Exhibit 10.15 SERP ASSUMPTION AGREEMENT THIS AGREEMENT, is made and entered into as of the 15th day of January 1993 by and between OnBank, a stock-form savings bank, organized and existing under the laws of the State of New York, OnBank & Trust Co., a...Serp Assumption Agreement • August 13th, 1998 • M&t Bank Corp • State commercial banks • New York
