Mark Adams - 19 Oct 2025 Form 4 Insider Report for Seagate Technology Holdings plc (STX)

Reporting relationship: Director
Issuer ticker: STX
Reported as of: 19 Oct 2025
Net transaction value: -$145,834
SEC form: 4
Accepted by SEC: 21 Oct 2025, 16:03:56 UTC
Prior SEC filing: 16 Oct 2025
Next SEC filing: 22 Oct 2025
Source filing: View source filing
Reporting owner signature: /s/ Louis A. Thorson, Attorney-in-fact for Mark W. Adams

Key filing fact

Mark Adams filed Form 4 for Seagate Technology Holdings plc (STX) on 21 Oct 2025.

Key facts

This page summarizes Mark Adams's Form 4 filing for Seagate Technology Holdings plc (STX).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 21 Oct 2025, 16:03.

Change

Previous filing in this sequence was filed on 16 Oct 2025.
Current net transaction value: -$145,834.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001349123 Primary reporting owner

Adams Mark

Relationship: Director
Address: SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT
Signature: /s/ Louis A. Thorson, Attorney-in-fact for Mark W. Adams
Signature date: 21 Oct 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

STX transaction

Ordinary Shares

Options Exercise

Transaction value: $0
Shares: +2,693
Change %
Price: $0.000000
Shares after: 2,693
Date: 19 Oct 2025
Ownership: Direct

STX transaction

Ordinary Shares

Tax liability

Transaction value: $145,834
Shares: -647
Change %: -24%
Price: $225.40
Shares after: 2,046
Date: 19 Oct 2025
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

STX transaction Derivative

Restricted Share Unit

Options Exercise

Transaction value: $0
Shares: -2,693
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 19 Oct 2025
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 2,693
Exercise price: $0.000000
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Consists of a grant of restricted share units (RSUs) awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan for no consideration. Each RSU represents a contingent right to receive one Ordinary Share of the Issuer. Subject to the Reporting Person's continuous service with the Issuer, shares will be released to the Reporting Person on the earlier of (i) one year from the date of grant and (ii) the date of the next annual general meeting of shareholders of the Issuer following the end of the fiscal year ending on June 27, 2025, provided such annual general meeting is at least fifty (50) weeks after the immediately preceding fiscal year's annual general meeting.