Company lists · Data refreshed September 2026

Top 25 Mid-market private equity companies based in San Francisco, United States

Name: Mid-market private equity companies based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 159 companies tracked

RevenueBase identified 159 mid-market private equity companies headquartered in San Francisco, United States as of September 2026 and tracks 3,551 professional contacts across them, including 1,940 with verified work emails. Across the United States, New York is the largest hub for this category (921 companies); San Francisco has 159.

This list covers mid-market private equity companies headquartered in San Francisco, 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 28, 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 28, 2026 86% judged on-target in blind review

159Companies

3,551Contacts tracked

1,940Verified emails

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The 25 largest mid-market private equity companies based in San Francisco, United States

Ranked by team size

Top 25 of 159 mid-market private equity companies based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to mid-market private equity companies: 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	Sixth Street	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	501-1,000	802 contacts →
	Indirect evidence “Sixth Street is a global investment firm with over $135 billion in assets under management and committed capital.* The firm uses its long-term flexible capital, data-enabled…” Source: RevenueBase Database · checked Sep 28, 2026
2	Alpine Investors	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	278 contacts →
	Strong evidence “Alpine Investors is a people-driven private equity firm that invests in software and services businesses.” Source: RevenueBase Database · checked Sep 28, 2026
3	Hellman & Friedman	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	220 contacts →
	Strong evidence “Founded in 1984, Hellman & Friedman (H&F) is one of the most experienced private equity investment firms operating today.” Source: RevenueBase Database · checked Sep 28, 2026
4	Gryphon Investors	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	211 contacts →
	Strong evidence “Gryphon Investors is a leading middle-market private investment firm focused on building and growing profitable, market-leading companies in the Business Services, Consumer…” Source: RevenueBase Database · checked Sep 28, 2026
5	Contrary	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	136 contacts →
	Indirect evidence “Contrary is a talent and research-driven investment firm.” Source: RevenueBase Database · checked Sep 28, 2026
6	FTV Capital	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	135 contacts →
	Partial evidence “FTV Capital is a growth equity investment firm that has raised over $10.2 billion to invest in high-growth companies offering a range of innovative solutions in financial…” Source: RevenueBase Database · checked Sep 28, 2026
7	Golden Gate Capital	Strong evidence	San Francisco, United StatesHQ checked Sep 28, 2026	51-200	126 contacts →
	Strong evidence “Golden Gate Capital is a San Francisco-based private equity investment firm with approximately $20 billion in cumulative committed capital.” Source: RevenueBase Database · checked Sep 28, 2026
8	Turn River Capital	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	106 contacts →
	Strong evidence “Turn/River Capital is a private equity firm that applies a proprietary growth engineering strategy to investing, partnering with software businesses to accelerate growth and build…” Source: RevenueBase Database · checked Sep 28, 2026
9	JH Partners	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	96 contacts →
	Strong evidence “JH Partners, LLC ("JH Partners" or "JHP") is a San Francisco-based private equity firm focused on building sustainable, long-term equity value in consumer and marketing-driven…” Source: RevenueBase Database · checked Sep 28, 2026
10	Vector Capital Management	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	89 contacts →
	Strong evidence “Vector Capital is a leading, San Francisco-based global private equity and credit investment firm focused on transformative investments in technology and technology-enabled…” Source: RevenueBase Database · checked Sep 28, 2026
11	Dragoneer Investment Group	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	85 contacts →
	Indirect evidence “Dragoneer is a growth-oriented investment firm with over $35 billion in assets under management.” Source: RevenueBase Database · checked Sep 28, 2026
12	Genstar Capital	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	84 contacts →
	Strong evidence “Genstar Capital is a leading middle-market private equity firm, investing in high quality companies for over 30 years.” Source: RevenueBase Database · checked Sep 28, 2026
13	VMG Partners	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	61 contacts →
	Indirect evidence “VMG is a leading investment firm that backs branded consumer product, service, and technology companies.” Source: RevenueBase Database · checked Sep 28, 2026
14	Northgate Capital	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	49 contacts →
	Strong evidence “Northgate Capital, founded in manages $5bn in venture capital and private equity.” Source: RevenueBase Database · checked Sep 28, 2026
15	Meritage Group LP	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	47 contacts →
	Indirect evidence “Meritage Group LP is a fundamentally oriented investment firm backed by evergreen, flexible capital.” Source: RevenueBase Database · checked Sep 28, 2026
16	Banneker Partners	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	44 contacts →
	Indirect evidence “Founded in 2016, Banneker is dedicated to empowering management teams on their journey to build exceptional software companies.” Source: RevenueBase Database · checked Sep 28, 2026
17	Main Post Partners	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	33 contacts →
	Strong evidence “Main Post Partners is a private equity investment firm focused on investing $50 – $250+ million in high-growth companies across the consumer value chain.” Source: RevenueBase Database · checked Sep 28, 2026
18	Calera Capital	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	33 contacts →
	Strong evidence “Founded in 1991, Calera Capital has invested over $5 billion of equity capital in the middle market, predominantly in founder, family, and management-owned businesses across a…” Source: RevenueBase Database · checked Sep 28, 2026
19	Tree Line Capital Partners	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	32 contacts →
	Strong evidence “Tree Line Capital Partners is a private credit asset management firm focused on direct lending to the lower middle-market.” Source: RevenueBase Database · checked Sep 28, 2026
20	True Wind	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	32 contacts →
	Indirect evidence “True Wind is an investment firm that helps technology businesses transform industries.” Source: RevenueBase Database · checked Sep 28, 2026
21	Industrial Growth Partners	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	30 contacts →
	Strong evidence “IGP is a San Francisco-based specialist private investment partnership focused exclusively on acquiring middle-market industrial businesses.” Source: RevenueBase Database · checked Sep 28, 2026
22	BAY Grove	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Bay Grove was formed in late 2007 by Kevin Marchetti and Adam Forste and joined in 2011 by Dave Brandes.” Source: RevenueBase Database · checked Sep 28, 2026
23	Knox Lane	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Knox Lane is a San Francisco-based middle-market investment firm, comprised of investors and operators from blue-chip backgrounds that have a long history of working together…” Source: RevenueBase Database · checked Sep 28, 2026
24	Housatonic Partners	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Strong evidence “Housatonic Partners is a private equity firm investing in high growth, recurring revenue service companies operating in a number of industries including healthcare, software, and…” Source: RevenueBase Database · checked Sep 28, 2026
25	Carrick Capital Partners	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “Carrick Capital Partners is the first stop for entrepreneurs and business owners who are seeking unmatched expertise to help their businesses scale.” Source: RevenueBase Database · checked Sep 28, 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: mid-market private equity companies. 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 mid-market private equity companies.
Partial evidence: Its own public description names part of mid-market private equity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mid-market private equity companies. 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 159 mid-market private equity companies based in San Francisco, United States

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Mid-market private equity companies based in San Francisco, United States at a glance

As of Sep 28, 2026

54.6%Verified-email coverage

22.3Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

100

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 159 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 mid-market private equity companies, 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 San Francisco, United States whose own description of what they do matches “mid-market private equity companies”. 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 mid-market private equity companies), 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 mid-market private equity companies, and records with no verified work email. Companies headquartered outside San Francisco 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, 1,940 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 28, 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.

Mid-market private equity companies 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 mid-market private equity companies, 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 mid-market private equity companies are there based in San Francisco, United States?

RevenueBase identified 159 mid-market private equity companies headquartered in San Francisco, 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?

Sixth Street, headquartered in San Francisco, tops this list with the largest team on record.

Which city in the United States has the most mid-market private equity companies?

New York leads the United States with 921 headquartered companies, followed by Chicago (301) and Dallas (268). San Francisco has 159.

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 1,940 verified decision-maker contacts tracked across these 159 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 28, 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.