Many drug/biotech partnerships eventually result in buyout offers; a few examples (in descending order of buyout premium): Roche-MEMY PFE-COLY PFE-ICGN LLY-SGXP PFE-ENCY GSK-HGSI NVS-Speedel BMY-MEDX BMY-ZGEN MRK-SGP LLY-ICOS BMY-IMCL (outbid by LLY)