article_snippet: Cook (left) is the only openly gay chief executive on the Fortune 500 list of biggest U.S. companies .
article_snippet: Cook (left) is the only openly gay chief executive on the Fortune 500 list of biggest U.S. companiesU.S. , according to CNN.
article_snippet: Former CEO of BP John Brown, who held the position from 1995 to 2007, only acknowledged Cook (left) was gay after leaving office when an ex-boyfriend outed Cook (left).