Private Equity Firm Business Services

Nonantum Capital Partners

Boston, Massachusetts, United States

Nonantum Capital Partners is a private equity firm led by experienced private equity and management executives. Founded in 2018 as a spin-out from Charlesbank Capital Partners, it invests in family- and founder-owned businesses, corporate carve-outs, and complex situations where personal partnership is critical to create significant equity value.

Focus Areas
Private equity / financial sponsor

Tracked deals

15

15 tracked deals across 2019-2025.

Recent pace

0

0 tracked deals announced in the last 12 months.

Deal mix

Addon

7 addon · 6 buyout · 2 recapitalization

Nonantum Capital Partners Acquisition Volume by Year

Last 7 years

Acquisition volume by year Annual acquisition counts for the last 7 years for Nonantum Capital Partners. 2 2019 2 2020 2 2021 3 2022 1 2023 2 2024 3 2025

Supporting Data

Recent Transactions

Showing the 12 most recent of 15 tracked deals for Nonantum Capital Partners.

  • Helix Traffic Solutions Acquires Highway Safety Services
    August 4, 2025
    Buyer
    Helix Traffic Solutions, Nonantum Capital Partners
    Target
    Highway Safety Services
    Seller
    Mike Madrid (founder and former owner)
    Industry
    Infrastructure
    Location
    Indiana, United States
    Type
    Addon

    Helix Traffic Solutions, majority-owned by Nonantum Capital Partners, has acquired Highway Safety Services of Lafayette, Indiana. The add-on expands Helix's footprint in Indiana's traffic safety market (traffic control, pavement marking, flagging and equipment sales/rentals); transaction terms were not disclosed.

  • Nonantum Capital Partners Acquires MSI Express from HCI Equity Partners
    March 24, 2025
    Buyer
    Nonantum Capital Partners
    Target
    MSI Express
    Seller
    HCI Equity Partners
    Industry
    Food & Beverage
    Location
    Indiana, United States
    Type
    Buyout

    Nonantum Capital Partners, a Boston-based middle-market private equity firm, has acquired MSI Express, a Portage, Indiana–headquartered co-manufacturer and co-packer for food and beverage brands, from HCI Equity Partners. The deal closed March 24, 2025; financial terms were not disclosed. Nonantum said it will support continued growth and scaling of MSI's multi-facility operations.

  • Helix Traffic Solutions Acquires Mels Electric
    February 3, 2025
    Buyer
    Helix Traffic Solutions, Nonantum Capital Partners
    Target
    Mels Electric
    Seller
    Gibson & Associates, Jeff Gibson (former owner)
    Industry
    Infrastructure
    Location
    Texas, United States
    Type
    Addon

    Helix Traffic Solutions, a portfolio company majority-owned by Nonantum Capital Partners, has acquired Mels Electric of Wilmer, Texas. The add-on expands Helix's traffic safety infrastructure capabilities and strengthens its footprint in the Dallas–Fort Worth market; transaction terms were not disclosed.

  • a360inc Acquires ProVest
    July 31, 2024
    Buyer
    a360inc, Morgan Stanley Investment Management, Knox Capital, Nonantum Capital Partners
    Target
    ProVest
    Industry
    Legal Services
    Location
    Florida, United States
    Type
    Buyout

    a360inc, a San Antonio–based legal and credit risk technology and outsourcing provider, has acquired ProVest, a Tampa-based process and litigation information services firm that supports creditors, mortgage lenders, servicers and law firms. The transaction included a concurrent investment in a360inc by funds managed by Morgan Stanley Investment Management, Knox Capital and Nonantum Capital Partners to support expanded service offerings and technology integration.

  • Momentum Environmental Acquires T&R Environmental
    May 21, 2024
    Buyer
    Momentum Environmental, LLC, Nonantum Capital Partners
    Target
    T&R Environmental
    Industry
    Environmental Services
    Location
    New York, United States
    Type
    Addon

    Momentum Environmental, a PE-backed environmental services platform, acquired T&R Environmental, a Bath, New York-based provider of environmental and industrial cleaning services. The deal (completed alongside Momentum's investor Nonantum Capital Partners) will expand Momentum's service capabilities and footprint across the Northeast and Mid-Atlantic, with T&R Founder Brian Polmanteer joining Momentum as Senior Vice President.

  • Ridgemont Equity Partners Leads Recapitalization of RoadOne IntermodaLogistics
    January 5, 2023
    Buyer
    Ridgemont Equity Partners, Nonantum Capital Partners
    Target
    RoadOne IntermodaLogistics
    Industry
    Logistics & Distribution
    Location
    Massachusetts, United States
    Type
    Recapitalization

    Ridgemont Equity Partners led a recapitalization of RoadOne IntermodaLogistics alongside the company’s management and existing investor Nonantum Capital Partners. The transaction provides growth capital to support RoadOne’s geographic and service-line expansion, M&A activity, and technology investments; financial terms were not disclosed.

  • Nonantum Capital Partners Acquires LJP Waste Solutions
    September 19, 2022
    Buyer
    Nonantum Capital Partners
    Target
    LJP Waste Solutions
    Seller
    Aperion Management
    Industry
    Environmental Services
    Location
    Minnesota, United States
    Type
    Buyout

    Boston-based private equity firm Nonantum Capital Partners has acquired LJP Waste Solutions, a regional provider of non-hazardous solid waste, recycling and waste-to-energy services, from Aperion Management. Nonantum said it will partner with LJP's management to expand zero-landfill and traditional waste services and pursue complementary add-on acquisitions across the Midwest.

  • RoadOne IntermodaLogistics Acquires Wilmac Enterprises
    August 29, 2022
    Buyer
    RoadOne IntermodaLogistics, Nonantum Capital
    Target
    Wilmac Enterprises
    Industry
    Logistics & Distribution
    Location
    Texas, United States
    Type
    Addon

    RoadOne IntermodaLogistics has acquired Wilmac Enterprises, a Fort Worth–based intermodal and drayage provider with terminals in Fort Worth, Memphis and Newark. The deal expands RoadOne’s national network and terminal/warehousing capabilities; Wilmac’s leadership will remain involved with Wilson Correa staying on as strategic adviser and the general manager handling day-to-day operations.

  • RoadOne IntermodaLogistics Acquires R&A Trucking Company (R&A LogisticSolutions)
    August 22, 2022
    Buyer
    RoadOne IntermodaLogistics, Nonantum Capital
    Target
    R&A Trucking Company
    Industry
    Logistics & Distribution
    Location
    California, United States
    Type
    Addon

    RoadOne IntermodaLogistics has acquired Oakland-based R&A Trucking Company, which will operate as R&A LogisticSolutions, a RoadOne company. The acquisition (backed by sponsor Nonantum Capital) expands RoadOne's West Coast footprint and coastal transload/warehousing capabilities, adding drayage, trucking, brokerage and a 370,000 sq ft FTZ-enabled warehouse in Oakland.

  • RoadOne IntermodaLogistics Acquires EHS Trucking Enterprises
    December 22, 2021
    Buyer
    RoadOne IntermodaLogistics, Nonantum Capital Partners
    Target
    EHS Trucking Enterprises
    Industry
    Logistics & Distribution
    Location
    Michigan, United States
    Type
    Addon

    RoadOne IntermodaLogistics, a portfolio company of Nonantum Capital Partners, has acquired EHS Trucking Enterprises, a regional trucking provider based in Brownstown Township, Michigan. Kreshmore Group advised EHS on the transaction, which closed December 22, 2021; financial terms were not disclosed.

  • Nonantum Capital Partners Acquires Helix Traffic Solutions
    August 17, 2021
    Buyer
    Nonantum Capital Partners
    Target
    Helix Traffic Solutions
    Industry
    Industrial Services
    Location
    Tennessee, United States
    Type
    Buyout

    Nonantum Capital Partners, a Boston-based middle-market private equity firm, has acquired Helix Traffic Solutions, a leading U.S. provider of traffic management services, equipment rental, and sign installation. The investment will support Helix’s national expansion strategy and continued roll-up of founder-led traffic service businesses across the United States.

  • Nonantum Capital Partners Acquires Ross-Simons
    December 10, 2020
    Buyer
    Nonantum Capital Partners
    Target
    Ross-Simons
    Seller
    Ross-Simons (founders/owners, including Darrell Ross and existing leadership)
    Industry
    E-Commerce
    Location
    Rhode Island, United States
    Type
    Buyout

    Boston-based private equity firm Nonantum Capital Partners has acquired Rhode Island-based direct-to-consumer jeweler Ross-Simons. The deal will keep founder Darrell Ross and CEO Jim Speltz as owner-partners while Nonantum supports the company's next stage of growth and omnichannel expansion.

Related Acquisition Pages

Logistics & Distribution Buyers & Acquisitions 4 tracked deals by Nonantum Capital Partners. Environmental Services Buyers & Acquisitions 2 tracked deals by Nonantum Capital Partners. Infrastructure Buyers & Acquisitions 2 tracked deals by Nonantum Capital Partners. Transportation Buyers & Acquisitions 2 tracked deals by Nonantum Capital Partners. Acquisitions in Florida 2 tracked deals by Nonantum Capital Partners. Acquisitions in Indiana 2 tracked deals by Nonantum Capital Partners. Acquisitions in Massachusetts 2 tracked deals by Nonantum Capital Partners. Acquisitions in Texas 2 tracked deals by Nonantum Capital Partners.

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