Company lists · Data refreshed September 2026

Top 24 Biotechnology companies with development operations based in South San Francisco, United States

Name: Biotechnology companies with development operations based in South San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 36 companies tracked

RevenueBase identified 36 biotechnology companies with development operations headquartered in South San Francisco, United States as of September 2026 and tracks 20,938 professional contacts across them, including 9,942 with verified work emails. San Diego is the largest hub.

This list covers biotechnology companies with development operations 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 16, 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 16, 2026 86% judged on-target in blind review

36Companies

20,938Contacts tracked

9,942Verified emails

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The 24 largest biotechnology companies with development operations based in South San Francisco, United States

Ranked by team size

Top 24 of 36 biotechnology companies with development operations based in South San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to biotechnology companies with development operations: 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	Genentech	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	10001+	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 16, 2026
2	Twist Bioscience	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	501-1,000	1,230 contacts →
	Indirect evidence “Twist Bioscience is a synthetic biology company based in South San Francisco, California.” Source: RevenueBase Database · checked Sep 16, 2026
3	Rigel Pharmaceuticals INC	Partial evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	51-200	291 contacts →
	Partial evidence “Rigel Pharmaceuticals, Inc, is a biotechnology company dedicated to discovering, developing and providing novel small molecule drugs that significantly improve the lives of…” Source: RevenueBase Database · checked Sep 16, 2026
4	Sutro Biopharma, INC	Partial evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	201-500	282 contacts →
	Partial 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 16, 2026
5	Onyx Pharmaceuticals, Inc., An Amgen Subsidiary	Partial evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	501-1,000	223 contacts →
	Partial 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 16, 2026
6	Cellares	Partial evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	201-500	220 contacts →
	Partial evidence “Cellares is the first Integrated Development and Manufacturing Organization (IDMO), providing global cell therapy development and manufacturing services through an Industry 4.0…” Source: RevenueBase Database · checked Sep 16, 2026
7	Tenaya Therapeutics	Partial evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	51-200	119 contacts →
	Partial evidence “Tenaya Therapeutics is a clinical stage biotechnology company.” Source: RevenueBase Database · checked Sep 16, 2026
8	NGM Biopharmaceuticals	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	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 16, 2026
9	Cytomx Therapeutics	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	51-200	100 contacts →
	Indirect evidence “CytomX Therapeutics, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
10	Senti Biosciences	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	51-200	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 16, 2026
11	Addition Therapeutics	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	57 contacts →
	Indirect evidence “Addition Therapeutics is on a mission to fulfill the transformative promise of genomic medicine for people impacted by both chronic and rare diseases.” Source: RevenueBase Database · checked Sep 16, 2026
12	Gordian Biotechnology	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	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 16, 2026
13	Genedit	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	42 contacts →
	Indirect evidence “GenEdit is focused on overcoming the major challenge to genetic medicines: Delivery.” Source: RevenueBase Database · checked Sep 16, 2026
14	Remegen Biosciences	Partial evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	51-200	36 contacts →
	Partial 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 16, 2026
15	Centivax	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	34 contacts →
	Indirect evidence “Smash the mutants” Source: RevenueBase Database · checked Sep 16, 2026
16	Lyterian Therapeutics	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	31 contacts →
	Indirect evidence “Lyterian Therapeutics derives its name from the Greek word λυτήριος or lutḗrios, that defines the termination, healing, or end of disease.” Source: RevenueBase Database · checked Sep 16, 2026
17	Moonwalk Biosciences	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	25 contacts →
	Indirect evidence “Moonwalk Biosciences is pioneering novel therapeutics in adipose biology and tissue, driven by deep genetic and epigenetic evidence and insights.” Source: RevenueBase Database · checked Sep 16, 2026
18	Apertor Pharmaceuticals	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	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 16, 2026
19	R2m Pharma, INC	Strong evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	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 16, 2026
20	Liveritas Biosciences, INC	Partial evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	16 contacts →
	Partial 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 16, 2026
21	Pragma BIO	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “Pragma Bio exists to find cures for undruggable immunological disorders.” Source: RevenueBase Database · checked Sep 16, 2026
22	Qlsf Biotherapeutics, INC	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “QLSF Biotherapeutics is an innovative immuno-oncology biotech startup in South San Francisco.” Source: RevenueBase Database · checked Sep 16, 2026
23	Iggenix, INC	Partial evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	7 contacts →
	Partial 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 16, 2026
24	Serotiny	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	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 16, 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: biotechnology companies with development operations. 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 with development operations.
Partial evidence: Its own public description names part of biotechnology companies with development operations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biotechnology companies with development operations. 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 24 of 36 biotechnology companies with development operations based in South San Francisco, United States

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Biotechnology companies with development operations based in South San Francisco, United States at a glance

As of Sep 16, 2026

47.5%Verified-email coverage

581.6Average contacts per company

11-50Median size (employees)

394.4%Largest-city concentration · San Diego

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

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 36 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 with development operations, 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 with development operations”. 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 with development operations), 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 with development operations, 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, 9,942 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 16, 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 with development operations by metro in the United States

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 with development operations, 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 with development operations are there based in South San Francisco, United States?

RevenueBase identified 36 biotechnology companies with development operations 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 has the most biotechnology companies with development operations?

San Diego leads with 142 headquartered companies, followed by Cambridge (111) and Boston (91).

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 9,942 verified decision-maker contacts tracked across these 36 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 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 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.