WILLIAM D. MOSLEY - 02 Jun 2025 Form 4 Insider Report for Seagate Technology Holdings plc (STX)

Role
Chief Executive Officer, Director
Signature
/s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley
Issuer symbol
STX
Transactions as of
02 Jun 2025
Net transactions value
-$5,652,088
Form type
4
Filing time
04 Jun 2025, 16:41:34 UTC
Previous filing
04 Jun 2025
Next filing
10 Jun 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
MOSLEY WILLIAM D Chief Executive Officer, Director SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley 04 Jun 2025 0001388390

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction STX Ordinary Shares Sale $318,315 -2,699 -0.5% $117.94 532,978 02 Jun 2025 Direct F1, F2
transaction STX Ordinary Shares Sale $1,153,483 -9,715 -1.8% $118.73 523,263 02 Jun 2025 Direct F3
transaction STX Ordinary Shares Sale $905,734 -7,586 -1.4% $119.40 515,677 02 Jun 2025 Direct F4
transaction STX Ordinary Shares Options Exercise $2,739,000 +50,000 +9.7% $54.78 565,677 03 Jun 2025 Direct
transaction STX Ordinary Shares Sale $6,013,555 -50,000 -8.8% $120.27 515,677 03 Jun 2025 Direct F5

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 Options Options Exercise $0 -50,000 -48% $0.000000 54,347 03 Jun 2025 Ordinary Shares 50,000 $54.78 Direct F6
* 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 transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025.
F2 These Ordinary Shares were sold in multiple trades at prices ranging from $117.16 to $118.15. 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 $118.16 to $119.14. 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 $119.17 to $119.72. 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 $120.00 to $120.58. 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 Options granted to the Reporting Person under the Issuer's 2012 Equity Incentive Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the option shares vested on September 9, 2020. The remaining option shares vest in equal monthly installments over the 36 months following September 9, 2020.