SK Capital Partners Acquires Milestone Environmental Services

I Squared Capital To Acquire Milestone Environmental From SK Capital Partners

July 9, 2026

Environmental Services

I Squared Capital entered into a definitive agreement to acquire Milestone Environmental, an independent energy and industrial waste management platform, from SK Capital Partners. The deal is expected to close in 4Q 2026, subject to customary closing conditions and regulatory approvals; financial terms were not disclosed.

Coalesce Capital Acquires Miller Environmental Group

September 11, 2024

Environmental Services

Coalesce Capital has entered into a definitive agreement to acquire Miller Environmental Group, a waste, industrial, and environmental services provider operating across the United States. The transaction is being purchased from GenNx360 Capital Partners, and financial terms were not disclosed.

Caymus Equity Partners Acquires Quality Environmental Services

November 15, 2023

Environmental Services

Caymus Equity Partners LLC has acquired Quality Environmental Services, LLC, a Beaverton, Michigan–based provider of environmental remediation services. The investment — Caymus Equity's third from Fund II and fifteenth platform investment overall — will provide capital to expand Quality's service offerings, enter new geographies and verticals, and pursue strategic acquisitions.

Morgan Stanley Capital Partners Acquires Apex Companies from Sentinel Capital Partners

February 1, 2023

Environmental Services

Investment funds managed by Morgan Stanley Capital Partners (MSCP) have acquired Apex Companies, a Rockville, Maryland–based environmental consulting and engineering firm, from Sentinel Capital Partners. Sentinel will retain a minority stake post-closing; financial terms were not disclosed. Apex operates over 1,100 professionals across ~50 offices and provides services in stormwater compliance, water resources, ESG, health & safety, transportation, and civil engineering.

Keystone Capital Partners with Pinchin Ltd. and PM Environmental to Build North American Environmental Services Platform

February 22, 2022

Environmental Services

Keystone Capital Management, L.P. has entered into an investment partnership with Canadian environmental consulting firm Pinchin Ltd. and U.S.-based PM Environmental, LLC to combine capabilities and expand geographic reach across North America. Terms were not disclosed; the deal creates a PE-backed platform aimed at accelerating add-on acquisitions, capability expansion, and broader service coverage for corporate real estate, developers and government clients.

GenNx360 Capital Partners Acquires Miller Environmental Group

March 20, 2019

Environmental Services

GenNx360 Capital Partners acquired a majority interest in Miller Environmental Group (MEG), a Calverton, New York-based environmental services company that provides emergency response, waste transportation and disposal, remediation, and industrial and marine services. Mark Miller (then owner/President/CEO) will remain on MEG's board and step away from day-to-day operations while GenNx360 plans to accelerate growth through operational improvements and strategic add-on acquisitions; Brown Gibbons Lang & Company served as exclusive financial advisor.