John Christopher Morris - 09 Sep 2025 Form 4 Insider Report for Seagate Technology Holdings plc (STX)

Role
EVP & CTO
Signature
/s/ Louis J. Thorson, Attorney-in-Fact for John C. Morris
Issuer symbol
STX
Transactions as of
09 Sep 2025
Net transactions value
-$478,209
Form type
4
Filing time
11 Sep 2025, 16:05:30 UTC
Previous filing
22 Aug 2025
Next filing
15 Sep 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Morris John Christopher EVP & CTO SEAGATE TECHNOLOGY PLC, 47488 KATO ROAD, FREMONT /s/ Louis J. Thorson, Attorney-in-Fact for John C. Morris 11 Sep 2025 0001988271

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction STX Ordinary Shares Options Exercise $0 +1,885 +8.7% $0.000000 23,590 09 Sep 2025 Direct F1, F2
transaction STX Ordinary Shares Tax liability $164,767 -860 -3.6% $191.59 22,730 09 Sep 2025 Direct
transaction STX Ordinary Shares Options Exercise $0 +499 +2.2% $0.000000 23,229 09 Sep 2025 Direct
transaction STX Ordinary Shares Tax liability $43,683 -228 -0.98% $191.59 23,001 09 Sep 2025 Direct
transaction STX Ordinary Shares Options Exercise $0 +2,526 +11% $0.000000 25,527 09 Sep 2025 Direct
transaction STX Ordinary Shares Tax liability $220,712 -1,152 -4.5% $191.59 24,375 09 Sep 2025 Direct
transaction STX Ordinary Shares Options Exercise $0 +560 +2.3% $0.000000 24,935 09 Sep 2025 Direct
transaction STX Ordinary Shares Tax liability $49,047 -256 -1% $191.59 24,679 09 Sep 2025 Direct

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 Restricted Share Unit Options Exercise $0 -1,885 -100% $0.000000 0 09 Sep 2025 Ordinary Shares 1,885 $0.000000 Direct F3
transaction STX Restricted Share Unit Options Exercise $0 -499 -20% $0.000000 1,997 09 Sep 2025 Ordinary Shares 499 $0.000000 Direct F4
transaction STX Restricted Share Unit Options Exercise $0 -2,526 -25% $0.000000 7,579 09 Sep 2025 Ordinary Shares 2,526 $0.000000 Direct F5
transaction STX Restricted Share Unit Options Exercise $0 -560 -100% $0.000000 0 09 Sep 2025 Ordinary Shares 560 $0.000000 Direct F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The amount of securities beneficially owned has been updated to reflect 8,676 shares held continuously by the reporting person since prior to becoming a reporting person director for the Company, but not previously reported due to an administrative oversight.
F2 Includes 168 Ordinary Shares purchased by Reporting Person on July 31, 2025 under the Issuer's Employee Stock Purchase Plan. Such acquisition is exempt from reporting pursuant to Rule 16b-3 under the Securities Exchange Act of 1934.
F3 Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology plc Equity Incentive Plan (the "Plan"). Subject to the Reporting Person's continuous employment, one-quarter of the shares vested on September 9, 2022 and each one-year anniversary thereafter for a total vesting period of four years.
F4 Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, one-quarter of the shares vested 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.
F5 Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, 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.
F6 Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Such RSUs vested 100% on September 9, 2025, the first anniversary of the grant.