This document summarizes a report on realizing value from open innovation. It discusses key findings from case studies of large companies that have implemented open innovation strategies. Some of the main points covered include identifying the necessary building blocks for open innovation, how different market sectors influence open innovation approaches, common barriers companies face, and the importance of balancing open and closed innovation approaches. The report concludes that finding the right balance of open innovation, focusing on developing individuals' absorptive capacity, and effectively connecting to external innovation ecosystems are critical for companies to realize value from open innovation initiatives.