Merck & Co Inc $13,776,893 Unigene Laboratories Inc $49 XOMA Corporation $327,237 Exelixis Inc $9,107,944 SiteOne Landscape Supply Inc $2,477,983 Athersys Inc (New) $0 Merck & Co Inc $13,776,893 Unigene Laboratories Inc $49 XOMA Corporation $327,237 Exelixis Inc $9,107,944 SiteOne Landscape Supply Inc $2,477,983 Athersys Inc (New) $0