May River Capital

May River Capital, established in 2012 and headquartered in Chicago, is a private equity firm specializing in lower middle market investments. It focuses on industrial growth businesses in the United States, typically investing between $15 million and $40 million per transaction. The firm's approach combines a disciplined, experienced strategy with a strong emphasis on the human element in business.

Mitch Bardon

Principal

Daniel N. Barlow

Co-Founder and Partner

Alex Brown

Associate

Sam Goldsberry

Senior Associate

Chip Grace

Founding Partner

Stephen Griesemer JD

Co-Founder and Partner

Patrick St. John

Managing Director

Kenny Kim

Associate

Angela McCoy

Principal

Patrick McVickers

Vice President

James Napier

Associate

Philip Ramsbottom

Vice President

Patrick Wasser

CFO and CCO

Clayton Weirather

Associate

13 past transactions

Global Pump Solutions

Acquisition in 2025
Global Pump Solutions consists of industrial metallic, fiberglass and thermoplastic centrifugal pump brands.

Cashco

Acquisition in 2024
Cashco, Inc. is a manufacturer and marketer of a diverse range of industrial control products. Its offerings include control valves, regulators, controllers, pressure and vacuum relief vents, flame and detonation arrestors, and tank equipment. The company serves various industries such as chemical, terminal storage, oil and gas, electronics, food, and pharmaceuticals. In addition to its product line, Cashco provides replacement parts and repair services, ensuring comprehensive support for its clients. Through a global network of offices and representatives, Cashco is positioned to meet the needs of its customers across multiple sectors.

RLE Technologies

Acquisition in 2023
RLE Technologies is a provider of specialized products and services for critical facilities, primarily data centers. They manufacture and supply facility monitoring, leak detection, and airflow management solutions, along with system integration products. Their offerings aim to ensure the optimal performance, safety, and efficiency of these facilities.

Boston Centerless

Private Equity Round in 2023
Boston Centerless is a manufacturer and distributor based in Woburn, Massachusetts, specializing in precision ground bar materials and centerless grinding services. The company focuses on delivering products with extremely close tolerances, catering to industries such as medical, dental, aerospace, and defense. In addition to its core offerings, Boston Centerless provides material testing and validation, along with supply chain management solutions. By supplying precision metal bars tailored for mission-critical applications, the company enables its customers to achieve significant downstream savings.

Unibloc Pump

Acquisition in 2021
Unibloc Pump is a provider of displacement pumps, strainers, valves, bubble traps, and other solutions for sanitary flow control applications. Unibloc has provided the food and beverage, meat and poultry, pharmaceutical, and more industries with precision-engineered sanitary pumps, strainers, and valves to take on the toughest jobs and the premier designers of simple, easy-to-clean in place (CIP) or clean out of place (COP) pumps that fight downtime, achieve a lower cost of operation and meet deadlines with confidence.

PaperTech

Acquisition in 2020
PaperTech is an innovative manufacturer specializing in sustainable, dual-ovenable paperboard trays and bowls tailored for the frozen food and food service markets. The company serves various sectors, including frozen food providers, commercial bakeries, quick-serve restaurants, and the "take and bake" pizza industry. By focusing on high-quality packaging solutions, PaperTech aims to meet the needs of leading food brands, contract food packagers, and institutional feeding programs, including those catering to schools and senior citizens.

NSL Analytical Services

Acquisition in 2020
NSL Analytical Services, Inc. is a commercial materials testing laboratory based in Cleveland, Ohio, established in 1945. The company specializes in a wide array of testing services, including organic and polymer analysis, elemental and chemical testing, thermal and physical analysis, and compositional evaluation. NSL provides analytical testing for quality control, failure analysis, product performance, and material selection across various sectors such as aerospace, automotive, electronics, medical devices, and nuclear power generation. Its services encompass testing for metals, alloys, plastics, composites, and ceramics in different forms, including powdered, solid, and liquid. The company is committed to delivering accurate, reliable, and repeatable testing results, fostering strong customer relationships grounded in trust.

Kason Corporation

Acquisition in 2019
Kason Corporation is a leading manufacturer of screening and processing equipment designed for bulk solid materials and slurries. Founded in 1967 and based in Millburn, New Jersey, with additional offices in St-Laurent, Canada, and Cheshire, United Kingdom, Kason develops a diverse range of products, including circular vibratory screeners, centrifugal sifters, static sieve screeners, fluid bed dryers, and various mixing and blending machines. The company specializes in applications such as solids/solids and solids/liquids separation, agglomerating, drying, cooling, and powder coating. Kason also provides granulizing systems suited for chemical, food, and pharmaceutical industries, alongside replacement and aftermarket parts. Its comprehensive offerings cater to multiple sectors, including food manufacturing, pharmaceuticals, chemical processing, beverage processing, and cannabis. Kason is recognized for its commitment to safety, quality, and sanitary standards, bolstered by nearly half a century of innovative design and experience.

Marion Process Solutions

Acquisition in 2019
Marion Process Solutions, Inc. is a manufacturer of industrial mixers, blenders, and microwave vacuum drying systems, catering to various industries including food, nutraceutical, mineral, plastic, chemical, and biomass. The company offers a diverse range of products, including specialized mixers for different applications such as bakery ingredients, nutraceuticals, and recycled materials, as well as advanced drying systems for various powders and compounds. Marion Process Solutions focuses on delivering custom-manufactured processing solutions tailored to meet the specific requirements of its clients. In addition to its equipment, the company provides parts and servicing for its machinery, ensuring ongoing support for its customers. Founded in 1938 and based in Marion, Iowa, Marion Process Solutions was previously known as Marion Mixers, Inc.

Dickson

Acquisition in 2018
Dickson, Inc. is a manufacturer specializing in testing and measurement compliance products, primarily focused on monitoring environmental conditions. Founded in 1923 and based in Addison, Illinois, the company develops a range of devices, including data loggers, chart recorders, indicators, and sensors, as well as a cloud-based environmental monitoring system. Dickson's products are essential for ensuring that critical environments, such as those in the pharmaceutical, healthcare, aerospace, and food sectors, maintain proper conditions for safety and compliance. The company also offers validation, temperature mapping, and installation solutions to support its clients in adhering to regulatory requirements.

BJM Pumps

Acquisition in 2017
BJM Pumps supplies a wide variety of submersible pumps and pump accessories for many different applications. Some of these products include slurry pumps, stainless steel pumps, corrosion resistant pumps, sump pumps, sewage pumps, trash pumps, sludge pumps, non-clog pumps, solids handling pumps, shredder pumps, vortex pumps, submersible dewatering pumps, sand pumps, agitator pumps, hydraulic pumps, explosion proof pumps, utility pumps and specialty pumps such as 12 Volt pumps and residue pumps.

MECA & Technology Machine

Acquisition in 2016
MECA & Technology Machine, Inc. is a manufacturer based in Green Bay, Wisconsin, specializing in mechanically engraved cylinders, rollers, printing sleeves, and precision machining products for the industrial printing, coating, and web converting sectors. Founded in 1983, the company produces a variety of products including flexographic printing sleeves, rubber rolls, custom rolls, tight tolerance machined components, gears, and precision rollers. It also offers composite plate sleeves and aluminum and carbon fiber anilox sleeves. With a workforce of approximately 50 employees, MECA & Technology Machine is committed to providing high-quality engineering solutions for its clients in the packaging and converting industries. Dean J. Re serves as the president and CEO.

Hunt Valve Company

Acquisition in 2016
Hunt Valve Company, Inc., operating under the name Union Flonetics, is a manufacturer and designer based in Salem, Ohio, specializing in fluid power engineering components and parts. The company focuses on producing duty valves, cylinders, and engineered systems. Its expertise includes engineering and design processes utilizing solid modeling, flow and stress analysis, and advanced manufacturing techniques such as machining and welding. Hunt Valve also conducts hydrostatic and non-destructive testing, catering to markets including the navy, industrial primary metals, and power generation.
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