MICROGEN PLC
27 SEPTEMBER 2010
BLOCK LISTING RETURN
Name of applicant: MICROGEN PLC
Name of scheme: MICROGEN PLC PERFORMANCE SHARE PLAN 2006
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006
Period of return: From: 7 MARCH 2010 To: 24 SEPTEMBER 2010
Balance under scheme from previous return:
MICROGEN PLC PERFORMANCE SHARE PLAN 2006 - 60,375 ORDINARY SHARES OF 5P EACH
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 - 142,001 ORDINARY SHARES OF 5P EACH
The amount by which the block scheme has been increased, if the scheme has been increased since the date of the last return:
MICROGEN PLC PERFORMANCE SHARE PLAN 2006 - 650,000 ORDINARY SHARES OF 5P EACH
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 - 350,000 ORDINARY SHARES OF 5P EACH
Number of securities issued/allotted under scheme during period:
MICROGEN PLC PERFORMANCE SHARE PLAN 2006 - 275,807 ORDINARY SHARES OF 5P EACH
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 -91,339 ORDINARY SHARES OF 5P EACH
Balance under scheme not yet issued/allotted at end of period
MICROGEN PLC PERFORMANCE SHARE PLAN 2006 - 434,568 ORDINARY SHARES OF 5P EACH
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 - 400,662 ORDINARY SHARES OF 5P EACH
Number and class of securities originally listed and the date of admission
MICROGEN PLC PERFORMANCE SHARE PLAN 2006 - 127,460 ORDINARY SHARES OF 5P EACH - 7 SEPTEMBER 2009
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 - 142,001 ORDINARY SHARES OF 5P EACH - 7 SEPTEMBER 2009
MICROGEN PLC PERFORMANCE SHARE PLAN 2006 - 650,000 ORDINARY SHARES OF 5P EACH - 24 SEPTEMBER 2010
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 - 350,000 ORDINARY SHARES OF 5P EACH - 24 SEPTEMBER 2010
Total number of securities in issue at the end of the period
80,454,584 ORDINARY SHARES OF 5P EACH
Name of contact: ANJUM SIDDIQI, COMPANY SECRETARY
Address of contact: FLEET HOUSE, 3 FLEETWOOD PARK, BARLEY WAY, HANTS, GU51 2QJ
Telephone number of contact: 01252 772 326
www.microgen.com