Company lists · Data refreshed September 2026

Top 17 Drug development biotechnology firms based in South San Francisco, United States

RevenueBase identified 29 company matches for drug development biotechnology firms associated with South San Francisco, United States as of September 2026 and tracks 19,271 professional contacts across them, including 8,837 with verified work emails. Across the United States, San Diego is the largest hub for this category (100 companies); South San Francisco has 29.

This list covers company matches for drug development biotechnology firms associated with South San Francisco, 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 September 16, 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 Sep 16, 2026 How this list was built
29Companies
19,271Contacts tracked
8,837Verified emails
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The 17 largest drug development biotechnology firms based in South San Francisco, United States

Ranked by team size
Top 17 of 29 company matches for drug development biotechnology firms based in South San Francisco, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202610001+17,217 contacts →

Exact match

“About Genentech We're passionate about finding solutions for people facing the world's most difficult-to-treat conditions.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202651-200291 contacts →

Exact match

“Rigel Pharmaceuticals, Inc, is a biotechnology company dedicated to discovering, developing and providing novel small molecule drugs that significantly improve the lives of…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 2026201-500282 contacts →

Exact match

“Sutro Biopharma, Inc, is relentlessly focused on the discovery and development of precisely designed cancer therapeutics to transform what science can do for patients.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 2026501-1,000223 contacts →

Exact match

“Formerly based in South San Francisco, California, Onyx Pharmaceuticals was engaged in the development and commercialization of innovative therapies for improving the lives of…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202611-50116 contacts →

Exact match

“NGM Bio is a biopharmaceutical company focused on discovering and developing novel, life-changing medicines for people whose health and lives have been disrupted by disease.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202651-200100 contacts →

Exact match

“CytomX Therapeutics, Inc.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202611-5075 contacts →

Exact match

“Circle Pharma initiated operations in June 2014 with seed funding from Pfizer, Inc.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202611-5043 contacts →

Exact match

“Our mission is to cure age-related disease by moving successful therapeutics toward clinical trials within months, not years.#CreatingTime”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202651-20036 contacts →

Exact match

“RemeGen Biosciences is a biopharmaceutical company, focusing on the discovery and development of innovative medicines for the treatment of cancer and autoimmune diseases, based in…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202611-5020 contacts →

Exact match

“Founded by life sciences venture capital firm ATP and renowned scientists at the University of California San Francisco (UCSF), Nine Square is uniting machine learning-enabled…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 20261-1018 contacts →

Exact match

“At Apertor we have developed a new class of therapeutics to address one of the toughest challenges in drug discovery, selective disruption of disease-causing protein-protein…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202611-5017 contacts →

Exact match

“R2M Pharma is a fast growing biotechnology research organization devoted to the discovery of high quality small molecules preclinical development compounds for the treatment of…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 20261-1016 contacts →

Exact match

“LiVeritas Biosciences enables biopharma companies to fast track drug research & development (R&D) process through mass spectrometry (MS) and digital transformation.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202611-5015 contacts →

Exact match

“Initial Therapeutics is discovering and developing a new class of small-molecule medicines designed to halt pathogenic protein formation in the earliest stages.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202611-5013 contacts →

Exact match

“Pragma Bio exists to find cures for undruggable immunological disorders.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 20261-107 contacts →

Exact match

“IgGenix is a clinical-stage, venture backed biotechnology company founded on breakthrough advances in Steve Quake’s laboratory at Stanford in collaboration with allergy clinician…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 16, 202611-507 contacts →

Exact match

“Differentia provides knowledge-empowered modeling and simulation services for effective drug development.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

Showing 17 of 29 drug development biotechnology firms based in South San Francisco, United States

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Drug development biotechnology firms based in South San Francisco, United States at a glance

As of Sep 16, 2026
45.9%Verified-email coverage
664.5Average contacts per company
11-50Median size (employees)
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
8
11-50
11
51-200
5
201-500
1
501-1,000
2
10001+
1

Email recency for this list is measured across the whole United States list rather than for South San Francisco, so it is reported there. Company counts and contact totals on this page are exact for South San Francisco, over 29 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 South San Francisco, United States whose business descriptions match “drug development biotechnology firms” 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 8,837 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 September 16, 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 “drug development biotechnology firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many drug development biotechnology firms are there based in South San Francisco, United States?

RevenueBase identified 29 company matches for drug development biotechnology firms associated with South San Francisco, United States as of September 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?

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

Which city in the United States has the most drug development biotechnology firms?

San Diego leads the United States with 100 company records, followed by Boston (81) and Cambridge (70). South San Francisco has 29.

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 8,837 professional contacts with verified work emails tracked across these 29 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 September 16, 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.