· Private foundation
The Perls Foundation Katherine Perls Et Al Trustees
Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2024
- Under $10k7 grants · $15k
- $10k–50k2 grants · $65k
- $50k–250k2 grants · $261k
- $250k+2 grants · $679k
| Recipient | Amount |
|---|---|
| KNOWLEDGE ECOLOGY INTERNATIONAL | $407,000 |
| PUBLIC CITIZEN FOUNDATION | $272,000 |
| STICHTING HEALTH ACTION | $161,000 |
| UNIVERSITIES ALLIED FOR ESSENTIAL MEDICINES | $100,000 |
| PLANNED PARENTHOOD FEDERATION OF AMERICA INC | $40,000 |
| FOOD FOR FREE INC | $25,000 |
| RAILS-TO-TRAILS CONSERVANCY | $7,300 |
| AMERICAN CIVIL LIBERTIES UNION | $2,000 |
| HAYMARKET PEOPLES FUND | $2,000 |
| INSTITUTE FOR POLICY STUDIES | $2,000 |
| CHARLES RIVER WATERSHED ASSOCIATION | $1,000 |
| GLOBE SANTA FUND | $500 |
| THE BUXTON SCHOOL | $500 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
US giving: 89% of grant dollars ($6.8M). The need read here covers only this US portion; the 11% that went abroad ($811k) is mapped below.
Its human-services grants (FY17–24, $485k) land where the poverty rate runs at 14%, against an area that typically sits at 10%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.
How this is measured
Beyond the US: 11% of all-years giving ($811k)
4 countries, by the recipient’s country on the filing.
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +14% since the first grant, against -84% for those funded once.
17 repeat relationships: 13 still active in FY2024, 4 since wound down.
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2024, 100% of grant dollars renewed an existing relationship; $0 went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- PCPUBLIC CITIZEN FOUNDATION INC7× · 2017–2024 · $2.2M · revenue +104%
- FFFOOD FOR FREE COMMITTEE INC8× · 2017–2024 · $200k · revenue +204%
RAILS TO TRAILS CONSERVANCY8× · 2017–2024 · $45k · revenue +35%
Funded once
- IFINSTITUTE FOR KNOWLEDGE ECOLOGYone grant, 2017 · $450k
- UEUAEM EUROPE EV FBO FUNDING ACCESS TO MEDICINES PROJECTSone grant, 2020 · $55k
- IGIndividual grant recipientone grant, 2018 · $30k
How this is measured
Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.
Closest unfunded matches
The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.
The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.
The open markets institute works to help people relearn how to use competition policy to build stronger democracies, more just and equitable societies, more innovative and sustainable economies, and a more secure and peaceful world.
The r street institute is a nonprofit, nonpartisan, public-policy research organization ("think tank"). our mission is to engage in policy research and outreach to promote free markets and limited, effective government. (continued on…
Improving the transparency and scientific integrity of climate solutions through open data and tools.
The Breakthrough Institute is a research center that identifies and promotes technological solutions to environmental and human development challenges.
Partnership for Policy Integrity (PFPI) uses data-driven advocacy and litigation to fight for forests, communities and the climate.
To promote free expression, academic freedom, viewpoint diversity, and open scientific inquiry in the MIT community
Wri is committed to creating change that improves people's lives and ensures the natural world can thrive. (see schedule o)wri's bold vision requires a formula for success we call "count it. change it. scale it.":- count it: our work is…
Iatp works locally and globally at the intersection of policy and practice to ensure fair and sustainable food, farm and trade systems.
To research and develop healthy climate solutions comprising global food security, ecosystem regeneration and carbon balance in seas and soils.
To partner with individuals and organizations to access, organize, and share data that inspires action that restores our environment.
How this is measured
12 grantees tracked through their own filings, 2017–2025.
Each grant beside the grantee’s revenue from every source, year by year.
How this is measured
Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 12 of the 26 grantees resolved in that span have returns of their own we could reconcile.
Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
Grantee by grantee: a decade per organization, before and after funding
A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.
- Who funds KNOWLEDGE ECOLOGY INTERNATIONAL ↗
- Who funds PUBLIC CITIZEN FOUNDATION INC ↗
- Who funds UNIVERSITIES ALLIED FOR ESSENTIAL MEDICINES NORTH AMERICA CORP ↗
- Who funds FOOD FOR FREE COMMITTEE INC ↗
- Who funds RAILS TO TRAILS CONSERVANCY ↗
- Who funds INSTITUTE FOR POLICY STUDIES ↗
- Who funds HAYMARKET PEOPLE'S FUND INC ↗
- Who funds LATINO STEM ALLIANCE ↗
- Who funds CHARLES RIVER WATERSHED ASSOCIATION INC ↗
- Who funds The Food Project Inc ↗
- Who funds BUXTON SCHOOLINC ↗
- Who funds CENTER FOR CONSTITUTIONAL RIGHTS ↗
Co-funders
Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.
Open a dossier: Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
How this is measured
How much its grantees rely on government
Each dot is one organization The Perls Foundation Katherine Perls Et Al Trustees funds: left to right is the share of its income from government, bottom to top the share from The Perls Foundation Katherine Perls Et Al Trustees. Bigger dots raise more.
- Charles River Watershed Association Inc: 8% of income from government
- Food for Free Committee Inc: 3% of income from government
How this is measured
Play a game based on Perls Foundation Katherine Perls Et Al Trustees’ filings →