Limbach Holdings, Inc. LMB

What this company does

Limbach Holdings, Inc. designs, delivers, and maintains mechanical (heating, ventilation, and air conditioning), electrical, plumbing, and controls (MEPC) systems, and is headquartered in Warrendale, Pennsylvania. As of December 31, 2025, it had approximately 1,500 team members, including approximately 600 full-time salaried team members and approximately 900 technician and craft team members, some of whom are represented by labor unions. It operates in two segments, Owner Direct Relationships (ODR) and General Contractor Relationships (GCR). Through its ODR segment, it performs owner direct projects and provides maintenance or service primarily on MEPC systems, along with specialty contracting projects to existing buildings direct to, or assigned by, building owners or operators. For each of the years ended December 31, 2025, 2024 and 2023, no customer in its ODR segment accounted for more than 10% of its consolidated revenue. Through its GCR segment, it manages new construction or renovation projects that involve primarily MEPC systems awarded to it by general contractors or construction managers.

Written from the business description in LIMBACH HOLDINGS, INC.'s annual report to the U.S. Securities and Exchange Commission, filed 2 March 2026. Every sentence was checked against that document before publication.