RNS Number:5985X
TyraTech, Inc.
01 June 2007


These written materials are not for distribution (directly or indirectly) in or
to the United States, Canada, Australia or Japan. They are not an offer of
securities for sale in or into the United States, Canada, Australia or Japan.


The securities described herein have not been, and will not be registered under
the U.S. Securities Act of 1933, as amended (the "Securities Act"), or any state
securities laws.  They may not be offered or sold in the United States, except
in transactions not subject to or exempt from, the registration requirements of
the Securities Act and applicable state laws.  The Company does not intend to
register any portion of the Offering in the United States or to conduct a public
offering of securities in the United States. No money, securities or other
consideration is being solicited and, if sent in response to the information
contained herein, will not be accepted."


Press Release                                                        1 June 2007


                                 TyraTech Inc.
                         ("TyraTech" or "the Company")

                             First Day of Dealings


TyraTech today announces the first day of trading of its Ordinary Shares on AIM,
the market owned and operated by the London Stock Exchange plc ("AIM").  Nomura
Code Securities Limited ("Nomura Code") is acting as Nominated Adviser and both
Nomura Code and Jefferies International Limited ("Jefferies") are acting as
joint brokers to the Company.  The market EPIC is TYR.


Admission to trading follows a Placing of the Company's Ordinary Shares, which
raised #25 million before expenses at the Placing Price of 500 pence per share.
The Company will have a market capitalisation of #110 million based on the
Placing price.


Placing and Admission Statistics

Placing price per share                                                #5.00

Number of New Common Shares issued by the Company in the Placing   5,000,000

New Common Shares as a percentage of the Enlarged Issued Share        22.73%

Capital

Number of Common Shares in issue immediately following Admission  22,000,022

Market capitalisation at the Placing Price                      #110 million
                                                              ($219 million)

Gross proceeds of the Placing receivable by the Company          #25 million
                                                              ($49.7million)

Estimated net proceeds of the Placing receivable by the Company #22.2 million
                                                              ($44.1 million)


For further information:

TyraTech Inc.

Douglas Armstrong PhD, Chief Executive Officer           Tel: +1 (321) 409 7403
                                                         www.tyratech.com
Nomura Code Securities

Charles Walker                                           Tel: +44 (0) 20 7776 1200
                                                         www.nomuracode.com
Jefferies International Limited

Jack Pryde                                               Tel: +44 (0) 20 7618 3500
                                                         www.jefferies.com

Media enquiries:

Abchurch

Heather Salmond                                          Tel: +44 (0) 20 7398 7700
heather.salmond@abchurch-group.com

Gareth Mead
gareth.mead@abchurch-group.com

Stephanie Cuthbert
stephanie.cuthbert@abchurch-group.com                    www.abchurch-group.com



                      This information is provided by RNS
            The company news service from the London Stock Exchange
END

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