TORONTO, ON. (July 12, 2010) – GMP Capital Inc. (“GMP”) (TSX: GMP) plans to announce its financial
results for the three and six months ended June 30, 2010 on Friday, August 6, 2010, at approximately 6
a.m.(ET). A conference call and live audio webcast to discuss GMP’s results for the three and six
months ended June 30, 2010 will also be held at 10:00 a.m. (ET). Kevin Sullivan, Chief Executive
Officer, and Christine Drake, Chief Financial Officer, will host the call along with a question and
answer session for analysts and institutional investors.