EXHIBIT 1.2 ADDITIONAL SELLING AGENT AGREEMENT GRANT PARK FUTURES FUND LIMITED PARTNERSHIP (AN ILLINOIS LIMITED PARTNERSHIP) UNITS OF LIMITED PARTNERSHIP INTEREST DEARBORN CAPITAL MANAGEMENT, L.L.C. General Partner and Commodity Pool Operator DATED...Additional Selling Agent Agreement • June 25th, 2003 • Grant Park Futures Fund Limited Partnership • Investors, nec • Illinois
