Company lists · Data refreshed September 2026

Top 25 Seed stage life sciences investors based in San Francisco, United States

Name: Seed stage life sciences investors 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 17, 2026 61 companies tracked

RevenueBase identified 61 seed stage life sciences investors headquartered in San Francisco, United States as of September 2026 and tracks 669 professional contacts across them, including 272 with verified work emails. New York is the largest hub.

This list covers seed stage life sciences investors 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 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

61Companies

669Contacts tracked

272Verified emails

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The 25 largest seed stage life sciences investors based in San Francisco, United States

Ranked by team size

Top 25 of 61 seed stage life sciences investors based in San Francisco, 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	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
2	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
3	Sosv SF & NY FKA Indiebio	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	n/a	45 contacts →
	Indirect evidence “IndieBio is now known as SOSV NY and SOSV SF.” Source: RevenueBase Database · checked Sep 17, 2026
4	5am Ventures	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	43 contacts →
	Strong evidence “5AM was founded in 2002 and pursues investments in advanced life science innovations, and seeks to be diversified across the biopharmaceutical therapeutics, and platform…” Source: RevenueBase Database · checked Sep 17, 2026
5	Define Ventures	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	29 contacts →
	Partial evidence “Define Ventures is one of the largest funds exclusively focused on early-stage digital health companies with $800 million in assets under management.” Source: RevenueBase Database · checked Sep 17, 2026
6	Altair Capital	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	27 contacts →
	Partial evidence “AltaIR Capital is an international early-stage venture investment company.” Source: RevenueBase Database · checked Sep 17, 2026
7	The Column Group	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	25 contacts →
	Strong evidence “The Column Group (TCG) is a science-driven venture capital firm that makes significant financial and operational commitments to build early stage drug discovery companies based on…” Source: RevenueBase Database · checked Sep 17, 2026
8	BEE Partners	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	19 contacts →
	Indirect evidence “At Bee Partners, we passionately believe today’s decades-long supercycle of AI-enabled machines will transform our world via software, hardware, and biology.” Source: RevenueBase Database · checked Sep 17, 2026
9	Illumina Ventures	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	18 contacts →
	Partial evidence “Illumina Ventures is an independently managed firm focused on early-stage companies that are pioneering new applications of genomics and enabling precision medicine.” Source: RevenueBase Database · checked Sep 17, 2026
10	Greatpoint Ventures	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “GreatPoint Ventures is an early-stage venture capital firm founded by entrepreneurs and operators who've built companies cumulatively worth $300 billion.” Source: RevenueBase Database · checked Sep 17, 2026
11	Health Velocity Capital	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	15 contacts →
	Partial evidence “Health Velocity Capital invests in growth-stage healthcare software and services companies.” Source: RevenueBase Database · checked Sep 17, 2026
12	Jazz Venture Partners	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “JAZZ invests in companies that unlock human potential.” Source: RevenueBase Database · checked Sep 17, 2026
13	H7 Biocapital	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	14 contacts →
	Strong evidence “Headquartered in Silicon Valley, H7 BioCapital is a venture capital firm dedicated to life science investment and Licensing & Strategic Partnership in the pharmaceutical industry.” Source: RevenueBase Database · checked Sep 17, 2026
14	Alix Ventures	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	12 contacts →
	Strong evidence “Alix Ventures: Driving Patient Impact - Supporting early stage Life Science startups engineering biology to drive radical advances in human health Born from our collective…” Source: RevenueBase Database · checked Sep 17, 2026
15	Breakout Ventures	Partial evidence	San Francisco, United StatesHQ checked Sep 17, 2026	1-10	10 contacts →
	Partial evidence “Biotech, tech-bio, deep tech, hard tech, chem tech… whatever you call this frontier of science and technology, we've been here for over a decade.” Source: RevenueBase Database · checked Sep 17, 2026
16	Telegraph Hill Partners	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	10 contacts →
	Strong evidence “Telegraph Hill Partners is a venture capital and growth equity firm dedicated to helping life science, medical device and healthcare companies achieve their growth objectives.” Source: RevenueBase Database · checked Sep 17, 2026
17	AXIAL	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	9 contacts →
	Indirect evidence “Axial partners with great founders and inventors.” Source: RevenueBase Database · checked Sep 17, 2026
18	Haystack	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	7 contacts →
	Strong evidence “Since 2013, Haystack has made approximately 290 pre-seed or seed-stage investments, of which (after proactively marking down our portfolios in 2022), we have over 60 companies…” Source: RevenueBase Database · checked Sep 17, 2026
19	Rock Health Capital	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “We invest in remarkable entrepreneurs working at the intersection of healthcare and technology.” Source: RevenueBase Database · checked Sep 17, 2026
20	Focus Academy, LLC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “Focus Academy enables emerging international biotech companies to enter and thrive in the US market by providing in-depth business, market, and product development programming.” Source: RevenueBase Database · checked Sep 17, 2026
21	babel.ventures	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	7 contacts →
	Partial evidence “BABEL Ventures is leading the charge in early-stage consumer biotech investments.” Source: RevenueBase Database · checked Sep 17, 2026
22	DAY ONE Ventures	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “Day One Ventures is an early-stage venture capital firm that backs customer-obsessed companies and spearheads their communications.” Source: RevenueBase Database · checked Sep 17, 2026
23	Initiate Ventures	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	6 contacts →
	Strong evidence “INITIATE funds and co-creates transformational companies - We focus on bold ideas at the intersection of healthcare, life sciences and technology - We are entrepreneurs and…” Source: RevenueBase Database · checked Sep 17, 2026
24	Convergent Ventures	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	1-10	6 contacts →
	Strong evidence “Convergent Ventures was founded by Frank Levinson, Julia Davourie, Christina Jenkins and Zach Jonasson to pursue seed-stage investments in outstanding founding teams focused on…” Source: RevenueBase Database · checked Sep 17, 2026
25	Aquilo Partners, L.P	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	11-50	5 contacts →
	Strong evidence “Aquilo Partners is a life science investment bank specializing in mergers & acquisitions, licensing/partnership transactions and private placements.” 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 61 seed stage life sciences investors based in San Francisco, United States

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Seed stage life sciences investors based in San Francisco, United States at a glance

As of Sep 17, 2026

40.7%Verified-email coverage

11.0Average contacts per company

1-10Median size (employees)

168.9%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 61 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 San Francisco, 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 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, 272 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 in the United States

Seed stage life sciences investors in New York103
Seed stage life sciences investors in San Francisco61
Seed stage life sciences investors in Boston57
Seed stage life sciences investors in Palo Alto27
Seed stage life sciences investors in Chicago25

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 San Francisco, United States?

RevenueBase identified 61 seed stage life sciences investors 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?

Canaan, headquartered in San Francisco, 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 272 verified decision-maker contacts tracked across these 61 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.