Generational Group Advises on the Sale of HSE Consulting Services, LLC to Mainline Environmental
Generational Group, one of North America’s leading mergers and acquisitions advisory firms for privately held companies, has announced the successful sale of HSE Consulting Services, LLC to Mainline Environmental. The transaction officially closed on November 3, 2025, marking an important milestone for both organizations as they strengthen their capabilities and expand their reach within the environmental health and safety sector.
HSE Consulting Services, LLC, headquartered in Cicero, New York, has been a trusted expert in occupational health, safety, and environmental (EHS) consulting for nearly three decades. Since its founding in 1997, the company has built a strong reputation across New York State for helping businesses reduce risk, maintain compliance with federal and state regulations, and protect the well-being of employees and surrounding communities. Over the years, HSE has distinguished itself through a hands-on, client-focused approach and a suite of specialized services designed to meet the evolving demands of diverse industries.
The firm offers a broad range of EHS services, including asbestos and mold consulting, industrial hygiene testing, lead-based paint inspections, environmental compliance consulting, safety audits, and jobsite oversight. With certified professionals and an in-house laboratory, HSE Consulting Services delivers reliable analysis and fast turnaround times—ensuring clients receive timely, accurate data to support critical health and safety decisions. Their portfolio also includes training programs, equipment rental, and remediation support, allowing them to deliver complete, practical, and cost-effective solutions. HSE’s history of excellence and its deep technical expertise made the company a strong strategic fit for Mainline Environmental.
Mainline Environmental, based in Mine Hill Township, New Jersey, is a full-service environmental consulting and remediation firm widely known for its commitment to creating safer, healthier spaces for businesses, institutions, and communities. The acquisition of HSE Consulting Services enhances Mainline Environmental’s service capabilities and expands its footprint further into New York State, strengthening its position in the northeastern U.S. market.
Mainline provides a comprehensive array of environmental services, including asbestos, lead, and mold inspections; indoor air quality assessments; environmental testing; and remediation planning. Their certified team of environmental specialists brings extensive experience in regulatory compliance, risk mitigation, and environmental health. The company also offers training programs and technical support to help clients maintain safe operations and adhere to complex regulatory standards. By integrating HSE’s expertise, laboratory capabilities, and strong regional presence, Mainline Environmental is positioned to offer an expanded service portfolio grounded in accuracy, reliability, and client-centered solutions.
The transaction was facilitated by Generational Group’s experienced M&A team. Executive Managing Director of M&A for the Eastern Region, David Fergusson, led the advisory efforts, supported by Generational Affiliate Ray Palombi and Managing Director of M&A, Corey Painter. Their collaborative work ensured a smooth and efficient process from initial engagement through final closing. Additionally, Senior Managing Director, Thomas Hamm, and Senior M&A Advisor, Dave Heymann, played key roles in developing the initial relationship with HSE Consulting Services, helping the company identify the right partner to support its next phase of growth.
Generational Group CEO, Ryan Binkley, expressed his enthusiasm for the transaction, emphasizing the shared mission and values of the two organizations joining forces. “We’re proud to have guided two exceptional companies toward a partnership that builds on their shared values and ambitions,” Binkley said. “This transaction reflects Generational Group’s ongoing dedication to fostering collaborations that drive meaningful, lasting growth. Both companies bring decades of expertise to the table, and we’re confident that this partnership will deliver long-term benefits for their clients, employees, and the communities they serve.”
Generational Group, headquartered in Dallas, Texas, is a leading full-service M&A advisory firm specializing in helping privately held businesses maximize their value. With more than 300 professionals across 16 offices in North America, the firm provides a comprehensive suite of services that extends far beyond traditional M&A support.
Generational assists business owners at every stage of strategic growth and transition, offering services such as exit planning education, business valuation, value enhancement strategies, strategic growth consulting, digital solutions, and wealth management. This holistic approach ensures that clients receive knowledgeable guidance tailored to their unique goals—whether they are preparing for growth, succession, or an eventual sale.
As the firm celebrates its 20th year, Generational Group continues to set industry benchmarks. It has successfully closed more than 1,700 transactions and has ranked #1 or #2 in all LSEG league tables for deals valued between $25 million and $1 billion for three consecutive years (2022, 2023, and 2024). These achievements highlight the firm’s consistent performance, deep market knowledge, and unwavering commitment to client success.
The company’s excellence has been recognized by numerous industry bodies. In 2024, Generational Group was named USA Investment Banking Firm of the Year by the Global M&A Network. It also received the prestigious Investment Banking Firm of the Year award from The M&A Advisor in both 2022 and 2024—further validating its leadership and track record in the middle-market advisory space.
With this transaction, Generational Group once again demonstrates its expertise in guiding high-quality businesses through important transitions, ensuring successful outcomes that benefit founders, buyers, and stakeholders alike.
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