 PHOENIX, June 29, 2021 PRNewswire -- Centuri Group, Inc. Centuri, a wholly-owned subsidiary of Southwest Gas Holdings, Inc. NYSE: SWX, today announced it has entered into a definitive agreement to acquire Riggs Distler Company, Inc. and its affiliates Riggs Distler. Founded in 1909, and based in Cherry Hill, New Jersey, Riggs Distler has extensive relationships and long-term Master Service Agreements MSA with nearly all of the major investor-owned electric utilities in the Northeast and Mid-Atlantic regions and provides unionized installation and repair services to its utility customers. 