TORONTO, September 18, 2012 – GMP Capital Inc. (“GMP”) (TSX: GMP) announced today that Christine
Drake, Chief Financial Officer and Secretary, is leaving GMP. GMP also announced that its Board of
Directors has appointed Deborah Starkman, Managing Director, Finance, as GMP’s new Chief Financial
Officer and Secretary, effective immediately. Ms. Starkman has served in a number of roles including
Head of Regulatory Reporting and Risk Management since joining GMP in February 2006. Ms. Starkman
is a Chartered Accountant and also holds a Chartered Financial Analyst designation.