I found information about an individual who impacted the study of strategic planning. Henry Mintzberg is a prominent figure in the field of strategic planning. He is a management scholar and author known for his work on organizational structure and strategic management. Mintzberg's impact on the study of strategic planning is significant due to his alternative approach to traditional strategic planning. He emphasized the importance of emergent strategies and the role of managers as strategists. Mintzberg's research and writings have influenced the understanding of strategy formation and implementation, challenging conventional views of strategic planning and offering valuable insights for practitioners and scholars in the field.