Company lists · Data refreshed September 2026

Top 25 Checkpoint inhibitor developers based in the United States

RevenueBase identified 230 company matches for checkpoint inhibitor developers associated with the United States as of September 2026 and tracks 6,836 professional contacts across them, including 3,234 with verified work emails. Cambridge is the largest hub.

This list covers company matches for checkpoint inhibitor developers associated with the 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 19, 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 19, 2026 How this list was built
230Companies
6,836Contacts tracked
3,234Verified emails
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The 25 largest checkpoint inhibitor developers based in the United States

Ranked by team size
Top 25 of 230 company matches for checkpoint inhibitor developers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchSeal Beach, CA, United StatesHQ recorded Sep 19, 2026501-1,000637 contacts →

Exact match

“Dendreon is a commercial-stage biopharmaceutical company and pioneer in the development of immunotherapy.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 2026501-1,000591 contacts →

Exact match

“ImmunityBio, Inc.(formerly NantKwest, Inc.) is developing cell and immunotherapy products that are designed to help strengthen each patient’s natural immune system, potentially…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchBoston, MA, United StatesHQ recorded Sep 19, 202651-200213 contacts →

Exact match

“AVEO is a commercial-stage, oncology-focused biopharmaceutical company committed to delivering medicines that provide a better life for patients with cancer.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchSeattle, WA, United StatesHQ recorded Sep 19, 202651-200205 contacts →

Exact match

“Umoja is developing a new approach to cancer therapy that retools a patient’s immune system in vivo, enhancing the body’s natural capacity to fight cancer.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchWaltham, MA, United StatesHQ recorded Sep 19, 202651-200190 contacts →

Exact match

“TScan is dedicated to creating life-changing T cell therapies for patients by unleashing the untapped potential of the human immune system.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchCambridge, MA, United StatesHQ recorded Sep 19, 202651-200137 contacts →

Exact match

“iTeos Therapeutics is a clinical-stage biopharmaceutical company pioneering the discovery and development of a new generation of immuno-oncology therapeutics for patients.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchNew York, NY, United StatesHQ recorded Sep 19, 202611-50135 contacts →

Exact match

“The Cancer Research Institute (CRI) is a nonprofit organization exclusively focused on advancing cancer immunotherapy through rigorous scientific research, global collaboration…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 202651-200113 contacts →

Exact match

“Janux is a clinical-stage company developing unique immunotherapies that have the potential to generate tumor-specific immune responses to attack and kill tumors without…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchBothell, WA, United StatesHQ recorded Sep 19, 202651-200111 contacts →

Exact match

“Located in Redmond WA, founded in 2014, Systimmune Inc.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchRockville, MD, United StatesHQ recorded Sep 19, 202611-5096 contacts →

Exact match

“I-Mab (NASDAQ: IMAB) is a U.S-based, global biotech company, focused on the development of precision immuno-oncology agents for the treatment of cancer.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchCambridge, MA, United StatesHQ recorded Sep 19, 2026201-50094 contacts →

Exact match

“Harbour BioMed (HKEX: 02142) is a global biopharmaceutical company committed to the discovery, development and commercialization of novel antibody therapeutics focusing on…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchCambridge, MA, United StatesHQ recorded Sep 19, 202651-20087 contacts →

Exact match

“Repertoire Immune Medicines is a biotechnology company dedicated to creating treatments for diseases based on the power of the human T cell repertoire to eliminate cancer cells…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchMenlo Park, CA, United StatesHQ recorded Sep 19, 202651-20083 contacts →

Exact match

“Synthekine is an engineered cytokine therapeutics company developing disease-optimized treatments.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchLexington, MA, United StatesHQ recorded Sep 19, 202611-5077 contacts →

Exact match

“Curis is a publicly-traded biotechnology company (NASDAQ: CRIS) focused on the development of first-in-class and innovative therapeutics or the treatment of cancer.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 202611-5072 contacts →

Exact match

“Kumquat Biosciences’ vision is to develop innovative therapies to bring about sustainable and life-changing benefits to cancer patients.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchNeedham, MA, United StatesHQ recorded Sep 19, 202651-20070 contacts →

Exact match

“Candel ($CADL) is a clinical stage biopharmaceutical company focused on developing off-the-shelf multimodal biological immunotherapies that elicit an individualized, systemic…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchRockville, MD, United StatesHQ recorded Sep 19, 202651-20068 contacts →

Exact match

“Based in Rockville, Maryland, OncoC4 is a privately held, late clinical-stage biopharmaceutical company that is actively engaged in the discovery and development of novel…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 19, 202651-20068 contacts →

Exact match

“In 2015, Pionyr Immunotherapeutics embarked on a journey to forge a new path in immuno-oncology for patients in need.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchBoston, MA, United StatesHQ recorded Sep 19, 202651-20067 contacts →

Exact match

“Pyxis Oncology is transforming the lives of patients with cancer by advancing our differentiated portfolio of biologics that specifically target tumor cells and overcome immune…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchRedwood City, CA, United StatesHQ recorded Sep 19, 202651-20066 contacts →

Exact match

“Bolt Biotherapeutics, Inc, based in the San Francisco Bay Area, is a publicly-traded biotechnology company developing Boltbody™ Immune-stimulating Antibody Conjugates (ISAC), a…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchCambridge, MA, United StatesHQ recorded Sep 19, 202651-20064 contacts →

Exact match

“HiFiBiO Therapeutics is a clinical-stage global biotech pioneering a unique high-resolution translational solution (DIS®, Drug Intelligence Science) to enhance the probability of…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchSeattle, WA, United StatesHQ recorded Sep 19, 202651-20061 contacts →

Exact match

“HDT Bio is a vaccine and immunotherapy Biotechnology company developing drugs for immunotherapy of cancers and infectious diseases with next-generation approaches designed to…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 19, 202651-20058 contacts →

Exact match

“ALX Oncology (Nasdaq: ALXO) is a clinical-stage biotechnology company advancing therapies that boost the immune system to treat cancer and extend patients’ lives.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchWaltham, MA, United StatesHQ recorded Sep 19, 202651-20057 contacts →

Exact match

“We know that drug development is both an art and a science.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchCambridge, MA, United StatesHQ recorded Sep 19, 202651-20054 contacts →

Exact match

“Based on our deep science and focused on patients in need, we develop next generation immunotherapies for hard-to-treat cancers.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 230 checkpoint inhibitor developers based in the United States

See the full list, filter by size, metro and specialty, and access 3,234 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Checkpoint inhibitor developers based in the United States at a glance

As of Sep 19, 2026
47.3%Verified-email coverage
29.7Average contacts per company
11-50Median size (employees)
9.1%Largest-city concentration · Cambridge
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
99
11-50
77
51-200
42
201-500
5
501-1,000
3
1,001-5,000
1
10001+
1

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 230 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 the United States whose business descriptions match “checkpoint inhibitor developers” 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 3,234 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 19, 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 “checkpoint inhibitor developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many checkpoint inhibitor developers are there based in the United States?

RevenueBase identified 230 company matches for checkpoint inhibitor developers associated with the 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?

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

Which city has the most checkpoint inhibitor developers?

Cambridge leads with 21 company records, followed by San Diego (19) and Boston (10).

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 3,234 professional contacts with verified work emails tracked across these 230 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 19, 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.