EXHIBIT 4.15 STOCK PURCHASE AGREEMENT THIS AGREEMENT, dated as of May 10, 1999, is by and between HIGHLANDS INSURANCE GROUP, INC. (the "Company"), a Delaware corporation with offices at 1000 Lenox Drive, Lawrenceville, New Jersey 08648, and WILLIS T....Stock Purchase Agreement • July 2nd, 1999 • Highlands Insurance Group Inc • Fire, marine & casualty insurance • Delaware
