Golan Christie Taglia LLP added Matthew M. Showel as partner in its commercial and business litigation group.Showel represents companies and individuals in state and federal courts in arbitration and government investigations across a variety of matters including contracts, trade secrets, data privacy, partnership disputes, fiduciary, construction, employment, regulatory and securities.• Greenberg Traurig LLP added real estate practice attorney Melissa Vandewater as a shareholder in its Chicago office. Vandewater …