BusinessAwards Forty Under 40: Mark Marionneaux By Penny Font - November 26, 2014 FacebookTwitterLinkedinEmailPrint MARK MARIONNEAUX, 35 Vice president, Bank of Zachary Mark Marionneaux As the old saying goes, “Be the change you want to see in the world.” It’s why Mark Marionneaux volunteers in his commu… Already an INSIDER? Sign in.