STX Filing
4Filing Date: Aug 4, 2026

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

Statement of Changes in Beneficial Ownership

descriptionView SEC Filing
ACC: 0001137789-26-000163open_in_new
Total Value$11.03M
Trades31
Insiders1

Transaction Details

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-160
Price$787.77
Total Value$126.0K
Shares Owned After325.24K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $787.71 to $787.79. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-711
Price$792.72
Total Value$563.6K
Shares Owned After323.97K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $792.17 to $793.13. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-697
Price$808.72
Total Value$563.7K
Shares Owned After316.38K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $808.18 to $809.09. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-400
Price$812.84
Total Value$325.1K
Shares Owned After314.44K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $812.39 to $813.20. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-320
Price$818.32
Total Value$261.9K
Shares Owned After312.60K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $817.74 to $818.58. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Exercise · Acquire
Ordinary Shares
Shares+14.00K
Price$46.23
Total Value$647.2K
Shares Owned After325.52K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 18, 2026.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-40
Price$786.12
Total Value$31.4K
Shares Owned After325.40K
Transaction DateAug 3, 2026
10b5-1
MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-440
Price$790.98
Total Value$348.0K
Shares Owned After324.68K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $790.50 to $791.22. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-368
Price$794.39
Total Value$292.3K
Shares Owned After323.12K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $794.22 to $795.04. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-480
Price$799.27
Total Value$383.6K
Shares Owned After320.64K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $798.60 to $799.58. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-520
Price$800.08
Total Value$416.0K
Shares Owned After320.12K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $799.64 to $800.58. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-520
Price$803.73
Total Value$417.9K
Shares Owned After318.84K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $803.19 to $804.17. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-280
Price$807.65
Total Value$226.1K
Shares Owned After317.08K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $807.14 to $807.99. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-640
Price$811.82
Total Value$519.6K
Shares Owned After314.84K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $811.38 to $812.36. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-80
Price$783.84
Total Value$62.7K
Shares Owned After325.44K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $783.83 to $783.84. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-120
Price$789.55
Total Value$94.7K
Shares Owned After325.12K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $789.02 to $789.84. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-480
Price$793.70
Total Value$381.0K
Shares Owned After323.49K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $793.19 to $794.18. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-680
Price$797.04
Total Value$542.0K
Shares Owned After321.68K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $796.39 to $797.35. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-560
Price$797.85
Total Value$446.8K
Shares Owned After321.12K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $797.41 to $798.36. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-360
Price$802.08
Total Value$288.7K
Shares Owned After319.36K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $801.71 to $802.65. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-640
Price$806.47
Total Value$516.1K
Shares Owned After317.36K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $806.12 to $807.01. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-520
Price$810.44
Total Value$421.4K
Shares Owned After315.48K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $810.20 to $811.08. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-366
Price$814.07
Total Value$298.0K
Shares Owned After314.07K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $813.42 to $814.40. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-320
Price$815.87
Total Value$261.1K
Shares Owned After313.36K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $815.65 to $816.17. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-440
Price$817.17
Total Value$359.6K
Shares Owned After312.92K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $816.65 to $817.59. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-761
Price$795.81
Total Value$605.6K
Shares Owned After322.36K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $795.32 to $796.19. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-400
Price$801.04
Total Value$320.4K
Shares Owned After319.72K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $800.70 to $801.31. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-840
Price$804.73
Total Value$676.0K
Shares Owned After318.00K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $804.38 to $805.19. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-383
Price$809.71
Total Value$310.1K
Shares Owned After316.00K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $809.20 to $810.08. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Sell · Dispose
Ordinary Shares
Shares-394
Price$814.99
Total Value$321.1K
Shares Owned After313.68K
Transaction DateAug 3, 2026
10b5-1
Footnotes ▸

These Ordinary Shares were sold in multiple trades at prices ranging from $814.43 to $815.31. 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.

MOSLEY WILLIAM D
CEO, Director·Direct
Exercise · Dispose
NQ OptionsDerivative
Shares-14.00K
Price$0.00
Total Value$0
Shares Owned After111.10K
Transaction DateAug 3, 2026
ExpiresSep 9, 2027
10b5-1
Footnotes ▸

Options granted to the Reporting Person under the Issuer's 2012 Equity Incentive Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the option shares vested on September 9, 2021. The remaining option shares vest in equal monthly installments over the 36 months following September 9, 2021.

Post-Transaction Holdings

MOSLEY WILLIAM D
SecuritySharesChange
NQ Options111.10K-14.00K (-11.19%)
Ordinary Shares325.24K+1.08K (0.33%)
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-03 10b5-1 Pre-arranged Plan: Yes --- 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: 2026-08-03 | Code: M (Exercise of derivative) Shares: +14,000 | Price: $46.23 Total Value: $647,220.00 Shares Owned After: 325,517 | Ownership: D (Direct) Footnotes: [F1] All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 18, 2026. [Transaction #2] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -80 | Price: $783.84 Total Value: $62,706.80 Shares Owned After: 325,437 | Ownership: D (Direct) Footnotes: [F2] These Ordinary Shares were sold in multiple trades at prices ranging from $783.83 to $783.84. 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. [Transaction #3] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -40 | Price: $786.12 Total Value: $31,444.80 Shares Owned After: 325,397 | Ownership: D (Direct) [Transaction #4] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -160 | Price: $787.77 Total Value: $126,042.80 Shares Owned After: 325,237 | Ownership: D (Direct) Footnotes: [F3] These Ordinary Shares were sold in multiple trades at prices ranging from $787.71 to $787.79. 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. [Transaction #5] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -120 | Price: $789.55 Total Value: $94,745.60 Shares Owned After: 325,117 | Ownership: D (Direct) Footnotes: [F4] These Ordinary Shares were sold in multiple trades at prices ranging from $789.02 to $789.84. 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. [Transaction #6] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -440 | Price: $790.98 Total Value: $348,032.39 Shares Owned After: 324,677 | Ownership: D (Direct) Footnotes: [F5] These Ordinary Shares were sold in multiple trades at prices ranging from $790.50 to $791.22. 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. [Transaction #7] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -711 | Price: $792.72 Total Value: $563,625.98 Shares Owned After: 323,966 | Ownership: D (Direct) Footnotes: [F6] These Ordinary Shares were sold in multiple trades at prices ranging from $792.17 to $793.13. 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. [Transaction #8] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -480 | Price: $793.70 Total Value: $380,977.20 Shares Owned After: 323,486 | Ownership: D (Direct) Footnotes: [F7] These Ordinary Shares were sold in multiple trades at prices ranging from $793.19 to $794.18. 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. [Transaction #9] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -368 | Price: $794.39 Total Value: $292,334.53 Shares Owned After: 323,118 | Ownership: D (Direct) Footnotes: [F8] These Ordinary Shares were sold in multiple trades at prices ranging from $794.22 to $795.04. 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. [Transaction #10] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -761 | Price: $795.81 Total Value: $605,614.99 Shares Owned After: 322,357 | Ownership: D (Direct) Footnotes: [F9] These Ordinary Shares were sold in multiple trades at prices ranging from $795.32 to $796.19. 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. [Transaction #11] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -680 | Price: $797.04 Total Value: $541,989.58 Shares Owned After: 321,677 | Ownership: D (Direct) Footnotes: [F10] These Ordinary Shares were sold in multiple trades at prices ranging from $796.39 to $797.35. 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. [Transaction #12] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -560 | Price: $797.85 Total Value: $446,794.82 Shares Owned After: 321,117 | Ownership: D (Direct) Footnotes: [F11] These Ordinary Shares were sold in multiple trades at prices ranging from $797.41 to $798.36. 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. [Transaction #13] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -480 | Price: $799.27 Total Value: $383,648.40 Shares Owned After: 320,637 | Ownership: D (Direct) Footnotes: [F12] These Ordinary Shares were sold in multiple trades at prices ranging from $798.60 to $799.58. 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. [Transaction #14] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -520 | Price: $800.08 Total Value: $416,040.82 Shares Owned After: 320,117 | Ownership: D (Direct) Footnotes: [F13] These Ordinary Shares were sold in multiple trades at prices ranging from $799.64 to $800.58. 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. [Transaction #15] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -400 | Price: $801.04 Total Value: $320,418.00 Shares Owned After: 319,717 | Ownership: D (Direct) Footnotes: [F14] These Ordinary Shares were sold in multiple trades at prices ranging from $800.70 to $801.31. 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. [Transaction #16] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -360 | Price: $802.08 Total Value: $288,749.99 Shares Owned After: 319,357 | Ownership: D (Direct) Footnotes: [F15] These Ordinary Shares were sold in multiple trades at prices ranging from $801.71 to $802.65. 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. [Transaction #17] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -520 | Price: $803.73 Total Value: $417,938.82 Shares Owned After: 318,837 | Ownership: D (Direct) Footnotes: [F16] These Ordinary Shares were sold in multiple trades at prices ranging from $803.19 to $804.17. 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. [Transaction #18] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -840 | Price: $804.73 Total Value: $675,975.22 Shares Owned After: 317,997 | Ownership: D (Direct) Footnotes: [F17] These Ordinary Shares were sold in multiple trades at prices ranging from $804.38 to $805.19. 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. [Transaction #19] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -640 | Price: $806.47 Total Value: $516,138.82 Shares Owned After: 317,357 | Ownership: D (Direct) Footnotes: [F18] These Ordinary Shares were sold in multiple trades at prices ranging from $806.12 to $807.01. 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. [Transaction #20] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -280 | Price: $807.65 Total Value: $226,141.61 Shares Owned After: 317,077 | Ownership: D (Direct) Footnotes: [F19] These Ordinary Shares were sold in multiple trades at prices ranging from $807.14 to $807.99. 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. [Transaction #21] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -697 | Price: $808.72 Total Value: $563,681.19 Shares Owned After: 316,380 | Ownership: D (Direct) Footnotes: [F20] These Ordinary Shares were sold in multiple trades at prices ranging from $808.18 to $809.09. 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. [Transaction #22] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -383 | Price: $809.71 Total Value: $310,118.70 Shares Owned After: 315,997 | Ownership: D (Direct) Footnotes: [F21] These Ordinary Shares were sold in multiple trades at prices ranging from $809.20 to $810.08. 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. [Transaction #23] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -520 | Price: $810.44 Total Value: $421,426.82 Shares Owned After: 315,477 | Ownership: D (Direct) Footnotes: [F22] These Ordinary Shares were sold in multiple trades at prices ranging from $810.20 to $811.08. 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. [Transaction #24] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -640 | Price: $811.82 Total Value: $519,563.46 Shares Owned After: 314,837 | Ownership: D (Direct) Footnotes: [F23] These Ordinary Shares were sold in multiple trades at prices ranging from $811.38 to $812.36. 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. [Transaction #25] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -400 | Price: $812.84 Total Value: $325,134.40 Shares Owned After: 314,437 | Ownership: D (Direct) Footnotes: [F24] These Ordinary Shares were sold in multiple trades at prices ranging from $812.39 to $813.20. 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. [Transaction #26] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -366 | Price: $814.07 Total Value: $297,951.23 Shares Owned After: 314,071 | Ownership: D (Direct) Footnotes: [F25] These Ordinary Shares were sold in multiple trades at prices ranging from $813.42 to $814.40. 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. [Transaction #27] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -394 | Price: $814.99 Total Value: $321,106.81 Shares Owned After: 313,677 | Ownership: D (Direct) Footnotes: [F26] These Ordinary Shares were sold in multiple trades at prices ranging from $814.43 to $815.31. 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. [Transaction #28] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -320 | Price: $815.87 Total Value: $261,079.20 Shares Owned After: 313,357 | Ownership: D (Direct) Footnotes: [F27] These Ordinary Shares were sold in multiple trades at prices ranging from $815.65 to $816.17. 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. [Transaction #29] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -440 | Price: $817.17 Total Value: $359,554.01 Shares Owned After: 312,917 | Ownership: D (Direct) Footnotes: [F28] These Ordinary Shares were sold in multiple trades at prices ranging from $816.65 to $817.59. 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. [Transaction #30] Security: Ordinary Shares Date: 2026-08-03 | Code: S (Open market sale) Shares: -320 | Price: $818.32 Total Value: $261,860.80 Shares Owned After: 312,597 | Ownership: D (Direct) Footnotes: [F29] These Ordinary Shares were sold in multiple trades at prices ranging from $817.74 to $818.58. 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. --- Derivative Transactions --- [Transaction #1] Security: NQ Options Date: 2026-08-03 | Code: M (Exercise of derivative) Shares: -14,000 | Price: $0.00 Exercisable: N/A | Expires: 2027-09-09 Shares Owned After: 111,100 | Ownership: D (Direct) Footnotes: [F30] Options granted to the Reporting Person under the Issuer's 2012 Equity Incentive Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the option shares vested on September 9, 2021. The remaining option shares vest in equal monthly installments over the 36 months following September 9, 2021. --- Footnotes (Complete Index) --- F1: All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 18, 2026. F10: These Ordinary Shares were sold in multiple trades at prices ranging from $796.39 to $797.35. 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. F11: These Ordinary Shares were sold in multiple trades at prices ranging from $797.41 to $798.36. 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. F12: These Ordinary Shares were sold in multiple trades at prices ranging from $798.60 to $799.58. 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. F13: These Ordinary Shares were sold in multiple trades at prices ranging from $799.64 to $800.58. 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. F14: These Ordinary Shares were sold in multiple trades at prices ranging from $800.70 to $801.31. 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. F15: These Ordinary Shares were sold in multiple trades at prices ranging from $801.71 to $802.65. 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. F16: These Ordinary Shares were sold in multiple trades at prices ranging from $803.19 to $804.17. 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. F17: These Ordinary Shares were sold in multiple trades at prices ranging from $804.38 to $805.19. 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. F18: These Ordinary Shares were sold in multiple trades at prices ranging from $806.12 to $807.01. 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. F19: These Ordinary Shares were sold in multiple trades at prices ranging from $807.14 to $807.99. 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. F2: These Ordinary Shares were sold in multiple trades at prices ranging from $783.83 to $783.84. 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. F20: These Ordinary Shares were sold in multiple trades at prices ranging from $808.18 to $809.09. 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. F21: These Ordinary Shares were sold in multiple trades at prices ranging from $809.20 to $810.08. 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. F22: These Ordinary Shares were sold in multiple trades at prices ranging from $810.20 to $811.08. 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. F23: These Ordinary Shares were sold in multiple trades at prices ranging from $811.38 to $812.36. 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. F24: These Ordinary Shares were sold in multiple trades at prices ranging from $812.39 to $813.20. 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. F25: These Ordinary Shares were sold in multiple trades at prices ranging from $813.42 to $814.40. 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. F26: These Ordinary Shares were sold in multiple trades at prices ranging from $814.43 to $815.31. 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. F27: These Ordinary Shares were sold in multiple trades at prices ranging from $815.65 to $816.17. 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. F28: These Ordinary Shares were sold in multiple trades at prices ranging from $816.65 to $817.59. 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. F29: These Ordinary Shares were sold in multiple trades at prices ranging from $817.74 to $818.58. 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. F3: These Ordinary Shares were sold in multiple trades at prices ranging from $787.71 to $787.79. 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. F30: Options granted to the Reporting Person under the Issuer's 2012 Equity Incentive Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the option shares vested on September 9, 2021. The remaining option shares vest in equal monthly installments over the 36 months following September 9, 2021. F4: These Ordinary Shares were sold in multiple trades at prices ranging from $789.02 to $789.84. 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. F5: These Ordinary Shares were sold in multiple trades at prices ranging from $790.50 to $791.22. 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. F6: These Ordinary Shares were sold in multiple trades at prices ranging from $792.17 to $793.13. 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. F7: These Ordinary Shares were sold in multiple trades at prices ranging from $793.19 to $794.18. 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. F8: These Ordinary Shares were sold in multiple trades at prices ranging from $794.22 to $795.04. 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. F9: These Ordinary Shares were sold in multiple trades at prices ranging from $795.32 to $796.19. 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. --- Signature --- /s/ /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley (2026-08-04)

keid analysis is for reference only and does not constitute investment advice.