Company lists · Data refreshed September 2026
Top 25 Angel funded startups based in the United States
RevenueBase identified 1,099 angel funded startups headquartered in the United States as of September 2026 and tracks 19,466 professional contacts across them, including 4,455 with verified work emails. San Francisco is the largest hub.
This list covers angel funded startups headquartered in the 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 19, 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 angel funded startups based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,283 contacts → | ||||
Partial evidence “Y Combinator is the leading startup accelerator for entrepreneurs.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 932 contacts → | ||||
Indirect evidence “Founded in 2009 by Marc Andreessen and Ben Horowitz, Andreessen Horowitz (known as "a16z") is a venture capital firm that backs bold entrepreneurs building the future through…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 411 contacts → | ||||
Indirect evidence “Founded in 2014, we’re America’s largest venture firm for individual investors and VC investing partner to over individuals and institutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 402 contacts → | ||||
Indirect evidence “Bessemer Venture Partners helps entrepreneurs lay strong foundations from inception to build long-standing companies.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 321 contacts → | ||||
Indirect evidence “The Alchemist Accelerator is a venture-backed initiative focused on accelerating the development of seed-stage ventures that monetize from enterprises (not consumers).” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 277 contacts → | ||||
Indirect evidence “New Enterprise Associates, Inc.(NEA) is a global venture capital firm focused on helping entrepreneurs build transformational businesses across multiple stages, sectors and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 247 contacts → | ||||
Indirect evidence “NextGen Venture Partners works with over 1,800 Venture Partners to invest $1 million in seed stage companies and $2 million to $10 million in companies with more than $10 million…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 205 contacts → | ||||
Indirect evidence “For five decades, Kleiner Perkins has partnered with intrepid founders to build iconic companies that made history.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 205 contacts → | ||||
Indirect evidence “DFJ is a venture capital firm that partners with extraordinary entrepreneurs who are changing the world.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 204 contacts → | ||||
Partial evidence “GoAhead Ventures is a Venture Capital fund based in Silicon Valley managing over $250M in AUM.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 199 contacts → | ||||
Indirect evidence “First Round is a venture capital firm that works with founders exclusively at the earliest stages of company building, often when all they have is an “imagine if.” We fill in…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 166 contacts → | ||||
Indirect evidence “Headline is a venture capital firm with teams on the ground in 8 cities around the world.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 160 contacts → | ||||
Partial evidence “8VC is a venture capital fund based in Austin, Texas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 157 contacts → | ||||
Indirect evidence “We’re specialists in pre-seed and seed.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 144 contacts → | ||||
Strong evidence “We are a fund of 500+ Y Combinator alumni working together to invest in top Y Combinator startups.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 122 contacts → | ||||
Indirect evidence “Atomic is the venture studio that pioneered the model of starting companies by pairing founders with the best ideas, teams, and resources.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 114 contacts → | ||||
Partial evidence “Entrepreneurs Roundtable Accelerator (ERA) is New York City’s leading technology accelerator and early-stage venture capital fund.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 111 contacts → | ||||
Indirect evidence “Greylock was founded in 1965, one of the few venture firms that predates Silicon Valley.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 109 contacts → | ||||
Indirect evidence “FA Technology Ventures is an independent, established venture capital firm.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 107 contacts → | ||||
Indirect evidence “Digital Entertainment Ventures (DEV) is an investing platform that focuses on early stage companies building transformative products in digital media and commerce.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 106 contacts → | ||||
Partial evidence “Sand Hill Angels is a group of Silicon Valley angel investors passionate about helping entrepreneurs get to the next level.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 104 contacts → | ||||
Indirect evidence “Canaan is an early stage venture capital firm that invests in entrepreneurs with visionary ideas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 102 contacts → | ||||
Indirect evidence “DTC invests in determined early-stage founders who push the envelope on technology innovation for the enterprise, connecting them to the capital, expertise, and customers they…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 100 contacts → | ||||
Indirect evidence “WI Harper Group is a pioneering venture capital firm with over three decades of experience investing in transformative companies that shape the future.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 97 contacts → | ||||
Strong evidence “The Band of Angels is Silicon Valley's oldest seed funding organization.” Source: RevenueBase Database · checked Sep 19, 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: angel funded startups. 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 angel funded startups.
- Partial evidence
- Its own public description names part of angel funded startups, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name angel funded startups. 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 1,099 angel funded startups based in the United States
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Angel funded startups based in the United States at a glance
As of Sep 19, 2026Companies by employee count
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 1,099 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 angel funded startups, 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 the United States whose own description of what they do matches “angel funded startups”. 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 angel funded startups), 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 angel funded startups, and records with no verified work email. Companies headquartered outside United States 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, 4,455 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 19, 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.
Angel funded startups by metro
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 angel funded startups, 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 angel funded startups are there based in the United States?
RevenueBase identified 1,099 angel funded startups headquartered in the 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?
Y Combinator, headquartered in San Francisco, tops this list with the largest team on record.
Which city has the most angel funded startups?
San Francisco leads with 152 headquartered companies, followed by New York (129) and Palo Alto (45).
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 4,455 verified decision-maker contacts tracked across these 1,099 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 19, 2026.
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Angel funded startups by geography
- Angel funded startups based in Austin, United States
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- Angel funded startups based in Menlo Park, United States
- Angel funded startups based in New York, United States
- Angel funded startups based in Palo Alto, United States
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- Angel funded startups based in Canada
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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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