Research analyzing the benefits of the separation of ownership and management is difficult to find. This paper examines the role of professional managers as objective coordinators in the implementation of projects where all shareholders benefit. When shareholders' project values are private information, even for projects that benefit all shareholders, there are cases where implementation is impossible without objective third-party coordination due to the "first mover problem"—the information leakage problem in preemptive actions—during the implementation of coordination mechanisms among shareholders. In such cases, professional managers, acting as objective coordinators, can make project implementation possible, thereby enhancing efficiency, and can also enhance equity through the coordination of profit distribution among shareholders.