10/16/2026
Calfee congratulates our client, HMC Service Company/Hussung Mechanical Contractors (collectively “HMC”), on its recently completed investment transaction with Optimum Energy.
HMC, a fourth-generation family-owned company, is a Louisville, Kentucky-based full-service mechanical infrastructure solutions provider for healthcare systems, universities, manufacturers, data centers, and mission-critical facilities across the Mid-South, serving the region for more than 60 years. As part of the Optimum Energy group, Hussung will continue operating under its own name as HMC.
Optimum Energy, a Bernhard Capital Partners portfolio company, is a global leader in holistic infrastructure solutions. The addition of HMC’s mechanical contracting and field service expertise expands Optimum Energy’s in-house ex*****on capability and strengthens its ability to self-perform across every phase of the infrastructure lifecycle.
Calfee was pleased to represent HMC in this transaction. The Calfee transaction team was led by Firm Chairman and Corporate and Finance Partner Douglas A. Neary and Partner and Corporate and Finance Practice Co-Chair Brent Pietrafese, and included Partners Jennifer Walwyn Colvin, Steven Day, Ryan Falk, Mike Gall, Maura Hughes, Senior Attorney Christopher Ward, Senior Counsels Erik Nielsen and Victoria Diaz, and Associate Attorneys Nick Bonaminio, Nicolette Cregan, Lauren Christine Kulik, Dustin Likens and Jonathan Ziga.
Read the full release here: https://www.calfee.com/newsroom-news-hmc-sale-optimum-energy102026