Limbach Holdings, Inc., trading under the ticker LMB, is a building systems contractor specializing in mechanical, electrical, and plumbing engineering services for commercial and institutional clients. The company reached the public markets through a SPAC de-merger transaction, with its December 23, 2015 Form 8-K filing — accession number 0001144204-15-072574 — representing a material disclosure during the active phase of that process ahead of the transaction's 2016 close. Operating in the construction and engineering services sector, Limbach has since remained a publicly traded entity focused on infrastructure and facility systems across the United States. For complete filing history, deal terms, and sponsor data on LMB and hundreds of other SPAC transactions, sign up for full access at SpacDesk.