Company lists · Data refreshed September 2026

Top 25 Sustainable venture capital firms based in Boston, United States

Name: Sustainable venture capital firms based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 41 companies tracked

RevenueBase identified 41 sustainable venture capital firms headquartered in Boston, United States as of September 2026 and tracks 746 professional contacts across them, including 329 with verified work emails. Across the United States, New York is the largest hub for this category (170 companies); Boston has 41.

This list covers sustainable venture capital firms 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 14, 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 14, 2026 86% judged on-target in blind review

41Companies

746Contacts tracked

329Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest sustainable venture capital firms based in Boston, United States

Ranked by team size

Top 25 of 41 sustainable venture capital firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable venture capital firms: 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	RA Capital Management	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	201-500	251 contacts →
	Partial evidence “Founded in 2004, RA Capital Management is an active, multi-stage investment manager dedicated to evidence-based, science-led investing in public and private healthcare, life…” Source: RevenueBase Database · checked Sep 14, 2026
2	FA Technology Ventures	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	n/a	109 contacts →
	Strong evidence “FA Technology Ventures is an independent, established venture capital firm.” Source: RevenueBase Database · checked Sep 14, 2026
3	Trillium Asset Management	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	77 contacts →
	Partial evidence “Trillium Asset Management offers investment strategies and services that seek to advance humankind towards a global sustainable economy, a just society, and a better world.” Source: RevenueBase Database · checked Sep 14, 2026
4	Clean Energy Ventures	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	54 contacts →
	Strong evidence “Clean Energy Ventures is a venture capital firm focused on investing in companies commercializing disruptive advanced energy technologies and business model innovations that can…” Source: RevenueBase Database · checked Sep 14, 2026
5	Mendoza Ventures	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	n/a	34 contacts →
	Partial evidence “Firm overview Mendoza Ventures is an early-stage and growth venture fund based in Boston.” Source: RevenueBase Database · checked Sep 14, 2026
6	MCJ	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	25 contacts →
	Indirect evidence “MCJ is an early-stage fund for the energy and industry transition and the inevitable impacts of climate change.” Source: RevenueBase Database · checked Sep 14, 2026
7	Equal Opportunity Ventures	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	21 contacts →
	Partial evidence “EO Ventures invests in early-stage businesses that increase opportunity in America.” Source: RevenueBase Database · checked Sep 14, 2026
8	January Ventures	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	21 contacts →
	Partial evidence “January Ventures is a VC fund focused on angel/pre-seed in the US & Europe.” Source: RevenueBase Database · checked Sep 14, 2026
9	Spring Lane Capital	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	18 contacts →
	Partial evidence “Spring Lane Capital offers a new approach to faster growth for companies that deploy smaller-scale projects and equipment.” Source: RevenueBase Database · checked Sep 14, 2026
10	Conservation Resources	Indirect evidence	Boston, United StatesHQ checked Sep 14, 2026	11-50	16 contacts →
	Indirect evidence “Conservation Resources is an impact investment organization founded in 2004.” Source: RevenueBase Database · checked Sep 14, 2026
11	Liquidmetal Ventures	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	13 contacts →
	Strong evidence “LiquidMetal Ventures is a Boston based, early-stage focused venture capital fund focusing on Energy & Sustainability, Biotech & Healthcare and AI & Robotics, with a mission…” Source: RevenueBase Database · checked Sep 14, 2026
12	Wave Equity Partners	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	12 contacts →
	Partial evidence “Founded in 2013, WAVE Equity Partners is an independent sustainability-focused private investment firm that makes investments in early-growth companies whose proven clean…” Source: RevenueBase Database · checked Sep 14, 2026
13	Rockport Capital	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	12 contacts →
	Strong evidence “RockPort Capital is a multi-stage venture capital firm that invests in the areas of alternative and traditional energy, mobility, and sustainability.” Source: RevenueBase Database · checked Sep 14, 2026
14	Boston Harbor Angels	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	9 contacts →
	Indirect evidence “Boston Harbor Angels, Celebrating 20 Years of Angel Investing, like a lighthouse, helps entrepreneurs navigate and grow their start-up businesses through the treacherous waters of…” Source: RevenueBase Database · checked Sep 14, 2026
15	The Lynch Foundation	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Indirect evidence “The Lynch Foundation views giving as an investment in humanity’s potential.” Source: RevenueBase Database · checked Sep 14, 2026
16	Workshop Venture Partners	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	5 contacts →
	Partial evidence “Workshop is a Venture Studio that invests and builds alongside founders in climate and education.” Source: RevenueBase Database · checked Sep 14, 2026
17	Blindspot Ventures	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Strong evidence “Blindspot Ventures is a seed focused venture capital fund based in Boston, backing cross vertical infrastructure and platform technologies We partner with contrarian founders…” Source: RevenueBase Database · checked Sep 14, 2026
18	Millennium Capital Management	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	4 contacts →
	Partial evidence “Welcome to Millennium Capital, a division of Millennium Management Corp.” Source: RevenueBase Database · checked Sep 14, 2026
19	Water Bear Ventures	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Partial evidence “Water Bear Ventures invests in Pre-Seed, Seed and Series A startups focused on disruptive technologies with resilient teams.” Source: RevenueBase Database · checked Sep 14, 2026
20	Meridian Ventures	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Indirect evidence “At Meridian, we invest in audacious founders building the next generation of durable technologies and culture that positively transform humanity.” Source: RevenueBase Database · checked Sep 14, 2026
21	Accelr8 Ventures	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Indirect evidence “AccelR8 is an investment firm investing to accelerate the transition to a decarbonized and resilient economy.” Source: RevenueBase Database · checked Sep 14, 2026
22	Evans Capital	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Strong evidence “Founded in 2019, Evans Capital is a private investment fund focused on early-stage venture capital investments in technology, health care and other growth industries.” Source: RevenueBase Database · checked Sep 14, 2026
23	Helicase Venture	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	2 contacts →
	Strong evidence “Helicase Venture is a venture capital fund based in Boston, Massachusetts.” Source: RevenueBase Database · checked Sep 14, 2026
24	Climate Venture Partners	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	1 contacts →
	Partial evidence “Climate Venture Partners is currently raising a pre-seed round for Applied Bioplastics.” Source: RevenueBase Database · checked Sep 14, 2026
25	Pluralize Capital	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	1 contacts →
	Partial evidence “We are working towards a better economy in America, where capital protects our planet and builds wealth equitably.” Source: RevenueBase Database · checked Sep 14, 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: sustainable venture capital firms. 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 sustainable venture capital firms.
Partial evidence: Its own public description names part of sustainable venture capital firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable venture capital firms. 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 41 sustainable venture capital firms based in Boston, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 329 reachable decision-makers.

Free signup · no credit card

View the full list →

Sustainable venture capital firms based in Boston, United States at a glance

As of Sep 14, 2026

44.1%Verified-email coverage

18.2Average contacts per company

1-10Median size (employees)

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

11-50

201-500

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 41 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 sustainable venture capital firms, 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 “sustainable venture capital firms”. 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 sustainable venture capital firms), 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 sustainable venture capital firms, 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, 329 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 14, 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.

Sustainable venture capital firms by metro in the United States

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 sustainable venture capital firms, 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 sustainable venture capital firms are there based in Boston, United States?

RevenueBase identified 41 sustainable venture capital firms 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?

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

Which city in the United States has the most sustainable venture capital firms?

New York leads the United States with 170 headquartered companies, followed by San Francisco (134) and Los Angeles (66). Boston has 41.

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 329 verified decision-maker contacts tracked across these 41 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 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 41 sustainable venture capital firms based in Boston, United States. Start with a free account, no credit card.

Download this list →

Related lists

Sustainable venture capital firms by geography

Browse the directory

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.