US accounting and consulting practice Armanino has expanded its network by bringing south-east-focused operator MSTiller (MST) into its organisation. Established in 1956, MST works with middle-market companies, family owned enterprises and private foundations across a variety of sectors. The company, with around 110 professionals, operates from offices in Georgia and New York. The move is expected to deepen Armanino’s capabilities in tax, audit and advisory work, while extending its presence in the sou ...