· 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 you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2020–2025.
Where the money goes
Your grants by size, and where they go.
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 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your 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 your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +17% since the first grant, against 0% for the ones you 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
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
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%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — 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…
For reference, the grantee most central to the portfolio’s shape is Prime Coalition Inc and the most unlike its peers is Internet Archive. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 31 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 5% of your grantees by number, and just 2% of your money.
The orgs you fund almost never close — 0.7% lost their exemption, against 13% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
137 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, 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; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Showing your 200 largest grantees by grant value.
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your 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 Mass Central Rail Trail Alliance Inc ↗
- Who funds ECOCITY BUILDERS ↗
- 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 GATHER NEW HAVEN INC (FORMELY NEW HAVEN LAND TRUST INC) ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — 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
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Helen & William Mazer Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.
- 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
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.
Warm introductions · Powered by PlinthPlus
How do I get to Helen & William Mazer Foundation?
Find your warmest path to Helen & William Mazer Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.