Corporate governance in joint stock companies is a key aspect of modern business, determining the efficiency and sustainability of companies. Given the globalization and the growing volume of world financial markets, the study of corporate governance models and their impact on efficiency is becoming an extremely important task. In this article, a comparative analysis of various models of corporate governance in joint-stock companies is carried out in order to determine their impact on the efficiency of such companies. The purpose of this study is to systematize and compare different models of corporate governance, as well as to determine their impact on the financial efficiency and sustainability of joint-stock companies. The object of the research is corporate management in jointstock companies. The subject of research is management models, including control mechanisms, ownership structures, and strategic decision-making methods. To achieve the goal, the following methods were used in this study. Systematic analysis of scholarly sources, including academic articles, books, and reports, to summarize existing theoretical approaches to corporate governance. Analysis of financial statements of joint-stock companies, using financial indicators to compare different management models and their impact on performance indicators. Survey of leading specialists and heads of corporations to obtain practical insight into the implementation of various management models. In the course of the study, the main models of corporate governance were identified and analyzed, such as the equity capital model, the "feedback" corporate governance model (stakeholder model) and others. With the help of a comparative analysis, it was determined which of them contribute to higher financial efficiency and stability of companies. Based on the research, it was determined that the "feedback" model of corporate governance improves efficiency and ensures greater sustainability of joint-stock companies compared to other models. The implementation of this model is recommended in order to increase the competitiveness and sustainability of corporations on the international market. The article offers an important contribution to the understanding of the impact of different models of corporate governance on the business environment and provides practical recommendations for enterprise managers and decision-makers regarding the choice of the optimal governance model.