Company lists · Data refreshed September 2026

Top 25 Biotherapeutics companies based in Boston, United States

Name: Biotherapeutics companies based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 7, 2026 111 companies tracked

RevenueBase identified 111 biotherapeutics companies headquartered in Boston, United States as of September 2026 and tracks 13,577 professional contacts across them, including 6,707 with verified work emails. San Diego is the largest hub.

This list covers biotherapeutics companies headquartered in Boston, 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 7, 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 7, 2026 86% judged on-target in blind review

111Companies

13,577Contacts tracked

6,707Verified emails

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The 25 largest biotherapeutics companies based in Boston, United States

Ranked by team size

Top 25 of 111 biotherapeutics companies based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 7, 2026. RevenueBase Smart Search rates how each company's information relates to biotherapeutics 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	Alexion Pharmaceuticals, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	1,001-5,000	6,136 contacts →
	“Alexion, AstraZeneca Rare Disease is focused on pioneering new possibilities for the rare disease community.” Source: company website · checked Sep 7, 2026
2	Argenx	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	1,001-5,000	1,952 contacts →
	“argenx is a global immunology company committed to improving the lives of people living with severe autoimmune diseases.” Source: company website · checked Sep 7, 2026
3	EMD Serono, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	1,001-5,000	1,578 contacts →
	“We aspire to create, improve and prolong life for people living with difficult-to-treat conditions like infertility, multiple sclerosis and cancer.” Source: company website · checked Sep 7, 2026
4	Inventiv Health Commercial	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	10001+	553 contacts →
	“INC Research/inVentiv Health (Nasdaq:INCR) is the only fully integrated biopharmaceutical solutions organization.” Source: company website · checked Sep 7, 2026
5	Aveo Oncology	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	213 contacts →
	“AVEO is a commercial-stage, oncology-focused biopharmaceutical company committed to delivering medicines that provide a better life for patients with cancer.” Source: company website · checked Sep 7, 2026
6	Solid Biosciences	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	160 contacts →
	“Solid Biosciences is a precision genetic medicine company focused on advancing a portfolio of gene therapy candidates targeting rare neuromuscular and cardiac diseases, including…” Source: company website · checked Sep 7, 2026
7	Alloy Therapeutics, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	141 contacts →
	“Alloy Therapeutics is a Product Development Organization dedicated to helping the global scientific community make better medicines together.” Source: company website · checked Sep 7, 2026
8	Astria Therapeutics, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	n/a	113 contacts →
	Source: company website · checked Sep 7, 2026
9	Engene	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	11-50	100 contacts →
	“enGene (Nasdaq: ENGN) is a clinical-stage biotechnology company mainstreaming non-viral genetic medicines that can be delivered locally to the site of disease-starting with…” Source: company website · checked Sep 7, 2026
10	Bicara Therapeutics	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	99 contacts →
	“Bicara is a clinical-stage biopharmaceutical company committed to bringing transformative bifunctional therapies to patients with solid tumors.” Source: company website · checked Sep 7, 2026
11	X4 Pharmaceuticals	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	97 contacts →
	“We are a fully integrated, commercial-stage biopharmaceutical company driving progress for people living with rare immune disorders.” Source: company website · checked Sep 7, 2026
12	MPM Bioimpact	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	11-50	95 contacts →
	“MPM BioImpact is a world-leading biotechnology investment firm with nearly three decades of experience creating and investing in companies that seek to translate scientific…” Source: company website · checked Sep 7, 2026
13	Jnana Therapeutics	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	91 contacts →
	“Jnana Therapeutics is a clinical-stage biotechnology company leveraging its next-generation chemoproteomics RAPID platform to discover medicines for highly validated…” Source: company website · checked Sep 7, 2026
14	Puretech Health	Strong evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	75 contacts →
	“PureTech Health is a hub-and-spoke biotherapeutics company dedicated to giving life to science and transforming innovation into value.” Source: company website · checked Sep 7, 2026
15	Elektrofi	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	71 contacts →
	“Elektrofi is a biopharmaceutical formulation technology company that is revolutionizing the delivery of biologic therapies by giving patients the ability to control how they want…” Source: company website · checked Sep 7, 2026
16	Pyxis Oncology	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	67 contacts →
	“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…” Source: company website · checked Sep 7, 2026
17	Hotspot Therapeutics, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	56 contacts →
	“Inspired by nature’s ability to regulate protein function to restore health, HotSpot Therapeutics is discovering new allosteric therapies with the ability to treat disease in new…” Source: company website · checked Sep 7, 2026
18	Compass Therapeutics INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	11-50	51 contacts →
	“Compass Therapeutics, Inc.” Source: company website · checked Sep 7, 2026
19	Superluminal Medicines INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	11-50	44 contacts →
	“Superluminal Medicines is a Boston-based generative biology and chemistry company developing a differentiated pipeline and revolutionizing the speed and accuracy of how medicine…” Source: company website · checked Sep 7, 2026
20	Mediar Therapeutics	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	11-50	42 contacts →
	“Mediar Therapeutics is pioneering a new approach to fibrosis treatment that aims to halt the disease at a different source – the myofibroblast, the key pathogenic cell in fibrosis…” Source: company website · checked Sep 7, 2026
21	AI Proteins	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	11-50	39 contacts →
	“Boston-based AI Proteins is a biotech company on a mission to re-imagine protein therapeutics with a novel approach for designing entirely new proteins.” Source: company website · checked Sep 7, 2026
22	LG Chem Life Sciences Usa, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	51-200	39 contacts →
	“At LG Chem Life Sciences USA, we aim to transform lives by inspiring science and leading innovation in the key therapeutic areas of Immunology, Oncology, and Metabolic diseases.” Source: company website · checked Sep 7, 2026
23	Launch Therapeutics	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	11-50	35 contacts →
	“Launch Tx provides biotech and biopharma companies with solutions that speed drug candidates’ path to market and connection with investors that provide development funding.” Source: company website · checked Sep 7, 2026
24	TEN Bridge Communications	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	11-50	32 contacts →
	“We work with biotech innovators at all stages of growth and development, whether they are launching anew or advancing a potentially transformative medicine through regulatory…” Source: company website · checked Sep 7, 2026
25	Medzown	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	11-50	29 contacts →
	“Medzown is precision medicine management at scale.” Source: company website · checked Sep 7, 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: biotherapeutics 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 biotherapeutics companies.
Partial evidence: Its own public description names part of biotherapeutics companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biotherapeutics 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 111 biotherapeutics companies based in Boston, United States

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Biotherapeutics companies based in Boston, United States at a glance

As of Sep 7, 2026

49.4%Verified-email coverage

122.3Average contacts per company

11-50Median size (employees)

159.5%Largest-city concentration · San Diego

Sep 7, 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 this city, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 111 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 biotherapeutics 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 Boston, United States whose own description of what they do matches “biotherapeutics 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 biotherapeutics 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 biotherapeutics companies, and records with no verified work email. Companies headquartered outside Boston 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, 6,707 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 7, 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.

Biotherapeutics companies by metro in the United States

Biotherapeutics companies in San Diego177
Biotherapeutics companies in Cambridge154
Biotherapeutics companies in Boston111
Biotherapeutics companies in New York83
Biotherapeutics companies in San Francisco61
Biotherapeutics companies in South San Francisco55
Biotherapeutics companies in Seattle47
Biotherapeutics companies in Houston46
Biotherapeutics companies in Waltham40
Biotherapeutics companies in Durham35
Biotherapeutics companies in Philadelphia35
Biotherapeutics companies in Chicago34
Biotherapeutics companies in Los Angeles30
Biotherapeutics companies in Rockville30

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 biotherapeutics 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 biotherapeutics companies are there based in Boston, United States?

RevenueBase identified 111 biotherapeutics companies headquartered in Boston, 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?

Alexion Pharmaceuticals, INC, headquartered in Boston, tops this list with the largest team on record.

Which city has the most biotherapeutics companies?

San Diego leads with 177 headquartered companies, followed by Cambridge (154) and Boston (111).

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 6,707 verified decision-maker contacts tracked across these 111 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 7, 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.