Issue of Equity

TYRATECH, INC.

("TyraTech" or the "Company")

Issue of Equity

TyraTech, Inc. (AIM: TYR), a natural life sciences company, announces that it has issued 150,000 new common shares of $0.001 each in the capital of the Company (the "New Common Shares") at 6 pence per share in consideration for services to be provided to the Company by a third-party consultant.

Application has been made to the London Stock Exchange for the New Common Shares to be admitted to trading on AIM ("Admission"). It is expected that Admission and the commencement of dealings will take place on 18 May 2012.

Following Admission, the Company will have 107,757,255 common shares of $0.001 each in issue. The number of restricted common shares trading under TIDM 'TYR' following Admission will be 95,964,933 and the number of unrestricted common shares trading under TIDM 'TYRU' following Admission will be 11,792,322.

For further information please contact:

TyraTech Inc.

Alan Reade, Executive Chairman Tel: +1 919 415 4310

Peter Jerome, Chief Financial Officer Tel: +1 919 415 4280

N+1 Brewin, Nominated Adviser and Joint Broker

Aubrey Powell / Robert Beenstock Tel: +44 20 3201 3170

First Columbus LLP, Joint Broker

Chris Crawford Tel: +44 20 3002 2070