· Private foundation
The Salzberg 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 FY2018–2025.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| THE CHILDREN'S DREAM FUND | $5,000 |
| HARVARD UNIVERSITY | $5,000 |
| TAMPA JEWISH FEDERATION | $5,000 |
| CARL SCHURZ PARK CONSERVANCY | $3,500 |
| THE BUCKLEY SCHOOL | $2,500 |
| THE BREARLEY SCHOOL | $2,000 |
| RODALE INSTITUTE | $1,000 |
| KEEP PINELLAS BEAUTIFUL | $1,000 |
| THE FARMLINK PROJECT | $1,000 |
| COMMUNITY ACTION STOPS ABUSE | $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 (FY18–25) land where the poverty rate runs at 14%, against an area that typically sits at 9%. 91% 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.
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 +8% since the first grant, against 0% for the ones you funded once.
10 repeat relationships — 6 still active in FY2025, 4 since wound down; 3 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, 68% of grant dollars renewed an existing relationship; $7k 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
- CDCHILDREN'S DREAM FUND INC4× · 2022–2025 · $20k · revenue +14%
- TBTHE BREARLEY SCHOOL4× · 2022–2025 · $20k · revenue +8%
- TATHE ACTORS' FUND OF AMERICA4× · 2021–2024 · $11k · revenue +8%
Funded once
- HHHOPE & HEROES CHILDREN'S CANCER FUNDone grant, 2022 · $5k · revenue -11%
American Diabetes Associationone grant, 2024 · $5k · revenue 0%- IGIndividual grant recipientone grant, 2021 · $5k
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.
Sanford burnham prebys medical discovery institute's mission is to advance the biomedical sciences by cultivating the next generation of scientific leaders, providing meaningful opportunities for researchers of all backgrounds to learn,…
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.
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
The mission of the institute is to translate basic genetic and molecular mechanisms of schizophrenia and related developmental brain disorders into clinical advances that change the lives of affected individuals. it is catalyzing a new…
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.
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."
Medical research organization van andel research institute is an independent biomedical research organization committed to improving the health and enhancing the lives of current and future generations.
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…
To accelerate the development of breakthrough discoveries that will transform the lives of people living with food allergies.
The peterson institute for international economics (piie) is an independent nonprofit, nonpartisan research organization dedicated to strengthening prosperity and human welfare in the global economy through expert analysis and practical…
The mission of dfci is to provide expert, compassionate, and equitable care to children, adults, and their families, while advancing the understanding, diagnosis, treatment, cure, and prevention of cancer and related diseases. we train new…
We harness the power of plants for humankind and share the joy and beauty of tropical gardening with everyone. fairchild tropical botanic garden is a museum of tropical plants within a world famous, 83-acre designed landscape. it was…
For reference, the grantee most central to the portfolio’s shape is The Actors' Fund of America and the most unlike its peers is American Diabetes Association. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 39 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) — 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 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.
25 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. 25 of the 29 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 CHILDREN'S DREAM FUND INC ↗
- Who funds THE BREARLEY SCHOOL ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds THE ACTORS' FUND OF AMERICA ↗
- Who funds Information Technology and Innovation Foundation ↗
- Who funds FLORIDA HOLOCAUST MUSEUM INC ↗
- Who funds MUSEUM OF JEWISH HERITAGE A LIVING MEMORIAL TO THE HOLOCAUST ↗
- Who funds CARL SCHURZ PARK CONSERVANCY INC ↗
- Who funds HOPE & HEROES CHILDREN'S CANCER FUND ↗
- Who funds American Diabetes Association ↗
- Who funds NATIONAL GEOGRAPHIC SOCIETY ↗
- Who funds TAMPA JCCFEDERATION INC ↗
- Who funds ENVIRONMENTAL WORKING GROUP ↗
- Who funds KEEP PINELLAS BEAUTIFUL INC ↗
- Who funds VIOLENCE POLICY CENTER ↗
- Who funds DIABETES RESEARCH INSTITUTE FOUNDATION INC ↗
- Who funds BLOOD CANCER UNITED INC ↗
- Who funds DUKE UNIVERSITY ↗
- Who funds COMMUNITY ACTION STOPS ABUSE INC ↗
- Who funds PROJECT DRAWDOWN ↗
- Who funds FARMLINK PROJECT ↗
- Who funds THE STUDIO MUSEUM IN HARLEM ↗
- Who funds LEARNING INDEPENDENCE FOR TOMORROW INC ↗
- Who funds Rodale Institute ↗
- Who funds SAVE THE MANATEE CLUB 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: Rays Baseball Foundation Inc · Vinik Family Foundation · Debartolo Family Foundation Inc · Community Foundation of Tampa Bay Inc · Jpmorgan Chase Foundation · Top Jewish Foundation Inc · National Philanthropic Trust · Raymond James Charitable Endowment Fund · The Pfizer Foundation Inc · Enterprise Holdings Foundation · American Endowment Foundation · Charities Aid Foundation America
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 Salzberg 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.
- Community Action Stops Abuse Inc — 13% of income from government
- President and Fellows of Harvard College — 7% of income from government
- Tampa Jccfederation Inc — 3% of income from government
- Children's Dream Fund Inc — 0% of income from government
- Florida Holocaust Museum 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 The Salzberg Foundation?
Find your warmest path to The Salzberg 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.