Merck & Co Inc $15,754,627 Unigene Laboratories Inc $49 XOMA Corporation $323,226 Exelixis Inc $7,351,782 SiteOne Landscape Supply Inc $2,602,369 Athersys Inc (New) $211 Merck & Co Inc $15,754,627 Unigene Laboratories Inc $49 XOMA Corporation $323,226 Exelixis Inc $7,351,782 SiteOne Landscape Supply Inc $2,602,369 Athersys Inc (New) $211