WILLIAM D. MOSLEY - 20 Aug 2025 Form 4 Insider Report for Seagate Technology Holdings plc (STX)

Role
CEO, Director
Signature
/s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley
Issuer symbol
STX
Transactions as of
20 Aug 2025
Net transactions value
$0
Form type
4
Filing time
22 Aug 2025, 18:03:06 UTC
Previous filing
04 Aug 2025
Next filing
04 Sep 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
MOSLEY WILLIAM D CEO, Director SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley 22 Aug 2025 0001388390

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction STX NQ Stock Option Award $0 +153,700 $0.000000 153,700 20 Aug 2025 Ordinary Shares 153,700 $158.40 Direct F1
transaction STX Restricted Share Unit Award $0 +25,617 $0.000000 25,617 20 Aug 2025 Ordinary Shares 25,617 $0.000000 Direct F2
transaction STX Restricted Share Unit Award $0 +21,065 $0.000000 21,065 20 Aug 2025 Ordinary Shares 21,065 $0.000000 Direct F3
transaction STX Restricted Share Unit Award $0 +6,320 $0.000000 6,320 20 Aug 2025 Ordinary Shares 6,320 $0.000000 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Options granted to the Reporting Person under the Seagate Technology plc 2022 Equity Incentive Plan the ("Plan") are subject to a four-year vesting schedule. Subject to continuous employment, 25% shall vest on August 20, 2026 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.
F2 Consists of a grant of Restricted Share Unit (RSU) awarded to the Reporting Person under the Plan, subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on August 20, 2026 and then in equal quarterly installments thereafter.
F3 Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, 100% of such RSUs will vest on the first anniversary of the grant date, August 20, 2026.