Block Listing Six Monthly Return

For immediate release

30 September 2022

Name of applicant:

Abcam plc

Name of scheme:

1. Abcam 2015 Share Option Scheme

2. Abcam Share Incentive Plan

3. Abcam Company Share Option Plan

4. Abcam Long Term Incentive Plan

5. Annual Bonus Plan

6. Abcam Growth Plan

7. AbShare

Period of return:

From:

1 April 2022

To:

30 September 2022

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

1. 761,939

2. 67,775

3. 313,573

4. 581,325

5. 839,652

6. 3,500,000

7. -

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):

1. -

2. -

3. -

4. -

5. -

6. -

7. -

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

1. 65,922

2. -

3. 8,118

4. 3,967

5. 10,953

6. -

7. -

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

1. 696,017

2. 67,775

3. 305,455

4. 577,358

5. 828,699

6. 3,500,000

7. -

Name of contact:

Marc Perkins, Company Secretary

Telephone number of contact:

+ 44 (0) 1223 696 000