Company lists · Data refreshed October 2026

Top 25 Biopharmaceutical development companies based in Waltham, United States

Name: Biopharmaceutical development companies based in Waltham, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 8, 2026 35 companies tracked

RevenueBase identified 35 company matches for biopharmaceutical development companies associated with Waltham, United States as of October 2026 and tracks 9,708 professional contacts across them, including 4,170 with verified work emails. Across the United States, San Diego is the largest hub for this category (200 companies); Waltham has 35.

This list covers company matches for biopharmaceutical development companies associated with Waltham, 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 October 8, 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 Oct 8, 2026 How this list was built

35Companies

9,708Contacts tracked

4,170Verified emails

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The 25 largest biopharmaceutical development companies based in Waltham, United States

Ranked by team size

Top 25 of 35 company matches for biopharmaceutical development companies based in Waltham, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 8, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Patheon	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	10001+	2,041 contacts →
	Exact match “Thermo Fisher Scientific provides industry-leading pharma services for drug development, clinical trial logistics, and commercial manufacturing through our Patheon™ brand.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
2	Arisglobal	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	1,001-5,000	1,950 contacts →
	Exact match “ArisGlobal is an AI-first technology company at the forefront of life sciences and the creator of LifeSphere®, the platform trusted by hundreds of life sciences organizations…” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
3	Repligen Corporation	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	1,001-5,000	1,359 contacts →
	Exact match “Repligen, a global, bioprocessing-focused life sciences company, provides innovative solutions for the advancement of biotherapeutic manufacturing.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
4	Apellis Pharmaceuticals	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	501-1,000	614 contacts →
	Exact match “Apellis is now part of Biogen.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
5	Amag Pharmaceuticals	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	201-500	556 contacts →
	Exact match “At AMAG, aiming higher is in our DNA.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
6	Ardelyx, INC	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	201-500	535 contacts →
	Exact match “Ardelyx is a commercial-stage biopharmaceutical company focused on the development and commercialization of innovative medicines that meet significant unmet medical needs.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
7	Elevatebio	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	201-500	428 contacts →
	Exact match “ElevateBio is a technology-driven advanced therapy contract development and manufacturing organization (CDMO) powering the creation of life-transforming therapies.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
8	Viridian Therapeutics, INC	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	201-500	388 contacts →
	Exact match “Viridian is a biopharmaceutical company focused on engineering and developing potential best-in-class medicines for patients with serious and rare diseases.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
9	SOBI	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	201-500	335 contacts →
	Exact match “Sobi is an international specialty healthcare company dedicated to developing treatments and extensive patient support networks for people with rare and difficult to treat…” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
10	Ventus Therapeutics	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	11-50	84 contacts →
	Exact match “At Ventus, we are pioneering a unique approach to structure-based drug discovery to address biologically validated, but difficult-to-drug targets.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
11	LLX Solutions LLC	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	51-200	80 contacts →
	Exact match “LLX Solutions is now a part of Quantive Intelligence (QI), a Decision Sciences platform providing specialized biometrics expertise across biostatistics, statistical programming…” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
12	Dragonfly Therapeutics, INC	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	51-200	68 contacts →
	Exact match “Dragonfly Therapeutics is a clinical-stage biopharmaceutical company committed to discovering, developing and commercializing therapies that use its novel multispecific antibody…” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
13	Upstream BIO	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	51-200	67 contacts →
	Exact match “We are advancing verekitug, a clinical-stage monoclonal antibody targeting an upstream driver of inflammatory response.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
14	Crescent Biopharma	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	51-200	63 contacts →
	Exact match “Crescent Biopharma’s vision is to build a world leading oncology company bringing the next wave of therapies for cancer patients.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
15	Orionis Biosciences	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	11-50	55 contacts →
	Exact match “Orionis Biosciences is a life sciences company pioneering technological innovation in genome-scale drug discovery and tunable molecular design of novel therapeutic drug modalities.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
16	Sironax	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	51-200	43 contacts →
	Exact match “Sironax is a clinical-stage biotechnology company developing transformative therapies for neurodegenerative, inflammatory, immunologic, and metabolic diseases.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
17	Paragon Therapeutics, INC	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	11-50	33 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
18	Bonito Biosciences	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	11-50	25 contacts →
	Exact match “Bonito is building the data foundation for programmable oligotherapeutic delivery to any cell or tissue type.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
19	Dynamicure Biotechnology	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	11-50	25 contacts →
	Exact match “Driven by science and passionate about advancing patient care, DynamiCure is translating breakthrough insights on immuno-normalization into a pipeline of innovative antibody…” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
20	General Biological	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	11-50	24 contacts →
	Exact match “Hiring great engineers, biotechnologists, chemists, and more.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
21	Biomodels	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	11-50	23 contacts →
	Exact match “BioModels is an accredited preclinical contract research organization that develops and executes predictive and highly translational efficacy studies for biotechnology and…” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
22	Conjugate Group	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	51-200	23 contacts →
	Exact match “The Conjugate Group provides flexible drug development and manufacturing services and resources to the pharmaceutical and medical device industries.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
23	Checkpoint Therapeutics INC	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	11-50	16 contacts →
	Exact match “Checkpoint Therapeutics is revolutionizing the way novel treatments for cancer patients are developed.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
24	Accellient Partners, LLC	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	1-10	3 contacts →
	Exact match “Accellient Partners is a fully integrated and dedicated team of drug development experts with broad drug development, regulatory and scientific experience.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
25	Blossom Innovations	Exact match	Waltham, MA, United StatesHQ recorded Oct 8, 2026	11-50	3 contacts →
	Exact match “Blossom Innovations is a privately-owned company dedicated to originating and developing new breakthrough therapies.” Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “biopharmaceutical development companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 35 biopharmaceutical development companies based in Waltham, United States

See the full list, filter by size, metro and specialty, and access 4,170 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Biopharmaceutical development companies based in Waltham, United States at a glance

As of Oct 8, 2026

43.0%Verified-email coverage

277.4Average contacts per company

51-200Median size (employees)

Oct 8, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Waltham, so it is reported there. Company counts and contact totals on this page are exact for Waltham, over 35 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 Waltham, United States whose business descriptions match “biopharmaceutical development companies” 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 4,170 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 October 8, 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.

Biopharmaceutical development companies by metro in the United States

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 “biopharmaceutical development companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many biopharmaceutical development companies are there based in Waltham, United States?

RevenueBase identified 35 company matches for biopharmaceutical development companies associated with Waltham, United States as of October 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?

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

Which city in the United States has the most biopharmaceutical development companies?

San Diego leads the United States with 200 company records, followed by Boston (137) and Cambridge (117). Waltham has 35.

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 4,170 professional contacts with verified work emails tracked across these 35 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 October 8, 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.