ARM

Chief Accounting Officer Bartels Laura Kathleen sold $4,439,866 worth of Ordinary Shares (11,306 units at $392.70), decreasing direct ownership by 48% to 12,135 units (SEC Form 4)

Chief Commercial Officer Abbey William sold $2,644,252 worth of Ordinary Shares (6,566 units at $402.72), decreasing direct ownership by 24% to 20,563 units (SEC Form 4)

Chief Commercial Officer Abbey William sold $1,444,002 worth of Ordinary Shares (4,200 units at $343.81), decreasing direct ownership by 13% to 27,129 units (SEC Form 4)

Chief Commercial Officer Abbey William sold $703,386 worth of Ordinary Shares (2,300 units at $305.82), decreasing direct ownership by 7% to 31,329 units (SEC Form 4)

SEC Form SD filed by Arm Holdings plc

SEC Form IRANNOTICE filed by Arm Holdings plc

SEC Form 20-F filed by Arm Holdings plc

Chief Commercial Officer Abbey William sold $1,336,125 worth of Ordinary Shares (4,655 units at $287.03), decreasing direct ownership by 12% to 33,629 units (SEC Form 4)

Chief People Officer Eaton Charlotte Claire sold $2,263,520 worth of Ordinary Shares (7,805 units at $290.01), closing all direct ownership in the company (SEC Form 4)

Chief Legal Officer Collins Spencer sold $8,802,315 worth of Ordinary Shares (40,941 units at $215.00), closing all direct ownership in the company (SEC Form 4)

Chief Commercial Officer Abbey William sold $3,743,858 worth of Ordinary Shares (15,956 units at $234.64), decreasing direct ownership by 29% to 38,284 units (SEC Form 4)

Chief Financial Officer Child Jason sold $7,231,157 worth of Ordinary Shares (31,920 units at $226.54) as part of a pre-agreed trading plan, decreasing direct ownership by 15% to 174,232 units (SEC Form 4)

Chief People Officer Eaton Charlotte Claire sold $1,913,055 worth of Ordinary Shares (7,100 units at $269.44), decreasing direct ownership by 48% to 7,805 units (SEC Form 4)

SEC Form 144 filed by Arm Holdings plc

Chief Accounting Officer Bartels Laura Kathleen converted options into 6,758 units of Ordinary Shares and covered exercise/tax liability with 3,383 units of Ordinary Shares, increasing direct ownership by 17% to 23,441 units (SEC Form 4) (for tax liability)

Chief Commercial Officer Abbey William was granted 23,310 units of Ordinary Shares, converted options into 8,200 units of Ordinary Shares, covered exercise/tax liability with 15,317 units of Ordinary Shares and sold $2,151,751 worth of Ordinary Shares (10,154 units at $211.91) as part of a pre-agreed trading plan, increasing direct ownership by 13% to 54,240 units (SEC Form 4) to satisfy withholding tax

Chief Architect Grisenthwaite Richard Roy covered exercise/tax liability with 21,301 units of Ordinary Shares, sold $5,090,502 worth of Ordinary Shares (24,339 units at $209.15), was granted 22,690 units of Ordinary Shares and converted options into 22,624 units of Ordinary Shares, closing all direct ownership in the company (SEC Form 4) to satisfy withholding obligation

Chief Legal Officer Collins Spencer was granted 69,117 units of Ordinary Shares, converted options into 8,134 units of Ordinary Shares and covered exercise/tax liability with 36,310 units of Ordinary Shares (SEC Form 4) to satisfy withholding obligation

Chief People Officer Eaton Charlotte Claire was granted 5,612 units of Ordinary Shares, converted options into 2,200 units of Ordinary Shares and covered exercise/tax liability with 3,672 units of Ordinary Shares, increasing direct ownership by 38% to 14,905 units (SEC Form 4) (for tax liability)

Chief Executive Officer Haas Rene A. was granted 265,643 units of Ordinary Shares and covered exercise/tax liability with 143,316 units of Ordinary Shares, increasing direct ownership by 45% to 396,007 units (SEC Form 4) (tax withholding)

Chief Financial Officer Child Jason was granted 81,359 units of Ordinary Shares, converted options into 9,317 units of Ordinary Shares and covered exercise/tax liability with 37,950 units of Ordinary Shares, increasing direct ownership by 34% to 206,152 units (SEC Form 4) to satisfy tax liability

Director Jacobs Paul E converted options into 2,141 units of Ordinary Shares, increasing direct ownership by 40% to 7,442 units (SEC Form 4)

SEC Form 4 filed by Director Fisher Ronald D

Director Sine Jeffrey converted options into 2,141 units of Ordinary Shares, increasing direct ownership by 29% to 9,572 units (SEC Form 4)

SEC Form 4 filed by Director Dykstra Karen E