Company lists · Data refreshed September 2026

Top 25 Biotechnology companies based in the United States

RevenueBase identified 2,954 biotechnology companies headquartered in the United States as of September 2026 and tracks 311,057 professional contacts across them, including 131,940 with verified work emails and 105,330 with mobile numbers. San Diego is the largest hub.

This list covers biotechnology 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 6, 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 6, 2026 86% judged on-target in blind review
2,954Companies
311,057Contacts tracked
131,940Verified emails
105,330Mobile numbers
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The 25 largest biotechnology companies based in the United States

Ranked by team size
Top 25 of 2,954 biotechnology companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to biotechnology 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceWaltham, MA, United StatesHQ checked Sep 6, 202610001+70,907 contacts →

“About Thermo Fisher Scientific Thermo Fisher Scientific Inc.”

Source: company website · checked Sep 6, 2026
2Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 6, 202610001+49,409 contacts →

“We're a medicine company turning science into healing to make life better for people around the world.”

Source: company website · checked Sep 6, 2026
3Indirect evidenceThousand Oaks, CA, United StatesHQ checked Sep 6, 202610001+33,433 contacts →

“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: company website · checked Sep 6, 2026
4Indirect evidenceSouth San Francisco, CA, United StatesHQ checked Sep 6, 202610001+17,217 contacts →

“About Genentech We're passionate about finding solutions for people facing the world's most difficult-to-treat conditions.”

Source: company website · checked Sep 6, 2026
5Strong evidenceCambridge, MA, United StatesHQ checked Sep 6, 20265,001-10,00010,389 contacts →

“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: company website · checked Sep 6, 2026
6Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 6, 20265,001-10,0008,987 contacts →

“At Illumina, our goal is to apply innovative technologies and revolutionary assays to the analysis of genetic variation and function, making studies possible that were not even…”

Source: company website · checked Sep 6, 2026
7Indirect evidenceMilford, MA, United StatesHQ checked Sep 6, 202610001+8,189 contacts →

“Waters Corporation (NYSE: WAT) is a global leader in life sciences and diagnostics, dedicated to accelerating the benefits of pioneering science through analytical technologies…”

Source: company website · checked Sep 6, 2026
8Indirect evidenceWashington, DC, United StatesHQ checked Sep 6, 202610001+2,941 contacts →
Source: company website · checked Sep 6, 2026
9Indirect evidenceWaltham, MA, United StatesHQ checked Sep 6, 202610001+2,938 contacts →

“At Revvity, “impossible” is inspiration, and ""can't be done"" is a call to action.”

Source: company website · checked Sep 6, 2026
10Indirect evidenceSalt Lake City, UT, United StatesHQ checked Sep 6, 20261,001-5,0002,718 contacts →

“Myriad Genetics is a leading molecular diagnostic testing and precision medicine company dedicated to advancing health and well-being for all.”

Source: company website · checked Sep 6, 2026
11Strong evidenceSomerset, NJ, United StatesHQ checked Sep 6, 20261,001-5,0002,154 contacts →

“Legend Biotech is a global, commercial-stage biotechnology company developing and manufacturing novel therapies.”

Source: company website · checked Sep 6, 2026
12Indirect evidenceSummit, NJ, United StatesHQ checked Sep 6, 20265,001-10,0002,098 contacts →

“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: company website · checked Sep 6, 2026
13Indirect evidenceMinneapolis, MN, United StatesHQ checked Sep 6, 20261,001-5,0001,976 contacts →

“Bio-Techne is a global life sciences company that empowers scientific discovery and advances human health.”

Source: company website · checked Sep 6, 2026
14Indirect evidenceMadison, WI, United StatesHQ checked Sep 6, 20261,001-5,0001,727 contacts →

“At Promega Corporation, creativity and connection drive discovery and innovation.”

Source: company website · checked Sep 6, 2026
15Indirect evidenceDurham, NC, United StatesHQ checked Sep 6, 20261,001-5,0001,645 contacts →

“KBI Biopharma is an award-winning biopharmaceutical contract services organization providing fully-integrated, accelerated drug development and biomanufacturing services to…”

Source: company website · checked Sep 6, 2026
16Indirect evidenceIrving, TX, United StatesHQ checked Sep 6, 20261,001-5,0001,556 contacts →

“Caris Life Sciences® (Caris) is the leading next-generation TechBio company and precision medicine pioneer that is actively developing and delivering innovative solutions to…”

Source: company website · checked Sep 6, 2026
17Indirect evidenceSioux Falls, SD, United StatesHQ checked Sep 6, 20261,001-5,0001,536 contacts →

“POET’s vision is to create a world in sync with nature.”

Source: company website · checked Sep 6, 2026
18Strong evidenceSilver Spring, MD, United StatesHQ checked Sep 6, 20261,001-5,0001,361 contacts →

“Founded to find a cure for a daughter’s rare disease, United Therapeutics is a biotechnology company transforming care for people with chronic and life-threatening conditions.”

Source: company website · checked Sep 6, 2026
19Indirect evidenceWaltham, MA, United StatesHQ checked Sep 6, 20261,001-5,0001,254 contacts →

“Repligen, a global, bioprocessing-focused life sciences company, provides innovative solutions for the advancement of biotherapeutic manufacturing.”

Source: company website · checked Sep 6, 2026
20Indirect evidenceRadnor, PA, United StatesHQ checked Sep 6, 20261,001-5,0001,237 contacts →

“Certara accelerates medicines using proprietary biosimulation software, technology and services to transform traditional drug discovery and development.”

Source: company website · checked Sep 6, 2026
21Indirect evidenceSouth San Francisco, CA, United StatesHQ checked Sep 6, 2026501-1,0001,230 contacts →

“Twist Bioscience is a synthetic biology company based in South San Francisco, California.”

Source: company website · checked Sep 6, 2026
22Indirect evidencePiscataway, NJ, United StatesHQ checked Sep 6, 20265,001-10,0001,194 contacts →

“GenScript Life Science Group is a part of GenScript Biotech Corporation.”

Source: company website · checked Sep 6, 2026
23Indirect evidenceWaltham, MA, United StatesHQ checked Sep 6, 20261,001-5,0001,107 contacts →

“Nova Biomedical is entering a new chapter.”

Source: company website · checked Sep 6, 2026
24Indirect evidenceRockville, MD, United StatesHQ checked Sep 6, 20261,001-5,000954 contacts →

“Founded in 1995, Meso Scale Discovery (MSD) is a global leader in the development, manufacture, and commercialization of innovative assays and instruments for the measurement of…”

Source: company website · checked Sep 6, 2026
25Indirect evidenceGaithersburg, MD, United StatesHQ checked Sep 6, 20261,001-5,000886 contacts →

“MedImmune is the global biologics research and development arm of AstraZeneca, a global, innovation-driven biopharmaceutical business that focuses on the discovery, development…”

Source: company website · checked Sep 6, 2026

Showing 25 of 2,954 biotechnology companies based in the United States

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Biotechnology companies based in the United States at a glance

As of Sep 6, 2026
42.4%Verified-email coverage
33.9%Mobile-number coverage
105.3Average contacts per company
11-50Median size (employees)
6.0%Largest-city concentration · San Diego
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
1,387
11-50
980
51-200
367
201-500
108
501-1,000
47
1,001-5,000
44
5,001-10,000
4
10001+
13

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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, 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 “biotechnology 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 biotechnology 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 biotechnology 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, 131,940 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 6, 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.

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, 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 are there based in the United States?

RevenueBase identified 2,954 biotechnology 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?

Thermo Fisher Scientific, headquartered in Waltham, tops this list with the largest team on record.

Which city has the most biotechnology companies?

San Diego leads with 176 headquartered companies, followed by Boston (107) and Cambridge (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 131,940 verified decision-maker contacts tracked across these 2,954 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 6, 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.