Ban Seng Teh - 14 Sep 2026 Form 4 Insider Report for Seagate Technology Holdings plc (STX)

Reporting relationship: EVP & Chief Commercial Officer
Issuer ticker: STX
Reported as of: 14 Sep 2026
Net transaction value: -$41,239,128
SEC form: 4
Accepted by SEC: 16 Sep 2026, 16:10:16 UTC
Prior SEC filing: 15 Sep 2026
Source filing: View source filing
Reporting owner signature: /s/ Louis J. Thorson, Attorney-in-Fact for Ban Seng Teh

Key filing fact

Ban Seng Teh filed Form 4 for Seagate Technology Holdings plc (STX) on 16 Sep 2026.

Key facts

This page summarizes Ban Seng Teh's Form 4 filing for Seagate Technology Holdings plc (STX).
26 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 16 Sep 2026, 16:10.

Change

Previous filing in this sequence was filed on 15 Sep 2026.
Current net transaction value: -$41,239,128.

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 0001801425 Primary reporting owner

Teh Ban Seng

Relationship: EVP & Chief Commercial Officer
Address: SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT
Signature: /s/ Louis J. Thorson, Attorney-in-Fact for Ban Seng Teh
Signature date: 16 Sep 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: +52,730
Change %: +908%
Price: $0.000000^*
Shares after: 58,540
Date: 14 Sep 2026
Ownership: Direct
Footnotes: F1

STX transaction

Ordinary Shares

Sale

Transaction value: $705,037
Shares: -914
Change %: -1.6%
Price: $771.38
Shares after: 57,626
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F2, F3

STX transaction

Ordinary Shares

Sale

Transaction value: $2,666,428
Shares: -3,451
Change %: -6%
Price: $772.65
Shares after: 54,175
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F4

STX transaction

Ordinary Shares

Sale

Transaction value: $1,328,982
Shares: -1,717
Change %: -3.2%
Price: $774.01
Shares after: 52,458
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F5

STX transaction

Ordinary Shares

Sale

Transaction value: $1,794,159
Shares: -2,315
Change %: -4.4%
Price: $775.01
Shares after: 50,143
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F6

STX transaction

Ordinary Shares

Sale

Transaction value: $2,516,430
Shares: -3,242
Change %: -6.5%
Price: $776.20
Shares after: 46,901
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F7

STX transaction

Ordinary Shares

Sale

Transaction value: $3,098,765
Shares: -3,987
Change %: -8.5%
Price: $777.22
Shares after: 42,914
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F8

STX transaction

Ordinary Shares

Sale

Transaction value: $5,650,017
Shares: -7,259
Change %: -17%
Price: $778.35
Shares after: 35,655
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F9

STX transaction

Ordinary Shares

Sale

Transaction value: $5,207,051
Shares: -6,682
Change %: -19%
Price: $779.27
Shares after: 28,973
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F10

STX transaction

Ordinary Shares

Sale

Transaction value: $1,914,063
Shares: -2,453
Change %: -8.5%
Price: $780.29
Shares after: 26,520
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F11

STX transaction

Ordinary Shares

Sale

Transaction value: $1,250,157
Shares: -1,600
Change %: -6%
Price: $781.35
Shares after: 24,920
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F12

STX transaction

Ordinary Shares

Sale

Transaction value: $3,245,295
Shares: -4,147
Change %: -17%
Price: $782.56
Shares after: 20,773
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F13

STX transaction

Ordinary Shares

Sale

Transaction value: $1,378,568
Shares: -1,760
Change %: -8.5%
Price: $783.28
Shares after: 19,013
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F14

STX transaction

Ordinary Shares

Sale

Transaction value: $784,446
Shares: -1,000
Change %: -5.3%
Price: $784.45
Shares after: 18,013
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F15

STX transaction

Ordinary Shares

Sale

Transaction value: $817,588
Shares: -1,040
Change %: -5.8%
Price: $786.14
Shares after: 16,973
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F16

STX transaction

Ordinary Shares

Sale

Transaction value: $94,471
Shares: -120
Change %: -0.71%
Price: $787.26
Shares after: 16,853
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F17

STX transaction

Ordinary Shares

Sale

Transaction value: $220,760
Shares: -280
Change %: -1.7%
Price: $788.43
Shares after: 16,573
Date: 15 Sep 2026
Ownership: Direct

STX transaction

Ordinary Shares

Sale

Transaction value: $1,390,119
Shares: -1,760
Change %: -11%
Price: $789.84
Shares after: 14,813
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F18

STX transaction

Ordinary Shares

Sale

Transaction value: $443,164
Shares: -560
Change %: -3.8%
Price: $791.36
Shares after: 14,253
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F19

STX transaction

Ordinary Shares

Sale

Transaction value: $1,017,238
Shares: -1,280
Change %: -9%
Price: $794.72
Shares after: 12,973
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F20

STX transaction

Ordinary Shares

Sale

Transaction value: $1,724,018
Shares: -2,166
Change %: -17%
Price: $795.95
Shares after: 10,807
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F21

STX transaction

Ordinary Shares

Sale

Transaction value: $1,264,673
Shares: -1,587
Change %: -15%
Price: $796.90
Shares after: 9,220
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F22

STX transaction

Ordinary Shares

Sale

Transaction value: $422,925
Shares: -530
Change %: -5.7%
Price: $797.97
Shares after: 8,690
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F23

STX transaction

Ordinary Shares

Sale

Transaction value: $319,611
Shares: -400
Change %: -4.6%
Price: $799.03
Shares after: 8,290
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F24

STX transaction

Ordinary Shares

Sale

Transaction value: $1,985,166
Shares: -2,480
Change %: -30%
Price: $800.47
Shares after: 5,810
Date: 15 Sep 2026
Ownership: Direct

Reported derivative securities

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

STX transaction Derivative

Performance-Based Restricted Share Units

Options Exercise

Transaction value
Shares: -52,730
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 14 Sep 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 52,730
Exercise price: $0.000000
Footnotes: F25

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 25 footnotes

Footnote F1

Represents Ordinary Shares issued upon the vesting and settlement of Performance Share Units granted on September 11, 2023, following certification by the Compensation and People Committee of the achievement of the applicable performance conditions.

Footnote F2

All sale transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on Febuary 11, 2026.

Footnote F3

These Ordinary Shares were sold in multiple trades at prices ranging from $771.15 to $772.08. 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.

Footnote F4

These Ordinary Shares were sold in multiple trades at prices ranging from $772.19 to $773.14. 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.

Footnote F5

These Ordinary Shares were sold in multiple trades at prices ranging from $773.34 to $774.29. 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.

Footnote F6

These Ordinary Shares were sold in multiple trades at prices ranging from $774.71 to $775.70. 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.

Footnote F7

These Ordinary Shares were sold in multiple trades at prices ranging from $775.78 to $776.75. 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.

Footnote F8

These Ordinary Shares were sold in multiple trades at prices ranging from $776.80 to $777.76. 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.

Footnote F9

These Ordinary Shares were sold in multiple trades at prices ranging from $777.89 to $778.88. 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.

Footnote F10

These Ordinary Shares were sold in multiple trades at prices ranging from $778.95 to $779.94. 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.

Footnote F11

These Ordinary Shares were sold in multiple trades at prices ranging from $779.95 to $780.87. 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.

Footnote F12

These Ordinary Shares were sold in multiple trades at prices ranging from $780.99 to $781.88. 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.

Footnote F13

These Ordinary Shares were sold in multiple trades at prices ranging from $782.00 to $782.88. 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.

Footnote F14

These Ordinary Shares were sold in multiple trades at prices ranging from $783.00 to $783.78. 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.

Footnote F15

These Ordinary Shares were sold in multiple trades at prices ranging from $784.00 to $784.75. 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.

Footnote F16

These Ordinary Shares were sold in multiple trades at prices ranging from $785.75 to $786.61. 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.

Footnote F17

These Ordinary Shares were sold in multiple trades at prices ranging from $787.05 to $787.36. 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.

Footnote F18

These Ordinary Shares were sold in multiple trades at prices ranging from $789.56 to $790.43. 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.

Footnote F19

These Ordinary Shares were sold in multiple trades at prices ranging from $791.01 to $791.98. 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.

Footnote F20

These Ordinary Shares were sold in multiple trades at prices ranging from $794.18 to $794.99. 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.

Footnote F21

These Ordinary Shares were sold in multiple trades at prices ranging from $795.65 to $796.62. 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.

Footnote F22

These Ordinary Shares were sold in multiple trades at prices ranging from $796.68 to $797.48. 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.

Footnote F23

These Ordinary Shares were sold in multiple trades at prices ranging from $797.92 to $798.08. 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.

Footnote F24

These Ordinary Shares were sold in multiple trades at prices ranging from $799.02 to $799.03. 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.

Footnote F25

Performance Share Units granted on September 11, 2023 vested and were settled in Ordinary Shares upon certification of the applicable performance conditions by the Compensation and People Committee.