MICROGEN PLC
27 SEPTEMBER 2011
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: 25 MARCH 2011 To: 24 SEPTEMBER 2011
Balance under scheme from previous return:
MICROGEN PLC PERFORMANCE SHARE PLAN 2006 - 411,233 ORDINARY SHARES OF 5P EACH
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 - 261,655 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 - 0 ORDINARY SHARES OF 5P EACH
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 - 0 ORDINARY SHARES OF 5P EACH
Number of securities issued/allotted under scheme during period:
MICROGEN PLC PERFORMANCE SHARE PLAN 2006 - 0 ORDINARY SHARES OF 5P EACH
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 -139,168 ORDINARY SHARES OF 5P EACH
Balance under scheme not yet issued/allotted at end of period
MICROGEN PLC PERFORMANCE SHARE PLAN 2006 - 411,233 ORDINARY SHARES OF 5P EACH
MICROGEN PLC COMPANY SHARE OPTION PLAN 2006 - 122,487 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
81,316,094 ORDINARY SHARES OF 5P EACH
Name of contact: PHILIP WOOD, DIRECTOR
Address of contact: OLD CHANGE HOUSE, 128 QUEEN VICTORIA STREET, LONDON, EC4V 4BJ
Telephone number of contact: 020 7496 8100
www.microgen.com