Company lists · Data refreshed September 2026

Top 25 Immunotherapy biotech companies based in the United States

Name: Immunotherapy biotech companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 959 companies tracked

RevenueBase identified 959 immunotherapy biotech companies headquartered in the United States as of September 2026 and tracks 180,288 professional contacts across them, including 90,562 with verified work emails. San Diego is the largest hub.

This list covers immunotherapy biotech companies 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 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 15, 2026 86% judged on-target in blind review

959Companies

180,288Contacts tracked

90,562Verified emails

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The 25 largest immunotherapy biotech companies based in the United States

Ranked by team size

Top 25 of 959 immunotherapy biotech companies based in the United States, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to immunotherapy biotech companies: 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	Abbvie	Indirect evidence	North Chicago, IL, United StatesHQ checked Sep 15, 2026	10001+	50,568 contacts →
	Indirect evidence “AbbVie is a global biopharmaceutical company focused on creating medicines and solutions that put impact first, for patients, communities, and our world.” Source: RevenueBase Database · checked Sep 15, 2026
2	Bristol Myers Squibb	Indirect evidence	Lawrence Township, NJ, United StatesHQ checked Sep 15, 2026	10001+	36,379 contacts →
	Indirect evidence “At Bristol Myers Squibb, we work every day to transform patients’ lives through science.” Source: RevenueBase Database · checked Sep 15, 2026
3	AMGEN	Indirect evidence	Thousand Oaks, CA, United StatesHQ checked Sep 15, 2026	10001+	33,433 contacts →
	Indirect evidence “Amgen harnesses the best of biology and technology to fight the world’s toughest diseases, and make people’s lives easier, fuller and longer.” Source: RevenueBase Database · checked Sep 15, 2026
4	Biogen	Partial evidence	Cambridge, MA, United StatesHQ checked Sep 15, 2026	5,001-10,000	10,389 contacts →
	Partial evidence “Founded in 1978, Biogen is a leading biotechnology company that pioneers innovative science to deliver new medicines to transform patients’ lives and to create value for…” Source: RevenueBase Database · checked Sep 15, 2026
5	Kite Pharma	Indirect evidence	Santa Monica, CA, United StatesHQ checked Sep 15, 2026	1,001-5,000	3,766 contacts →
	Indirect evidence “At Kite, a Gilead Company, our singular focus is achieving cures with cell therapy.” Source: RevenueBase Database · checked Sep 15, 2026
6	Incyte	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 15, 2026	1,001-5,000	3,224 contacts →
	Indirect evidence “Incyte is focused on advancing biopharmaceutical innovation.” Source: RevenueBase Database · checked Sep 15, 2026
7	Legend Biotech	Partial evidence	Somerset, NJ, United StatesHQ checked Sep 15, 2026	1,001-5,000	2,154 contacts →
	Partial evidence “Legend Biotech is a global, commercial-stage biotechnology company developing and manufacturing novel therapies.” Source: RevenueBase Database · checked Sep 15, 2026
8	Argenx	Indirect evidence	Boston, MA, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,952 contacts →
	Indirect evidence “argenx is a global immunology company committed to improving the lives of people living with severe autoimmune diseases.” Source: RevenueBase Database · checked Sep 15, 2026
9	EMD Serono, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,578 contacts →
	Indirect evidence “We aspire to create, improve and prolong life for people living with difficult-to-treat conditions like infertility, multiple sclerosis and cancer.” Source: RevenueBase Database · checked Sep 15, 2026
10	Exelixis	Indirect evidence	Alameda, CA, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,426 contacts →
	Indirect evidence “Every Exelixis employee is united in an ambitious cause: to transform science into new treatments that give cancer patients and their families hope for the future.” Source: RevenueBase Database · checked Sep 15, 2026
11	Genscript	Partial evidence	Piscataway, NJ, United StatesHQ checked Sep 15, 2026	5,001-10,000	1,194 contacts →
	Partial evidence “GenScript Life Science Group is a part of GenScript Biotech Corporation.” Source: RevenueBase Database · checked Sep 15, 2026
12	Iovance Biotherapeutics, INC	Indirect evidence	San Carlos, CA, United StatesHQ checked Sep 15, 2026	501-1,000	985 contacts →
	Indirect evidence “Iovance Biotherapeutics (NASDAQ: IOVA) aims to be the global leader in innovating, developing and delivering tumor infiltrating lymphocyte (TIL) therapies for patients with cancer.” Source: RevenueBase Database · checked Sep 15, 2026
13	Blueprint Medicines	Indirect evidence	Cambridge, MA, United StatesHQ checked Sep 15, 2026	501-1,000	811 contacts →
	Indirect evidence “Blueprint Medicines, a Sanofi company, is a fully integrated global biopharmaceutical company that invents life-changing medicines.” Source: RevenueBase Database · checked Sep 15, 2026
14	Adaptive Biotechnologies Corp	Partial evidence	Seattle, WA, United StatesHQ checked Sep 15, 2026	501-1,000	678 contacts →
	Partial evidence “Adaptive Biotechnologies is a pioneer and leader in immune-driven medicine that aims to improve people’s lives by learning from the wisdom of their adaptive immune systems.” Source: RevenueBase Database · checked Sep 15, 2026
15	Cell Signaling Technology CST	Indirect evidence	Danvers, MA, United StatesHQ checked Sep 15, 2026	501-1,000	678 contacts →
	Indirect evidence “Founded by research scientists in Cell Signaling Technology (CST) is a private, family-owned company that prides itself on operating as a research institute developing quality…” Source: RevenueBase Database · checked Sep 15, 2026
16	Dendreon	Partial evidence	Seal Beach, CA, United StatesHQ checked Sep 15, 2026	501-1,000	637 contacts →
	Partial evidence “Dendreon is a commercial-stage biopharmaceutical company and pioneer in the development of immunotherapy.” Source: RevenueBase Database · checked Sep 15, 2026
17	Arcus Biosciences	Indirect evidence	Hayward, CA, United StatesHQ checked Sep 15, 2026	501-1,000	632 contacts →
	Indirect evidence “Arcus Biosciences is a rapidly growing, clinical-stage, global biopharmaceutical company developing differentiated molecules and combination medicines that may have the potential…” Source: RevenueBase Database · checked Sep 15, 2026
18	Immunitybio, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 15, 2026	501-1,000	591 contacts →
	Partial evidence “ImmunityBio, Inc.(formerly NantKwest, Inc.) is developing cell and immunotherapy products that are designed to help strengthen each patient’s natural immune system, potentially…” Source: RevenueBase Database · checked Sep 15, 2026
19	Replimune	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 15, 2026	201-500	479 contacts →
	Indirect evidence “Replimune's mission is to revolutionize cancer treatment with therapies designed to activate a powerful and durable full-body anti-tumor response.” Source: RevenueBase Database · checked Sep 15, 2026
20	Macrogenics, INC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 15, 2026	201-500	408 contacts →
	Indirect evidence “MacroGenics is a leader in the discovery and development of innovative medicines that utilize our next generation antibody-based technologies.” Source: RevenueBase Database · checked Sep 15, 2026
21	Immunovant	Indirect evidence	NY, United StatesHQ checked Sep 15, 2026	201-500	355 contacts →
	Indirect evidence “Immunovant, Inc.” Source: RevenueBase Database · checked Sep 15, 2026
22	Syndax Pharmaceuticals	Indirect evidence	New York, NY, United StatesHQ checked Sep 15, 2026	51-200	336 contacts →
	Indirect evidence “Syndax Pharmaceuticals is a commercial-stage biopharmaceutical company advancing innovative cancer therapies.” Source: RevenueBase Database · checked Sep 15, 2026
23	Pharmaessentia	Indirect evidence	Burlington, MA, United StatesHQ checked Sep 15, 2026	501-1,000	317 contacts →
	Indirect evidence “PharmaEssentia USA Corporation, a subsidiary of PharmaEssentia Corporation (TWSE: 6446), a global biopharmaceutical innovator based in Taiwan, leveraging deep expertise and proven…” Source: RevenueBase Database · checked Sep 15, 2026
24	Sutro Biopharma, INC	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 15, 2026	201-500	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, 2026
25	Xencor	Indirect evidence	Pasadena, CA, United StatesHQ checked Sep 15, 2026	201-500	281 contacts →
	Indirect evidence “Designing Proteins.” Source: RevenueBase Database · checked Sep 15, 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: immunotherapy biotech 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 immunotherapy biotech companies.
Partial evidence: Its own public description names part of immunotherapy biotech companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name immunotherapy biotech 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 959 immunotherapy biotech companies based in the United States

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Immunotherapy biotech companies based in the United States at a glance

As of Sep 15, 2026

50.2%Verified-email coverage

188.0Average contacts per company

11-50Median size (employees)

7.5%Largest-city concentration · San Diego

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

401

11-50

313

51-200

175

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 959 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 immunotherapy biotech 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 the United States whose own description of what they do matches “immunotherapy biotech 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 immunotherapy biotech 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 immunotherapy biotech companies, 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, 90,562 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.

Immunotherapy biotech companies 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 immunotherapy biotech 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 immunotherapy biotech companies are there based in the United States?

RevenueBase identified 959 immunotherapy biotech companies 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?

Abbvie, headquartered in North Chicago, tops this list with the largest team on record.

Which city has the most immunotherapy biotech companies?

San Diego leads with 72 headquartered companies, followed by Cambridge (70) and Boston (54).

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 90,562 verified decision-maker contacts tracked across these 959 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.