CEO and Chairman, DuPont, 59
Kullman notched a major (and rare) win against an activist in May when her shareholders voted down Nelson Peltz’s proxy fight to split up DuPont and nominate his candidates to its board. Still, you can’t fault his attempt to shake things up; revenue declined slightly last year to $36 billion, while profits sank 25% to $3.6 billion. The chemicals conglomerate took a page from Peltz’s playbook when it spun off its Chemours subsidiary in July. Kullman maintains it was her own idea all along.