Company lists · Data refreshed September 2026

Top 25 Seed stage life sciences investors based in the United States

Name: Seed stage life sciences investors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 854 companies tracked

RevenueBase identified 854 seed stage life sciences investors headquartered in the United States as of September 2026 and tracks 8,587 professional contacts across them, including 3,652 with verified work emails. New York is the largest hub.

This list covers seed stage life sciences investors 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 17, 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 17, 2026 86% judged on-target in blind review

854Companies

8,587Contacts tracked

3,652Verified emails

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The 25 largest seed stage life sciences investors based in the United States

Ranked by team size

Top 25 of 854 seed stage life sciences investors based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to seed stage life sciences investors: 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	NEW Enterprise Associates NEA	Partial evidence	Menlo Park, CA, United StatesHQ checked Sep 17, 2026	51-200	277 contacts →
	Partial 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 17, 2026
2	RA Capital Management	Strong evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	201-500	251 contacts →
	Strong evidence “Founded in 2004, RA Capital Management is an active, multi-stage investment manager dedicated to evidence-based, science-led investing in public and private healthcare, life…” Source: RevenueBase Database · checked Sep 17, 2026
3	Kleiner Perkins	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 17, 2026	n/a	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 17, 2026
4	SANTÉ	Strong evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	11-50	149 contacts →
	Strong evidence “Founded in 2006, Santé Ventures is a specialized healthcare and life sciences investment firm with roughly $1 billion in capital under management, across five funds.” Source: RevenueBase Database · checked Sep 17, 2026
5	Atlas Venture	Indirect evidence	Cambridge, MA, United StatesHQ checked Sep 17, 2026	11-50	123 contacts →
	Indirect evidence “Atlas Venture is a leading biotech venture capital firm.” Source: RevenueBase Database · checked Sep 17, 2026
6	SOSV	Partial evidence	Princeton, NJ, United StatesHQ checked Sep 17, 2026	51-200	119 contacts →
	Partial evidence “SOSV is the most active deep tech venture capital firm globally, investing at pre-seed (or at startup inception) supporting visionary founders intent on making a profound impact…” Source: RevenueBase Database · checked Sep 17, 2026
7	Labcentral	Strong evidence	Cambridge, MA, United StatesHQ checked Sep 17, 2026	51-200	116 contacts →
	Strong evidence “LabCentral is Cambridge, MA's premier network of shared laboratory spaces and scientific communities, designed to jumpstart the launch of promising early-stage life-sciences…” Source: RevenueBase Database · checked Sep 17, 2026
8	RTW Investments, LP	Strong evidence	New York, NY, United StatesHQ checked Sep 17, 2026	51-200	116 contacts →
	Strong evidence “RTW is a life sciences investment and innovation firm.” Source: RevenueBase Database · checked Sep 17, 2026
9	curie.bio	Indirect evidence	Remote, United StatesHQ checked Sep 17, 2026	51-200	115 contacts →
	Indirect evidence “Curie.Bio is a venture capital firm that helps founders discover and develop important new medicines.” Source: RevenueBase Database · checked Sep 17, 2026
10	Third Rock Ventures	Partial evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	51-200	113 contacts →
	Partial evidence “We discover, launch and build great companies based on bold ideas that meet at the intersection of science, strategy, business and medicine – where transformational science meets…” Source: RevenueBase Database · checked Sep 17, 2026
11	F-Prime	Strong evidence	Cambridge, MA, United StatesHQ checked Sep 17, 2026	11-50	107 contacts →
	Strong evidence “F-Prime enables companies to turn their boldest ambitions into world-changing breakthroughs in life sciences, technology, healthtech + services, and crypto.” Source: RevenueBase Database · checked Sep 17, 2026
12	Canaan	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	104 contacts →
	Partial evidence “Canaan is an early stage venture capital firm that invests in entrepreneurs with visionary ideas.” Source: RevenueBase Database · checked Sep 17, 2026
13	Imedglobal Corporation	Indirect evidence	Fort Washington, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	99 contacts →
	Indirect evidence “iMEDGlobal and FMD K&L are now rebranded as ClinChoice Inc.” Source: RevenueBase Database · checked Sep 17, 2026
14	MPM Bioimpact	Indirect evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	11-50	95 contacts →
	Indirect evidence “MPM BioImpact is a world-leading biotechnology investment firm with nearly three decades of experience creating and investing in companies that seek to translate scientific…” Source: RevenueBase Database · checked Sep 17, 2026
15	Madrona	Strong evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	11-50	84 contacts →
	Strong evidence “Seed, early stage and acceleration stage investor and partner for founders.” Source: RevenueBase Database · checked Sep 17, 2026
16	Drive Capital	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 17, 2026	11-50	81 contacts →
	Indirect evidence “Venture Capital firm helping founders build the next generation of world class companies.” Source: RevenueBase Database · checked Sep 17, 2026
17	Venrock	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 17, 2026	51-200	71 contacts →
	Indirect evidence “Originally established as the venture capital arm of the Rockefeller family in 1969, Venrock partners with entrepreneurs to build some of the world’s most disruptive, successful…” Source: RevenueBase Database · checked Sep 17, 2026
18	Launchpad Venture Group	Strong evidence	Newton, MA, United StatesHQ checked Sep 17, 2026	n/a	69 contacts →
	Strong evidence “Launchpad Venture Group is a Boston-area angel investing group focused on locally based, early stage companies, primarily in high tech and life sciences.” Source: RevenueBase Database · checked Sep 17, 2026
19	Portal Innovations	Strong evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	11-50	67 contacts →
	Strong evidence “Portal Innovations is a premier venture development engine that bridges scientific ideation in life sciences, medtech, and bioinformatics through commercial proof of concept by…” Source: RevenueBase Database · checked Sep 17, 2026
20	Arch Venture Partners	Strong evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	11-50	62 contacts →
	Strong evidence “Early stage venture firm focused on life science discoveries to prevent, detect and cure disease.” Source: RevenueBase Database · checked Sep 17, 2026
21	Versant Ventures	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	61 contacts →
	Indirect evidence “Versant Ventures is a leading healthcare investment firm committed to helping exceptional entrepreneurs build the next generation of great companies.” Source: RevenueBase Database · checked Sep 17, 2026
22	Optum Ventures	Indirect evidence	Boston, United StatesHQ checked Sep 17, 2026	11-50	60 contacts →
	Indirect evidence “At Optum Ventures, we look for exceptional teams with data-driven technologies and services that are poised to deeply disrupt the status quo.” Source: RevenueBase Database · checked Sep 17, 2026
23	HPA	Strong evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	51-200	56 contacts →
	Strong evidence “HPA is a leading early-stage investor.” Source: RevenueBase Database · checked Sep 17, 2026
24	BEN Franklin Technology Partners Of Southeastern Pennsylvania	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	11-50	54 contacts →
	Partial evidence “We’re (not just) investors.” Source: RevenueBase Database · checked Sep 17, 2026
25	Foresite Capital	Strong evidence	Larkspur, CA, United StatesHQ checked Sep 17, 2026	51-200	52 contacts →
	Strong evidence “Foresite Capital is a multi-stage healthcare and life sciences investment firm with ~$3.5B in assets under management (as of 06/30/24).” Source: RevenueBase Database · checked Sep 17, 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: seed stage life sciences investors. 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 seed stage life sciences investors.
Partial evidence: Its own public description names part of seed stage life sciences investors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name seed stage life sciences investors. 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 854 seed stage life sciences investors based in the United States

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Seed stage life sciences investors based in the United States at a glance

As of Sep 17, 2026

42.5%Verified-email coverage

10.1Average contacts per company

1-10Median size (employees)

12.1%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

628

11-50

189

51-200

201-500

1,001-5,000

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 854 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 seed stage life sciences investors, 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 “seed stage life sciences investors”. 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 seed stage life sciences investors), 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 seed stage life sciences investors, 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, 3,652 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 17, 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.

Seed stage life sciences investors 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 seed stage life sciences investors, 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 seed stage life sciences investors are there based in the United States?

RevenueBase identified 854 seed stage life sciences investors 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?

NEW Enterprise Associates NEA, headquartered in Menlo Park, tops this list with the largest team on record.

Which city has the most seed stage life sciences investors?

New York leads with 103 headquartered companies, followed by San Francisco (61) and Boston (57).

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 3,652 verified decision-maker contacts tracked across these 854 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 17, 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.