After eight years at the helm of Pennington Biomedical Research Center, John Kirwan is stepping away from his role as executive director. In a letter sent to Pennington staff, Kirwan writes tha… Already an INSIDER? Sign in. We are glad you enjoy reading Business Report. Continue reading this story and get ACCESS to all our content from any device with a subscription now. Click to become an INSIDER for under $2.50 a week Get access to more than a decade of story archives. Get access to our searchable data center of TOP LISTS. Get exclusive content only available to INSIDERS. Already an INSIDER? Sign in ...read more read less