Mark W DeYoung

Mark W. DeYoung serves as our Chairman and Chief Executive Officer. Mr. DeYoung served as President and Chief Executive Officer of ATK since February 2010 and serves as a director of Orbital ATK, Inc. From 2002 to February 2010, he was President of ATK’s Armament Systems Group, holding the title of Senior Vice President and President, Armament Systems (formerly Ammunition Systems) from 2006 to February 2010, Senior Vice President, Ammunition Systems, from 2004 to 2006, and Group Vice President, Ammunition Systems, from 2002 to 2004. Mr. DeYoung is a lifetime member of the NRA, and has current and past memberships in Ducks Unlimited, Wild Sheep Foundation, Pheasants Forever, Rocky Mountain Elk Foundation, Mule Deer Foundation and Quail Forever. He has more than 25 years of experience in leading organizations in the defense, aerospace and commercial sectors.