Company lists · Data refreshed September 2026

Top 25 Clinical-stage biopharmaceutical companies based in the United States

Name: Clinical-stage biopharmaceutical 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 16, 2026 931 companies tracked

RevenueBase identified 931 clinical-stage biopharmaceutical companies headquartered in the United States as of September 2026 and tracks 223,896 professional contacts across them, including 87,257 with verified work emails. New York is the largest hub.

This list covers clinical-stage biopharmaceutical 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 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

931Companies

223,896Contacts tracked

87,257Verified emails

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The 25 largest clinical-stage biopharmaceutical companies based in the United States

Ranked by team size

Top 25 of 931 clinical-stage biopharmaceutical companies based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to clinical-stage biopharmaceutical 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	Pfizer	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	10001+	88,560 contacts →
	Indirect evidence “We’re celebrating over 175 years of daring scientific innovation-and we’re not done yet.” Source: RevenueBase Database · checked Sep 16, 2026
2	Johnson & Johnson Innovative Medicine	Indirect evidence	Titusville, NJ, United StatesHQ checked Sep 16, 2026	10001+	26,637 contacts →
	Indirect evidence “At Johnson & Johnson Innovative Medicine, we innovate with purpose, to lead where medicine is going.” Source: RevenueBase Database · checked Sep 16, 2026
3	PPD	Partial evidence	Waltham, MA, United StatesHQ checked Sep 16, 2026	10001+	20,530 contacts →
	Partial evidence “The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Source: RevenueBase Database · checked Sep 16, 2026
4	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
5	Regeneron	Indirect evidence	Tarrytown, NY, United StatesHQ checked Sep 16, 2026	10001+	16,043 contacts →
	Indirect evidence “At Regeneron we believe that when the right idea finds the right team, powerful change is possible.” Source: RevenueBase Database · checked Sep 16, 2026
6	Charles River Laboratories	Indirect evidence	Wilmington, MA, United StatesHQ checked Sep 16, 2026	10001+	14,166 contacts →
	Indirect evidence “At Charles River, we are guided by our strong purpose-to create healthier lives-which centers around the patients who rely on the therapeutics we help to develop, the animals in…” Source: RevenueBase Database · checked Sep 16, 2026
7	Premier Research	Partial evidence	Morrisville, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,584 contacts →
	Partial evidence “Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…” Source: RevenueBase Database · checked Sep 16, 2026
8	Eisai US	Indirect evidence	Nutley, NJ, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,570 contacts →
	Indirect evidence “At Eisai Inc, human health care (hhc) is our goal.” Source: RevenueBase Database · checked Sep 16, 2026
9	Celgene	Indirect evidence	Summit, NJ, United StatesHQ checked Sep 16, 2026	5,001-10,000	2,098 contacts →
	Indirect evidence “We have merged with Bristol Myers Squibb creating a leading biopharma company, ideally positioned to discover, develop and deliver innovative medicines for patients fighting…” Source: RevenueBase Database · checked Sep 16, 2026
10	Precision For Medicine	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,781 contacts →
	Partial evidence “Precision for Medicine is an industry-leading global clinical research services organization, purpose-built to improve the clinical research and development process for new…” Source: RevenueBase Database · checked Sep 16, 2026
11	EMD Serono, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 16, 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 16, 2026
12	Insmed Incorporated	Partial evidence	Bridgewater Township, NJ, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,512 contacts →
	Partial evidence “Insmed is a people-rst global biopharmaceutical company striving to deliver rst- and best-in-class therapies to transform the lives of patients facing serious diseases.” Source: RevenueBase Database · checked Sep 16, 2026
13	CTI Clinical Trial And Consulting Services	Partial evidence	Covington, KY, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,043 contacts →
	Partial evidence “CTI Clinical Trial and Consulting Services is a global, privately held, research service organization, delivering a complete spectrum of clinical trial and consulting services…” Source: RevenueBase Database · checked Sep 16, 2026
14	Sarah Cannon Research Institute	Partial evidence	Nashville, TN, United StatesHQ checked Sep 16, 2026	501-1,000	868 contacts →
	Partial evidence “Sarah Cannon Research Institute (SCRI) is one of the world’s leading oncology research organizations, conducting community-based clinical trials.” Source: RevenueBase Database · checked Sep 16, 2026
15	Caidya	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	758 contacts →
	Partial evidence “Caidya is a multi-therapeutic clinical research organization (CRO) serving innovators worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
16	Arrowhead Pharmaceuticals	Strong evidence	Pasadena, CA, United StatesHQ checked Sep 16, 2026	501-1,000	657 contacts →
	Strong evidence “Arrowhead Pharmaceuticals is a clinical stage, Nasdaq listed (ticker ARWR) company developing medicines that treat intractable diseases by silencing the genes that cause them.” Source: RevenueBase Database · checked Sep 16, 2026
17	Arcus Biosciences	Strong evidence	Hayward, CA, United StatesHQ checked Sep 16, 2026	501-1,000	632 contacts →
	Strong 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 16, 2026
18	Vanda Pharmaceuticals	Partial evidence	Washington, DC, United StatesHQ checked Sep 16, 2026	201-500	575 contacts →
	Partial evidence “Vanda is a leading global biopharmaceutical company focused on the development and commercialization of innovative therapies to address high unmet medical needs and improve the…” Source: RevenueBase Database · checked Sep 16, 2026
19	Takeda Pharmaceuticals America, INC	Indirect evidence	Lincolnshire, IL, United StatesHQ checked Sep 16, 2026	10001+	561 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
20	Pharm-Olam, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	501-1,000	561 contacts →
	Indirect evidence “Pharm-Olam is now Allucent.” Source: RevenueBase Database · checked Sep 16, 2026
21	Amag Pharmaceuticals	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 16, 2026	201-500	548 contacts →
	Indirect evidence “At AMAG, aiming higher is in our DNA.” Source: RevenueBase Database · checked Sep 16, 2026
22	Open Health	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	531 contacts →
	Indirect evidence “At OPEN Health, we connect visionary minds, pioneering science, and advanced technology to drive real impact.” Source: RevenueBase Database · checked Sep 16, 2026
23	Ardelyx, INC	Strong evidence	Waltham, MA, United StatesHQ checked Sep 16, 2026	201-500	497 contacts →
	Strong evidence “Ardelyx is a commercial-stage biopharmaceutical company focused on the development and commercialization of innovative medicines that meet significant unmet medical needs.” Source: RevenueBase Database · checked Sep 16, 2026
24	Xeris Pharmaceuticals, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	201-500	481 contacts →
	Partial evidence “We're a growth-oriented biopharmaceutical company improving patient lives by developing and commercializing advanced products across a range of therapies.” Source: RevenueBase Database · checked Sep 16, 2026
25	Eikon Therapeutics	Strong evidence	Millbrae, CA, United StatesHQ checked Sep 16, 2026	201-500	423 contacts →
	Strong evidence “Eikon Therapeutics is a late-stage clinical biopharmaceutical company advancing a pipeline of potential therapies for patients with unmet medical needs.” 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: clinical-stage biopharmaceutical 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 clinical-stage biopharmaceutical companies.
Partial evidence: Its own public description names part of clinical-stage biopharmaceutical companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clinical-stage biopharmaceutical 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 931 clinical-stage biopharmaceutical companies based in the United States

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Clinical-stage biopharmaceutical companies based in the United States at a glance

As of Sep 16, 2026

39.0%Verified-email coverage

240.5Average contacts per company

11-50Median size (employees)

4.2%Largest-city concentration · New York

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

396

11-50

347

51-200

118

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 931 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 clinical-stage biopharmaceutical 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 “clinical-stage biopharmaceutical 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 clinical-stage biopharmaceutical 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 clinical-stage biopharmaceutical 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, 87,257 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.

Clinical-stage biopharmaceutical 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 clinical-stage biopharmaceutical 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 clinical-stage biopharmaceutical companies are there based in the United States?

RevenueBase identified 931 clinical-stage biopharmaceutical 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?

Pfizer, headquartered in New York, tops this list with the largest team on record.

Which city has the most clinical-stage biopharmaceutical companies?

New York leads with 39 headquartered companies, followed by San Diego (39) and Boston (37).

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 87,257 verified decision-maker contacts tracked across these 931 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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Clinical-stage biopharmaceutical companies by geography

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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.