· Private foundation
Charles J & Elizabeth R Koch 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 FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k13 grants · $20k
- $10k–50k6 grants · $115k
| Recipient | Amount |
|---|---|
| CLEVELAND CLINIC FOUNDATION | $43,300 |
| SOCIETY OF THE FOUR ARTS | $25,000 |
| ST THOMAS MORE PLAY GROUP | $15,000 |
| MALTA AMERICAN ASSOCIATION | $11,950 |
| PECONIC BAY MEDICAL CENTER FOUNDATION | $10,000 |
| FLAGLER MUSEUM | $10,000 |
| JOHN HOPKINS UNIVERSITY | $5,000 |
| CATHOLIC CHARITIES OF THE DIOCESE OF PALM BEACH | $3,500 |
| LAWRENCEVILLE SCHOOL | $2,000 |
| DARIEN LAND TRUST | $1,000 |
| COMMUNITY FUND OF DARIEN | $1,000 |
| LEDGE LIGHTHOUSE FOUNDATION | $1,000 |
| GREENS LEDGE LIGHT PRESERVATION SOCIETY INC | $1,000 |
| MATHER HOMESTEAD FOUNDATION | $1,000 |
| MUSEUM OF DARIEN | $1,000 |
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 (FY24–25, $7k) land where the poverty rate runs at 11%, against an area that typically sits at 9%. 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.
30 repeat relationships — 17 still active in FY2025, 13 since wound down; 2 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, 92% of grant dollars renewed an existing relationship; $11k 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
CASE WESTERN RESERVE UNIVERSITY7× · 2017–2023 · $820k · revenue +50%- TSThe Society of the Four Arts Inc3× · 2023–2025 · $308k · revenue +539%
- TMThe Musical Arts Association8× · 2017–2025 · $73k · revenue +45%
Funded once
- POPATRONS OF THE ARTS VATICAN MUSEUMSone grant, 2024 · $10k
- KSKENT SCHOOLone grant, 2021 · $2k · revenue +8%
- MOMetropolitan Operaone grant, 2018 · $2k
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 Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.
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…
Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.
To educate students to be ethical and socially responsible leaders in a global community.
Dickinson college provides a useful, innovative and interdisciplinary education in the liberal arts and sciences to prepare students to lead rich and fulfilling lives of engaged global citizenship
Seton hall university is a catholic institution of higher education
Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…
The corporation of saint mary's college, notre dame (saint mary's) is a catholic, residential, women's, liberal arts college offering undergraduate degrees and co-educational graduate programs. (continued in schedule o)
Undergraduate, graduate, and professional education and research across a broad array of academic domains.
Williams College strives to achieve educational excellence by fostering a community of learning in collaboration with students, faculty, staff, devoted alumni and parents.
The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."
See Form 990, Part I, Line 1, Description of Organization Mission.
For reference, the grantee most central to the portfolio’s shape is Trustees of the Lawrenceville School and the most unlike its peers is The Musical Arts Association. 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 76 years old; the field is 19. You back the established end — and your money leans older still.
The field is 18% 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 11% 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.
23 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. 23 of the 45 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 CASE WESTERN RESERVE UNIVERSITY ↗
- Who funds The Society of the Four Arts Inc ↗
- Who funds The Musical Arts Association ↗
- Who funds SMILES WITH STYLE INC ↗
- Who funds URSULINE COLLEGE ↗
- Who funds ST THOMAS MORE PLAY GROUP INC ↗
- Who funds UNIVERSITY SCHOOL ↗
- Who funds Vanderbilt University ↗
- Who funds REGINA HEALTH CENTER ↗
- Who funds CATHOLIC CHARITIES OF THE DIOCESE OF PALM BEACH INC ↗
- Who funds TRUSTEES OF THE LAWRENCEVILLE SCHOOL ↗
- Who funds DARIEN LIBRARY INC ↗
- Who funds TRUSTEES OF BOSTON COLLEGE ↗
- Who funds MATHER HOMESTEAD FOUNDATION ↗
- Who funds GREENS LEDGE LIGHT PRESERVATION SOCIETY INC ↗
- Who funds KENT SCHOOL ↗
- Who funds THE COMMUNITY FUND OF DARIEN ↗
- Who funds Physicians For Peace ↗
- Who funds MADISON SQUARE PARK CONSERVANCY INC ↗
- Who funds WHITNEY MUSEUM OF AMERICAN ART ↗
- Who funds DARIEN FIRE DEPARTMENT 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 Fedeli Family Charitable Foundation · National Philanthropic Trust · Morgan Stanley Global Impact Funding Trust Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · American Endowment Foundation · Vanguard Charitable Endowment Program · The Pfizer Foundation Inc · Donor Advised Charitable Giving Inc · The Bank of America Charitable Foundation Inc · Fidelity Investments Charitable Gift Fund · 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 Charles J & Elizabeth R Koch 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.
- Catholic Charities of the Diocese of Palm Beach Inc — 12% of income from government
- The Community Fund of Darien — 9% of income from government
- Mather Homestead Foundation — 4% of income from government
- Trustees of Boston College — 3% of income from government
- Chatham Historical Society Inc — 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 Charles J & Elizabeth R Koch Foundation?
Find your warmest path to Charles J & Elizabeth R Koch 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.