EXHIBIT 10.39 RESTRICTED STOCK PURCHASE AGREEMENT Agreement made as of this 31st day of October, 1996 by and between Signal Pharmaceuticals, Inc., a California corporation (the "Company"), and University of Massachusetts (or "Purchaser"). Unless...Restricted Stock Purchase Agreement • February 18th, 2000 • Signal Pharmaceuticals Inc • Services-commercial physical & biological research • California
EXHIBIT 10.45 RESTRICTED STOCK PURCHASE AGREEMENT Agreement made as of this 31st day of October, 1996 by and between Signal Pharmaceuticals, Inc., a California corporation (the "Company"), and University of Massachusetts (or "Purchaser"). Unless...Restricted Stock Purchase Agreement • May 15th, 1998 • Signal Pharmaceuticals Inc • California