Company lists · Data refreshed September 2026
Top 25 Impact-focused private equity firms based in Houston, United States
RevenueBase identified 79 impact-focused private equity firms headquartered in Houston, United States as of September 2026 and tracks 515 professional contacts across them, including 224 with verified work emails. Across the United States, New York is the largest hub for this category (519 companies); Houston has 79.
This list covers impact-focused private equity firms headquartered in Houston, 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.
The 25 largest impact-focused private equity firms based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 120 contacts → | ||||
Strong evidence “Founded in 1982, The Sterling Group, is a private equity investment firm that targets controlling interests in basic manufacturing, industrial services and distribution companies.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 40 contacts → | ||||
Strong evidence “Trek One Capital is a family office backed private investment firm focused on lower and middle market acquisitions and strategic investments.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 39 contacts → | ||||
Indirect evidence “We believe principles are the foundation of prosperity.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 26 contacts → | ||||
Partial evidence “Founded in 2006, Platform Partners LLC is a Houston-based private investment firm that partners with founders and executives of companies with enterprise values typically between…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 17 contacts → | ||||
Strong evidence “Lilium Group LLC (“Lilium”) is a Houston-based private equity fund manager focused on middle market investments in the transportation and industrials sectors.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 16 contacts → | ||||
Indirect evidence “Founded in Genesis Park uses operational expertise, discipline and patience to build value for portfolio companies and investors, regardless of prevailing market conditions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 15 contacts → | ||||
Indirect evidence “We empower companies to unearth their potential, build lasting value and break apart from the crowd.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 13 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 12 contacts → | ||||
Indirect evidence “EnCap is pursuing investment opportunities created by the global transition to a lower-carbon energy system.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 8 contacts → | ||||
Partial evidence “White Deer is an investment firm focusing on the energy industry’s future and future possibilities.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 8 contacts → | ||||
Indirect evidence “Tupper Lake Partners is a Venture Capital and Investment Management firm formed in 2020 comprised of former energy & technology CEOs that bring their experience (and personal…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 contacts → | ||||
Partial evidence “Quintana Infrastructure & Development LLC, along with its partners, invests in and administers companies mostly focused on middle-market infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Strong evidence “Cimbria Capital is a private equity investment firm based in Texas founded by Brian V.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 6 contacts → | ||||
Indirect evidence “At the Catalyst Group, we believe long-term partnerships with business owners, entrepreneurs and employees produce the greatest outcomes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 contacts → | ||||
Indirect evidence “We're interested in acquiring an exceptional company for long-term growth.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 contacts → | ||||
Strong evidence “Small Ventures USA, LP (SMV) is a venture capital and private equity firm founded by William O.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Indirect evidence “A clean technology-centric ecosystem, Beam Earth provides funding for environmentally-aligned businesses and services across the investment themes of clean energy, sustainability…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Strong evidence “Private Equity firm - We are a Houston-based lower middle market private equity firm with a focus on industrial product and service companies serving the infrastructure, energy…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Partial evidence “Vista was founded by Greg Houghtaling, Kurt Keene and Brent Mann to generate attractive, risk-adjusted returns through defined investment strategies in the core areas of private…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Strong evidence “Climate Impact Capital (CIC) is an early stage focused venture capital group who sees the need for financial institutions to take a larger role in addressing climate change and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Partial evidence “Willistown Capital is a private investment firm based in Houston, Texas.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Indirect evidence “We're a minority-owned - Houston, Texas based investment group, established in 2019, investing in passionate entrepreneurs, strong management teams and innovative businesses.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “The ambition to reduce energy poverty and achieve net zero has created a global tailwind in energy.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Partial evidence “Albatross Capital Partners is a private investment firm with offices in both Orange County, CA and Houston, TX.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “Carnrite Ventures is a venture capital firm that invests in technology companies across the United States.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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: impact-focused 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 impact-focused private equity firms.
- Partial evidence
- Its own public description names part of impact-focused 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 impact-focused 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 79 impact-focused private equity firms based in Houston, United States
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Impact-focused private equity firms based in Houston, United States at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 79 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 impact-focused 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 Houston, United States whose own description of what they do matches “impact-focused 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 impact-focused 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 impact-focused private equity firms, and records with no verified work email. Companies headquartered outside Houston 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, 224 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.
Impact-focused private equity firms by metro in the United States
- Impact-focused private equity firms in New York519
- Impact-focused private equity firms in San Francisco165
- Impact-focused private equity firms in Chicago143
- Impact-focused private equity firms in Los Angeles120
- Impact-focused private equity firms in Dallas106
- Impact-focused private equity firms in Boston97
- Impact-focused private equity firms in Austin86
- Impact-focused private equity firms in Miami83
- Impact-focused private equity firms in Washington75
- Impact-focused private equity firms in Atlanta69
- Impact-focused private equity firms in Denver56
- Impact-focused private equity firms in Seattle39
- Impact-focused private equity firms in Charlotte36
- Impact-focused private equity firms in San Diego31
- Impact-focused private equity firms in Palo Alto29
- Impact-focused private equity firms in Philadelphia29
- Impact-focused private equity firms in New York City28
- Impact-focused private equity firms in Salt Lake City26
- Impact-focused private equity firms in Nashville25
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 impact-focused 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 impact-focused private equity firms are there based in Houston, United States?
RevenueBase identified 79 impact-focused private equity firms headquartered in Houston, 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 Sterling Group, headquartered in Houston, tops this list with the largest team on record.
Which city in the United States has the most impact-focused private equity firms?
New York leads the United States with 519 headquartered companies, followed by San Francisco (165) and Chicago (143). Houston has 79.
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 224 verified decision-maker contacts tracked across these 79 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.
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