On February 25, 2009, Osisko Mining Corporation closed a prospectus offering of 88,550,000 units, which included the exercise in full of the over-allotment option, at a price of $4.55 per unit, for gross proceeds of more than $402 million.

Osisko was represented by André Le Bel, Vice President, Legal Affairs and Corporate Secretary, and a team from Lavery consisting of René Branchaud, David Pineault and Benoit Mallette (Corporate and Securities) and Philip Nolan (Tax).

The securities of Osisko are listed on the TSX (OSK) and the Deutsche Boerse (EWX). Osisko holds a 100% interest in the Canadian Malartic gold deposit in Quebec, Canada through a wholly owned junior explorer. Canadian Malartic, one of the world’s largest undeveloped gold resources, is located in a mining district near an extensive, existing mining infrastructure.