HOUSTON, Nov. 20, 2015 (GLOBE NEWSWIRE) — Integrated Electrical Services, Inc. (or “IES”) (NASDAQ:IESC) today announced that a wholly-owned subsidiary of IES has acquired all of the shares of stock of Shanahan Mechanical and Electrical, Inc. (“Shanahan”), a Lincoln, Nebraska-based provider of mechanical and electrical contracting services.  Shanahan will operate as a subsidiary in IES’s Commercial & Industrial segment and will continue to operate under the Shanahan name. Read More…