Limbach Holdings, Inc.

Limbach Holdings, Inc. (the Company, we or our ), a Delaware corporation headquartered in Warrendale, Pennsylvania, is a building systems solutions firm that designs, delivers, and maintains mechanical (heating, ventilation, and air conditioning), electrical, plumbing, and controls ( MEPC ) systems. The Company partners with building owners and operators of mission-critical facilities across healthcare, industrial and manufacturing, data centers, life sciences, higher education, and cultural and entertainment markets. With approximately 1,500 team members across 21 offices throughout the Eastern and Midwestern regions of the United States, the Company strives to be an indispensable partner by combining its national capabilities with strong local execution and talent to deliver proactive, safe, and reliable solutions for complex facilities. Operating on a connected platform, the Company integrates engineering expertise with field execution to provide customized MEPC infrastructure solutions that address both operational and capital project needs, optimizing performance, enhancing reliability, and ensuring long-term safety. 2025 Highlights In 2025, the Company: Produced record annual revenue of $646.8 million and a record annual gross profit of $169.3 million. Increased its revenue generated from the ODR segment (as defined below) by 40.6% (versus 2024), achieving its previously announced 2025 ODR segment revenue target of 70% - 80% of total consolidated revenue at 75.1%. Increased diluted earnings per share by 25.7% (versus 2024) to $3.23.