 PITTSBURGH--BUSINESS WIRE--Limbach Holdings, Inc. Nasdaq: LMB Limbach or the Company, a provider of building infrastructure services, with an expertise in the design, installation and maintenance of HVAC and mechanical, electrical, and plumbing systems for a diversified group of commercial and institutional building owners, today announced the pricing of its previously announced underwritten public offering of 1,783,500 shares of its common stock at a price to the public of 12.00 per 