The chapter discusses what is known and not yet known about leading entrepreneurial ventures throughout their pre-legitimacy and post-legitimacy phases. While the literature has grown rapidly, there are still areas that require further investigation. Specifically, the chapter identifies five areas that need more research:1. The role of leadership in shaping the pre-legitimacy and post-legitimacy phases of the venture life cycle.2. The impact of leader-follower relationships on the success of entrepreneurial ventures during these phases.3. The influence of external factors, such as market conditions and regulatory environments, on the leadership approaches required for successful entrepreneurship.4. The development of leadership competencies specific to the pre-legitimacy and post-legitimacy phases of entrepreneurial ventures.5. The use of alternative theories or frameworks to better understand the complex dynamics involved in leading entrepreneurial ventures.The authors emphasize that understanding these nuances is crucial for advancing leadership research and practice in this domain, and suggest that future studies should aim to integrate multiple theoretical perspectives and approaches to provide a more comprehensive understanding of leading entrepreneurial ventures.