BLOCK LISTING SIX MONTHLY RETURN

Name of applicant:

GATTACA PLC

Name of scheme:

Gattaca plc: Long-Term Incentive Plan, Deferred Share Bonus Plan, Enterprise Management Incentive Plan and Share Incentive Plan

Period of return:

From:

3 June 2016

To:

2 December 2016

Number and class of securities not issued under the scheme from previous return:

129,464

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

Number of securities issued/allotted under the scheme during the period:

20,364

Balance of unallotted securities under the scheme at the end of the period:

109,100

Number and class of securities originally admitted and the date of submission:

25,000 ordinary shares - 4 December 2006

93,420 ordinary shares - 11 June 2007

75,000 ordinary shares - 4 June 2009

100,000 ordinary shares - 13 January 2011

200,000 ordinary shares - 19 February 2013

500,000 ordinary shares - 22 January 2014

500,000 ordinary shares - 9 April 2014

Total number of securities in issue at the end of the period

31,048,694

Name of contact:

Caspar Branson, General Counsel & Company Secretary, Gattaca plc

Telephone number of contact:

1450 Parkway, Solent Business Park, Fareham, Hampshire, PO15 7AF

01489 89 89 89