Bob Gamgort, president of food giant Mars, resigns

Bob Gamgort, global president of Mars Chocolate, has resigned from his post.

Paul S. Michaels, CEO of Mars, will manage the chocolate business until the next president is appointed.

Gamgort launched his marketing career at Kraft Foods, and later spent time managing advertising, sponsorship and national events at Major League Baseball.

He joined Mars in 1998 as VP marketing for the US Snackfoods division and in 2002 was promoted to North American president.

Mars' creative brands in the US are largely handled by Omnicom Group agencies.