Company lists · Data refreshed September 2026

Top 25 Upper middle market private equity firms based in Washington, United States

Name: Upper middle market private equity firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 61 companies tracked

RevenueBase identified 61 upper middle market private equity firms headquartered in Washington, United States as of September 2026 and tracks 3,532 professional contacts across them, including 1,883 with verified work emails. New York is the largest hub.

This list covers upper middle market private equity firms 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

61Companies

3,532Contacts tracked

1,883Verified emails

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The 25 largest upper middle market private equity firms based in Washington, United States

Ranked by team size

Top 25 of 61 upper middle market private equity firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to upper middle market private equity firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	The Carlyle Group	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,515 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 21, 2026
2	JMI Equity	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	152 contacts →
	Partial evidence “Founded in 1992, JMI Equity has focused on investing in exceptional software and AI-driven companies from scaling stages through later growth.” Source: RevenueBase Database · checked Sep 21, 2026
3	Acon Investments, L.L.C	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	91 contacts →
	Strong evidence “ACON Investments is a private equity investment firm led by a cohesive team that has been investing together for over 25 years.” Source: RevenueBase Database · checked Sep 21, 2026
4	Dark Alpha Capital LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	n/a	90 contacts →
	Partial evidence “Dark Alpha Capital is an investment firm focused on acquiring private companies.” Source: RevenueBase Database · checked Sep 21, 2026
5	Anzu Partners	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	63 contacts →
	Strong evidence “Anzu Partners is a venture capital and private equity firm that invests in breakthrough industrial technologies.” Source: RevenueBase Database · checked Sep 21, 2026
6	Halifax Group	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	49 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 21, 2026
7	Arlington Capital Partners	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	42 contacts →
	Partial evidence “Arlington Capital Partners is a Washington, D.C-area private investment firm specializing in government regulated industries.” Source: RevenueBase Database · checked Sep 21, 2026
8	Updata Partners	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	33 contacts →
	Partial evidence “Updata Partners is a leading technology-focused growth equity firm in Washington D.C.” Source: RevenueBase Database · checked Sep 21, 2026
9	HCI Equity Partners	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	31 contacts →
	Partial evidence “HCI Equity Partners is now Oridian Capital Partners.” Source: RevenueBase Database · checked Sep 21, 2026
10	Small Business Investor Alliance	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	28 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 21, 2026
11	ABS Capital	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “ABS Capital provides growth equity capital to B2B software and tech-enabled services businesses with strong technology and data underpinnings looking to scale with the right…” Source: RevenueBase Database · checked Sep 21, 2026
12	Capitol Meridian Partners	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1-10	21 contacts →
	Partial evidence “CAPITOL MERIDIAN PARTNERS (“CMP”) is a private investment firm founded in 2021 by seasoned investors Adam Palmer and Brooke Coburn.” Source: RevenueBase Database · checked Sep 21, 2026
13	Questa Capital	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1-10	17 contacts →
	Partial evidence “Questa Capital is a venture growth equity firm focused on later-stage investing in the healthcare services, healthcare technology, and medical device sectors.” Source: RevenueBase Database · checked Sep 21, 2026
14	Juggernaut Capital Partners	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	17 contacts →
	Strong evidence “Juggernaut Capital Partners is a lower middle market private equity firm specializing in buyout and growth investments across the consumer and healthcare sectors.” Source: RevenueBase Database · checked Sep 21, 2026
15	DHS Ventures & Holdings	Indirect evidence	Washington, United StatesHQ checked Sep 21, 2026	201-500	17 contacts →
	Indirect evidence “We purposefully engage only in friendly transactions and work with talented management teams to achieve transformative results.” Source: RevenueBase Database · checked Sep 21, 2026
16	Godspeed Capital Management	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	16 contacts →
	Strong evidence “Godspeed Capital is a lower middle-market Defense & Government services, solutions, and technology focused private equity firm investing alongside forward-thinking management…” Source: RevenueBase Database · checked Sep 21, 2026
17	Temerity Capital Partners	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1-10	15 contacts →
	Partial evidence “Temerity Capital Partners is a private investment company managed on behalf of its founder, his family interests, and eligible employees.” Source: RevenueBase Database · checked Sep 21, 2026
18	Avenue Growth Partners	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1-10	14 contacts →
	Partial evidence “Avenue is an early growth equity firm.” Source: RevenueBase Database · checked Sep 21, 2026
19	Swan & Legend Venture Partners	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “SWaN & Legend Venture Partners focuses primarily on companies that are building engaging brands, central to consumers’ lives, across a number of industries, as well as the B2B…” Source: RevenueBase Database · checked Sep 21, 2026
20	Spaulding & Slye Investments	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “A specialized investment group dedicated to providing high-yield returns through custom-tailored capital solutions.” Source: RevenueBase Database · checked Sep 21, 2026
21	Springharbor Financial Group LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	13 contacts →
	Partial evidence “SpringHarbor is a private investment firm based in Washington, DC founded by former Comptroller of the Currency, Eugene Ludwig.” Source: RevenueBase Database · checked Sep 21, 2026
22	Astra Capital Management	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Astra specializes in growth buyouts in the Communications and Technology Services industries.” Source: RevenueBase Database · checked Sep 21, 2026
23	Woodson Equity	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Thesis Minded Investors.” Source: RevenueBase Database · checked Sep 21, 2026
24	United Western Group UWG	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	11 contacts →
	Strong evidence “United Western Group is a private equity firm based in Washington, D.C.” Source: RevenueBase Database · checked Sep 21, 2026
25	Multiplier Capital	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: upper middle market private equity firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names upper middle market private equity firms.
Partial evidence: Its own public description names part of upper middle market private equity firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name upper middle market private equity firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 61 upper middle market private equity firms based in Washington, United States

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Upper middle market private equity firms based in Washington, United States at a glance

As of Sep 21, 2026

53.3%Verified-email coverage

57.9Average contacts per company

1-10Median size (employees)

1570.5%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 61 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 upper middle market private equity firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “upper middle market private equity firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names upper middle market private equity firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among upper middle market private equity firms, 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 its RevenueBase Smart Search 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, 1,883 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 21, 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.

Upper middle market private equity firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names upper middle market private equity firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 61 upper middle market private equity firms 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 upper middle market private equity firms?

New York leads with 958 headquartered companies, followed by Chicago (333) and Dallas (294).

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 1,883 verified decision-maker contacts tracked across these 61 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 21, 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 Smart Search, 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.