James C. Lee - 24 Aug 2026 Form 4 Insider Report for Seagate Technology Holdings plc (STX)

Reporting relationship: EVP & CLO
Issuer ticker: STX
Reported as of: 24 Aug 2026
Net transaction value: -$7,163,926
SEC form: 4
Accepted by SEC: 26 Aug 2026, 16:21:52 UTC
Prior SEC filing: 24 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Louis J. Thorson, Attorney-in-fact for James C. Lee

Key filing fact

James C. Lee filed Form 4 for Seagate Technology Holdings plc (STX) on 26 Aug 2026.

Key facts

This page summarizes James C. Lee's Form 4 filing for Seagate Technology Holdings plc (STX).
31 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 26 Aug 2026, 16:21.

Change

Previous filing in this sequence was filed on 24 Aug 2026.
Current net transaction value: -$7,163,926.

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 0001773423 Primary reporting owner

Lee James CI

Relationship: EVP & CLO
Address: SEAGATE TECHNOLOGY PLC, 47488 KATO ROAD, FREMONT
Signature: /s/ Louis J. Thorson, Attorney-in-fact for James C. Lee
Signature date: 26 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: +4,032
Change %: +76%
Price: $158.40^*
Shares after: 9,360
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F1

STX transaction

Ordinary Shares

Sale

Transaction value: $30,994
Shares: -40
Change %: -0.43%
Price: $774.84
Shares after: 9,320
Date: 24 Aug 2026
Ownership: Direct

STX transaction

Ordinary Shares

Sale

Transaction value: $86,927
Shares: -112
Change %: -1.2%
Price: $776.14
Shares after: 9,208
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F2

STX transaction

Ordinary Shares

Sale

Transaction value: $6,216
Shares: -8
Change %: -0.09%
Price: $777.05
Shares after: 9,200
Date: 24 Aug 2026
Ownership: Direct

STX transaction

Ordinary Shares

Sale

Transaction value: $62,280
Shares: -80
Change %: -0.87%
Price: $778.50
Shares after: 9,120
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F3

STX transaction

Ordinary Shares

Sale

Transaction value: $124,906
Shares: -160
Change %: -1.8%
Price: $780.66
Shares after: 8,960
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F4

STX transaction

Ordinary Shares

Sale

Transaction value: $219,052
Shares: -280
Change %: -3.1%
Price: $782.33
Shares after: 8,680
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F5

STX transaction

Ordinary Shares

Sale

Transaction value: $219,317
Shares: -280
Change %: -3.2%
Price: $783.28
Shares after: 8,400
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F6

STX transaction

Ordinary Shares

Sale

Transaction value: $94,160
Shares: -120
Change %: -1.4%
Price: $784.66
Shares after: 8,280
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F7

STX transaction

Ordinary Shares

Sale

Transaction value: $188,705
Shares: -240
Change %: -2.9%
Price: $786.27
Shares after: 8,040
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F8

STX transaction

Ordinary Shares

Sale

Transaction value: $157,606
Shares: -200
Change %: -2.5%
Price: $788.03
Shares after: 7,840
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F9

STX transaction

Ordinary Shares

Sale

Transaction value: $441,981
Shares: -560
Change %: -7.1%
Price: $789.25
Shares after: 7,280
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F10

STX transaction

Ordinary Shares

Sale

Transaction value: $221,296
Shares: -280
Change %: -3.8%
Price: $790.34
Shares after: 7,000
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F11

STX transaction

Ordinary Shares

Sale

Transaction value: $348,392
Shares: -440
Change %: -6.3%
Price: $791.80
Shares after: 6,560
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F12

STX transaction

Ordinary Shares

Sale

Transaction value: $95,086
Shares: -120
Change %: -1.8%
Price: $792.39
Shares after: 6,440
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F13

STX transaction

Ordinary Shares

Sale

Transaction value: $380,957
Shares: -480
Change %: -7.5%
Price: $793.66
Shares after: 5,960
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F14

STX transaction

Ordinary Shares

Sale

Transaction value: $769,335
Shares: -968
Change %: -16%
Price: $794.77
Shares after: 4,992
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F15

STX transaction

Ordinary Shares

Sale

Transaction value: $672,533
Shares: -845
Change %: -17%
Price: $795.90
Shares after: 4,147
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F16

STX transaction

Ordinary Shares

Sale

Transaction value: $478,432
Shares: -600
Change %: -14%
Price: $797.39
Shares after: 3,547
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F17

STX transaction

Ordinary Shares

Sale

Transaction value: $479,095
Shares: -600
Change %: -17%
Price: $798.49
Shares after: 2,947
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F18

STX transaction

Ordinary Shares

Sale

Transaction value: $453,281
Shares: -567
Change %: -19%
Price: $799.44
Shares after: 2,380
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F19

STX transaction

Ordinary Shares

Sale

Transaction value: $384,200
Shares: -480
Change %: -20%
Price: $800.42
Shares after: 1,900
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F20

STX transaction

Ordinary Shares

Sale

Transaction value: $160,320
Shares: -200
Change %: -11%
Price: $801.60
Shares after: 1,700
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F21

STX transaction

Ordinary Shares

Sale

Transaction value: $475,981
Shares: -593
Change %: -35%
Price: $802.67
Shares after: 1,107
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F22

STX transaction

Ordinary Shares

Sale

Transaction value: $353,572
Shares: -440
Change %: -40%
Price: $803.57
Shares after: 667
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F23

STX transaction

Ordinary Shares

Sale

Transaction value: $64,389
Shares: -80
Change %: -12%
Price: $804.86
Shares after: 587
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F24

STX transaction

Ordinary Shares

Sale

Transaction value: $97,153
Shares: -120
Change %: -20%
Price: $809.61
Shares after: 467
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F25

STX transaction

Ordinary Shares

Sale

Transaction value: $32,509
Shares: -40
Change %: -8.6%
Price: $812.72
Shares after: 427
Date: 24 Aug 2026
Ownership: Direct

STX transaction

Ordinary Shares

Sale

Transaction value: $32,571
Shares: -40
Change %: -9.4%
Price: $814.27
Shares after: 387
Date: 24 Aug 2026
Ownership: Direct

STX transaction

Ordinary Shares

Sale

Transaction value: $32,678
Shares: -40
Change %: -10%
Price: $816.96
Shares after: 347
Date: 24 Aug 2026
Ownership: Direct

Reported derivative securities

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

STX transaction Derivative

NQ Stock Option

Options Exercise

Transaction value
Shares: -4,032
Change %: -25%
Price: $0.000000^*
Shares after: 12,096
Date: 24 Aug 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 4,032
Exercise price: $158.40
Footnotes: F26

^* 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 26 footnotes

Footnote F1

All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on January 29, 2026.

Footnote F2

These Ordinary Shares were sold in multiple trades at prices ranging from $775.85 to $776.34. 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 F3

These Ordinary Shares were sold in multiple trades at prices ranging from $778.17 to $778.84. 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 $780.26 to $780.94. 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 F5

These Ordinary Shares were sold in multiple trades at prices ranging from $781.83 to $782.80. 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 $783.07 to $783.46. 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 $784.24 to $785.07. 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 $785.80 to $786.77. 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 $787.74 to $788.18. 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 $788.77 to $789.73. 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 $790.15 to $790.83. 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 $791.17 to $792.16. 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 $792.17 to $792.73. 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 $793.25 to $794.22. 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 $794.29 to $795.25. 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 $795.44 to $796.43. 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 F17

These Ordinary Shares were sold in multiple trades at prices ranging from $796.96 to $797.94. 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 F18

These Ordinary Shares were sold in multiple trades at prices ranging from $798.03 to $799.01. 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 $799.08 to $800.07. 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 $800.14 to $800.78. 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 F21

These Ordinary Shares were sold in multiple trades at prices ranging from $801.17 to $802.16. 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 $802.18 to $803.15. 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 $803.26 to $804.19. 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 $804.85 to $804.88. 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 F25

These Ordinary Shares were sold in multiple trades at prices ranging from $809.49 to $809.85. 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 F26

Options granted to the Reporting Person under the Seagate Technology plc 2022 Equity Incentive Plan the ("Plan") are subject to a four-year vesting schedule. Subject to continuous employment, 25% shall vest on August 20, 2026 and the remaining portion shall vest in equal monthly installments over the following three years for a total vesting period of four years.