Denver Post fileLong-time New Belgium Brewing employee Christine Perich will leave her CEO post in November. She has been at the help for about a year. New Belgium Brewing Company president and CEO Christine Perich will leave the Fort Collins company next month. She became CEO last year, but has been an employee of New Belgium since 2000. As CEO Perich oversaw the recent opening of a New Belgium brewery in Asheville, N.C.