John H. “Jack” Zenger is the Co-founder and CEO of Zenger Folkman, a professional services firm providing consulting and leadership development programs for organizational effectiveness initiatives. With more than five decades of experience, Jack is considered a world expert in the field of leadership development and organizational behavior. He is a highly esteemed and influential speaker, consultant, and executive coach with the ability to connect with audiences through compelling research and inspiring stories.
Jack has authored or co-authored 50 articles on leadership, productivity, e-learning, training, and measurement and is a national columnist for Forbes and Harvard Business Review. He is the co-author of seven books on leadership: the best-seller 'Extraordinary Leader: Turning Good Managers into Great Leaders' and 'Results-Based Leadership' which was voted best business book in 2000. Jack was also named 'Top Leader of the Year' by Hr.com in 2014.