Company lists · Data refreshed September 2026

Top 25 Middle market private equity companies based in Washington, United States

RevenueBase identified 54 middle market private equity companies headquartered in Washington, United States as of September 2026 and tracks 3,173 professional contacts across them, including 1,707 with verified work emails. New York is the largest hub.

This list covers middle market private equity companies headquartered in Washington, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
54Companies
3,173Contacts tracked
1,707Verified emails
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The 25 largest middle market private equity companies based in Washington, United States

Ranked by team size
Top 25 of 54 middle market private equity companies based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names middle market private equity companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
The Carlyle GroupStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 20261,001-5,0002,515

“Carlyle (NASDAQ: CG) is a global investment firm with deep industry expertise that deploys private capital across three business segments: Global Private Equity, Global Credit…”

Source: company website · checked Sep 5, 2026
2
Dark Alpha Capital LLCPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 2026n/a90

“Dark Alpha Capital is an investment firm focused on acquiring private companies.”

Source: company website · checked Sep 5, 2026
3
Halifax GroupStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5049

“Halifax Group is a private investment firm dedicated to partnering with founders and managers of lower middle-market businesses with total enterprise values generally between $50…”

Source: company website · checked Sep 5, 2026
4Washington, DC, United StatesHQ checked Sep 5, 202611-5042

“Arlington Capital Partners is a Washington, D.C-area private investment firm specializing in government regulated industries.”

Source: company website · checked Sep 5, 2026
5
Updata PartnersPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5033

“Updata Partners is a leading technology-focused growth equity firm in Washington D.C.”

Source: company website · checked Sep 5, 2026
6
HCI Equity PartnersPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5031

“HCI Equity Partners is now Oridian Capital Partners.”

Source: company website · checked Sep 5, 2026
7Washington, DC, United StatesHQ checked Sep 5, 202611-5028

“The Small Business Investor Alliance is the association of senior investment professionals focused on the lower middle market whose members represent the entire private capital…”

Source: company website · checked Sep 5, 2026
8
Capitol Meridian PartnersPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 20261-1021

“CAPITOL MERIDIAN PARTNERS (“CMP”) is a private investment firm founded in 2021 by seasoned investors Adam Palmer and Brooke Coburn.”

Source: company website · checked Sep 5, 2026
9
Questa CapitalPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 20261-1017

“Questa Capital is a venture growth equity firm focused on later-stage investing in the healthcare services, healthcare technology, and medical device sectors.”

Source: company website · checked Sep 5, 2026
10Washington, DC, United StatesHQ checked Sep 5, 202611-5017

“Juggernaut Capital Partners is a lower middle market private equity firm specializing in buyout and growth investments across the consumer and healthcare sectors.”

Source: company website · checked Sep 5, 2026
11
DHS Ventures & HoldingsIndirect evidence
Washington, United StatesHQ checked Sep 5, 2026201-50017

“We purposefully engage only in friendly transactions and work with talented management teams to achieve transformative results.”

Source: company website · checked Sep 5, 2026
12Washington, DC, United StatesHQ checked Sep 5, 202611-5016

“Godspeed Capital is a lower middle-market Defense & Government services, solutions, and technology focused private equity firm investing alongside forward-thinking management…”

Source: company website · checked Sep 5, 2026
13
Temerity Capital PartnersPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 20261-1015

“Temerity Capital Partners is a private investment company managed on behalf of its founder, his family interests, and eligible employees.”

Source: company website · checked Sep 5, 2026
14Washington, DC, United StatesHQ checked Sep 5, 202611-5013

“A specialized investment group dedicated to providing high-yield returns through custom-tailored capital solutions.”

Source: company website · checked Sep 5, 2026
15Washington, DC, United StatesHQ checked Sep 5, 202611-5013

“SpringHarbor is a private investment firm based in Washington, DC founded by former Comptroller of the Currency, Eugene Ludwig.”

Source: company website · checked Sep 5, 2026
16
Astra Capital ManagementIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5012

“Astra specializes in growth buyouts in the Communications and Technology Services industries.”

Source: company website · checked Sep 5, 2026
17
Woodson EquityIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5012

“Thesis Minded Investors.”

Source: company website · checked Sep 5, 2026
18
United Western Group UWGStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5011

“United Western Group is a private equity firm based in Washington, D.C.”

Source: company website · checked Sep 5, 2026
19
Multiplier CapitalIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5010

“The Multiplier partners, as a team, have invested over $1.6 billion in capital across more than 165 transactions over the past 20+ years, applying 90 years in combined experience…”

Source: company website · checked Sep 5, 2026
20Washington, DC, United StatesHQ checked Sep 5, 20261-108

“Farragut Capital Partners is a privately-held investment management firm providing private capital (usually senior sub debt and/or preferred equity) to finance outstanding…”

Source: company website · checked Sep 5, 2026
21
TVD Capital PartnersIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 20261-105

“Founded on a commitment to enduring long-term value creation, we actively engage with our companies post-acquisition and partner with top-tier management teams industry leaders…”

Source: company website · checked Sep 5, 2026
22Washington, DC, United StatesHQ checked Sep 5, 20261-104
Source: company website · checked Sep 5, 2026
23Washington, DC, United StatesHQ checked Sep 5, 20261-104

“Northwood Healthcare Partners is a healthcare private investment firm focused on partnering with founders and business owners to build market leading healthcare services companies.”

Source: company website · checked Sep 5, 2026
24
Pencek AdvisorsStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-503

“Pencek Advisors partners with middle market private equity firms, portfolio companies, and founder-owned businesses to execute on strategic initiatives and create sustained value.”

Source: company website · checked Sep 5, 2026
25
Serendipity Equity GroupPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 20261-102

“Serendipity Equity Group (SEG) operates at the intersection of capital and execution.”

Source: company website · checked Sep 5, 2026

Showing 25 of 54 middle market private equity companies based in Washington, United States

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Middle market private equity companies based in Washington, United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 911 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
32
11-50
19
201-500
1
1,001-5,000
2

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 54 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among middle market private equity companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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
Companies headquartered in Washington, United States whose own description of what they do matches “middle market private equity companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among middle market private equity companies, and records with no verified work email. Companies headquartered outside Washington are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,707 across the full list. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Middle market private equity companies by metro in the United States

Frequently asked

How many middle market private equity companies are there based in Washington, United States?

RevenueBase identified 54 middle market private equity companies headquartered in Washington, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

The Carlyle Group, headquartered in Washington, tops this list with the largest team on record.

Which city has the most middle market private equity companies?

New York leads with 911 headquartered companies, followed by Chicago (317) and Dallas (276).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,707 verified decision-maker contacts tracked across these 54 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 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.