Mergers and acquisitions (M&As) are events that attract considerable interest from academics and practitioners, and much research has been conducted into their impact on individuals, organizations and societies. Yet, despite all the existing research and the varied theoretical and methodological approaches employed, there remains more to learn about M&As. The Routledge Companion to Mergers and Acquisitions takes a detailed look at this multifacted subject using a novel framework of four domains – substantive issues, contextual issues, methodological issues and conceptual issues. Drawing on the expertise of its international team of contributors, the volume surveys the state of the field, including emerging and cutting-edge areas such as social network analysis and corporate branding. This Companion will be a rich resource for students, researchers and practitioners involved in the study of M&As, and organizational and strategic studies more widely.