Company lists · Data verified August 2026

Top 25 Biotech private equity companies based in Boston, United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 58 companies tracked

There are 58 biotech private equity companies headquartered in Boston, United States (RevenueBase, August 2026). RevenueBase tracks 1,130 professional contacts across them, including 533 with verified work emails and 486 with mobile numbers. New York is the largest hub.

This list covers biotech private equity 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. Data current as of August 28, 2026.

58Companies

1,130Contacts tracked

533Verified emails

486Mobile numbers

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The 25 largest biotech private equity companies based in Boston, United States

Ranked by team size

Top 25 of 58 biotech private equity companies based in Boston, United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	RA Capital Management	Boston, MA	201-500	242	165
2	Third Rock Ventures	Boston, MA	51-200	110	69
3	Optum Ventures	Boston	11-50	60	29
4	5am Ventures	Boston, MA	11-50	47	23
5	Ampersand Capital Partners	Boston, MA	11-50	47	6
6	Altimeter	Boston, MA	11-50	42	26
7	Pillar VC	Boston, MA	11-50	40	15
8	SV Investment	Boston, MA	11-50	40	10
9	Longitude Capital	Boston, MA	11-50	33	18
10	TWO Bear Capital	Boston, MA	11-50	30	22
11	Angelini Ventures	Boston	11-50	30	19
12	Riverside Partners	Boston, MA	11-50	29	11
13	Abingworth	Boston, MA	11-50	28	19
14	Transformation Capital	Boston, MA	11-50	27	19
15	Catalyst Health Ventures	Boston, MA	1-10	23	4
16	Trustbridge Partners	Boston, MA	51-200	19	6
17	Longwood Fund	Boston, MA	1-10	15	12
18	Cure Ventures	Boston, MA	1-10	14	11
19	Cormorant Asset Management, LP	Boston, MA	11-50	14	4
20	Excel Venture Management, LLC	Boston, MA	1-10	12	6
21	Delos Capital	Boston	11-50	11	10
22	Xontogeny	Boston, MA	1-10	9	7
23	Bioventures Investors	Boston, MA	1-10	7	6
24	Newpath Partners	Boston, MA	1-10	6	5
25	Medscience Ventures, LLC	Boston, MA	11-50	5	3

Showing 25 of 58 biotech private equity companies based in Boston, United States

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Biotech private equity companies based in Boston, United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 91 HQs

486Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

5,001-10,000

Biotech private equity companies by metro in the United States

Metro	Companies
Biotech private equity companies in New York	91
Biotech private equity companies in Boston	58
Biotech private equity companies in San Francisco	35
Biotech private equity companies in Cambridge	29
Biotech private equity companies in Chicago	23
Biotech private equity companies in Menlo Park	14
Biotech private equity companies in Palo Alto	14

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “biotech private equity companies”, with match quality audited by blind human judging, and headquartered in Boston, United States.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many biotech private equity companies are there based in Boston, United States?

There are 58 biotech private equity companies headquartered in Boston, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

RA Capital Management, headquartered in Boston, tops this list with the largest team on record.

Which city has the most biotech private equity companies?

New York leads with 91 headquartered companies, followed by Boston (58) and San Francisco (35).

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 533 verified decision-maker contacts tracked across these 58 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.