Roger Ferguson’s departure from TIAA in March of this year leaves the number of Black CEOs on the Fortune 500 list at four - less than 1%. At last year’s Page Annual Conference, we were fortunate to speak with Ron Williams, the former CEO of Aetna, and now CEO and Chairman of RW2 Enterprises. Ron shared some of the lessons from his experience as a Black CEO and what companies should be doing to ensure enterprise leadership is more diverse.