National Holdings Corporation announced the expansion of the National Securities team with two key hires. Mr. Jeffrey Sacher joins National Securities Corporation as a Senior Managing Director of OPN Capital Markets. Previously, Mr. Sacher served as a Senior Banker at Goldman Sachs, Needham & Co, Aegis Capital and Brean Capital. In addition, Mr. Sacher was the Chief Financial Officer for ViaCell, a stem cell company sold to PerkinElmer. Mr. Gregory Kouvelas joins National Securities Corporation as a Senior Managing Director of Technology Investment Banking. Previously, Mr. Kouvelas served as a Senior Banker at Wunderlich Securities, Seven Hills Partners, ING and Robertson Stephens.