· Private foundation
The Heidtke 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 FY2021–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k6 grants · $20k
- $10k–50k1 grant · $15k
| Recipient | Amount |
|---|---|
| Individual grant recipient | $15,000 |
| YOUTH AMERICA GRAND PRIX | $5,000 |
| WILDLIFE CONSERVATION SOCIETY | $5,000 |
| ARCHAECOLOGICAL INSTITUTE OF AMERICA | $5,000 |
| ALISON COOK BEATTY DANCE | $2,000 |
| MISCELLAMEOUS CHARITIES | $1,998 |
| THE GROLIER CLUB | $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.
Dollar for dollar, your grants (FY21–25) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 81% 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 +31% since the first grant, against +28% for the ones you funded once.
6 repeat relationships — 2 still active in FY2025, 4 since wound down; 5 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, 9% of grant dollars renewed an existing relationship; $32k 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
- ACALISON COOK BEATTY DANCE INC4× · 2021–2025 · $16k · revenue +31%
- IGIndividual grant recipient2× · 2023–2024 · $10k
- GCGROLIER CLUB OF NEW YORK2× · 2021–2022 · $2k
Funded once
- BGBOYS & GIRLS CLUBone grant, 2021 · $5k
- TRTHE RESIDENT ACTING COMPANY INCgraduatedone grant, 2023 · $5k · revenue +159%
- JBJACOB BURNS FILM CENTER INCone grant, 2024 · $3k · revenue -4%
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.
Perform, promote and sustain classical ballet.
Mccarter is one of the country's flagship theatres and a cultural asset for all of central new jersey. a nationally renowned, independent performing arts center located on the campus of princeton university, the company is a…
Amda is committed to providing an unsurpassed performing arts education to a diverse community of creative artists. amda seeks to be both the school and the stage, where students are given the support and the freedom to find their voice…
Creative residency programs, artist development workshops, advanced training opportunities, and mentorship for professional actors and people who wish to participate in the performing arts.
Princeton ballet society's mission is to nurture a lifelong love of dance and lift the collective spirit through excellent, relevant, and accessible artistic and educational programs, with a focus on classical ballet.
Producing and developing plays and musicals.
At Atlantic, our aim is singular: to empower simple and honest storytelling that fosters greater understanding of our shared world. Across our work, we are a family of artists dedicated to exploring essential truths onstage, be it a show…
The mission of new york city center is to be new york city's leading center for dance and musical theater. dedicated to making the arts accessible to the broadest possible audience, city center seeks to create a welcoming environment and…
Park avenue armory's mission is to enable a diverse range of artists to create, students to explore, and audiences to experience epic, adventurous, relevant work that cannot be done elsewhere in new york. with its soaring…
The mission of bam is to be the home for curious people and adventurous ideas. bam supports artistic experimentation and champions inclusion and accessibility throughout the arts as presenter, activator, and connector.
Move|nyc| is a civic arts and social justice organization committed to cultivating a more diverse and inclusive society through transforming the field of professional dance. more than an arts organization, move|nyc| is a movement for…
For reference, the grantee most central to the portfolio’s shape is Youth America Grand Prix Inc and the most unlike its peers is Wildlife Conservation Society. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
9 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. 9 of the 19 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 ALISON COOK BEATTY DANCE INC ↗
- Who funds YOUTH AMERICA GRAND PRIX INC ↗
- Who funds Wildlife Conservation Society ↗
- Who funds THE RESIDENT ACTING COMPANY INC ↗
- Who funds JACOB BURNS FILM CENTER INC ↗
- Who funds JUILLIARD SCHOOL ↗
- Who funds RAMAPO-BERGEN ANIMAL REFUGE INC ↗
- Who funds AMERICAN INDIAN COLLEGE FUND ↗
- Who funds HOPE CHRISTIAN SERVICES ↗
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: 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 Heidtke 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.
- Hope Christian Services — 3% 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 Heidtke Foundation?
Find your warmest path to The Heidtke 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.