Seagate Technology Holdings plc (STX) · Insider Trading (Form 4) SEC Filing

Statement of Changes in Beneficial Ownership

descriptionView SEC Filing

ACC: 0001137789-26-000138open_in_new

Total Value$1.56M

Trades3

Insiders1

Transaction Details

MOSLEY WILLIAM D

CEO, Director·Direct

Sell · Dispose

Ordinary Shares

Shares-1.77K

Price$880.19

Total Value$1.56M

Shares Owned After327.52K

Transaction DateJun 12, 2026

MOSLEY WILLIAM D

CEO, Director·Direct

Exercise · Dispose

Restricted Share UnitDerivative

Shares-3.32K

Price$0.00

Total Value$0

Shares Owned After16.59K

Transaction DateJun 11, 2026

Footnotes ▸

Consists of a grant of restricted share unit awarded to the reporting person under the Seagate Technology Holdings 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. | Consists of a grant of restricted share unit awarded to the reporting person under the Seagate Technology Holdings 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.

MOSLEY WILLIAM D

CEO, Director·Direct

Exercise · Acquire

Ordinary Shares

Shares+3.32K

Price$0.00

Total Value$0

Shares Owned After329.29K

Transaction DateJun 11, 2026

Post-Transaction Holdings

MOSLEY WILLIAM D

Security	Shares	Change
Ordinary Shares	327.52K	+1.55K (0.48%)
Restricted Share Unit	16.59K	-3.32K (-16.67%)

Original SEC Filing Textexpand_more

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-11 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Seagate Technology Holdings plc (STX) CIK: 0001137789 --- Reporting Owner --- Name: MOSLEY WILLIAM D CIK: 0001388390 Role: Director, Officer (CEO) --- Non-Derivative Transactions --- [Transaction #1] Security: Ordinary Shares Date: 2026-06-11 | Code: M (Exercise of derivative) Shares: +3,319 | Price: $0.00 Shares Owned After: 329,285.25 | Ownership: D (Direct) [Transaction #2] Security: Ordinary Shares Date: 2026-06-12 | Code: S (Open market sale) Shares: -1,768.25 | Price: $880.19 Total Value: $1,556,393.85 Shares Owned After: 327,517 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Restricted Share Unit Date: 2026-06-11 | Code: M (Exercise of derivative) Shares: -3,319 | Price: $0.00 Shares Owned After: 16,595 | Ownership: D (Direct) Footnotes: [F1] Consists of a grant of restricted share unit awarded to the reporting person under the Seagate Technology Holdings 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. [F1] Consists of a grant of restricted share unit awarded to the reporting person under the Seagate Technology Holdings 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. --- Footnotes (Complete Index) --- F1: Consists of a grant of restricted share unit awarded to the reporting person under the Seagate Technology Holdings 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. --- Signature --- /s/ /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley (2026-06-15)