Carl Johan Hagman, CEO Stena Line and Stena Rederi AB 2015-07-16 by Lena Göthberg 1 Comment Carl Johan Hagman, CEO Stena Line and head of all maritime activities in the Stena Group. Carl Johan has a long and successful background within the international shipping industry. Continue Reading … http://traffic.libsyn.com/shippingpodcast/003_Carl_Johan_Hagman.mp3