Cornerstone Re-prices Stock Options

Cornerstone Metals Inc.

Suite 880 – 580 Hornby Street Vancouver, BC V6C 3B6

December 7th, 2012

Cornerstone Re-prices Stock Options

Cornerstone Metals Inc. (TSX.V – CCC) (the “Company”), announces that it has re-priced 187,000 outstanding incentive stock options of the Company from exercise prices ranging between $0.70 and $1.50 to $0.12. The options are held by insiders and expire from dates ranging from November 14, 2013 to March 22, 2015. The options are held as follows:

Name Number of Options Paul S. Cowley 70,000

Robert G.McMorran (Malaspina Consultants.) 47,000 Frederick J. Sveinson 70,000

The Company sought and received disinterested shareholder approval at the annual general meeting held on July 19, 2011. The re-pricing is subject to approval of the TSX Venture Exchange.

On Behalf of the Board of Directors,

Courtney Shearer Interim President and CEO

(403)804-8636 phone, (888)255-9404 fax or [email protected]

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies ofthe TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.