Gregas Marketing Ventures Ltd is a South Sudan-based company reportedly in the marketing industry. T-Alpha Investments was a shareholder in Gregas Marketing Ventures Ltd as of May 14, 2015.[159] Mary Ayen Mayardit, wife of President Salva Kiir, and Gregory Vasili Dimitry, Kiir’s brother-in-law, held 30% and 26%, respectively, of T-Alpha Investments as of November 7, 2013.[1]