one year after grant or the next annual general meeting after the fiscal year ending July 2, 2027, provided that meeting is at least 50 weeks after the prior fiscal year’s annual meeting. The converted RSUs came from a grant awarded October 25, 2025, subject to continuous service and its stated release conditions.

Insider Trade Summary

1,580 shares exercised/converted

Exercise 4 txns

Insider Tilenius Stephanie

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Share Unit F1	1,580	$0.00	$0.00
Grant/Award	Restricted Share Unit F2	345	$0.00	$0.00
Exercise	Ordinary Shares	1,580	$0.00	$0.00
Exercise Price or Tax Liability	Ordinary Shares	380	$630.49	$240K

Holdings After Transaction: Restricted Share Unit — 345 contracts (Direct); Ordinary Shares — 11,864 shares (Direct)

Footnotes (2)

1. F1. Consists of a grant of restricted share units (RSUs) awarded to the Reporting Person on October 25, 2025 under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "Plan") for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of shareholders of the Issuer following the end of the fiscal year ending on July 3, 2026, provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.
2. F2. Consists of a grant of restricted share units (RSUs) awarded to the Reporting Person on October 24, 2026 under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "Plan") for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of shareholders of the Issuer following the end of the fiscal year ending on July 2, 2027, provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

Key Figures

Restricted share units converted: 1,580 RSUs Ordinary shares acquired: 1,580 shares Shares delivered or withheld: 380 shares +2 more

5 metrics

Restricted share units converted 1,580 RSUs October 24, 2026

Ordinary shares acquired 1,580 shares October 24, 2026

Shares delivered or withheld 380 shares For payment of exercise price or tax liability

Reported price per share $630.49 per share 380-share transaction on October 24, 2026

Restricted share units awarded 345 RSUs Awarded October 24, 2026, for no consideration

Key Terms

restricted share units (RSUs), contingent right, continuous service

3 terms

restricted share units (RSUs) technical

"grant of restricted share units (RSUs)"

Restricted share units (RSUs) are a form of employee pay where a company promises to give shares (or their cash value) to workers after certain conditions, usually time or performance, are met. For investors, RSUs matter because they can increase the number of shares outstanding and signal how management is being paid and incentivized—think of them as delayed bonuses that convert into ownership when vesting conditions are satisfied.

contingent right technical

"Each RSU represents a contingent right to receive one Ordinary Share"

continuous service technical

"Subject to the Reporting Person's continuous service with the Issuer"

FAQ

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

How many STX shares did Stephanie Tilenius receive from RSUs?

On October 24, 2026, Tilenius reported converting 1,580 restricted share units into 1,580 ordinary shares. She also reported 380 ordinary shares delivered or withheld for payment of exercise price or tax liability, at a reported price of $630.49 per share.

What are the terms of Stephanie Tilenius’s 345-unit STX award?

Tilenius was awarded 345 restricted share units for no consideration on October 24, 2026, under the 2022 Equity Incentive Plan. Each represents a contingent right to one ordinary share. Subject to continuous service, shares are released on the earlier of one year after grant or the specified annual general meeting, if it is at least 50 weeks after the prior fiscal year’s meeting.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/26/2026 - 06:47 PM EDT Accepted by SEC EDGAR 10/26/2026 - 06:47 PM EDT 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^*

Tilenius Stephanie

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/24/2026

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	10/24/2026		M		1,580	A	$0	12,244	D
Ordinary Shares	10/24/2026		F		380	D	$630.49	11,864	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	10/24/2026		M			1,580	(1)	(1)	Ordinary Shares	1,580	$0	0	D
Restricted Share Unit	$0	10/24/2026		A		345		(2)	(2)	Ordinary Shares	345	$0	345	D

Explanation of Responses:

1. Consists of a grant of restricted share units (RSUs) awarded to the Reporting Person on October 25, 2025 under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "Plan") for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of shareholders of the Issuer following the end of the fiscal year ending on July 3, 2026, provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

2. Consists of a grant of restricted share units (RSUs) awarded to the Reporting Person on October 24, 2026 under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "Plan") for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of shareholders of the Issuer following the end of the fiscal year ending on July 2, 2027, provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.

Remarks:

	/s/ Louis J. Thorson, Attorney-in-Fact for Stephanie Tilenius	10/26/2026
	** 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)