Company lists · Data refreshed September 2026

Top 25 Private equity sponsors with mezzanine funding companies based in the United States

RevenueBase identified 2,246 company matches for private equity sponsors with mezzanine funding companies associated with the United States as of September 2026 and tracks 35,532 professional contacts across them, including 19,700 with verified work emails. New York is the largest hub.

This list covers company matches for private equity sponsors with mezzanine funding companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built
2,246Companies
35,532Contacts tracked
19,700Verified emails
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The 25 largest private equity sponsors with mezzanine funding companies based in the United States

Ranked by team size
Top 25 of 2,246 company matches for private equity sponsors with mezzanine funding companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMiami, FL, United StatesHQ recorded Sep 29, 2026501-1,0001,301 contacts →

Exact match

“H.I.G.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchNew York, NY, United StatesHQ recorded Sep 29, 20261,001-5,0001,126 contacts →

Exact match

“Golub Capital is a market-leading, award-winning direct lender and experienced private credit manager.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchBoston, MA, United StatesHQ recorded Sep 29, 2026501-1,0001,025 contacts →

Exact match

“Advent is a leading global private equity investor committed to working in partnership with management teams, entrepreneurs, and founders to help transform businesses.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchBoston, MA, United StatesHQ recorded Sep 29, 2026201-500881 contacts →

Exact match

“TA is a leading global private equity firm focused on scaling growth in profitable companies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchBoston, MA, United StatesHQ recorded Sep 29, 202651-200513 contacts →

Exact match

“PSG is a growth equity firm that partners with software and technology-enabled services companies to help them navigate transformational growth, capitalize on strategic…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchBoston, MA, United StatesHQ recorded Sep 29, 202651-200465 contacts →

Exact match

“Summit Partners is a global alternative investment firm with capital dedicated to growth equity, fixed income, and public equity opportunities.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchNew York, NY, United StatesHQ recorded Sep 29, 2026201-500447 contacts →

Exact match

“The Riverside Company is a global investment firm focused on being one of the leading private capital options for business owners and employees at the smaller end of the middle…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchBethesda, MD, United StatesHQ recorded Sep 29, 2026201-500339 contacts →

Exact match

“MidCap Financial is a middle-market focused, specialty finance firm that provides senior debt solutions to companies across all industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchNew York, NY, United StatesHQ recorded Sep 29, 2026n/a337 contacts →

Exact match

“W Capital Partners is a private equity firm that provides secondary liquidity to shareholders in private businesses and growth capital for those companies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchChicago, IL, United StatesHQ recorded Sep 29, 202651-200327 contacts →

Exact match

“Shore Capital, a Chicago-based private equity firm with an office in Nashville, is an investor in lower-middle market companies in the Healthcare, Food and Beverage, Business…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchPalo Alto, CA, United StatesHQ recorded Sep 29, 202651-200272 contacts →

Exact match

“Since 2007, we’ve specialized in transforming good businesses into great companies through our differentiated approach to partnership investing.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchNew York, NY, United StatesHQ recorded Sep 29, 2026201-500260 contacts →

Exact match

“Churchill, an investment-specialist affiliate of Nuveen (the asset manager of TIAA), provides customized financing solutions to U.S.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchBoston, MA, United StatesHQ recorded Sep 29, 2026201-500255 contacts →

Exact match

“Berkshire Partners is a 100% employee-owned, multi-sector specialist investor in private and public equity, with a focus on North American-based, middle-market companies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchChicago, IL, United StatesHQ recorded Sep 29, 202651-200237 contacts →

Exact match

“Founded in 1980, GTCR is a leading private equity firm that invests behind The Leaders Strategy™ – finding and partnering with management leaders in core domains to identify…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchBoston, MA, United StatesHQ recorded Sep 29, 202651-200236 contacts →

Exact match

“Based in Boston and New York City, Charlesbank is a leading middle-market private investment firm with $21.5 billion in assets under management as of 3/31/2026.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchMenlo Park, CA, United StatesHQ recorded Sep 29, 202651-200236 contacts →

Exact match

“Accel-KKR is a technology-focused investment firm with $23 billion in capital commitments.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchNew York, NY, United StatesHQ recorded Sep 29, 202651-200220 contacts →

Exact match

“Founded in 1994, American Securities is a leading U.S.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchBoston, MA, United StatesHQ recorded Sep 29, 2026201-500211 contacts →

Exact match

“Headquartered in Boston, with offices in San Francisco, New York, London and Hong Kong, Audax Private Equity is a leading private equity platform focused on investing across the…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchNew York, NY, United StatesHQ recorded Sep 29, 202651-200207 contacts →

Exact match

“AEA Investors is a leading global alternative investment firm that has partnered with exceptional middle-market businesses for over 55 years.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchNew York, CA, United StatesHQ recorded Sep 29, 2026n/a199 contacts →

Exact match

“FdG Associates is a leading private equity investment firm with a strong track record of partnering with management in recapitalizations and management buyouts of middle-market…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Sep 29, 202651-200172 contacts →

Exact match

“Bringing large market expertise to smaller companies, Star Mountain’s philosophies include a data-driven and systematic approach to investing.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchPhiladelphia, PA, United StatesHQ recorded Sep 29, 202651-200168 contacts →

Exact match

“LLR Partners is a lower middle market private equity firm focused on investing in software and tech-enabled companies within the knowledge economy.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchProvidence, RI, United StatesHQ recorded Sep 29, 202651-200160 contacts →

Exact match

“Providence Equity Partners L.L.C.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchNew York, NY, United StatesHQ recorded Sep 29, 202651-200160 contacts →

Exact match

“Based in New York City, Stripes is a leading growth equity firm that invests in branded consumer and enterprise companies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchLexington, KY, United StatesHQ recorded Sep 29, 202651-200158 contacts →

Exact match

“We are a private equity firm that invests in North American and European B2B middle-market industrial and specialty distribution businesses.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 2,246 private equity sponsors with mezzanine funding companies based in the United States

See the full list, filter by size, metro and specialty, and access 19,700 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Private equity sponsors with mezzanine funding companies based in the United States at a glance

As of Sep 29, 2026
55.4%Verified-email coverage
15.8Average contacts per company
1-10Median size (employees)
15.3%Largest-city concentration · New York
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
1,404
11-50
677
51-200
121
201-500
23
501-1,000
12
1,001-5,000
8

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,246 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “private equity sponsors with mezzanine funding companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 19,700 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “private equity sponsors with mezzanine funding companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many private equity sponsors with mezzanine funding companies are there based in the United States?

RevenueBase identified 2,246 company matches for private equity sponsors with mezzanine funding companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

H.I.G. Capital tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most private equity sponsors with mezzanine funding companies?

New York leads with 343 company records, followed by Chicago (139) and Los Angeles (98).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 19,700 professional contacts with verified work emails tracked across these 2,246 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.