· Private foundation
Hieronymus Foundation Inc
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 $10k20 grants · $55k
- $10k–50k11 grants · $190k
- $50k–250k2 grants · $430k
| Recipient | Amount |
|---|---|
| UNIVERSITY OF FLORIDA | $230,000 |
| PEN AMERICA | $200,000 |
| FLORIDA BULLDOG | $30,000 |
| AUTHORS GUILD FOUNDATION | $25,000 |
| ENTERTAINMENT COMMUNITY FUND | $25,000 |
| LOS ANGELES POLICE FOUNDATION | $25,000 |
| TAMPA BAY BUSINESSES FOR CULTURE AND THE ARTS | $25,000 |
| POETS & WRITERS | $10,000 |
| 8 BALL EMERGENCY FUND FOR JOURNALISTS | $10,000 |
| MARY LEE'S HOUSE | $10,000 |
| Individual grant recipient | $10,000 |
| POE BALTIMORE INC | $10,000 |
| BOOK INDUSTRY CHARITABLE FOUNDATION | $10,000 |
| PRO BONO NET INC | $5,000 |
| FLORIDA FIRST AMENDMENT FOUNDATION | $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.
Your human-services grants (FY17–25, $136k) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +40% since the first grant, against +26% for the ones you funded once.
54 repeat relationships — 27 still active in FY2025, 27 since wound down; 6 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, 91% of grant dollars renewed an existing relationship; $58k 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
THE UNIVERSITY OF FLORIDA FOUNDATION INC5× · 2017–2022 · $766k · revenue +56%- PAPEN AMERICAN CENTER INC8× · 2017–2025 · $680k · revenue +110%
- BBBroward Bulldog Inc DBA Florida Bulldog8× · 2017–2025 · $440k · revenue +46% · 62% of their budget
Funded once
- CHCALIFORNIA HOMICIDE INVESTIGATORS ASSOCone grant, 2020 · $40k · revenue -87%
- GKGARY KOCH PRO AM FOUNDATIONone grant, 2019 · $23k
- CPCOMMUNITY PARTNERSgraduatedone grant, 2017 · $15k · revenue +266%
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 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…
Pro publica is an independent, non-profit, pulitzer prize-winning newsroom that produces investigative journalism in the public interest. our work focuses exclusively on truly important stories. [see continuation on schedule o] we produce…
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.
The ucla foundation is the giving, receiving, and investing arm of the ucla campus. the foundation enables private donors to help build, sustain and advance one of the world's finest academic and research institutions. private philanthropy…
CITY REPORT, INC. serves the people of New York through independent journalism that answers their information needs and holds the powerful to account.
To drive transformational adaptation to protect communities across the country from higher seas, stronger storms, and more frequent flooding.
The mission of the organization is to foster the development of creative individuals as writers and artists and to promote public appreciation of excellence in the literary and graphic arts by publishing a magazine containing fiction,…
The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.
The open markets institute works to help people relearn how to use competition policy to build stronger democracies, more just and equitable societies, more innovative and sustainable economies, and a more secure and peaceful world.
Spcala is dedicated to the prevention of cruelty to animals through education, law enforcement, intervention and advocacy.
The institute's mission, as set out in its certificate of incorporation, is to promote the clarification and simplification of the law and its better adaptation to social needs, to secure the better administration of justice, and to…
The fsmb serves as the voice for state medical boards, supporting them through education, assessment, research and advocacy while providing services and initiatives that promote patient safety, quality health care and regulatory best…
For reference, the grantee most central to the portfolio’s shape is Community Foundation of Tampa Bay Inc and the most unlike its peers is 8 Ball Emergency Fund for Journalists. 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 36 years old; the field is 12. You back the established end — and your money leans older still.
The field is 27% startups (under 5 years old) — 2% of your grantees by number, and just 1% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 17% 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.
67 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. 67 of the 93 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 THE UNIVERSITY OF FLORIDA FOUNDATION INC ↗
- Who funds PEN AMERICAN CENTER INC ↗
- Who funds Broward Bulldog Inc DBA Florida Bulldog ↗
- Who funds FAIRWARNING INC ↗
- Who funds TAMPA BAY BUSINESS COALITION FOR THE ARTS INC ↗
- Who funds THE AUTHORS GUILD FOUNDATION INC ↗
- Who funds BOOK INDUSTRY CHARITABLE FOUNDATION ↗
- Who funds LOS ANGELES POLICE FOUNDATION ↗
- Who funds MARY LEES HOUSE INC ↗
- Who funds Literacy Partners Inc ↗
- Who funds POETS AND WRITERS INC ↗
- Who funds CALIFORNIA HOMICIDE INVESTIGATORS ASSOC ↗
- Who funds CHAPMAN UNIVERSITY ↗
- Who funds LOS ANGELES CITY COLLEGE FOUNDATION ↗
- Who funds Wags and Walks ↗
- Who funds POE BALTIMORE INC co Hurst R Hessey ↗
- Who funds COMMUNITY FOUNDATION OF TAMPA BAY INC ↗
- Who funds THE COMMUNITY FOUNDATION OF SARASOTA CO INC ↗
- Who funds LOS ANGELES MISSION INC ↗
- Who funds THE ACTORS' FUND OF AMERICA ↗
- Who funds SOUTHWEST FLORIDA COMMUNITY FOUNDATION INC ↗
- Who funds FEEDING AMERICA TAMPA BAY INC ↗
- Who funds LOS ANGELES REGIONAL FOOD BANK ↗
- Who funds MYSTERY WRITERS OF AMERICA INC ↗
- Who funds COMMUNITY PARTNERS ↗
- Who funds THE MIDNIGHT MISSION ↗
- Who funds International Rescue Committee 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: Vinik Family Foundation · Pinellas Community Foundation · Suncoast Credit Union Foundation · Community Foundation of Tampa Bay Inc · Kiwanis Foundation of Tampa Inc · New York Yankees Tampa Foundation Inc · Kimmins Terrier Foundation Inc · Chris T Sullivan Foundation Inc · The Spurlino Foundation · Lightning Foundation · Impactassetsinc · Debartolo Family Foundation Inc
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 Hieronymus Foundation Inc 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.
- Southwest Florida Community Foundation Inc — 69% of income from government
- The Coral Restoration Foundation Inc — 16% of income from government
- Reach Out and Read Inc — 9% of income from government
- Tampa Metropolitan Area Young Men's Christian Association Inc — 4% of income from government
- Mote Marine Laboratory Inc — 4% of income from government
- Feeding America Tampa Bay Inc — 2% of income from government
- First Amendment Foundation — 1% 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 Hieronymus Foundation Inc?
Find your warmest path to Hieronymus Foundation Inc 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.