Osisko Mining Closes $149.5M Bought Deal Financing

On September 1, 2009, Osisko Mining Corporation closed a public offering of 21,361,250 common shares, which included the exercise in full of the over-allotment option, at a price of $7 per common share for gross proceeds of more than $149.5 million.

The common shares were sold on a bought deal basis through a syndicate of underwriters led by Thomas Weisel Partners Canada Inc. and BMO Nesbitt Burns Inc. and including Dundee Securities Corporation.

Osisko was represented by André Le Bel, vice president, legal affairs and corporate secretary, a team from Lavery, de Billy L.L.P. consisting of René Branchaud, David Pineault and Benoit Mallette (corporate and securities) and by Andrew Beck of Torys LLP, who acted as US counsel to Osisko.

The underwriters were represented by Lang Michener LLP with a team that included Hellen Siwanowicz, John Conway and Denno Chen (corporate and securities) and by Skadden, Arps, Slate, Meagher & Flom LLP, who acted as US counsel, with a team that included Riccardo Leofanti and Michael Acedo.

Lawyer(s)

Hellen Siwanowicz John Conway Riccardo Leofanti Benoit Mallette René Branchaud Denno M. Chen Andrew J. Beck

Firm(s)

Lavery, de Billy, L.L.P. Torys LLP Skadden, Arps, Slate, Meagher & Flom LLP