John Christopher Morris - 11 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
11 Sep 2025
Net transactions value
-$3,709,495
Form type
4
Filing time
15 Sep 2025, 18:10:58 UTC
Previous filing
11 Sep 2025
Next filing
17 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 15 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 +941 +3.8% $0.000000 25,620 11 Sep 2025 Direct
transaction STX Ordinary Shares Tax liability $84,628 -430 -1.7% $196.81 25,190 11 Sep 2025 Direct
transaction STX Ordinary Shares Sale $351,390 -1,812 -7.2% $193.92 23,378 12 Sep 2025 Direct F1, F2
transaction STX Ordinary Shares Sale $818,735 -4,200 -18% $194.94 19,178 12 Sep 2025 Direct F3
transaction STX Ordinary Shares Sale $995,686 -5,081 -26% $195.96 14,097 12 Sep 2025 Direct F4
transaction STX Ordinary Shares Sale $581,935 -2,954 -21% $197.00 11,143 12 Sep 2025 Direct F5
transaction STX Ordinary Shares Sale $257,204 -1,300 -12% $197.85 9,843 12 Sep 2025 Direct F6
transaction STX Ordinary Shares Options Exercise $0 +6,935 +70% $0.000000 16,778 14 Sep 2025 Direct
transaction STX Ordinary Shares Tax liability $619,916 -3,163 -19% $195.99 13,615 14 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 -941 -11% $0.000000 7,535 11 Sep 2025 Ordinary Shares 941 $0.000000 Direct F7
transaction STX Performance-Based Restricted Share Units Award $0 +6,935 $0.000000 6,935 14 Sep 2025 Ordinary Shares 6,935 $0.000000 Direct F8
transaction STX Performance-Based Restricted Share Units Options Exercise $0 -6,935 -100% $0.000000 0 14 Sep 2025 Ordinary Shares 6,935 $0.000000 Direct F8
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
F1 All sales of Ordinary Shares reported herein were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 1, 2025.
F2 These Ordinary Shares were sold in multiple trades at prices ranging from $193.33 to $194.28. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
F3 These Ordinary Shares were sold in multiple trades at prices ranging from $194.40 to $195.38. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
F4 These Ordinary Shares were sold in multiple trades at prices ranging from $195.42 to $196.41. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
F5 These Ordinary Shares were sold in multiple trades at prices ranging from $196.44 to $197.33. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
F6 These Ordinary Shares were sold in multiple trades at prices ranging from $197.54 to $198.22. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
F7 Consists of a grant of restricted share units awarded to the reporting person under the Seagate Technology plc 2022 Equity Incentive Plan. Subject to the Reporting Person's continuous employment, one-quarter vested starting on September 11, 2024 and then in equal quarterly installments over the following three years for a total vesting period of four years.
F8 On September 14, 2025, the Compensation Committee of the Board of Directors of the Issuer determined that the performance conditions were met with respect to 6,935 of the 7,985 Performance Share Units granted on September 9, 2022. The 6,935 Ordinary Shares vested on September 14, 2025.