Advanced Emissions Solutions (ADES) Merges With Arq Limited

Advanced Drainage Systems to Acquire StormTrap Investments from PSP Capital

October 5, 2026

Building Products

Advanced Drainage Systems entered into a definitive agreement to acquire StormTrap Investments from PSP Capital for approximately $530 million, or approximately $450 million net of the present value of expected tax benefits. The acquisition adds StormTrap’s engineered stormwater storage and treatment solutions to ADS’s portfolio, with closing expected in the fourth quarter of 2026 subject to customary conditions.

Centre Street Partners Launches Accretus and Acquires Atlanta Deferred Exchange (ADE)

June 9, 2026

Professional Services

Centre Street Partners (CSP) launched its real estate transaction services platform, Accretus, anchored by an acquisition of Atlanta Deferred Exchange (ADE), a Qualified Intermediary that facilitates 1031 exchanges. CSP described the deal as a control transaction majority buyout, with ADE founder Ron Raitz remaining a minority shareholder and joining the board.

Superior Environmental Solutions Acquires Arrowhead Environmental Services

May 20, 2024

Environmental Services

Superior Environmental Solutions (SES), a portfolio company of Palladium Equity Partners, has acquired Arrowhead Environmental Services, a Windsor, Virginia-based provider of environmental and industrial services. The add-on expands SES's geographic reach into the Southern Mid-Atlantic (Central Virginia), brings approximately 50 employees and 75 customers into the SES platform, and underscores Palladium's strategy of growing SES via tuck-in acquisitions; financial terms were not disclosed.

Apax Global Impact Fund Acquires Controlling Stake in Integrated Environmental Solutions (IES)

February 27, 2024

Software

The Apax Global Impact Fund, advised by Apax Partners LLP, will acquire a controlling stake in Integrated Environmental Solutions (IES), a climate‑tech company that provides building performance simulation software and consultancy to decarbonise the built environment. The investment—Apax Global Impact's first climate‑focused deal—will support IES's growth and scale its software and services to meet rising demand for sustainability solutions in building design, retrofit and operation.

Technosylva Acquires Atmospheric Data Solutions (ADS)

October 11, 2023

Data & Analytics

Technosylva has acquired Atmospheric Data Solutions (ADS) to integrate ADS's high-resolution atmospheric data and wildfire forecasting capabilities into Technosylva's wildfire risk mitigation platform. The deal strengthens Technosylva's offerings for electric utilities and fire agencies by expanding data, analytics, and forecasting capabilities to better predict and mitigate wildfire risk.

AEGIS Hedging Acquires Emission Advisors

January 5, 2022

Environmental Services

AEGIS Hedging Solutions has acquired Emission Advisors to add environmental market capabilities, enabling integrated procurement and management of environmental offsets alongside its commodity hedging services. The deal brings Emission Advisors' expertise in voluntary and compliance offsets, allowances, RECs, LCFS credits and RINs into AEGIS's technology and advisory platform, expanding its offerings for corporate compliance and voluntary environmental programs.