David Logan is an author and speaker known for his work on leadership and organizational culture. He co-authored the book Tribal Leadership, which explores how groups of people can work together more effectively by understanding their social dynamics. Logan's insights are based on extensive research and practical experience in various organizations. In addition to his writing, Logan is a consultant and has delivered talks at numerous conferences. He focuses on helping leaders create environments that foster collaboration and innovation. His work emphasizes the importance of understanding the different stages of group development to enhance team performance.