1 EXHIBIT 2.1 AGREEMENT AND PLAN OF MERGER AGREEMENT AND PLAN OF MERGER, dated as of April 19, 2000 (this "Agreement"), by and between NBT BANCORP INC, a Delaware corporation ("NBT"), and BSB BANCORP, INC, a Delaware corporation ("BSB") (at times,...Merger Agreement • April 28th, 2000 • BSB Bancorp Inc • State commercial banks • Delaware
