Astro Pak Acquires Clean Sciences LLC

The Stephens Group Acquires Astro Pak

February 5, 2025

Industrial Services

The Stephens Group, LLC has acquired Astro Pak LLC, a provider of high-purity and precision cleaning and cleanroom services for regulated industries. The investment positions Astro Pak to accelerate growth across end markets such as pharmaceuticals, biotechnology, semiconductors and aerospace while preserving the company’s culture and technical capabilities; Houlihan Lokey served as financial advisor to Astro Pak.

Angeles Equity Partners Acquires Data Clean (Sterile Science)

November 8, 2022

Industrial Services

An affiliate of Angeles Equity Partners has acquired Data Clean, LLC, a Des Plaines, Illinois–based provider of contamination control and decontamination services for data centers, cleanrooms and other critical environments. Angeles will partner with Data Clean's prior owners, Richard Hill and Dean Sirakides, who will retain an ownership stake as Angeles executes a buy-and-build strategy to consolidate the fragmented contamination-control services market.

Data Clean (Angeles Equity Partners Portfolio Company) Acquires Sealco LLC

November 15, 2023

Environmental Services

Angeles Equity Partners portfolio company Data Clean Corporation has acquired Sealco LLC, a Richardson, Texas-based critical environment cleaning business that serves data centers across the South and Southeast U.S. The add-on expands Data Clean’s contamination-control capabilities and extends its geographic presence into the Southeast data center market; terms were not disclosed.

Solenis Acquires Aqua ChemPacs

June 12, 2024

Manufacturing

Solenis, a global specialty chemicals producer, acquired Aqua ChemPacs, LLC, a Huntingdon Valley, Pennsylvania-based manufacturer of dissolvable concentrated liquid chemical packs, on June 10, 2024. The deal adds Aqua ChemPacs' eco-friendly ChemPacs technology and low-carbon-footprint packaging to Solenis' Diversey portfolio, expanding the company's institutional cleaning and sustainability capabilities.

Handshake Acquires Cleanlab

January 29, 2026

AI & Machine Learning

Handshake has acquired Cleanlab to integrate Cleanlab’s data-quality, confident learning, and LLM-evaluation research and technologies into Handshake’s talent and AI services. The acquisition positions Handshake to offer stronger data-quality and model-evaluation capabilities to frontier AI labs and enterprise customers, while Cleanlab’s open-source package will remain available under a more permissive Apache-2.0 license.

VaLogic Bio Acquires Air Systems Technologies (AST)

July 30, 2025

Healthcare Services

VaLogic Bio has acquired Air Systems Technologies (AST), a cleanroom certification and biosafety-testing specialist headquartered in Avon, Massachusetts. The acquisition expands VaLogic's service offerings for life sciences customers and strengthens its presence across the Mid-Atlantic and New England; AST will continue operating in Avon as VaLogic Bio.