Stanley Capital Partners Leads Majority Investment in SePRO Corporation with Goldman Sachs Alternatives as Minority Co-Investor

SePRO Corporation Acquires Earth Science Laboratories (ESL)

April 1, 2026

Environmental Services

SePRO Corporation announced the acquisition of Earth Science Laboratories, Inc. (ESL), a provider of advanced water treatment technologies. The deal is intended to expand SePRO’s science-led water treatment portfolio across drinking water, water conveyance infrastructure, and invasive species management, by integrating ESL’s products and capabilities into SePRO’s platform.

SePRO Corporation Acquires Resolve Hydro

September 9, 2025

Environmental Services

SePRO Corporation, a leader in water and land restoration, has acquired Resolve Hydro, a specialist in satellite-based diagnostics for harmful algal blooms and aquatic invasive weeds. The acquisition expands SePRO's digital strategy by adding satellite diagnostics capabilities to improve monitoring, diagnosis and tracking of freshwater changes for customers across public and private water management sectors.

SePRO Acquires Green Eyes Environmental Monitoring Solutions

April 22, 2025

Environmental Services

SePRO Corporation, a portfolio company of Stanley Capital Partners with backing from Goldman Sachs Alternatives, has acquired Green Eyes Environmental Monitoring Solutions. The deal integrates Green Eyes' NuLAB automated nutrient-monitoring technology into SePRO's environmental services platform to expand real-time water quality diagnostics; financial terms were not disclosed and Green Eyes founder Vincent Kelly will remain with the business.

Palladium Equity Partners Acquires Superior Environmental Solutions

August 3, 2023

Industrial Services

Palladium Equity Partners has acquired Superior Environmental Solutions (SES) from Rosewood Private Investments. SES, headquartered in Cincinnati, Ohio, provides industrial and environmental services including emergency response, hydro-blasting, vacuum truck services, product destruction, recycling and waste disposal across more than 25 locations and employs over 500 people; Palladium said it will partner with SES management to pursue organic and inorganic growth in a fragmented market.

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.

Excellere Partners Makes Strategic Investment in SePRO Corporation

February 12, 2019

Agriculture

Excellere Partners, a Denver-based private equity firm, has made a strategic growth investment in SePRO Corporation to support the company's next phase of growth. The capital will be used to accelerate commercialization of SePRO's pipeline, expand infrastructure and R&D capabilities, and pursue complementary partnerships and acquisitions in the agricultural and aquatic specialty chemicals markets.