· Private foundation
The Longhill Charitable 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 $10k6 grants · $25k
- $10k–50k44 grants · $1.1M
- $50k–250k10 grants · $635k
| Recipient | Amount |
|---|---|
| CANCER RESEARCH INSTITUTE | $100,000 |
| YALE LAW SCHOOL | $75,000 |
| CENTER FOR REPRODUCTIVE RIGHTS | $75,000 |
| NEW YORK WEILL CORNELL MED CENTER | $75,000 |
| FRIENDS OF STEWART PARK | $60,000 |
| HARVARD COLLEGE FUND | $50,000 |
| FEEDING AMERICA | $50,000 |
| COLLEGIATE SCHOOL | $50,000 |
| PLANNED PARENTHOOD FEDERATION OF AMERICA | $50,000 |
| SWARTHMORE COLLEGE | $50,000 |
| SOUTHERN POVERTY LAW CENTER | $45,000 |
| ACLU FOUNDATION | $40,000 |
| FLORENCE PROJECT | $40,000 |
| PLANNED PARENTHOOD OF ROCKY MOUNTAINS | $40,000 |
| PLANNED PARENTHOOD OF ILLINOIS | $40,000 |
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, $60k) land where the poverty rate runs at 17%, against an area that typically sits at 10%. 100% 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 +29% since the first grant, against +5% for the ones you funded once.
67 repeat relationships — 55 still active in FY2025, 12 since wound down; 4 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, 96% of grant dollars renewed an existing relationship; $78k 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
Feeding America6× · 2020–2025 · $350k · revenue +40%
SWARTHMORE COLLEGE6× · 2020–2025 · $295k · revenue +16%
COLLEGIATE SCHOOL INC6× · 2020–2025 · $290k · revenue +64%
Funded once
- DFDECHOMAI FOUNDATION NUMBER TWO LLCone grant, 2024 · $384k
- FTFUND TEXAS CHOICEgraduatedone grant, 2021 · $25k · revenue +224%
PLANNED PARENTHOOD OF GREATER TEXAS INCone grant, 2021 · $25k · revenue -24%
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.
We generate ideas, produce evidence, and design solutions to improve the lives of underserved populations around the world. we take a multidisciplinary, intergenerational, life-cycle approach that contributes to (see schedule o)four global…
Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)
The institute is a leading research and policy organization committed to advancing sexual and reproductive health and rights in the united states and globally.
Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.
To research and develop centrist policy ideas.
Ci works to spotlight and secure the critical benefits that nature provides to humanity.
Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.
Project drawdown's mission is to drive meaningful climate action by advancing science-based solutions and strategies. project drawdown's work is focused on three pillars: science - advancing science-based climate solutions and strategies;…
The council on foreign relations (cfr) is an independent, nonpartisan membership organization, think tank, and publisher dedicated to being a resource for its members, government officials, business executives, journalists, educators and…
To advance human rights and social justice in the americas.
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 committee to protect journalists promotes press freedom worldwide and defends the right of journalists to report the news safely and without fear of reprisal. cpj ensures the free flow of news and commentary by taking action wherever…
For reference, the grantee most central to the portfolio’s shape is National Forest Foundation and the most unlike its peers is Museum of the City of New York. 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 43 years old; the field is 18. You back the established end — and your money leans older still.
The field is 19% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 10% 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.
58 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. 58 of the 81 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
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 CANCER RESEARCH INSTITUTE INC ↗
- Who funds Feeding America ↗
- Who funds SWARTHMORE COLLEGE ↗
- Who funds COLLEGIATE SCHOOL INC ↗
- Who funds THE CENTER FOR REPRODUCTIVE RIGHTS INC ↗
- Who funds PLANNED PARENTHOOD FEDERATION OF AMERICA INC ↗
- Who funds FRIENDS OF STEWART PARK INC ↗
- Who funds SOUTHERN POVERTY LAW CENTER INC ↗
- Who funds AMERICAN CIVIL LIBERTIES UNION FOUNDATION INC ↗
- Who funds NEW ISRAEL FUND ↗
- Who funds THE UNION OF CONCERNED SCIENTISTS INC ↗
- Who funds PRO PUBLICA INC ↗
- Who funds FLORENCE IMMIGRANT & REFUGEE RIGHTS PROJECT INC ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds NORTHWELL HEALTH FOUNDATION ↗
- Who funds NATURAL HISTORY MUSEUM OF THE ADIRONDACKS ↗
- Who funds NATURAL RESOURCES DEFENSE COUNCIL INC ↗
- Who funds International Rescue Committee INC ↗
- Who funds ENVIRONMENTAL DEFENSE FUND INCORPORATED ↗
- Who funds Planned Parenthood of Illinois ↗
- Who funds WHARTON STUDIO MUSEUM ↗
- Who funds THE GLAUCOMA FOUNDATION INC ↗
- Who funds PLANNED PARENTHOOD GREAT PLAINS ↗
- Who funds HUMAN RIGHTS FIRST ↗
- Who funds THE BREAST CANCER RESEARCH FOUNDATION INC ↗
- Who funds SAMUEL WAXMAN CANCER RESEARCH FOUNDATION ↗
- Who funds CENTER FOR DISASTER PHILANTHROPY INC ↗
- Who funds THE ADIRONDACK COUNCIL INC ↗
- Who funds HUMAN RIGHTS WATCH INC ↗
- Who funds National Women's Health Network ↗
- Who funds MUSEUM OF THE CITY OF NEW YORK ↗
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: Jewish Communal Fund · National Philanthropic Trust · Vanguard Charitable Endowment Program · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc · American Online Giving Foundation Inc · Amazonsmile Foundation
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 The Longhill Charitable 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 or a single department — and drag the year to watch it move.
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 The Longhill Charitable Foundation?
Find your warmest path to The Longhill Charitable 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.