STG Group, Inc., trading under the ticker GDEF on the Nasdaq, was a special purpose acquisition company organized to pursue a business combination in the defense and national security sector. The SPAC operated under the name Global Defense & National Security Systems, Inc. prior to completing its merger with STG Group, a provider of cybersecurity, advanced analytics, and technology services to U.S. federal government agencies. The company filed an 8-K with the SEC on November 15, 2017, reflecting a material corporate event following its business combination, which had been completed earlier that year. With roots in the government IT and defense services market, the combined entity represented a niche play on federal technology modernization. Visit SpacDesk and sign up for full access to filings, deal timelines, and sponsor data on GDEF and hundreds of other SPAC transactions.