Kian Fatt Chong - 20 Aug 2026 Form 4 Insider Report for Seagate Technology Holdings plc (STX)

Reporting relationship: EVP Global Operations
Issuer ticker: STX
Reported as of: 20 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 24 Aug 2026, 17:11:05 UTC
Prior SEC filing: 15 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Louis J. Thorson, Attorney-in-Fact for Kian Fatt Chong

Key filing fact

Kian Fatt Chong filed Form 4 for Seagate Technology Holdings plc (STX) on 24 Aug 2026.

Key facts

This page summarizes Kian Fatt Chong's Form 4 filing for Seagate Technology Holdings plc (STX).
10 reported transactions and 7 derivative rows are listed below.
Accepted by SEC: 24 Aug 2026, 17:11.

Change

Previous filing in this sequence was filed on 15 Jun 2026.
Current net transaction value: $0.

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 0001987421 Primary reporting owner

Chong Kian Fatt

Relationship: EVP Global Operations
Address: SEAGATE TECHNOLOGY PLC, 47488 KATO ROAD, FREMONT
Signature: /s/ Louis J. Thorson, Attorney-in-Fact for Kian Fatt Chong
Signature date: 24 Aug 2026

Reported non-derivative transactions

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

STX transaction

Ordinary Shares

Options Exercise

Transaction value
Shares: +1,310
Change %: +52%
Price: $0.000000^*
Shares after: 3,828
Date: 20 Aug 2026
Ownership: Direct

STX transaction

Ordinary Shares

Options Exercise

Transaction value
Shares: +4,258
Change %: +111%
Price: $0.000000^*
Shares after: 8,086
Date: 20 Aug 2026
Ownership: Direct

STX transaction

Ordinary Shares

Options Exercise

Transaction value
Shares: +1,278
Change %: +16%
Price: $0.000000^*
Shares after: 9,364
Date: 20 Aug 2026
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
Shares: -1,310
Change %: -25%
Price: $0.000000^*
Shares after: 3,931
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 1,310
Exercise price: $0.000000
Footnotes: F1

STX transaction Derivative

Restricted Share Unit

Options Exercise

Transaction value
Shares: -4,258
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 4,258
Exercise price: $0.000000
Footnotes: F2

STX transaction Derivative

Restricted Share Unit

Options Exercise

Transaction value
Shares: -1,278
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 1,278
Exercise price: $0.000000
Footnotes: F2

STX transaction Derivative

Restricted Share Unit

Award

Transaction value
Shares: +1,420
Change %
Price: $0.000000^*
Shares after: 1,420
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 1,420
Exercise price: $0.000000
Footnotes: F3

STX transaction Derivative

Restricted Share Unit

Award

Transaction value
Shares: +1,036
Change %
Price: $0.000000^*
Shares after: 1,036
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 1,036
Exercise price: $0.000000
Footnotes: F4

STX transaction Derivative

Restricted Share Unit

Award

Transaction value
Shares: +311
Change %
Price: $0.000000^*
Shares after: 311
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 311
Exercise price: $0.000000
Footnotes: F4

STX transaction Derivative

NQ Stock Option

Award

Transaction value
Shares: +3,788
Change %
Price: $0.000000^*
Shares after: 3,788
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 3,788
Exercise price: $850.24
Footnotes: F5

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

Consists of a grant of Restricted Share Unit (RSU) awarded to the Reporting Person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan (the "2022 Plan") subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on August 20, 2026 and then in equal quarterly installments thereafter.

Footnote F2

Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, 100% of such RSUs vested on the first anniversary of the grant date, August 20, 2026.

Footnote F3

Consists of a grant of RSUs awarded to the Reporting Person under the Plan subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on August 20, 2027 and then in equal quarterly installments thereafter.

Footnote F4

Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, 100% of such RSUs will vest on the first anniversary of the grant date, August 20, 2027.

Footnote F5

Consists of Options awarded to the Reporting Person under the Plan subject to a four-year vesting schedule. Subject to the Reporting Person's continuous employment, such Options vest as to one-quarter of the shares on August 20, 2027 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.