Company:
Yahoo
Title:
President and CEO
In July, Marissa Mayer ended her 13-year stint at Google (GOOG, Fortune 500) to take the reins at Yahoo (YHOO, Fortune 500), all while pregnant with her first child. The new mom and CEO multi-tasked her way through the challenges; she claims working at the struggling tech company is "fun" and that her son Macallister is "easy." Mayer admits a turnaround at Yahoo will take several years, but hopes to address the company's identity crisis by making its suite of desktop assets -- email, news, weather, stock quotes -- easily accessible on mobile devices; she also says she's focusing on employee performance rather than potential.
NEXT: Marillyn Hewson