Issue of Equity

20 December 2012

TyraTech, Inc.

(the "Company" or "TyraTech")

Issue of Equity

TyraTech, Inc. (AIM: TYR), a natural life sciences company, announces that it has issued 419,050 new common shares of $0.001 each in the capital of the Company (the "New Common Shares") in consideration for US$25,000 in services provided to the Company by a third-party consultant. The number of common shares issued was determined using the mid-market closing price on the date of the consulting agreement.

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 27 December 2012.

Following Admission, the Company will have 108,195,055 common shares of $0.001 each in issue. The number of restricted common shares trading under TIDM 'TYR' following Admission will be 80,908,686 and the number of unrestricted common shares trading under TIDM 'TYRU' following Admission will continue to be 27,286,369.

In addition, the Company holds 1,084,413 common shares in treasury.

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For further information please contact:

TyraTech Inc.Alan Reade, Executive ChairmanTel: +1 919 415 4310

Peter Jerome, Chief Financial OfficerTel: +1 919 415 4280

N+1 Singer, Nominated Adviser and Joint BrokerAubrey Powell / Alex WrightTel: +44 20 7496 3000

First Columbus LLP, Joint BrokerChris CrawfordTel: +44 20 3002 2070