Company lists · Data refreshed September 2026
Top 25 Biotechnology companies based in South San Francisco, United States
RevenueBase identified 38 biotechnology companies headquartered in South San Francisco, United States as of September 2026 and tracks 19,818 professional contacts across them, including 9,742 with verified work emails. Across the United States, San Diego is the largest hub for this category (176 companies); South San Francisco has 38.
This list covers biotechnology companies headquartered in South 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 15, 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 biotechnology companies based in South San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 17,217 contacts → | ||||
Indirect evidence “About Genentech We're passionate about finding solutions for people facing the world's most difficult-to-treat conditions.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,230 contacts → | ||||
Indirect evidence “Twist Bioscience is a synthetic biology company based in South San Francisco, California.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 282 contacts → | ||||
Indirect evidence “Sutro Biopharma, Inc, is relentlessly focused on the discovery and development of precisely designed cancer therapeutics to transform what science can do for patients.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 223 contacts → | ||||
Indirect evidence “Formerly based in South San Francisco, California, Onyx Pharmaceuticals was engaged in the development and commercialization of innovative therapies for improving the lives of…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 116 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 100 contacts → | ||||
Indirect evidence “CytomX Therapeutics, Inc.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 95 contacts → | ||||
Indirect evidence “Mission Bio is a company of passionate people dedicated to solving complex biological problems with precision engineering, innovative biochemistry, and supported bioinformatics.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 75 contacts → | ||||
Indirect evidence “Circle Pharma initiated operations in June 2014 with seed funding from Pfizer, Inc.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 73 contacts → | ||||
Indirect evidence “Our mission is to create a new generation of smarter medicines that outmaneuver complex diseases in ways previously inconceivable.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 59 contacts → | ||||
Indirect evidence “We are leveraging artificial intelligence to map the glycoprotein control points that orchestrate disease progression-the missing link that genomics and proteomics can't see.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 43 contacts → | ||||
Indirect evidence “Our mission is to cure age-related disease by moving successful therapeutics toward clinical trials within months, not years.#CreatingTime” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 36 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 34 contacts → | ||||
Indirect evidence “Smash the mutants” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 27 contacts → | ||||
Indirect evidence “HI-Bio has been acquired by Biogen.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 26 contacts → | ||||
Indirect evidence “Convergent Genomics is a precision medicine company that combines advances in genomics and machine learning to detect cancer early and non-invasively.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 18 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 17 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 contacts → | ||||
Indirect evidence “LiVeritas Biosciences enables biopharma companies to fast track drug research & development (R&D) process through mass spectrometry (MS) and digital transformation.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 13 contacts → | ||||
Indirect evidence “Olio Labs develops combination therapies that deliver better outcomes with fewer side effects.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 contacts → | ||||
Indirect evidence “Pragma Bio exists to find cures for undruggable immunological disorders.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 12 contacts → | ||||
Indirect evidence “QLSF Biotherapeutics is an innovative immuno-oncology biotech startup in South San Francisco.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “Serotiny is a therapeutic discovery company that designs new genes for next generation cell & gene therapies.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Indirect evidence “OUTbio Bay Area is the first LGBTQ+ professionals’ group for the biotech industry in the SF Bay Area.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 15, 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: biotechnology companies. 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 biotechnology companies.
- Partial evidence
- Its own public description names part of biotechnology companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name biotechnology companies. 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 38 biotechnology companies based in South San Francisco, United States
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Biotechnology companies based in South San Francisco, United States at a glance
As of Sep 15, 2026Companies by employee count
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 38 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 biotechnology companies, 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 South San Francisco, United States whose own description of what they do matches “biotechnology companies”. 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 biotechnology companies), 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 biotechnology companies, and records with no verified work email. Companies headquartered outside South 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, 9,742 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 15, 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.
Biotechnology companies by metro in the United States
- Biotechnology companies in San Diego176
- Biotechnology companies in Boston107
- Biotechnology companies in Cambridge91
- Biotechnology companies in San Francisco89
- Biotechnology companies in New York71
- Biotechnology companies in Seattle37
- Biotechnology companies in Chicago35
- Biotechnology companies in Los Angeles34
- Biotechnology companies in Durham33
- Biotechnology companies in Houston32
- Biotechnology companies in Rockville31
- Biotechnology companies in Miami29
- Biotechnology companies in Philadelphia25
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 biotechnology companies, 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 biotechnology companies are there based in South San Francisco, United States?
RevenueBase identified 38 biotechnology companies headquartered in South 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?
Genentech, headquartered in South San Francisco, tops this list with the largest team on record.
Which city in the United States has the most biotechnology companies?
San Diego leads the United States with 176 headquartered companies, followed by Boston (107) and Cambridge (91). South San Francisco has 38.
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 9,742 verified decision-maker contacts tracked across these 38 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 15, 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.
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