Exhibit 4.3 ISLAND HOLDING COMPANY, INC. NONQUALIFIED STOCK OPTION AGREEMENT THIS STOCK OPTION AGREEMENT (the "Agreement"), made as of the 1st day of February, 2002 (the "Grant Date"), between Island Holding Company, Inc. (the "Company"), and Alex...Nonqualified Stock Option Agreement • September 23rd, 2002 • Instinet Group Inc • Security brokers, dealers & flotation companies • Delaware
