Open-market purchases and sales reported on SEC Forms 4 and 5, with each filing and its footnotes.
Since Oct 3, 2025
Transactions
41
Purchases
0
Sales
41
Purchase value
$0.00
Sale value
$0.00
Values are shares multiplied by reported price when both were supplied, each trade counted once however many filers reported it.
41 rows are listed but not counted: their filed prices fail a plausibility check, or they are not common stock.
Child JasonChief Financial Officer
4Rule 10b5-1 plan disclosed
Filed Sep 23, 2026Period of report Sep 21, 20260001973239-26-000136
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleSep 21, 2026
Ordinary SharesF1F2F3
10,400
$300.00
Not counted
153,442
Direct
Filing footnotes · 3
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2026.
F3Includes 10 ordinary shares acquired under the Arm Holdings plc 2024 Employee Stock Purchase Plan on August 31, 2026.
Filed Aug 31, 2026Period of report Aug 27, 20260001973239-26-000122
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
Sale
Bartels Laura KathleenChief Accounting Officer
4
Filed Jun 4, 2026Period of report Jun 2, 20260001973239-26-000107
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleJun 2, 2026
Ordinary SharesF1F2
11,306
$392.70
Not counted
Abbey WilliamChief Commercial Officer
4
Filed Jun 3, 2026Period of report Jun 1, 20260001973239-26-000105
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleJun 1, 2026
Ordinary SharesF1
2,644
$383.73
Not counted
Abbey WilliamChief Commercial Officer
4
Filed Jun 1, 2026Period of report May 28, 20260001973239-26-000103
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleMay 28, 2026
Ordinary SharesF1F2
4,200
$343.81
Not counted
Abbey WilliamChief Commercial Officer
4
Filed May 26, 2026Period of report May 22, 20260001973239-26-000101
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleMay 22, 2026
Ordinary SharesF1F2
2,300
$305.82
Not counted
Abbey WilliamChief Commercial Officer
4
Filed May 22, 2026Period of report May 21, 20260001973239-26-000091
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleMay 21, 2026
Ordinary SharesF1F2
4,655
$287.03
Not counted
Eaton Charlotte ClaireChief People Officer
4
Filed May 22, 2026Period of report May 21, 20260001973239-26-000089
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleMay 21, 2026
Ordinary SharesF1
2,805
$288.10
Not counted
Eaton Charlotte ClaireChief People Officer
4
Filed May 21, 2026Period of report May 20, 20260001973239-26-000082
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleMay 21, 2026
Ordinary SharesF1F3
4,000
$282.77
Not counted
Abbey WilliamChief Commercial Officer
4
Filed May 21, 2026Period of report May 19, 20260001973239-26-000084
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleMay 20, 2026
Ordinary SharesF1F3
5,069
$257.18
Not counted
Child JasonChief Financial Officer
4Rule 10b5-1 plan disclosed
Filed May 21, 2026Period of report May 20, 20260001533913-26-000009
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
Sale
Collins SpencerChief Legal Officer
4
Filed May 21, 2026Period of report May 19, 20260001973239-26-000086
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleMay 19, 2026
Ordinary SharesF1
40,941
$215.00
Not counted
Grisenthwaite Richard RoyChief Architect
4
Filed May 19, 2026Period of report May 15, 20260001973239-26-000076
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleMay 18, 2026
Ordinary SharesF1F10
24,339
$209.15
Not counted
Abbey WilliamChief Commercial Officer
4Rule 10b5-1 plan disclosed
Filed May 19, 2026Period of report Apr 23, 20260001973239-26-000078
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
Sale
Collins SpencerChief Legal Officer
4
Filed May 13, 2026Period of report May 11, 20260001973239-26-000064
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
SaleMay 11, 2026
Ordinary SharesF1F2
836
$207.77
Not counted
Child JasonChief Financial Officer
4Rule 10b5-1 plan disclosed
Filed Apr 23, 2026Period of report Apr 22, 20260001533913-26-000005
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
Sale
Haas Rene A.Director · Chief Executive Officer
4Rule 10b5-1 plan disclosed
Filed Apr 16, 2026Period of report Apr 14, 20260001973239-26-000056
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
Sale
Haas Rene A.Director · Chief Executive Officer
4Rule 10b5-1 plan disclosed
Filed Mar 27, 2026Period of report Mar 25, 20260001973239-26-000054
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
Sale
Child JasonChief Financial Officer
4Rule 10b5-1 plan disclosed
Filed Mar 27, 2026Period of report Mar 25, 20260001533913-26-000003
Transaction
Security
Shares
Price
ValueValue (shares × price)
Held after
Ownership
Sale
P and S transaction codes only. Grants, gifts, option exercises, tax withholding, and Form 144 notices are not counted as purchases or sales. A row whose filed price fails a plausibility check, or that is not common stock, is listed but left out of the values; a trade reported by several filers is counted once.
Aug 27, 2026
Ordinary SharesF1F2
10,400
$255.33
Not counted
163,832
Direct
Filing footnotes · 2
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2026.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2Represents weighted average sales price. The shares were sold at prices ranging from $392.60 to $393.09. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2Represents weighted average sales price. The shares were sold at prices ranging from $415.52 to $415.58. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2Represents weighted average sales price. The shares were sold at prices ranging from $343.80 to $344.09. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2Represents weighted average sales price. The shares were sold at prices ranging from $305.82 to $305.91. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2Represents weighted average sales price. The shares were sold at prices ranging from $287.02 to $287.15. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2Represents weighted average sales price. The shares were sold at prices ranging from $291.04 to $291.08. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2Represents weighted average sales price. The shares were sold at prices ranging from $252.20 to $252.28. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F3Represents weighted average sales price. The shares were sold at prices ranging from $282.71 to $282.86. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2Represents weighted average sales price. The shares were sold at prices ranging from $224.11 to $224.43. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F3Represents weighted average sales price. The shares were sold at prices ranging from $257.15 to $257.35. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 30, 2025.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F10Represents weighted average sales price. The shares were sold at prices ranging from $209.03 to $209.66. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price
F11This RSU award was granted effective May 15, 2026. 30% will vest on each of May 15, 2027, and May 15, 2028, and the remaining 40% will vest on May 15, 2029, subject to continued service to the Company.
F12This RSU award was granted effective May 15, 2026. 50% will vest on each of May 15, 2028 and May 15, 2029, subject to continued service to the Company.
F2Represents performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the Company.
F3Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
F4This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company.
F5Represents performance-based RSUs granted on May 13, 2024, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
F6This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company.
F7Represents performance-based RSUs granted on May 23, 2023, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
F8This RSU award was granted on May 23, 2023 and vested on May 15, 2026.
F9Ordinary Shares withheld to satisfy tax withholding requirements on vesting of RSUs.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F10Represents weighted average sales price. The shares were sold at prices ranging from $212.51 to $212.76. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F11The Reporting Person is hereby disclosing delinquent transactions reportable on Form 4 that were not reported due to an inadvertent oversight. These shares were sold pursuant to a 10b5-1 trading plan.
F12This RSU award was granted effective May 15, 2026. 30% will vest on each of May 15, 2027, and May 15, 2028, and the remaining 40% will vest on May 15, 2029, subject to continued service to the Company.
F2Represents performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the Company.
F3Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
F4This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company.
F5Represents performance-based RSUs granted on May 13, 2024, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
F6This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company.
F7Represents performance-based RSUs granted on May 23, 2023, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
F8This RSU award was granted on May 23, 2023 and vested on May 15, 2026.
F9Ordinary Shares withheld to satisfy tax withholding requirements on vesting of RSUs.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2Represents weighted average sales price. The shares were sold at prices ranging from $207.01 to $207.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F3Represents weighted average sales price. The shares were sold at prices ranging from $208.16 to $208.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F4Represents weighted average sales price. The shares were sold at prices ranging from $209.00 to $209.95. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F5Represents weighted average sales price. The shares were sold at prices ranging from $210.00 to $210.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F6Represents weighted average sales price. The shares were sold at prices ranging from $211.00 to $211.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F7Represents weighted average sales price. The shares were sold at prices ranging from $212.00 to $212.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F8Represents weighted average sales price. The shares were sold at prices ranging from $213.00 to $213.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F9Represents weighted average sales price. The shares were sold at prices ranging from $214.00 to $214.94. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 30, 2025.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 11, 2025.
F3Represents weighted average sales price. The shares were sold at prices ranging from $160.00 to $160.96. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F4Represents weighted average sales price. The shares were sold at prices ranging from $161.00 to $161.91. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F5Represents weighted average sales price. The shares were sold at prices ranging from $162.99 to $163.01. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 11, 2025.
F3Represents weighted average sales price. The shares were sold at prices ranging from $163.14 to $163.58. The reporting person will provide upon request, to the Securities and Exchange Commission (the "SEC"), the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F4Represents weighted average sales price. The shares were sold at prices ranging from $162.10 to $163.06. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F5Represents weighted average sales price. The shares were sold at prices ranging from $161.00 to $161.96. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F6Represents weighted average sales price. The shares were sold at prices ranging from $160.00 to $160.83. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F7Represents weighted average sales price. The shares were sold at prices ranging from $163.14 to $163.15. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F8Represents weighted average sales price. The shares were sold at prices ranging from $162.08 to $162.37. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F9Represents weighted average sales price. The shares were sold at prices ranging from $160.00 to $160.99. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F1Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
F2The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 30, 2025.