Osisko Mining Corp. Closing Expected to Occur on June 16, 2014

MONTREAL, Jun 6, 2014 - Osisko Mining Corp. (TSX:OSK) (FRANKFURT:EWX) ("Osisko") anticipates that, subject to court approval, and the satisfaction of closing conditions, the effective date and closing of the shareholder approved joint acquisition of 100% of the outstanding shares of Osisko by Agnico Eagle Mines Ltd. ("Agnico Eagle") and Yamana Gold Inc. ("Yamana") pursuant to a plan of arrangement (the "Arrangement") will occur on June 16, 2014.


The Arrangement

Under the Arrangement, each outstanding common share of Osisko will be exchanged for C$2.09 in cash, 0.07264 of a common share of Agnico Eagle, 0.26471 of a common share of Yamana, and one common share (one tenth of a common share on a consolidated basis) of a newly formed company that will acquire certain assets of Osisko as part of the Arrangement ("Osisko Gold Royalties Ltd").


Securityholders are encouraged to read Osisko's management information circular dated May 1, 2014 for full details of the Arrangement which was mailed to Osisko Securityholders and is also available on Osisko's website at www.osisko.com or on SEDAR at www.sedar.com.


About Osisko

Osisko Mining Corp. operates the Canadian Malartic Gold Mine in Malartic, Québec and is pursuing exploration on a number of properties, notably in Québec, Ontario and Mexico.


Forward-looking statements

Certain statements contained in this press release may be deemed "forward-looking statements". All statements in this release, other than statements of historical fact, that address events or developments that Osisko expects to occur, are forward looking statements. Forward looking statements are statements that are not historical facts and are generally, but not always, identified by the words "expects", "plans", "anticipates", "believes", "intends", "estimates", "projects", "potential", "scheduled" and similar expressions, or that events or conditions "will", "would", "may", "could" or "should" occur including, without limitation, the satisfaction of all technical, economical, regulatory and financial conditions in order to complete the Arrangement between Osisko, Agnico Eagle and Yamana, the realization of all expected benefits of this Arrangement, and the view on (i) the quality and the potential of Osisko's exploration and mining assets, (ii) the consideration offered to Osisko shareholders, and (iii) the potential of Osisko Gold Royalties Ltd. Although Osisko believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results may differ materially from those in forward looking statements. Factors that could cause the actual results to differ materially from those in forward-looking statements include, gold prices, results of exploration and development activities, Osisko's limited experience with production and development stage mining operations uninsured risks, regulatory changes, defects in title, availability of personnel, materials and equipment, timeliness of government or court approvals, actual performance of facilities, equipment and processes relative to specifications and expectations, unanticipated environmental impacts on operations market prices, continued availability of capital and financing and general economic, market or business conditions.

These factors are discussed in greater detail in Osisko's most recent Annual Information Form, which is filed on SEDAR and also provide additional general assumptions in connection with these statements. Osisko cautions that the foregoing list of important factors is not exhaustive. Investors and others who base themselves on the forward looking statements contained herein should carefully consider the above factors as well as the uncertainties they represent and the risk they entail. Osisko believes that the expectations reflected in those forward-looking statements are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward-looking statements included in this press release should not be unduly relied upon. These statements speak only as of the date of this press release. Osisko undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, other than as required by applicable law.



Contact

Osisko Mining Corp.
John Burzynski, Vice-President Corporate Development
(416) 363-8653
www.osisko.com

Sylvie Prud'homme, Director of Investor Relations
(514) 735-7131
Toll Free: 1-888-674-7563