· Private foundation
The Horn Foundation
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 you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k19 grants · $76k
- $10k–50k25 grants · $474k
- $50k–250k13 grants · $1.1M
- $250k+4 grants · $1.5M
| Recipient | Amount |
|---|---|
| SUNDANCE INSTITUTE | $550,000 |
| HARVARD BUSINESS SCHOOL | $355,000 |
| DUKE UNIVERSITY | $315,000 |
| THE CLIMATE REALITY PROJECT | $300,000 |
| HOWARD UNIVERSITY | $200,000 |
| NRDC | $125,000 |
| WORLD WILDLIFE FUND | $100,000 |
| STATE LEADERSHIP PROJECT | $100,000 |
| AFI | $100,000 |
| THE WILDERNESS SOCIETY | $100,000 |
| ARCHER SCHOOL FOR GIRLS | $75,000 |
| DUKE MEMORIAL UNITED METHODIST CHURCH | $50,000 |
| GREATER LOS ANGELES ZOO ASSOCIATION | $50,000 |
| LA PHILHARMONIC ASSOCIATION | $50,000 |
| CAPTAIN PLANET FOUNDATION | $50,000 |
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 (FY17–24, $967k) land where the poverty rate runs at 14%, against an area that typically sits at 10%. 99% 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.
84 repeat relationships — 48 still active in FY2024, 36 since wound down; 13 grantees were first funded in FY2024 (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 FY2024, 87% of grant dollars renewed an existing relationship; $404k 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
NATURAL RESOURCES DEFENSE COUNCIL INC6× · 2019–2024 · $8.3M · revenue +37%- TATHE ALLIANCE FOR CLIMATE PROTECTION8× · 2017–2024 · $4.6M · revenue +99%
THE HOWARD UNIVERSITY4× · 2021–2024 · $800k · revenue +11%
Funded once
- NNRDCone grant, 2017 · $100k
- RLRESOURCES LEGACY FUNDgraduatedone grant, 2019 · $100k · revenue +70%
- GOGENESEE ORLEANS MINISTRY IN CONCERNone grant, 2020 · $100k
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 union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
To establish and promote programs to protect the global climate, forests, wildlife and the natural environment, through research, advocacy, and investigation.
The purpose of the water research foundation (wrf) is a definitive research organization to advance the science of all things water to better meet the evolving needs of its subscribers and the water sector. to engage exclusively in…
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…
Advance science, engineering, and innovation throughout the world for the benefit of all. the world's largest multidisciplinary scientific society and a leading publisher of cutting-edge research through its science family of journals,…
Friends of the earth strives for a more healthy and just world by defendng the environment and human health while advancing social and economic justice by conducting research and education, transforming the economy so it protects the…
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…
American gas association's (the association) mission is to develop and advocate for informed, innovative, and durable policy that fulfills our nation's energy needs, environmental aspirations and economic potential. we are committed to…
To strenghten people's ability to guarantee their individual and collective right to a healthy environment, via the development, implementation, and effective enforcement of national and international law.
To drive transformational adaptation to protect communities across the country from higher seas, stronger storms, and more frequent flooding.
At the internet society foundation, we focus on funding initiatives that strengthen the internet in function and reach so that it can effectively serve all people. our work advances the vision of the internet society (isoc): the internet…
For reference, the grantee most central to the portfolio’s shape is People for the American Way and the most unlike its peers is Orange Twins Rescue. 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) — 3% of your grantees by number, and just 0% 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.
146 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. 146 of the 197 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 NATURAL RESOURCES DEFENSE COUNCIL INC ↗
- Who funds THE ALLIANCE FOR CLIMATE PROTECTION ↗
- Who funds THE HOWARD UNIVERSITY ↗
- Who funds THE BARACK OBAMA FOUNDATION ↗
- Who funds THE ARCHER SCHOOL FOR GIRLS INC ↗
- Who funds DUKE UNIVERSITY ↗
- Who funds UCLA FOUNDATION ↗
- Who funds NATIONAL BREAST CANCER COALITION ↗
- Who funds GREATER LOS ANGELES ZOOLOGICAL ASSOCIATION ↗
- Who funds UNITED FRIENDS OF THE CHILDREN ↗
- Who funds PEOPLE FOR THE AMERICAN WAY ↗
- Who funds NEW VENTURE FUND ↗
- Who funds LOS ANGELES POLICE FOUNDATION ↗
- Who funds GEFFEN PLAYHOUSE INC ↗
- Who funds TREEPEOPLE INC ↗
- Who funds HEAL THE BAY ↗
- Who funds UTAH FILM CENTER ↗
- Who funds EVERGREEN COLLABORATIVE ↗
- Who funds AMERICAN SECURITY PROJECT ↗
- Who funds HARVARD-WESTLAKE SCHOOL ↗
- Who funds ALLIANCE FOR THE WILD ROCKIES INC ↗
- Who funds NATIONAL PARKS CONSERVATION ASSOCIATION ↗
- Who funds RACE TO ERASE MS ↗
- Who funds MOTION PICTURE AND TELEVISION FUND ↗
- Who funds CHILDREN'S INSTITUTE INC ↗
- Who funds WORLD WILDLIFE FUND INC ↗
- Who funds RESOURCES LEGACY FUND ↗
- Who funds THE WILDERNESS SOCIETY ↗
- Who funds STATE LEADERSHIP PROJECT ↗
- Who funds OCEANA INC ↗
- Who funds Save The Children Federation 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: California Community Foundation · Jewish Community Foundation of Los Angeles · Weingart Foundation · The Katie McGrath & Jj Abrams Family Foundation · The Annenberg Foundation · Bny Mellon Charitable Gift Fund · Tides Foundation · The Barry and Wendy Meyer Foundation · CGLC Charitable Trust · The Mark E Pollack Foundation · The Michael and Lori Milken Family Foundation · Maki 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 Horn 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.
- Save the Children Federation Inc — 30% of income from government
- City Year Inc — 11% 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 The Horn Foundation?
Find your warmest path to The Horn 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.