SUPPLEMENTAL AGREEMENT TO THE DECEMBER 5, 1994 INVESTMENT BANKING AGREEMENT THIS AGREEMENT is entered into this 23rd day of April, 1998, by and between Richter & Co., Inc. ("Richter") and Avesis Incorporated, a Delaware corporation (the "Company"),...Investment Banking Agreement • August 26th, 1998 • Avesis Inc • Services-business services, nec
