8-K current report · filed Sep 1, 2026

Limbach Holdings, Inc. (LMB) 8-K Current Report: September 1, 2026

Item 7.01Item EX-99.1LMB overview

Short answer

Limbach Holdings, Inc. (LMB) filed an 8-K current report with the SEC on September 1, 2026 reporting Item 7.01 (Regulation FD Disclosure), Item EX-99.1 (Exhibit EX-99.1). Acquisition of Madison-based mechanical contractor 1901 Inc. closed September 1, 2026.

Limbach Holdings, Inc. 8-K event analysis

AI summary of each reported item and its exhibits

Item 7.01 · Regulation FD Disclosure

  • Acquisition of Madison-based mechanical contractor 1901 Inc. closed September 1, 2026
  • Initial purchase price $63.0 million funded through cash and expanded revolving credit borrowings
  • Performance-based earnouts up to $6.0 million payable over two years if targets are achieved
  • Transaction adds leverage exposure and contingent acquisition payments for shareholders

Item EX-99.1 · Exhibit EX-99.1

  • Acquisition of 1901 Inc. expands Limbach’s Midwest footprint and creates its largest electrical operation
  • $63 million purchase price funded with cash and revolver borrowings, plus earn-outs up to $6 million
  • 1901 adds approximately 450 employees and capabilities across mechanical, electrical, plumbing, controls, fabrication, and utilities
  • 2027 expected contribution of approximately $140 million revenue and $11 million adjusted EBITDA
  • Broader exposure to healthcare, higher education, industrial, advanced manufacturing, life sciences, and technology markets

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