 HOUSTON, June 11, 2021 GLOBE NEWSWIRE -- IES Holdings, Inc. IES NASDAQ: IESC announced today that it has acquired the remaining 20 ownership interest in STR Mechanical, LLC STR, a Charlotte, North Carolina-based provider of commercial and industrial mechanical services. IES had previously acquired an 80 interest in STR in 2016. STR and its subsidiary Technical Services II, LLC provide heating, ventilation and air conditioning HVAC maintenance, repair, and replacement services as well as temperature control system installations throughout the Carolinas and Virginia. 