· Private foundation
The Hemmerdinger 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 $10k1 grant · $5k
- $10k–50k1 grant · $10k
- $50k–250k1 grant · $75k
| Recipient | Amount |
|---|---|
| NEW YORK CITY POLICE FOUNDATION | $75,000 |
| HORACE MANN SCHOOL | $10,000 |
| SYRACUSE UNIVERSITY | $5,000 |
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.
Dollar for dollar, your grants (FY17–24) land where the poverty rate runs at 16%, against an area that typically sits at 12%. 86% of your 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.
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 +32% since the first grant, against +11% for the ones you funded once.
14 repeat relationships — 3 still active in FY2024, 11 since wound down.
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, 100% of grant dollars renewed an existing relationship; $0 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
- HAHARLEM ACADEMY7× · 2017–2023 · $1.4M · revenue +83%
- NYNEW YORK CITY POLICE FOUNDATION INC8× · 2017–2024 · $551k · revenue +14%
- MSMIDDLEBRIDGE SCHOOL INC4× · 2019–2022 · $225k · revenue +6%
Funded once
- TPTHE PHILHARMONIC SYMPHONY SOCIETY OF NY INCgraduatedone grant, 2018 · $25k · revenue +27%
- AFAMERICAN FOREIGN POLICY COUNCILone grant, 2017 · $10k · revenue +11%
- QMQUEENS MUSEUM OF ARTgraduatedone grant, 2017 · $10k · revenue +56%
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.
To educate students to be ethical and socially responsible leaders in a global community.
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…
Undergraduate, graduate, and professional education and research across a broad array of academic domains.
Manhattan university is an independent catholic instituion of higher learning that embraces qualified men and women of all faiths, cultures, and traditions. the mission of manhattan university is to provide a contemporary, person-centered…
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
At sarah lawrence college, our mission is to graduate citizens of the world who are diverse in every definition of the word, who take intellectual and creative risks, and who are able to focus exceptional intellectual discipline (continued…
Mitchell college educates students through a highly individualized educational approach that brings forward each student's potential, reveals their strengths, and fosters personal growth.
Fordham university, the jesuit university of new york, is committed to the discovery of wisdom and the transmission of learning, through research and through education of the highest quality. for more information, see schedule o.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
The university's goal in the coming decade is to advance learning through the integration of teaching, research and service to others. the core of this goal is to prepare graduates to engage with the world and lead lives of meaning. to do…
For reference, the grantee most central to the portfolio’s shape is Syracuse University and the most unlike its peers is Queens Museum of Art. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
18 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. 18 of the 22 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 HARLEM ACADEMY ↗
- Who funds NEW YORK CITY POLICE FOUNDATION INC ↗
- Who funds MIDDLEBRIDGE SCHOOL INC ↗
- Who funds Williams College ↗
- Who funds MUSEUM OF JEWISH HERITAGE A LIVING MEMORIAL TO THE HOLOCAUST ↗
- Who funds CITIZENS BUDGET COMMISSION INC ↗
- Who funds Horace Mann School ↗
- Who funds THE NIGHTINGALE-BAMFORD SCHOOL ↗
- Who funds THE CARNEGIE HALL CORPORATION ↗
- Who funds BROWN UNIVERSITY ↗
- Who funds NAVAL WAR COLLEGE FOUNDATION INC ↗
- Who funds THE ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND ↗
- Who funds THE PHILHARMONIC SYMPHONY SOCIETY OF NY INC ↗
- Who funds SYRACUSE UNIVERSITY ↗
- Who funds AMERICAN FOREIGN POLICY COUNCIL ↗
- Who funds QUEENS MUSEUM OF ART ↗
- Who funds EMPIRE CENTER FOR PUBLIC POLICY INC ↗
- Who funds KENYON COLLEGE ↗
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 New York Community Trust · The Goldman Sachs Charitable Gift Fund · Vanguard Charitable Endowment Program · Jewish Communal Fund · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · 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 Hemmerdinger 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.
- Williams College — 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 The Hemmerdinger Foundation?
Find your warmest path to The Hemmerdinger 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.