WILLIAM D. MOSLEY - 20 Feb 2026 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 Feb 2026
Net transactions value
-$2,452,682
Form type
4
Filing time
23 Feb 2026, 17:20:32 UTC
Previous filing
03 Feb 2026
Next filing
03 Mar 2026
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 23 Feb 2026 0001388390

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction STX Ordinary Shares Options Exercise $0 +11,807 +2.9% $0.000000 421,863 20 Feb 2026 Direct
transaction STX Ordinary Shares Tax liability $2,452,682 -5,966 -1.4% $411.11 415,897 20 Feb 2026 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 Performance-Based Restricted Share Units Options Exercise $0 -11,807 -100% $0.000000 0 20 Feb 2026 Ordinary Shares 11,807 $0.000000 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On January 24, 2026 the Compensation and People Committee of the Board of Directors of the Issuer determined that the performance conditions were met with respect to the 11,807 Performance Share Units granted on February 20, 2024. The 11,807 Ordinary Shares vested on February 20, 2026.