April 29, 2013
Osisko Provides Notice of First Quarter 2013 Financial Results Release and Conference Call
MONTREAL, QUEBEC--(Marketwired - April 29, 2013) - Osisko Mining Corporation (TSX:OSK)(FRANKFURT:EWX) announces that its first quarter 2013 results will be released on May 9, 2013 followed by a conference call on Friday, May 10th at 9:00am EDT.

Q1 Conference Call Information

Those interested in participating in the conference call should dial in at 1 416 981 9000 (Toronto local and international), or 800 734 8583 (North American toll free). An operator will direct participants to the call.

The conference call replay will be available from 11:00 a.m. EST on May 10, 2013 until 11:59 p.m. EST on May 24, 2013 with the following dial in number: 1 416 626 4100 or Toll-free 800 558 5253, access code 21654745.

About Osisko Mining Corporation

Osisko Mining Corporation operates the Canadian Malartic Gold Mine in Malartic, Quebec and is pursuing exploration on a number of properties, including the Hammond Reef Gold and Upper Beaver projects in Northern Ontario.

CONTACT INFORMATION:
John Burzynski
Vice-President Corporate Development
(416) 363-8653
or
Sylvie Prud'homme
Director of Investor Relations
(514) 735-7131
Toll Free: 1-888-674-7563
www.osisko.com