Alliance Technical Group (MSCP-backed) Acquires GBMc & Associates

Morgan Stanley Capital Partners Acquires Alliance Technical Group from Align Capital Partners

July 20, 2021

Environmental Services

Morgan Stanley Capital Partners (MSCP) has acquired a controlling interest in Alliance Technical Group, a Decatur, Alabama–based provider of air emissions testing, monitoring and analytical services, from Align Capital Partners. MSCP will partner with Alliance's management led by CEO Chris LeMay to continue geographic expansion and M&A-driven growth while the management team and employees retain a meaningful ownership stake.

Alliance Technical Group Acquires Environmental 360

June 20, 2025

Environmental Services

Alliance Technical Group acquired Environmental 360, LLC to expand its environmental consulting, monitoring, and compliance capabilities. The deal strengthens Alliance's onsite field services and emissions/compliance monitoring offerings for industrial clients across the United States.

Blackstone Energy Transition Partners Acquires Alliance Technical Group

January 6, 2026

Environmental Services

Funds affiliated with Blackstone Energy Transition Partners and other Blackstone funds have acquired Alliance Technical Group (ATG), a Decatur, Alabama–based provider of environmental testing, monitoring and compliance services. ATG operates more than 60 offices and labs across the U.S. and Canada with over 2,200 employees; terms were not disclosed.

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.

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 Calverton, New York–based provider of waste, industrial, and environmental services, from GenNx360 Capital Partners. Miller operates 30 locations across the United States serving over 1,800 customers; Coalesce plans to invest in human capital, technology, and add-on acquisitions to expand the company's branch and facility network.

Alfar Capital and Walter Capital Partners Acquire MSP Corp and Merge with Groupe Access

May 2, 2023

IT Services

Alfar Capital and Walter Capital Partners completed a transaction valued at over $100 million to acquire MSP Corp and simultaneously merge it with Groupe Access, creating a coast-to-coast Canadian managed-services platform under the MSP Corp name. The combined entity will be majority-owned by Alfar and Walter, with BDC Capital retaining a minority stake and management/employees holding more than 10%; the new platform will be led by former Groupe Access CEO Habib Malik.