Blocklisting Six Monthly Return

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc Executive Share Option Scheme

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

7,256,878

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

63,231

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

7,193,647

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc Stock Option Plan

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

18,385,779

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

110,773

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

18,275,006

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc NQ US schemes

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

43,178,690

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

1,198,060

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

41,980,630

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc Savings Related Share Scheme

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

3,221,746

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

1,970,210

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

1,251,536

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc Unapproved Share Option Scheme

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

47,190,898

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

472,143

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

46,718,755

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc Savings Related Share Option Plan

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

216,721

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

Nil

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

216,721

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc Employee Equity Plan

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

Nil

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

16,439,980

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

715,228

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

15,724,752

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc Long Term Incentive Plan

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

20,000,000

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

Nil

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

20,000,000

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc Deferred Annual Bonus Plan

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

8,000,000

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

Nil

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

Nil

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

8,000,000

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796

Name of applicant:

ARM Holdings plc

Name of scheme:

ARM Holdings plc US Employee Stock Purchase Plan

Period of return:

From:

15 July 2011

To:

14 January 2012

Balance of unallotted securities under scheme(s) from previous return:

Nil

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

2,548,577

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

279,806

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

2,268,771

Name of contact:

Ian Thornton

Telephone number of contact:

+44 1223 400796