Quoted options Change of Code andCommencement of...

Quoted options Change of Code and
Commencement of Trading
Brisbane, Australia Tuesday, 11 May 2010: Metal Storm Limited (ASX trading code: MST, OTC Symbol:
MTSXY).
Metal Storm Limited advised the market on Friday 7 May 2010 that the quoted options allotted on Friday
would trade under the ASX code MSTOA. This was based on advice from ASX that due to the previous
code, MSTO, being in existence and was therefore not available. ASX has advised today that, as the
previous code has been deleted, MSTO it is now available for use.
Accordingly, the Metal Storm quoted options expiring on 1 September 2011 will trade under the ASX
code MSTO.
Trading will commence from opening of trading tomorrow, Wednesday 12 May 2010.
The Company has been advised by its share registry that holding statements will be dispatched to holders
tomorrow.