Company lists · Data refreshed September 2026

Top 25 Rare disease pharmaceutical companies worldwide

Name: Rare disease pharmaceutical companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 687 companies tracked

RevenueBase identified 687 rare disease pharmaceutical companies worldwide as of September 2026 and tracks 226,247 professional contacts across them, including 93,450 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers rare disease pharmaceutical companies worldwide, 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 17, 2026. Country and city lists for rare disease pharmaceutical companies follow the table.

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 17, 2026 86% judged on-target in blind review

687Companies

226,247Contacts tracked

93,450Verified emails

0Mobile numbers

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The 25 largest rare disease pharmaceutical companies worldwide

Ranked by team size

Top 25 of 687 rare disease pharmaceutical companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to rare disease pharmaceutical 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	Bristol Myers Squibb	Indirect evidence	Lawrence Township, NJ, United StatesHQ checked Sep 17, 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 17, 2026
2	Takeda	Indirect evidence	Tokyo, IL, JapanHQ checked Sep 17, 2026	10001+	29,414 contacts →
	Indirect evidence “We all want a healthier future.” Source: RevenueBase Database · checked Sep 17, 2026
3	Johnson & Johnson Innovative Medicine	Indirect evidence	Titusville, NJ, United StatesHQ checked Sep 17, 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 17, 2026
4	Genentech	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 17, 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 17, 2026
5	Regeneron	Indirect evidence	Tarrytown, NY, United StatesHQ checked Sep 17, 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 17, 2026
6	Servier	Partial evidence	Suresnes, FranceHQ checked Sep 17, 2026	10001+	10,958 contacts →
	Partial evidence “Servier is an independent international pharmaceutical group governed by a foundation.” Source: RevenueBase Database · checked Sep 17, 2026
7	Biogen	Indirect evidence	Cambridge, MA, United StatesHQ checked Sep 17, 2026	5,001-10,000	10,389 contacts →
	Indirect 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 17, 2026
8	Vertex Pharmaceuticals	Partial evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	5,001-10,000	8,099 contacts →
	Partial evidence “Vertex is a global biotechnology company that invests in scientific innovation to create transformative medicines for people with serious diseases and has made significant…” Source: RevenueBase Database · checked Sep 17, 2026
9	Alexion Pharmaceuticals, INC	Strong evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	6,136 contacts →
	Strong evidence “Alexion, AstraZeneca Rare Disease is focused on pioneering new possibilities for the rare disease community.” Source: RevenueBase Database · checked Sep 17, 2026
10	IPSEN	Strong evidence	Paris, FranceHQ checked Sep 17, 2026	5,001-10,000	5,943 contacts →
	Strong evidence “We are a global biopharmaceutical company with a focus on bringing transformative medicines to patients in three therapeutic areas: Oncology, Rare Disease and Neuroscience.” Source: RevenueBase Database · checked Sep 17, 2026
11	Biomarin Pharmaceutical INC	Indirect evidence	San Rafael, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	3,943 contacts →
	Indirect evidence “Founded in 1997, BioMarin is a global biotechnology company dedicated to transforming lives through genetic discovery.” Source: RevenueBase Database · checked Sep 17, 2026
12	Eisai US	Indirect evidence	Nutley, NJ, United StatesHQ checked Sep 17, 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 17, 2026
13	Hetero Healthcare Limited	Partial evidence	Hyderabad, IndiaHQ checked Sep 17, 2026	1,001-5,000	1,601 contacts →
	Partial evidence “Hetero Healthcare Ltd is a leading Innovative Pharmaceutical Company in India, headquartered at Hyderabad.” Source: RevenueBase Database · checked Sep 17, 2026
14	EMD Serono, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 17, 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 17, 2026
15	Syneos Health Clinical Solutions	Indirect evidence	Morrisville, NC, United StatesHQ checked Sep 17, 2026	10001+	1,569 contacts →
	Indirect evidence “Syneos Health® is a leading fully integrated biopharmaceutical solutions organization built to accelerate customer success.” Source: RevenueBase Database · checked Sep 17, 2026
16	Ultragenyx	Indirect evidence	Novato, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,556 contacts →
	Indirect evidence “Leading with purpose.” Source: RevenueBase Database · checked Sep 17, 2026
17	Insmed Incorporated	Partial evidence	Bridgewater Township, NJ, United StatesHQ checked Sep 17, 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 17, 2026
18	PTC Therapeutics, INC	Strong evidence	Warren, NJ, United StatesHQ checked Sep 17, 2026	501-1,000	1,212 contacts →
	Strong evidence “PTC is a patient-centered biopharmaceutical company focused on discovering, developing & commercializing medicine for children and adults living with rare and serious disease.” Source: RevenueBase Database · checked Sep 17, 2026
19	Neutec İlac	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 17, 2026	5,001-10,000	1,054 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
20	Pharming Group	Strong evidence	Leiden, NetherlandsHQ checked Sep 17, 2026	201-500	976 contacts →
	Strong evidence “Pharming Group is a global biopharmaceutical company dedicated to transforming the lives of patients with rare, debilitating, and life-threatening diseases.” Source: RevenueBase Database · checked Sep 17, 2026
21	Purdue Pharma L.P	Indirect evidence	Stamford, CT, United StatesHQ checked Sep 17, 2026	501-1,000	885 contacts →
	Indirect evidence “Purdue and its subsidiaries develop, manufacture and market medications to meet the evolving needs of healthcare professionals, patients, and caregivers.” Source: RevenueBase Database · checked Sep 17, 2026
22	Bridgebio	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 17, 2026	501-1,000	837 contacts →
	Indirect evidence “We exist to bring transformative medicines to people living with genetic conditions.” Source: RevenueBase Database · checked Sep 17, 2026
23	Apellis Pharmaceuticals	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 17, 2026	501-1,000	823 contacts →
	Indirect evidence “Apellis is now part of Biogen.” Source: RevenueBase Database · checked Sep 17, 2026
24	Azurity Pharmaceuticals	Partial evidence	Woburn, MA, United StatesHQ checked Sep 17, 2026	501-1,000	790 contacts →
	Partial evidence “Azurity Pharmaceuticals is a privately held global pharmaceutical company dedicated to redefining medicine for the real world.” Source: RevenueBase Database · checked Sep 17, 2026
25	Kyowa Kirin, Inc.- U.S	Partial evidence	Princeton, NJ, United StatesHQ checked Sep 17, 2026	501-1,000	727 contacts →
	Partial evidence “Kyowa Kirin is a global specialty pharmaceutical company that applies state-of-the-art biotechnologies to discover and deliver novel medicines.” Source: RevenueBase Database · checked Sep 17, 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: rare disease pharmaceutical 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 rare disease pharmaceutical companies.
Partial evidence: Its own public description names part of rare disease pharmaceutical companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name rare disease pharmaceutical 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 687 rare disease pharmaceutical companies worldwide

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Rare disease pharmaceutical companies worldwide at a glance

As of Sep 17, 2026

41.3%Verified-email coverage

329.3Average contacts per company

11-50Median size (employees)

3.9%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

232

11-50

210

51-200

127

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 rare disease pharmaceutical 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.
Coverage: 8 countries, largest first: the United States, India, the United Kingdom, France, Switzerland, the Netherlands, Canada, Türkiye. Country and city lists for rare disease pharmaceutical companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “rare disease pharmaceutical 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 rare disease pharmaceutical 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 rare disease pharmaceutical companies, and records with no verified work email.
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, 93,450 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 17, 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.

Rare disease pharmaceutical companies by location

8 lists · largest first

Every Rare disease pharmaceutical companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 rare disease pharmaceutical 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 rare disease pharmaceutical companies are there worldwide?

RevenueBase identified 687 rare disease pharmaceutical companies worldwide 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?

Bristol Myers Squibb, headquartered in Lawrence Township, tops this list with the largest team on record.

Which country has the most rare disease pharmaceutical companies?

The United States leads with 362 companies, followed by India (99) and the United Kingdom (73). Every rare disease pharmaceutical companies list by country and city is linked on this page.

Which city has the most rare disease pharmaceutical companies?

London leads with 27 headquartered companies, followed by New York (20) and Boston (17).

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 93,450 verified decision-maker contacts tracked across these 687 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 17, 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.