1 STOCK PURCHASE AGREEMENT This Stock Purchase Agreement (the "Agreement") is made as of July 31, 2001 between Questcor Pharmaceuticals, Inc., a California corporation (the "Company"), and Sigma-Tau Finance Holding S.A. (the "Purchaser"). WHEREAS, the...Stock Purchase Agreement • August 10th, 2001 • Questcor Pharmaceuticals Inc • Pharmaceutical preparations • California
