· Private foundation
Marshall E Rinker Sr Foundation Inc
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 $10k5 grants · $12k
- $10k–50k6 grants · $95k
- $50k–250k8 grants · $1.0M
- $250k+1 grant · $250k
| Recipient | Amount |
|---|---|
| UNIVERSITY OF FLORIDA HEALTH CANCER CENTER | $250,000 |
| FURMAN UNIVERSITY | $200,000 |
| HABITAT FOR HUMANITY | $200,000 |
| STETSON UNIVERSITY | $200,000 |
| ROBERTS WESLEYAN COLLEGE | $100,000 |
| TAKE STOCK IN CHILDREN | $100,000 |
| PLACE OF HOPE | $100,000 |
| URBAN YOUTH IMPACT | $50,000 |
| BRIGHT BEGINNINGS | $50,000 |
| CHILDREN'S HOME NETWORK | $30,000 |
| AMI KIDS INC | $25,000 |
| FURMAN UNIVERSITY | $10,000 |
| THE KING'S ACADEMY | $10,000 |
| PLATELET DISORDER SUPPORT ASSOCIATION | $10,000 |
| STETSON UNIVERSITY | $10,000 |
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 (FY17–24, $1.2M) land where the poverty rate runs at 11%, 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.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 5% of Marshall E Rinker Sr Foundation Inc’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another. Read by recipient address, 75% of the giving stays in FL; read by stated purpose it is 66% — less of the work is directed home than the recipients' locations suggest.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
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 +38% since the first grant, against +19% for the ones you funded once.
26 repeat relationships — 14 still active in FY2024, 12 since wound down; 4 grantees were first funded in FY2024 (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 FY2024, 96% of grant dollars renewed an existing relationship; $60k 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
- SUSTETSON UNIVERSITY INC8× · 2017–2024 · $1.8M · revenue +17%
- FUFURMAN UNIVERSITY8× · 2017–2024 · $1.7M · revenue +26%
- PBPALM BEACH ATLANTIC UNIVERSITY INC7× · 2017–2023 · $1.5M · revenue +51%
Funded once
- UOUNIVERSITY OF FLORIDAone grant, 2021 · $100k
- TGThe Green Turtle Cay Foundationone grant, 2019 · $10k · revenue -95%
- KCKIWANIS CLUB OF WEST PALM BEACH FOUNDATION INCgraduatedone grant, 2017 · $10k · revenue +50%
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.
Florida southern college (florida southern or the college) is committed to educational excellence and is a selective comprehensive, private, united methodist affiliated college with a strong liberal arts core and signature programs. (see…
Saint andrew's school is an independent school founded in the episcopal tradition. our mission is to build a community of learners, provide excellence in education, and nurture each student in mind, body, and spirit.
Provides innovative education in a dynamic urban setting. dedicated to academic excellence and community engagement,we prepare students of diverse backgrounds with the knowledge, skill,and experience to lead meaningful lives as informed…
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…
See Form 990, Part I, Line 1, Description of Organization Mission.
At Roger Williams University, students are prepared to be thinkers and doers ready to solve challenging problems with innovative solutions. RWU offers robust offerings of undergraduate, graduate and professional programs across eight…
The bolles school prepares students for college and life by inspiring excellence, courage, integrity and compassion in an academic community dedicated to nurturing mind, body and soul.
A preschool through 12th grade, private, college preparatory school. the school's mission statement is "together, cultivating the best in each for the benefit of all."
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Coker university is a student-centered, comprehensive university. it is dedicated to providing every student an academic curriculum based upon a uniformly excellent liberal arts core that enhances the structured development of key personal…
The mission of royal palm academy is to partner with families to provide an education of rich academics with catholic formation. we teach the mind, educate the heart, and form the character of tomorrow's leaders.
Since 1890, whitworth has held fast to its founding mission of providing "an education of mind and heart" through rigorous intellectual inquiry guided by dedicated christian scholars.
For reference, the grantee most central to the portfolio’s shape is The University of Florida Foundation Inc and the most unlike its peers is Wake Forest University. 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 56 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) — 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 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.
29 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. 29 of the 42 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 STETSON UNIVERSITY INC ↗
- Who funds FURMAN UNIVERSITY ↗
- Who funds PALM BEACH ATLANTIC UNIVERSITY INC ↗
- Who funds PLACE OF HOPE INC ↗
- Who funds ROBERTS WESLEYAN UNIVERSITY ↗
- Who funds THE UNIVERSITY OF FLORIDA FOUNDATION INC ↗
- Who funds Urban Youth Impact Inc ↗
- Who funds TSIC INC DBA/TAKE STOCK IN CHILDREN ↗
- Who funds Gulf Stream Council of Boy Scouts of America Inc ↗
- Who funds THE HISTORICAL SOCIETY OF PALM BEACH COUNTY INC ↗
- Who funds Save The Children Federation Inc ↗
- Who funds LOGGERHEAD MARINELIFE CENTER INC ↗
- Who funds BRIGHT BEGINNINGS INC ↗
- Who funds THE KING'S ACADEMY INC ↗
- Who funds PLATELET DISORDER SUPPORT ASSOCIATION ↗
- Who funds The Green Turtle Cay Foundation ↗
- Who funds KIWANIS CLUB OF WEST PALM BEACH FOUNDATION INC ↗
- Who funds Town of Palm Beach United Way Inc ↗
- Who funds Palm Healthcare Foundation Inc ↗
- Who funds WAKE FOREST UNIVERSITY ↗
- Who funds DUNN SCHOOL ↗
- Who funds Student Aces Inc ↗
- Who funds MARET SCHOOL INC ↗
- Who funds ROLLINS COLLEGE ↗
- Who funds FOOD FOR THE POOR INC ↗
- Who funds Rehabilitation Center for Children and Adults Inc ↗
- Who funds THE LORD'S PLACE 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: Community Foundation for Palm Beach and Martin Counties Inc · Quantum Foundation Inc · United Way of Palm Beach County Inc · David & Leighan Rinker Foundation Inc · Jm Rubin Foundation Inc · Lost Tree Village Charitable Foundation · The Batchelor Foundation Inc · American Endowment Foundation · Raymond James Charitable Endowment Fund · Verizon Foundation · The Bank of America Charitable Foundation Inc · National Philanthropic Trust
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 Marshall E Rinker Sr 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.
- Save the Children Federation Inc — 30% of income from government
- The Lord's Place Inc — 12% of income from government
- Gulf Stream Council of Boy Scouts of America Inc — 9% of income from government
- Covenant House Florida Inc — 1% of income from government
- Stetson University Inc — 0% of income from government
- Rollins College — 0% of income from government
- Tsic Inc Dba/Take Stock in Children — 0% of income from government
- Caridad Center Inc — 0% of income from government
- Place of Hope Inc — 0% of income from government
- Food for the Poor Inc — 0% of income from government
- Palm Beach Atlantic University 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 Marshall E Rinker Sr Foundation Inc?
Find your warmest path to Marshall E Rinker Sr 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.