· Private foundation
William J and Isobel G Clarke Foundation
Its FY2026 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
By grantee IRS cause code (NTEE).
A cause breakdown isn’t shown here: 66% of WILLIAM J AND ISOBEL G CLARKE FOUNDATION’s grantee dollars fall outside its nine largest cause areas, whether because the recipient carries no IRS cause code or because its cause sits in the long tail. A chart would be mostly one residual band and misrepresent the portfolio.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2026
- Under $10k8 grants · $40k
- $10k–50k1 grant · $30k
| Recipient | Amount |
|---|---|
| CHRIST THE KING LUTHERAN CHURCH | $30,000 |
| CIVIC CHORALE OF GREATER MIAMI | $7,500 |
| LIVE LIKE BELLA PARK | $5,000 |
| JUNIOR ORANGE BOWL COMMITTEE | $5,000 |
| CORAL GABLES COMMUNITY FOUNDATION | $5,000 |
| EPILEPSY FOUNDATION | $5,000 |
| Individual grant recipient | $5,000 |
| SOCIETY OF ST ANDREW | $5,000 |
| VOLUNTEER CENTER OF FAIRFAX COUNTY | $2,500 |
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 (FY22–25, $25k) land where the poverty rate runs at 12%, 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.
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 +3% since the first grant, against 0% for the ones you funded once.
9 repeat relationships — 3 still active in FY2026, 6 since wound down; 5 grantees were first funded in FY2026 (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 FY2026, 65% of grant dollars renewed an existing relationship; $23k 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
- KHKRISTI HOUSE INC2× · 2022–2023 · $20k · revenue +40%
- CGCORAL GABLES GARDEN CLUB INC2× · 2022–2024 · $20k · revenue +27%
- GIGABLESTAGE INC2× · 2024–2025 · $20k · revenue +3%
Funded once
- GCGABLES COMMUNITY FOUNDATIONone grant, 2021 · $50k
- EIENCOUNTERS IN EXCELLENCE INCone grant, 2022 · $15k · revenue -7%
- FMFROST MUSEUMone grant, 2021 · $10k
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 mission of communities in schools is to surround students with a community of support, empowering them to stay in school and achieve in life.
Miami-dade innovation authority bridges the gap between private innovators and the public sector to fast track innovation that improves quality of life for miamians.
Equality florida institute is the educational arm of the largest civil rights organization in florida dedicated to ending discrimination based on sexual orientation and gender identity.
To create a greater miami where everyone can thrive by accelerating generosity, leadership, and community engagement. the miami foundation serves as a philanthropic and community backbone for greater miami, bringing together donors,…
To provide dedicated volunteers to advocate in court for the best interests of children who have experienced abuse or neglect.
To focuses on public education and advocacy to generate public awareness of programs and services available to immigrants in Florida.
The adrienne arsht center is a leader in presenting innovative programming that mirrors south florida's diversity, as well as a catalyst for billions of dollars in new development in the downtown area. the center presents nearly 400 events…
Developing and administering a volunteer service program consisting principally of youth volunteers, which benefit the community by providing this needed public service. the program also develops employment opportunities for the youth.
Hope incs mission is to fight housing discrimination in miami-dade and broward counties and to promote equal housing opportunities throughout the state of florida.
To foster the recreational, educational, environmental and cultural life of the miami-dade county community by encouraging and soliciting support for our county's park system.
Equality florida action is the advocacy arm of the largest civil rights organization working to secure full equality for florida's lesbian, gay, bisexual, transgender, and queer (lgbtq) community.(continued on schedule o)we work to pass…
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.
For reference, the grantee most central to the portfolio’s shape is Junior Orange Bowl Committee Inc and the most unlike its peers is Actors' Playhouse Productions Inc. 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 36 years old; the field is 11. You back the established end — and your money leans older still.
The field is 30% 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 18% 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.
24 grantees tracked through their own filings, 2017–2026.
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 2017–2026, not grant rows in a single year — so this will not match the grant count on the cover. 24 of the 48 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 KRISTI HOUSE INC ↗
- Who funds NEW HORIZONS SERVICE DOGS ↗
- Who funds CORAL GABLES GARDEN CLUB INC ↗
- Who funds GABLESTAGE INC ↗
- Who funds JUNIOR ORANGE BOWL COMMITTEE INC ↗
- Who funds ENCOUNTERS IN EXCELLENCE INC ↗
- Who funds CIVIC CHORALE OF GREATER MIAMI INC ↗
- Who funds SAMARITAN'S PURSE ↗
- Who funds AMERICANS FOR IMMIGRANT JUSTICE INC F/K/A FLA IMMIGRANT ADVOCACY CENTER ↗
- Who funds CHILDREN'S BEREAVEMENT CENTER INC ↗
- Who funds Teach for America Inc ↗
- Who funds THE MOUNT VERNON LADIES' ASSOCIATION OF THE UNION ↗
- Who funds PROJECT YESINC ↗
- Who funds ZOO MIAMI FOUNDATION INC ↗
- Who funds THE POSSE FOUNDATION INC ↗
- Who funds CORAL GABLES COMMUNITY FOUNDATION INC ↗
- Who funds AYUDA INC ↗
- Who funds PARKINSON'S FOUNDATION INC ↗
- Who funds MIAMI SYMPHONY ORCHESTRA INC ↗
- Who funds DADE HERITAGE TRUST INC ↗
- Who funds ACTORS' PLAYHOUSE PRODUCTIONS 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: The Batchelor Foundation Inc · Mightycause Charitable Foundation · The Miami Foundation Inc · Dunspaugh Dalton Foundation Inc · The Kirk Foundation · William J and Tina Rosenberg · The Elizabeth C Lambertson Foundation · Peacock Foundation Inc · Greater Miami Jewish Federation Inc · United Way Miami Inc · The Sain-Orr and Royak-Deforest Steadman Foundation · Assurant 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 William J and Isobel G Clarke 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.
- Kristi House Inc — 49% of income from government
- Care Elementary School Inc — 8% of income from government
- Zoo Miami Foundation 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.
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How do I get to William J and Isobel G Clarke Foundation?
Find your warmest path to William J and Isobel G Clarke 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.