BioWorld’s three-part analysis of M&As sought to discover successful transactions and to understand the trend of multibillion-dollar deals that have become commonplace in the last decade. Instead, more than 80% of the acquisitions explored simply indicate that buyers are paying too much, suggesting that transactions meant to restore pipelines and revenues with innovative and marketed products are sometimes akin to high-stakes gambling. In part three, the final part of this series, we examine four more disappointments in which the return on investment (ROI) remains well behind the price paid in acquiring the company.