This report delves into the impact of mergers on shareholder value, stakeholder performance, and overall value creation. It begins with an overview of mergers, examining their legal structure and the influence on share prices of involved firms. The document explores the positive and negative impacts of mergers, including integrative and emergent synergies, and the role of post-merger integration (PMI). The research aims to analyze how mergers affect stakeholder performance and value, including a look at the negative influences. It addresses the importance of effective transition processes post-merger and the challenges associated with integration, offering insights into the complexities of mergers and acquisitions. This report is particularly focused on the analysis of the positive and negative impacts of mergers and their effect on the performance of stakeholders, as well as defining the value creation for stakeholders by implementing the concepts of merger.