Dunkin’ Brands Group Inc. said Wednesday that David Hoffmann has been named chief executive officer, effective immediately. He will serve on the board and continue as the president of Dunkin’ Donuts U.S., a role that brought him to the company in October 2016. Prior to joining Dunkin’ Brands, Hoffman worked with McDonald’s Corp. for 22 years. Hoffmann succeeds Nigel Travis, who is retiring after serving as CEO since 2009 and has been appointed executive chairman of the board. Dunkin’ Brands shares are up 31% for the past year, outpacing the S&P 500 index , which is up 15.2% for the period.