Private Equity Firm Financial Services

Main Street Capital

Houston, Texas, United States

Main Street Capital (NYSE: MAIN) is a lower middle market focused provider of long-term and flexible capital solutions, offering first-lien/unitranche debt and select equity investments to support growth, buyouts, acquisitions, refinancings, and recapitalizations. Headquartered in Houston, Texas.

Focus Areas
Business Development Company (BDC), Lower middle market debt and select equity investing, Principal investment / credit & equity investing

Tracked deals

89

89 tracked deals across 2014-2026.

Recent pace

13

13 tracked deals announced in the last 12 months.

Deal mix

Recapitalization

44 recapitalization · 20 addon · 12 buyout

Main Street Capital Acquisition Volume by Year

Last 8 years

Acquisition volume by year Annual acquisition counts for the last 8 years for Main Street Capital. 2 2019 6 2020 22 2021 17 2022 8 2023 12 2024 10 2025 ~13 est. 9 2026
Actual Full-year estimate

Supporting Data

Recent Transactions

Showing the 12 most recent of 89 tracked deals for Main Street Capital.

  • Main Street Capital Acquires Minority Stake in Shift Transit via $40M Recapitalization
    April 28, 2026
    Buyer
    Main Street Capital Corporation
    Target
    Shift Transit, LLC, Shift Transit Inc.
    Seller
    Shift Transit's founders and existing owners
    Industry
    Transportation
    Location
    Illinois, United States
    Type
    Recapitalization

    Main Street Capital Corporation completed a $40.0 million minority recapitalization of Shift Transit, LLC and Shift Transit Inc. The financing combines first lien, senior secured term debt and a direct minority equity investment alongside Shift Transit's founders and existing owners.

  • Main Street Capital and MSC Income Fund Make Follow-On Investment in UBM ParentCo (United Business Mail)
    April 21, 2026
    Buyer
    Main Street Capital Corporation, MSC Income Fund, Inc.
    Target
    UBM ParentCo, LLC (United Business Mail)
    Industry
    IT Services
    Location
    Illinois, United States
    Type
    Growth capital

    Main Street Capital Corporation and its co-investor MSC Income Fund, Inc. completed a follow-on investment totaling $15.6 million in UBM ParentCo, LLC (doing business as United Business Mail, or UBM). The additional first lien, senior secured term debt investment is intended to support UBM’s strategic acquisition of a national, asset-light palletized mail consolidation and optimization services provider, along with freight brokerage and warehousing/distribution capabilities.

  • Main Street Capital and MSC Income Fund Provide Follow-On Financing for Trantech’s Acquisition of Transformer Maintenance and Service (TMS)
    April 1, 2026
    Buyer
    Main Street Capital Corporation, MSC Income Fund, Inc., Trantech Radiator Topco, LLC
    Target
    Transformer Maintenance and Service, Inc. (TMS)
    Seller
    Owners of TMS (Transformer Maintenance and Service, Inc.)
    Industry
    Industrial Services
    Location
    South Carolina, United States
    Type
    Addon

    Main Street Capital Corporation and co-investor MSC Income Fund completed a $26.0 million follow-on investment in their portfolio company, Trantech Radiator Topco, LLC, to support Trantech’s strategic acquisition of Transformer Maintenance and Service, Inc. (TMS). The financing includes $24.7 million of first-lien senior secured term debt and $1.4 million of direct equity, with TMS owners receiving a portion of the acquisition purchase price as equity in Trantech.

  • Main Street Capital Completes $61.5 Million Minority Recapitalization of Structural Steel Fabricator
    March 10, 2026
    Buyer
    Main Street Capital Corporation
    Target
    Specialized structural steel fabricator (minority recapitalization target)
    Industry
    Industrial Services
    Location
    Texas, United States
    Type
    Recapitalization

    Main Street Capital Corporation completed a $61.5 million investment to facilitate the minority recapitalization of a specialized structural steel fabricator located in the greater Houston metropolitan area. The financing includes first lien and senior secured term debt, a direct minority equity investment, and a revolving line of credit to support growth initiatives and working capital needs.

  • Main Street Capital Completes $28.0M Minority Recapitalization of Architectural & Engineering Services Provider
    March 4, 2026
    Buyer
    Main Street Capital Corporation
    Target
    Architectural and engineering services organization (leading provider of end-to-end architectural, engineering, land planning and entitlement services)
    Industry
    Professional Services
    Location
    United States
    Type
    Recapitalization

    Main Street Capital Corporation completed a $28.0 million portfolio investment to facilitate the minority recapitalization of a provider of end-to-end architectural, engineering, land planning, and entitlement services. Main Street partnered with the company’s existing owner-operator and funded the transaction with first lien, senior secured term debt, and a direct minority equity investment.

  • Main Street Capital and MSC Income Fund Invest $25.6M in DMS Holdco for Acquisition of Johnson & Quin
    February 11, 2026
    Buyer
    Main Street Capital Corporation, MSC Income Fund, Inc., DMS Holdco LLC
    Target
    Johnson & Quin, Inc., DMS Holdco LLC
    Seller
    owners of Johnson & Quin, Inc.
    Industry
    Marketing & Advertising
    Location
    Illinois, United States
    Type
    Addon

    Main Street Capital Corporation (NYSE: MAIN) and its co-investor MSC Income Fund, Inc. (NYSE: MSIF) completed a follow-on investment totaling $25.6 million in their existing portfolio company, DMS Holdco LLC. The new financing supports DMS’s strategic acquisition of Johnson & Quin, Inc. (J&Q), an omni-channel/direct marketing services business located in Chicago, Illinois.

  • Main Street Capital Partners in Leveraged Buyout of Healthcare Data Services Provider
    February 5, 2026
    Buyer
    Main Street Capital Corporation, Iron Creek Partners, LLC
    Target
    (Leading) Healthcare data services provider (name not disclosed in provided sources)
    Seller
    The Company's existing owner (name not disclosed in provided sources)
    Industry
    Healthcare Services
    Location
    United States
    Type
    Buyout

    Main Street Capital Corporation recently completed a $15.3 million portfolio investment to help facilitate the leveraged buyout of a leading healthcare data services provider. The deal involved Main Street partnering with Iron Creek Partners, LLC (majority equity investor) and the company’s existing owner, with proceeds used via first-lien/senior secured debt and a direct minority equity investment.

  • Main Street Capital Recapitalizes Two Northeastern Commercial Concrete Contractors
    January 7, 2026
    Buyer
    Main Street Capital Corporation
    Target
    Two Northeastern U.S. commercial concrete subcontractors (unnamed)
    Seller
    Existing owners and management
    Industry
    Construction
    Location
    United States
    Type
    Recapitalization

    Main Street Capital Corporation completed a $35.0 million portfolio investment to facilitate minority recapitalizations of two commercial concrete contracting companies under a single holding company. The financing, which includes first-lien senior secured term debt and a direct minority equity investment, partners with the companies' existing owners and management to provide liquidity and support ongoing operations serving large commercial projects such as warehouses, distribution centers, data centers and cold storage facilities.

  • Main Street Provides $50.8M to UBM to Facilitate Merger with Mystic Logistics
    January 6, 2026
    Buyer
    Main Street Capital Corporation, UBM ParentCo, LLC (United Business Mail)
    Target
    Mystic Logistics Holdings, LLC
    Seller
    Main Street Capital Corporation
    Industry
    Logistics & Distribution
    Location
    United States
    Type
    Growth capital

    Main Street Capital provided $50.8 million of financing (first‑lien senior secured term debt and minority equity) to UBM ParentCo, LLC (United Business Mail) to facilitate UBM's merger with Mystic Logistics Holdings, LLC. As part of the transaction Main Street exited its debt and equity investments in Mystic and became a lender and minority equity owner in UBM.

  • The Nearshore Company Acquires Carmi Companies; Main Street Capital Invests $27.2M
    November 19, 2025
    Buyer
    Main Street Capital Corporation, The Nearshore Company
    Target
    Carmi Companies
    Industry
    Logistics & Distribution
    Location
    Texas, United States
    Type
    Growth capital

    Main Street Capital Corporation invested $27.2 million (first-lien senior secured term debt plus a minority equity stake) in The Nearshore Company to support TNC’s acquisition of the Carmi Companies. The combination brings together TNC’s Mexico-based turnkey manufacturing and warehousing services with Carmi’s transportation, logistics and customs clearance capabilities to create an end-to-end cross-border operations platform.

  • Main Street Capital Invests $47M in Recapitalization of Swim School Franchisee
    November 18, 2025
    Buyer
    Main Street Capital Corporation
    Target
    Unnamed swim school franchisee (operates 40+ locations across ten U.S. states)
    Industry
    Education
    Location
    United States
    Type
    Recapitalization

    Main Street Capital Corporation completed a $47.0 million minority recapitalization of a leading swim school franchisee that operates more than 40 locations across ten U.S. states. The investment included a combination of first-lien senior secured term debt and a direct minority equity stake and was completed in partnership with the company's existing owners and management.

  • Main Street Capital Completes $81M Recapitalization of Southeastern Musculoskeletal Care Provider
    October 15, 2025
    Buyer
    Main Street Capital Corporation
    Target
    Unnamed musculoskeletal care management services organization (Southeastern U.S.)
    Seller
    Company founders
    Industry
    Healthcare Services
    Location
    United States
    Type
    Recapitalization

    Main Street Capital Corporation completed an $81.0 million minority recapitalization of a leading musculoskeletal care management services organization based in the Southeastern United States. The financing, composed of first-lien senior secured term debt and a direct minority equity investment, provides founder liquidity and growth capital to support the company’s multi-site clinical operations across several states.

Related Acquisition Pages

Manufacturing Buyers & Acquisitions 21 tracked deals by Main Street Capital. Industrial Services Buyers & Acquisitions 9 tracked deals by Main Street Capital. Construction Buyers & Acquisitions 6 tracked deals by Main Street Capital. Education Buyers & Acquisitions 4 tracked deals by Main Street Capital. Acquisitions in Texas 9 tracked deals by Main Street Capital. Acquisitions in California 7 tracked deals by Main Street Capital. Acquisitions in Illinois 6 tracked deals by Main Street Capital. Acquisitions in Michigan 5 tracked deals by Main Street Capital.

Selling a company? Get in front of buyers like Main Street Capital

Turn tracked acquisition activity into an outreach-ready buyer list.

Find buyers like these →