Block listing Interim Review

Name of applicant:

SPIRENT COMMUNICATIONS PLC

Name of scheme:

SPIRENT LONG-TERM INCENTIVE PLAN

Period of return:

From:

1 JULY 2024

To:

31 DECEMBER 2024

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

1,300,000 ORDINARY SHARES OF 3 1/3p EACH

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):

0

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

0

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

1,300,000 ORDINARY SHARES OF 3 1/3p EACH

Name of contact:

STEVE HORNBUCKLE

Telephone number of contact:

01293 767676

Legal Entity Identifier:

213800HKCUNWP1916L38

Name of applicant:

SPIRENT COMMUNICATIONS PLC

Name of scheme:

SPIRENT EMPLOYEE INCENTIVE PLAN 2005

Period of return:

From:

1 JULY 2024

To:

31 DECEMBER 2024

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

1,495,652 ORDINARY SHARES OF 3 1/3p EACH

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):

0

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

0

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

1,495,652 ORDINARY SHARES OF 3 1/3p EACH

Name of contact:

STEVE HORNBUCKLE

Telephone number of contact:

01293 767676

Legal Entity Identifier:

213800HKCUNWP1916L38

Name of applicant:

SPIRENT COMMUNICATIONS PLC

Name of scheme:

U.S. EMPLOYEE STOCK PURCHASE PLAN

Period of return:

From:

1 JULY 2024

To:

31 DECEMBER 2024

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

1,237,364 ORDINARY SHARES OF 3 1/3p EACH

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):

0

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

0

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

1,237,364 ORDINARY SHARES OF 3 1/3p EACH

Name of contact:

STEVE HORNBUCKLE

Telephone number of contact:

01293 767676

Legal Entity Identifier:

213800HKCUNWP1916L38

Name of applicant:

SPIRENT COMMUNICATIONS PLC

Name of scheme:

SPIRENT GLOBAL ALL EMPLOYEE SHARE PURCHASE PLAN

Period of return:

From:

1 JULY 2024

To:

31 DECEMBER 2024

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

814,444 ORDINARY SHARES OF 3 1/3p EACH

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):

0

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

0

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

814,444 ORDINARY SHARES OF 3 1/3p EACH

Name of contact:

STEVE HORNBUCKLE

Telephone number of contact:

01293 767676

Legal Entity Identifier:

213800HKCUNWP1916L38

Name of applicant:

SPIRENT COMMUNICATIONS PLC

Name of scheme:

SPIRENT SAVINGS RELATED SHARE OPTION SCHEME

Period of return:

From:

1 JULY 2024

To:

31 DECEMBER 2024

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

68,185 ORDINARY SHARES OF 3 1/3p EACH

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):

0

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

0

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

68,185 ORDINARY SHARES OF 3 1/3p EACH

Name of contact:

STEVE HORNBUCKLE

Telephone number of contact:

01293 767676

Legal Entity Identifier:

213800HKCUNWP1916L38