· Private foundation
Helen & William Mazer Foundation
Its FY2025 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, FY2020 to 2025.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k91 grants · $238k
- $10k–50k25 grants · $582k
- $50k–250k3 grants · $155k
| Recipient | Amount |
|---|---|
| Individual grant recipient | $55,000 |
| Individual grant recipient | $50,000 |
| BRANDEIS UNIVERSITY | $50,000 |
| CONSERVATION LAW FOUNDATION | $48,000 |
| ECOCITY BUILDERS | $47,500 |
| Individual grant recipient | $45,000 |
| ROCKEFELLER UNIVERSITY | $40,000 |
| SPRING STREET CLIMATE FUND | $40,000 |
| Individual grant recipient | $35,500 |
| NATURE CONSERVANCY | $30,000 |
| BREAKTHROUGH T1D | $30,000 |
| JESPY HOUSE | $25,000 |
| UBUNTU PATHWAYS | $25,000 |
| NHCAT | $20,000 |
| NJ CONSERVATION FUND | $20,000 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its human-services grants (FY20–25, $272k) land where the poverty rate runs at 14%, against an area that typically sits at 10%. 72% 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
Which US states its grants reach
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 +17% since the first grant, against 0% for those funded once.
124 repeat relationships: 92 still active in FY2025, 32 since wound down; 25 grantees were first funded in FY2025 (too recent to call).
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 FY2025, 82% of grant dollars renewed an existing relationship; $159k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
CONSERVATION LAW FOUNDATION INC6× · 2020–2025 · $268k · revenue +75%- TRTHE ROCKEFELLER UNIVERSITY6× · 2020–2025 · $230k · revenue +1%
THE TRUSTEES OF RESERVATIONS6× · 2020–2025 · $181k · revenue +29%
Funded once
- IGIndividual grant recipientone grant, 2024 · $50k
- PCPRIME COALITION INCgraduatedone grant, 2020 · $50k · revenue +57%
- EBECOCITY BUILDERSone grant, 2020 · $40k · revenue -60%
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 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 union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Grist is an independent, non profit media organization dedicated to reporting on climate change.
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
To bring quality public television programs and resources to communities throughout new jersey and its tri-state neighbors. its content, both on-air and online, aims to reflect the diverse
The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…
To establish and promote programs to protect the global climate, forests, wildlife and the natural environment, through research, advocacy, and investigation.
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…
CITY REPORT, INC. serves the people of New York through independent journalism that answers their information needs and holds the powerful to account.
See schedule onorc at the university of chicago conducts research and data science on critical societal issues to guide decision-making and the development of programs and public policy. our experts identify relationships and trends, and…
The npr foundation ("foundation") is organized and operated exclusively for the benefit of its sole supported organization, national public radio, inc. ("npr inc."). the foundation supports npr inc. through various activities such as…
How this is measured
137 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. 137 of the 225 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
Showing the 200 largest grantees by grant value.
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 CONSERVATION LAW FOUNDATION INC ↗
- Who funds BRANDEIS UNIVERSITY ↗
- Who funds THE ROCKEFELLER UNIVERSITY ↗
- Who funds THE TRUSTEES OF RESERVATIONS ↗
- Who funds BOSTON CYCLISTS UNION INC ↗
- Who funds MDRC ↗
- Who funds UBUNTU PATHWAYS INC ↗
- Who funds OPEN SPACE INSTITUTE INC ↗
- Who funds THE INNOCENCE PROJECT INC ↗
- Who funds THE NATURE CONSERVANCY ↗
- Who funds SPRING STREET CLIMATE FUND INC ↗
- Who funds International Rescue Committee INC ↗
- Who funds EARTHJUSTICE ↗
- Who funds MASSACHUSETTS BICYCLE COALITION INCORPORATED ↗
- Who funds PRIME COALITION INC ↗
- Who funds CONGREGATION ORGANIZED FOR A NEW CT ↗
- Who funds ECOCITY BUILDERS ↗
- Who funds Mass Central Rail Trail Alliance Inc ↗
- Who funds THE BARRED ROCK FUND INC ↗
- Who funds THE INSTITUTE OF CONTEMPORARY ART INC ↗
- Who funds ASSOCIATION OF NEW JERSEY ENVIRONMENTAL COMMISSIONS ↗
- Who funds MALI HEALTH ORGANIZING PROJECT INC ↗
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: The Community Foundation for Greater New Haven · Investors Foundation Inc · The Hyde and Watson Foundation · Ej Grassmann Trust · Barr Foundation · S&P Global Foundation Fka the McGraw-Hill Research Foundation · Pseg Foundation Inc · Community Foundation of New Jersey · Eastern Bank Foundation · The Summit Foundation · Seedlings Foundation · William Caspar Graustein Memorial Fund
How this is measured
How much its grantees rely on government
Each dot is one organization Helen & William Mazer Foundation funds: left to right is the share of its income from government, bottom to top the share from Helen & William Mazer Foundation. Bigger dots raise more.
- Essex National Heritage Commission Inc: 87% of income from government
- Clifford Beers Community Care Center Inc: 75% of income from government
- Forensic Justice Project: 71% of income from government
- Emerge Connecticut Inc: 47% of income from government
- Climatehaven Inc: 42% of income from government
- La Colaborativa Inc: 34% of income from government
- Eastie Farm Inc: 13% of income from government
- Gather New Haven Inc (Formely New Haven Land Trust Inc): 11% of income from government
- The Cambridge Historical Society: 11% of income from government
- Brandeis University: 9% of income from government
- Northeastern University: 7% of income from government
- The Urban Farming Institute of Bostoninc: 4% of income from government
- Girls On the Run Greater Boston: 4% of income from government
- Third Sector New England Inc: 3% of income from government
- Northeast Wilderness Trust Corporation: 2% of income from government
- Montclair Film Festival Inc: 2% of income from government
- Jespy House Inc: 2% of income from government
- Trustees of Clark University: 2% of income from government
- Wpkn Incorporated: 2% of income from government
- The Trustees of Reservations: 2% of income from government
- Bikes Not Bombs Inc: 2% of income from government
- Greenroots Inc: 1% of income from government
- The Institute of Contemporary Art Inc: 1% of income from government
- Groton Hill Music Inc: 0% of income from government
- Hackensack Riverkeeper Inc: 0% of income from government
- Bennington College Corporation: 0% of income from government
How this is measured
Warm introductions · Powered by PlinthPlus
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