Separately, the confectionery giant's European marketing chief, Martyn Wilks, is moving internally to a senior South American position.
Rogers, an American, is based in Mars' global headquarters in McLean, Virginia, in the US. He moved to Mars in 1995 as the brand's top European marketing chief from ad agency Bates Worldwide, where he oversaw the Mars business.
In 2000, he was promoted to head Mars' global marketing team. When Rogers took the job, his post as top European marketer was taken by Wilks, who previously ran Mars in France.
As Marketing went to press, a spokeswoman for Mars confirmed Wilks' move, but said she was unaware of Rogers' departure.