To better understand the use and success of collaborations, The Bridgespan Group, in collaboration with The Lodestar Foundation, surveyed 237 nonprofit CEOs and 101 foundation officers in 2014 on their participation in four common forms of formal collaboration: associations (including coalitions and community collaboratives), joint programs, shared support functions, and mergers (including subsidiary relationships). The survey uncovered details about their participation, as well as the barriers that block results. This report explores the findings in detail, sharing positive trends in collaboration as well as the barriers that keep nonprofits and funders from working more effectively to realize the promise of collaborations