STG Group, Inc., listed under ticker GDEF, is the operating company that resulted from the de-SPAC transaction involving Global Defense & National Security Systems, Inc., a blank-check vehicle that completed its initial public offering in 2014 with a focus on the defense and national security sector. The company filed a 10-K with the Securities and Exchange Commission on March 25, 2015, reflecting its first annual report as a combined entity providing information technology and professional services to U.S. federal government and defense clients. The filing marks the transition from acquisition vehicle to active operating business in the government IT services space. Sign up at SpacDesk for full filing history, deal timelines, and SPAC analytics on GDEF and hundreds of similar transactions.