Westport Innovations Inc. • Share Information

Symbol
and CUSIP

The Toronto Stock Exchange: WPT
CUSIP: 960 908 101

Transfer Agent
and Registrar

Computershare Investor Services Inc.
Branch Office:
3rd floor - 510 Burrard St.
Vancouver, BC V6C 3B9
phone: (604) 661-9400

Common Shares
(from TSX Group)

On July 21, 2008, Westport effected a 3.5:1 share consolidation of its issued and outstanding shares. As a result of the share consolidation, as at July 25th, 2008, Westport had approximately 27,509,573 Common Shares issued and outstanding.

Peer Group

Westport's Peer Group is comprised of several companies within three general technology groups:

Energy Conversion	AstroPower Inc., Ballard Power Systems Inc., Fuel Cell Technologies Corp., FuelCell Energy Inc., Hydrogenics Corp., Mechanical Technology Inc., Medis Technologies Ltd., Millennium Cell Inc., Plug Power Inc. and Global Thermoelectric Inc.
Fuel Infrastructure	Catalytica Energy Systems Inc., Dynetek Industries Ltd., Proton Energy Systems Inc., Quantum Fuel Systems Tech., Stuart Energy Systems Corp. and Syntroleum Corp.
Power Infrastructure	Active Power Inc., American Superconductor Corp., Artesyn Technologies Inc., Azure Dynamics Corp., Capstone Turbine Corp., Electrovaya Inc., Energy Conversion Devices Inc. and Turbo Genset Inc.