GMB Mezzanine

What GMB Mezzanine does

GMB Mezzanine Capital, L.P. (operating as GMB Capital Partners) is a Minneapolis-based private mezzanine investment manager founded in 2005. The firm provides mezzanine debt and equity financing to privately owned U.S. middle-market companies with enterprise values between $20 million and $200 million, writing standalone checks of up to $30 million and leading larger transactions by syndicating co-investors. It targets six sectors — manufacturing, distribution, technology, healthcare, consumer, and business services — with recent 2026 deployments spanning PVC conduit manufacturing for data center and midstream energy infrastructure, uninterruptible power supply systems, and medical imaging equipment.

GMB operates under a Small Business Administration (SBA) SBIC license, which provides access to SBA-guaranteed debentures and was recognized twice as SBIC of the Year (2016 and 2025). The firm is staffed by 1–10 employees led by co-founder and managing partner Michael D. McHugh, managing principal and founder Carleton Olmanson, CFO Thoman Kreimer, and managing director Judd Stevens. GMB's revenue model is transaction-based, generating returns through interest income, equity appreciation, and co-investment economics on its portfolio, with deal terms customized on a transaction-by-transaction basis.

Distribution is relationship-driven and direct: GMB sources deals through a nationwide network of intermediaries, owners, and co-investors rather than through broad marketing channels. The firm maintains a corporate website, a LinkedIn presence, and periodic portfolio news updates as its principal external communications. Revenue, AUM, fund size, and ownership structure are not publicly disclosed, constraining external visibility into financial scale.

Name

GMB Mezzanine

Legal name

GMB Capital Partners

Website

https://gmbmezz.com

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

1–10 employees

Short description

GMB Mezzanine is a Minneapolis-based private mezzanine investment manager providing debt and equity financing to privately owned U.S. middle-market companies with enterprise values of $20M–$200M across manufacturing, distribution, technology, healthcare, consumer, and business services.

Ownership category

akta.pro rank

Product category

Mezzanine Financing

NAICS

All Other Financial Investment Activities (52399), Other Investment Pools and Funds (5259)

SIC

Miscellaneous Business Credit Institution (6159)

akta.pro primary industry

Private Credit / Direct Lending (FSAAAHAG)

Keywords

• Mezzanine financing
• Private debt investment
• Middle market lending
• SBIC investments
• Growth capital financing

Headquarters

HQ city

Minneapolis

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Revenue model

1. Mezzanine Financing Returns: GMB generates returns through providing mezzanine debt and equity financing to privately owned middle-market companies. The firm invests capital seeking returns through interest income, equity appreciation, and co-investment structures.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

GMB Capital Partners is a private investment firm that provides mezzanine financing (subordinated debt paired with equity-linked instruments) to privately owned middle-market U.S. companies with enterprise values between $20 million and $200 million. Standalone investment sizes range up to $30 million, and the firm can lead much larger transactions by syndicating co-investors. Targeted sectors include manufacturing, distribution, technology, healthcare, consumer, and business services.

Product overview

GMB Capital Partners operates as a middle-market financing firm offering a unified investment platform. The core offering is mezzanine financing for privately owned middle-market companies with enterprise values between $20 million and $200 million, with investment sizes up to $30 million. The platform is enhanced by co-investment solutions that allow GMB to facilitate larger transactions by bringing in co-investors. The firm targets multiple industries including manufacturing, distribution, technology, healthcare, consumer, and business services.

Differentiator

Problem solved

Functional benefit

Products and services

• Mezzanine Financing

Quantifiable outcome

• Selected as SBA Small Business Investment Company of the Year for 2016 and 2025

Named customers3 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Blue Torch Capital: Blue Torch Capital is a private credit firm providing senior secured, unitranche, and mezzanine financing to U.S. middle-market companies, comparable to GMB in middle-market direct lending and structured capital solutions.
• Trinity Capital: Trinity Capital (TRIN) is a specialty lending platform providing debt and equipment financing to growth-stage middle-market companies across multiple verticals, comparable to GMB in targeting structured capital solutions for sponsor-backed and privately owned mid-market borrowers.
• WhiteHorse Finance: WhiteHorse Finance (WHF) is a non-traded BDC providing senior secured and second-lien loans to lower middle-market companies, overlapping with GMB's borrower profile and middle-market mezzanine/debt origination model.
• PennantPark Floating Rate Capital: PennantPark Floating Rate Capital (PFLT) is a BDC focused on first-lien, second-lien, and mezzanine debt to middle-market private equity-sponsored companies, comparable to GMB in middle-market credit underwriting and structured capital deployment.
• Runway Growth Finance: Runway Growth Finance (RWAY) is a specialty finance company providing senior and subordinated loans to lower middle-market companies, directly comparable to GMB in ticket size, borrower profile, and mezzanine/sub-debt orientation.
• Saratoga Investment Corp: Saratoga Investment Corp (SAR) is a publicly traded BDC and SBIC-licensed specialty finance company that provides mezzanine debt and leveraged loans to U.S. middle-market companies — closely mirroring GMB's strategy of SBIC-backed mezzanine financing in the lower middle market.

Broad incumbents

• Siguler Guff: Siguler Guff is a multi-strategy alternatives manager with a private credit and direct lending business targeting middle-market borrowers, offering overlapping capabilities with GMB but at materially greater scale and broader strategy.
• New Mountain Finance: New Mountain Finance Corporation (NMFC) is a BDC managed by New Mountain Capital providing senior, second-lien, and mezzanine financing to defensive-growth middle-market companies, comparable to GMB in middle-market mezzanine focus but at larger AUM scale.
• Main Street Capital: Main Street Capital (MAIN) is a large SBIC-licensed BDC providing debt and equity capital to lower middle-market companies, comparable to GMB in SBIC structure and lower middle-market focus but at substantially greater scale.

Emerging players

• Clairvest Group: Clairvest Group is a Canadian private equity and mezzanine investor focused on lower middle-market companies with operations in North America, providing comparable mezzanine capital solutions to a similar borrower profile though primarily Canada-anchored.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/gmb-mezzanine-capital

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GMB Mezzanine