EX-2.1 2 d430517dex21.htm STOCK PURCHASE AGREEMENT BY AND AMONG SOBEL BEST N.V., VION HOLDING N.V. AND PAT STOCK PURCHASE AGREEMENT dated as of October 28, 2012 among SOBEL BEST N.V., VION HOLDING N.V. and PATHEON INC. EXHIBITS EXHIBIT A Form of...