Mark Steenhoek

The Stephens Group LLC (Stephens Group) is an independent Private Equity firm founded in 2006 by W. R. Stephens and Elizabeth Stephens Campbell. The firm is headquartered in Little Rock, Arkansas.

Part of Catalyst Acoustics Holdings, Inc., Catalyst Acoustics Group is the parent company of an elite group of acoustic, seismic, vibration, and noise control companies. The company is based in Agawam, MA. The independent brands, channels to market, products, and services offered by each business remain unique, while leveraging the scale, deep functional expertise, broad channel reach, and significant financial resources. Joe Lupone has been the CEO of the company since 2020.

Pearlman Group LLC develops and distributes branded abrasives, diamond tools and equipment. The company is headquartered in Waltham, WA.

McKinsey & Co., Inc. provides management consulting services. It specializes in design, marketing and sales, analytics, operations, transformation and restructuring, risk, strategy and corporate finance, and sustainability and resource productivity. The company was founded by James O. McKinsey in 1926 and is headquartered in New York, NY.

Quantumblack Visual Analytics Ltd. provides data analytics consulting services. It specializes in profitability variance, delivery performance, asset maintenance, product development, predictive maintenance, auto development, client engagement, and branch optimization. The company was founded by Simon Guy Williams in 2009 and is headquartered in London, the United Kingdom.

Houghton Mifflin Harcourt Co. engages in the provision of pre-K-12 education solutions, delivering content, technology, services, and media. It operates through the following segments: Education and HMH Books & Media. The Education segment provides educational products, technology platforms and services. The HMH Books & Media segment primarily develops, markets and sells consumer books in print and digital formats and licenses book rights to other publishers and electronic businesses. The company was founded in 1832 and is headquartered in Boston, MA.

Barco Uniforms, Inc. esigns and develops medical and spa professional wear, and corporate uniforms. It offers medical wear apparel, including tops, pants, jackets, and maternity apparel, as well as lab coats. The company was founded in 1929 by Morris Barker and is headquartered in Gardena, CA.

Protiviti, Inc. provides global business consulting and internal auditing. It offers business performance improvement, data management and advanced analytics, digital transformation, forensic, internal audit and financial advisory, managed business services, risk and compliance, technology consulting, and transaction services. The company was founded in May 2002 and is headquartered in Menlo Park, CA.