Company lists · Data refreshed November 2026

Top 25 Series a startups based in the United States

RevenueBase identified 165 company matches for series a startups associated with the United States as of November 2026 and tracks 1,806 professional contacts across them, including 602 with verified work emails. San Francisco is the largest hub.

This list covers company matches for series a startups associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
165Companies
1,806Contacts tracked
602Verified emails
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The 25 largest series a startups based in the United States

Ranked by team size
Top 25 of 165 company matches for series a startups based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMenlo Park, CA, United StatesHQ recorded Nov 6, 2026n/a152 contacts →

Exact match

“We’re specialists in pre-seed and seed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMenlo Park, CA, United StatesHQ recorded Nov 6, 202651-200114 contacts →

Exact match

“Greylock was founded in 1965, one of the few venture firms that predates Silicon Valley.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPalo Alto, CA, United StatesHQ recorded Nov 6, 202611-50101 contacts →

Exact match

“UpHonest Capital is an early-stage venture capital based in Silicon Valley.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202651-20093 contacts →

Exact match

“The Band of Angels is Silicon Valley's oldest seed funding organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchFoster City, CA, United StatesHQ recorded Nov 6, 202611-5075 contacts →

Exact match

“Scale backs Founders who can go the distance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMenlo Park, CA, United StatesHQ recorded Nov 6, 202611-5057 contacts →

Exact match

“For more than 56 years, we’ve partnered with founders from their first idea through the long arc of building iconic companies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5051 contacts →

Exact match

“Crosslink, founded in 1989, is a premier early-stage venture capital firm with over $4.2B in assets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026n/a48 contacts →

Exact match

“645 Ventures is an early-stage venture capital firm that partners with exceptional founders who are building iconic companies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5046 contacts →

Exact match

“Emergence Capital invests in people who change the way the world works.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“https://susaventures.com/”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“For more than 20 years, Uncork has focused on one stage: seed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“We set the standard in seed stage venture capital, backing founders with grit, audacity, and a spark of rebellion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSalt Lake City, UT, United StatesHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“EPIC Ventures is a Salt Lake City based early-stage venture capital firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPalo Alto, CA, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Defining the future of venture.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMenlo Park, CA, United StatesHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“Early-stage VCs, partnering with visionary founders at the threshold of explosive growth”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNyc, NY, United StatesHQ recorded Nov 6, 20261-1025 contacts →

Exact match

“Comma Capital is a pre-seed and seed fund based in New York focused on backing founders at the earliest of phases of company formation and scaling.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“We are a San Francisco and Lisbon-based VC investing in the early stages, including Seed and pre-Seed with follow-ons on Series A, focusing on fast-growing companies with a clear…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSausalito, CA, United StatesHQ recorded Nov 6, 20261-1024 contacts →

Exact match

“We invest in technology companies in seed, angels, pre-A and A stages.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“GreatPoint Ventures is an early-stage venture capital firm founded by entrepreneurs and operators who've built companies cumulatively worth $300 billion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPortola Valley, CA, United StatesHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Shasta is an early-stage venture capital firm with over a billion dollars under management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 20261-1016 contacts →

Exact match

“Seraph Group is an early-stage venture firm that offers investors a diversified portfolio of technology startups, and entrepreneurs between $100K to $2M in seed and early stage…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchChicago, United StatesHQ recorded Nov 6, 20261-1014 contacts →

Exact match

“Born out of a love for building startups and a passion for backing entrepreneurs with heart, Corazon Capital (Spanish for “heart”), a leading Chicago-based venture fund, brings a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchAnaheim, CA, United StatesHQ recorded Nov 6, 20261-1014 contacts →

Exact match

“At Collinear Capital, we’re redefining how enterprise technology thrives by unlocking the untapped potential of individual consultants, systems integrators, and enterprise…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMinneapolis, MN, United StatesHQ recorded Nov 6, 20261-1013 contacts →

Exact match

“We are the next generation of startup accelerator.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLos Altos, CA, United StatesHQ recorded Nov 6, 20261-1012 contacts →

Exact match

“Early stage Deep Tech VC fund focused on transformation of industries Series A and Pre-Series A focus”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 165 series a startups based in the United States

See the full list, filter by size, metro and specialty, and access 602 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Series a startups based in the United States at a glance

As of Nov 6, 2026
33.3%Verified-email coverage
10.9Average contacts per company
1-10Median size (employees)
20.6%Largest-city concentration · San Francisco
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
124
11-50
37
51-200
4

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 165 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United States whose business descriptions match “series a startups” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 602 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “series a startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many series a startups are there based in the United States?

RevenueBase identified 165 company matches for series a startups associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Pear VC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most series a startups?

San Francisco leads with 34 company records, followed by New York (28) and Chicago (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 602 professional contacts with verified work emails tracked across these 165 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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.