Startups are notorious for making big changes on a very regular basis. But the leadership team you build for one stage of growth isn't always right for the next. Certain leaders are experts in building a company from its infancy; others specialize in scaling after an investment round. And the longer an exec team member is part of the company, the more they can feel indispensable - part of the furniture. How can founders hire the executives that deliver the most success for the current stage of their company? And how should they transition from one group of execs to the next, even if it involves letting some very valued members of the exec team go?