Company lists · Data refreshed September 2026

Top 25 Corporate foundation advisors based in the United States

Name: Corporate foundation advisors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,707 companies tracked

RevenueBase identified 1,707 corporate foundation advisors headquartered in the United States as of September 2026 and tracks 7,360 professional contacts across them, including 3,365 with verified work emails. New York is the largest hub.

This list covers corporate foundation advisors 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 19, 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 19, 2026 86% judged on-target in blind review

1,707Companies

7,360Contacts tracked

3,365Verified emails

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The 25 largest corporate foundation advisors based in the United States

Ranked by team size

Top 25 of 1,707 corporate foundation advisors based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to corporate foundation advisors: 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	Foundation Source	Partial evidence	Fairfield, CT, United StatesHQ checked Sep 19, 2026	201-500	268 contacts →
	Partial evidence “As the nation’s largest provider of foundation management services, we’re a trusted source for philanthropic expertise.” Source: RevenueBase Database · checked Sep 19, 2026
2	TCC Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	n/a	232 contacts →
	Indirect evidence “TCC Group collaborates with leaders to solve complex social problems.” Source: RevenueBase Database · checked Sep 19, 2026
3	Arabella Advisors	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	201-500	227 contacts →
	Strong evidence “Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.” Source: RevenueBase Database · checked Sep 19, 2026
4	BWF	Indirect evidence	Usa, United StatesHQ checked Sep 19, 2026	51-200	125 contacts →
	Indirect evidence “BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.” Source: RevenueBase Database · checked Sep 19, 2026
5	Zuri Group	Indirect evidence	Bend, OR, United StatesHQ checked Sep 19, 2026	51-200	106 contacts →
	Indirect evidence “Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Source: RevenueBase Database · checked Sep 19, 2026
6	Campbell & Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	102 contacts →
	Indirect evidence “Campbell & Company is a national nonprofit consulting firm that helps organizations create greater impact through fundraising, communications and strategic information services.” Source: RevenueBase Database · checked Sep 19, 2026
7	Third Plateau	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “One of Fast Company's 2025 Best Workplaces for Innovators!* Third Plateau is an impact consultancy on a mission to build lasting social good.” Source: RevenueBase Database · checked Sep 19, 2026
8	Schultz & Williams	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 19, 2026	51-200	83 contacts →
	Indirect evidence “Schultz & Williams is a national consulting firm dedicated to helping nonprofits of all types and sizes achieve financial stability, meet organizational goals, and support greater…” Source: RevenueBase Database · checked Sep 19, 2026
9	Marts&lundy	Indirect evidence	Lyndhurst, NJ, United StatesHQ checked Sep 19, 2026	51-200	79 contacts →
	Indirect evidence “Marts & Lundy serves as a trusted partner to mission-driven organizations whose bold aspirations are realized through the power of philanthropy.” Source: RevenueBase Database · checked Sep 19, 2026
10	The Columbus Foundation	Strong evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	51-200	77 contacts →
	Strong evidence “The Columbus Foundation is The Trusted Philanthropic Advisor® to more than individuals, families, and businesses that have created unique funds and planned gifts to make a…” Source: RevenueBase Database · checked Sep 19, 2026
11	Empower Success Corps	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence “At ESC, our mission is to empower nonprofits to achieve their goals & contribute to a more just and equitable world.” Source: RevenueBase Database · checked Sep 19, 2026
12	Clutch	Indirect evidence	Rancho Cordova, CA, United StatesHQ checked Sep 19, 2026	51-200	66 contacts →
	Indirect evidence “Real Solutions.” Source: RevenueBase Database · checked Sep 19, 2026
13	Freedman Consulting, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	61 contacts →
	Partial evidence “Freedman Consulting, LLC, a mission-driven firm, offers strategic consulting services to foundations, nonprofit organizations, and public interest coalitions, advising many of the…” Source: RevenueBase Database · checked Sep 19, 2026
14	Dickersonbakker	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 19, 2026	11-50	56 contacts →
	Indirect evidence “We help nonprofits amplify their impact to create more good in the world.” Source: RevenueBase Database · checked Sep 19, 2026
15	Elevate Smart Grants For Powerful Social Change	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	55 contacts →
	Indirect evidence “Elevate is a woman-owned and woman-led business established to help nonprofit organizations of all sizes build, sustain, and grow effective grant programs.” Source: RevenueBase Database · checked Sep 19, 2026
16	BDO FMA	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	11-50	54 contacts →
	Indirect evidence “BDO FMA exists to build a community of individuals with the confidence and skills to lead organizations that change the world.” Source: RevenueBase Database · checked Sep 19, 2026
17	Coxe Curry & Associates	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	11-50	49 contacts →
	Indirect evidence “Coxe Curry & Associates is the Atlanta consulting firm creating the strategies and connections that help nonprofits thrive.” Source: RevenueBase Database · checked Sep 19, 2026
18	Armstrong Mcguire & Associates	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 19, 2026	11-50	46 contacts →
	Indirect evidence “As nonprofit leaders, you have to stay agile and resilient to remain profitable, sustainable, and ahead-always ensuring that growth equals funding, and that funding equals…” Source: RevenueBase Database · checked Sep 19, 2026
19	Elma Philanthropies	Strong evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	45 contacts →
	Strong evidence “The ELMA Philanthropies provides philanthropic advisory services to the ELMA Group of Foundations from offices in New York, Cape Town, Johannesburg, and Kampala.” Source: RevenueBase Database · checked Sep 19, 2026
20	Changing OUR World	Partial evidence	New York, United StatesHQ checked Sep 19, 2026	51-200	44 contacts →
	Partial evidence “Changing Our World is a trusted social impact consulting firm that advises leading corporations and nonprofit organizations.” Source: RevenueBase Database · checked Sep 19, 2026
21	Carter, Advancing Philanthropy Worldwide	Indirect evidence	Vero Beach, FL, United StatesHQ checked Sep 19, 2026	11-50	43 contacts →
	Indirect evidence “Co-founded by Bob Carter and Steve Higgins in 2011, Carter selects its team members from the nation’s most respected nonprofit professionals.” Source: RevenueBase Database · checked Sep 19, 2026
22	Benefactor Group	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “Serving those who serve the common good.™ Fuel your cause with powerful fundraising, people, and systems.” Source: RevenueBase Database · checked Sep 19, 2026
23	Sterling Foundation Management, LLC	Partial evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	11-50	37 contacts →
	Partial evidence “Sterling Foundation Management is the oldest national private foundation management firm in the country and is the nation's leading facilitator of sales of income interests in…” Source: RevenueBase Database · checked Sep 19, 2026
24	ZIM Consulting, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 19, 2026	11-50	37 contacts →
	Indirect evidence “ZIM Consulting (ZIM) is a woman-owned, Denver-based, full-service consulting firm that specializes in grant management, strategic planning, and fundraising implementation services…” Source: RevenueBase Database · checked Sep 19, 2026
25	Ignite Philanthropy	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 19, 2026	11-50	36 contacts →
	Indirect evidence “Aspiring to maximize the power of giving, Ignite Philanthropy works with private donors and non-profit organizations to leverage their resources and ideas to achieve greater…” Source: RevenueBase Database · checked Sep 19, 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: corporate foundation advisors. 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 corporate foundation advisors.
Partial evidence: Its own public description names part of corporate foundation advisors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name corporate foundation advisors. 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 1,707 corporate foundation advisors based in the United States

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Corporate foundation advisors based in the United States at a glance

As of Sep 19, 2026

45.7%Verified-email coverage

4.3Average contacts per company

1-10Median size (employees)

5.4%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,545

11-50

135

51-200

201-500

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,707 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 corporate foundation advisors, 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 “corporate foundation advisors”. 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 corporate foundation advisors), 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 corporate foundation advisors, 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, 3,365 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 19, 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.

Corporate foundation advisors by metro

Corporate foundation advisors in New York92
Corporate foundation advisors in Chicago70
Corporate foundation advisors in Washington68
Corporate foundation advisors in Atlanta44
Corporate foundation advisors in Los Angeles34
Corporate foundation advisors in Seattle34
Corporate foundation advisors in Denver27
Corporate foundation advisors in San Francisco27
Corporate foundation advisors in Indianapolis25

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 corporate foundation advisors, 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 corporate foundation advisors are there based in the United States?

RevenueBase identified 1,707 corporate foundation advisors 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?

Foundation Source, headquartered in Fairfield, tops this list with the largest team on record.

Which city has the most corporate foundation advisors?

New York leads with 92 headquartered companies, followed by Chicago (70) and Washington (68).

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 3,365 verified decision-maker contacts tracked across these 1,707 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 19, 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.