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Foundation Dossiers
Plinth

· Private foundation

William J and Tina Rosenberg

Its FY2025 filing reports that it accepted unsolicited grant applications.

$100k
Granted FY2025still arriving
9
Grants FY2025still arriving
3
States reached
$25k
Largest
01What you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
05Through PlinthRead
01What you fund
0199% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2021–2025.

Arts & Culture$190kHuman Services$140kEducation$100kEnvironment$70kCrime & Legal$60kHousing & Shelter$60kAnimals$50kYouth Development$50kOther$0
02FY2025 · 9 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k1 grant · $5k
  • $10k–50k8 grants · $95k
$10,000
Median grant
3
States reached
$3.3M
Total assets
Largest grants
RecipientAmount
SOUTH FLORIDA PBS INC$25,000
LEGAL SERVICES OF GREATER MIAMI INC$10,000
HABITAT FOR HUMANITY OF GREATER MIAMI$10,000
MAKING OF A CHAMPION YOUTH PROGRAM INC$10,000
THE SOCIETY OF ST ANDREW$10,000
HISTORICAL ASSOC OF SOUTHERN FLORIDA$10,000
ORCHESTRA MIAMI INC$10,000
NATIONAL AUDUBON SOCIETY INC$10,000
MERCY FLIGHT SOUTHEAST INC$5,000
02The need
03

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.

show:

Your human-services grants (FY21–24, $95k) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 79% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 11%AMERICAN RED CROSS: $10k → 14%REDLANDS CHRISTIAN MIGRANT ASSOCIATION I: $10k → 10%NEW HORIZONS SERVICE DOGS INC: $10k → 12%AMERICAN RED CROSS: $5k → 14%REDLANDS CHRISTIAN MIGRANT ASSOCIATION: $10k → 10%NEW HORIZONS SERVICE DOGS INC: $10k → 12%JEWISH COMMUNITY SERVICES OF SOUTH FLORI: $10k → 15%CHAPMAN PARTNERSHIP INC: $10k → 15%CHAPMAN PARTNERSHIP INC: $10k → 15%FRIENDS OF THE UNDERLINE INC: $5k → 15%GLORIA M SILVERIO FOUNDATION DBA: $5k → 15%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

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.

03Your edge
repeat funding

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.

71%of every dollar goes to organizations you’ve funded before.
$570k · 23 repeat orgs$235k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +15% since the first grant, against +15% for the ones you funded once.

23 repeat relationships — 6 still active in FY2025, 17 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

23
25

Total granted

$570k
$210k

Median revenue growth · since first grant

+15%
+15%

Still filing today

91%
76%

New vs renewed · share of each year

In FY2025, 75% of grant dollars renewed an existing relationship; $25k went to new ones.

50%100%’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’21’22’23’24’25
EducationHuman ServicesArts & CultureCrime & LegalHealthHousing & ShelterOther

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

  • SOUTH FLORIDA PBS INC
    4× · 2021–2025 · $100k · revenue +99%
  • HF
    HABITAT FOR HUMANITY OF GREATER MIAMI INC
    3× · 2021–2025 · $30k · revenue +25%
  • TM
    THE MAKING OF A CHAMPION YOUTH PROG
    3× · 2023–2025 · $30k · revenue +7%

Funded once

  • AI
    AYUDA INC
    one grant, 2024 · $10k · revenue 0%
  • HU
    HISPANIC UNITY OF FLORIDA INC
    one grant, 2023 · $10k · revenue +18%
  • JC
    JEWISH COMMUNITY SERVICES OF SOUTH FLORIDA INC
    one grant, 2024 · $10k · revenue -6%

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

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.

1
University of Miami
—
2
Court Appointed Special Advocate Guardian Ad Litem of Miami Co Inc

To provide dedicated volunteers to advocate in court for the best interests of children who have experienced abuse or neglect.

Human Services
3
Fairchild Tropical Botanic Garden Inc

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…

Environment
4
Biscayne Bay Waterkeeper Inc

In 2024, biscayne bay waterkeeper (d/b/a miami waterkeeper) built on our reputation by navigating challenges, seizing opportunities, and continuing our unwavering commitment to safeguarding our precious waterways and finding local…

Environment
5
University of Miami

See Form 990, Part I, Line 1, Description of Organization Mission.

Education
6
Florida's Children First Inc

Organization mission: florida's children first is a non-profit, nonpartisan, independent advocacy organization committed to protecting and advancing the rights of children and youth impacted by the child welfare, juvenile justice, and…

Human Services
7
Start Off Smart Inc

To effectively and efficiently guide individuals, children and families towards independence and safety and to improve the quality of life for the residents living and playing in the community using strong community collaboration.

Crime & Legal
8
Endeavor Miami Inc

Endeavor miami inc's mission is to lead the movement to catalyze long-term economic growth by selecting, mentoring, and accelerating the best high impact entrepreneurs in the south florida region. high-impact entrepreneurs are individuals…

Community Improvement
9
Gulf Coast Jewish Family and Community Services Inc

Inspired by jewish values, we protect the vulnerable, empower individuals and strengthen families. (continued on schedule o)

—
10
Miami Children's Museum Inc Fka Miami Youth Museum

Miami children's museum is a non-profit educational institution, which meets the needs of all children in our multicultural community. visitors of all ages are encouraged to play together, learn, imagine, and create. the museum offers…

Arts & Culture
11
Children's Case Management Organization Inc D/B/a Families First of Pb County

Families first of palm beach county, through innovative programs, promotes generational change by addressing families emotional, physical, and social well-being.

Environment
12
Clean Miami Beach Inc

Clean miami beach is dedicated to keeping our community and natural habitats free of garbage and harmful pollutants with a focus on single-use plastics. the goal is to teach residents, and educate the youth of today, how everyone can…

Environment

For reference, the grantee most central to the portfolio’s shape is The Education Fund Inc F/K/a Dade Public Education Fund in 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 42 years old; the field is 12. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number27%0%<5yr16%0%5–10yr20%7%10–20yr15%33%20–35yr9%31%35–55yr12%29%55yr+
THE FIELDby orgYOUR MONEYby value27%0%<5yr16%0%5–10yr20%8%10–20yr15%28%20–35yr9%22%35–55yr12%42%55yr+

The field is 27% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close — 0.0% lost their exemption, against 17% of the field you don’t fund.

orgs you fund
0.0%0/44
the rest of the field
17%
17,089/103,000

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.

04the grantee network

44 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. 44 of the 52 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.

0
Load-bearing (≥25% of a budget)
3
Early backer (in before they grew)
44/44
Grantees still filing
29/44
Grew since you first funded

Where your money sits — by cause, then by grantee

THE NATURE CONSERVANCY — $40,000 · OtherTHE NATURE CONSERVANCYAMERICAN CANCER SOCIETY INC — $20,000 · OtherAMERICAN CANCER SOCIETY INCGUARDIANSHIP PROGRAM OF DADE COUNTY INC — $20,000 · OtherGUARDIANSHIP PROGRAM OF DADE COUNTY …HISTORICAL ASSOCIATION OF SOUTHERN FLORIDA INC — $20,000 · OtherHISTORICAL ASSOCIATION OF SOUTHERN F…NATIONAL AUDUBON SOCIETY INC — $20,000 · OtherNATIONAL AUDUBON SOCIETY INCAYUDA INC — $10,000 · OtherHISPANIC UNITY OF FLORIDA INC — $10,000 · OtherENCOUNTERS IN EXCELLENCE INC — $10,000 · OtherAMERICAN CIVIL LIBERTIES UNION — $10,000 · OtherARCHDIOCESE OF MIAMI INC — $10,000 · OtherGABLESTAGE INC — $10,000 · OtherDADE LEGAL AID SOCIETY — $10,000 · OtherBIG BROTHERS AND BIG SISTERS OF — $10,000 · OtherFEEDING SOUTH FLORIDA INC — $15,000 · OtherFEEDING SOUTH FLORIDA INCTHE SOCIETY OF ST ANDREW INC — $10,000 · OtherGIRL SCOUT COUNCIL OF TROPICAL FLORIDA INC — $10,000 · Other+7 more — $35,000 · Other+7 moreSOUTH FLORIDA PBS INC — $100,000 · Arts & CultureSOUTH FLORIDA PBS INCACTORS' PLAYHOUSE PRODUCTIONS INC — $20,000 · Arts & CultureACTORS' PLAYHOUSE PRO…THE CORAL GABLES MUSEUM CORP — $10,000 · Arts & CultureTHE CORAL GABLES MUSE…THE MOUNT VERNON LADIES' ASSOCIATION OF THE UNION — $10,000 · Arts & CultureTHE MOUNT VERNON LADI…PHILLIP AND PATRICIA FROST MUSEUM OF SCIENCE INC — $10,000 · Arts & CulturePHILLIP AND PATRICIA …ORCHESTRA MIAMI INC — $10,000 · Arts & CultureORCHESTRA MIAMI INCTHE MAKING OF A CHAMPION YOUTH PROG — $30,000 · Crime & LegalTHE MAKING OF A …Legal Services of Greater Miami Inc — $30,000 · Crime & LegalLegal Services o…FAMILY RESOURCE CENTER OF SOUTH FLORIDA INC — $20,000 · Crime & LegalFAMILY RESOURCE …VOICES FOR CHILDREN FOUNDATION INC — $20,000 · Crime & LegalVOICES FOR CHILD…KRISTI HOUSE INC — $20,000 · Crime & LegalKRISTI HOUSE INCTeach for America Inc — $20,000 · EducationTeach for Amer…CARE ELEMENTARY SCHOOL INC — $20,000 · EducationCARE ELEMENTAR…SOUTHERN SCHOLARSHIP FOUNDATION INC — $20,000 · EducationSOUTHERN SCHOL…THE EDUCATION FUND INC F/K/A DADE PUBLIC EDUCATION FUND IN — $20,000 · EducationTHE EDUCATION …PROJECT YESINC — $10,000 · EducationPROJECT YESINCTHE POSSE FOUNDATION INC — $10,000 · EducationTHE POSSE FOUN…CHILDREN'S BEREAVEMENT CENTER INC — $10,000 · EducationCHILDREN'S BER…NEW HORIZONS SERVICE DOGS — $20,000 · Human ServicesNEW HORIZONS…CHAPMAN PARTNERSHIP INC — $20,000 · Human ServicesCHAPMAN PART…REDLANDS CHRISTIAN MIGRANT ASSOCIATION INC — $20,000 · Human ServicesREDLANDS CHR…American National Red Cross & Its Constituent Chapters and Branches — $15,000 · Human ServicesAmerican Nat…JEWISH COMMUNITY SERVICES OF SOUTH FLORIDA INC — $10,000 · Human ServicesJEWISH COMMU…GLORIA M SILVERIO FOUNDATION — $5,000 · Human ServicesFRIENDS OF THE UNDERLINE INC — $5,000 · Human ServicesFLORIDA AUDUBON SOCIETY INC — $30,000 · EnvironmentDREAM IN GREEN INC — $20,000 · EnvironmentHABITAT FOR HUMANITY OF GREATER MIAMI INC — $30,000 · Housing & ShelterMiami Rescue Mission Inc — $10,000 · Housing & Shelter
Other$270,000Arts & Culture$160,000Crime & Legal$120,000Education$110,000Human Services$95,000Environment$50,000Housing & Shelter$40,000

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetSOUTH FLORIDA PBS INC — $100,000 over 4y, 0.2% of budgetTHE NATURE CONSERVANCY — $40,000 over 4y, 0.0% of budgetHABITAT FOR HUMANITY OF GREATER MIAMI INC — $30,000 over 3y, 0.1% of budgetTHE MAKING OF A CHAMPION YOUTH PROG — $30,000 over 3y, 22% of budgetLegal Services of Greater Miami Inc — $30,000 over 3y, 0.1% of budgetFLORIDA AUDUBON SOCIETY INC — $30,000 over 3y, 2.5% of budgetTeach for America Inc — $20,000 over 2y, 0.0% of budgetNEW HORIZONS SERVICE DOGS — $20,000 over 2y, 1.7% of budgetGUARDIANSHIP PROGRAM OF DADE COUNTY INC — $20,000 over 2y, 0.2% of budgetFAMILY RESOURCE CENTER OF SOUTH FLORIDA INC — $20,000 over 2y, 0.1% of budgetHISTORICAL ASSOCIATION OF SOUTHERN FLORIDA INC — $20,000 over 2y, 0.3% of budgetVOICES FOR CHILDREN FOUNDATION INC — $20,000 over 2y, 8.3% of budgetCARE ELEMENTARY SCHOOL INC — $20,000 over 3y, 0.4% of budgetKRISTI HOUSE INC — $20,000 over 2y, 0.2% of budgetDREAM IN GREEN INC — $20,000 over 2y, 4.3% of budgetSOUTHERN SCHOLARSHIP FOUNDATION INC — $20,000 over 2y, 0.6% of budgetCHAPMAN PARTNERSHIP INC — $20,000 over 2y, 0.1% of budgetREDLANDS CHRISTIAN MIGRANT ASSOCIATION INC — $20,000 over 2y, 0.0% of budgetTHE EDUCATION FUND INC F/K/A DADE PUBLIC EDUCATION FUND IN — $20,000 over 2y, 0.2% of budgetACTORS' PLAYHOUSE PRODUCTIONS INC — $20,000 over 2y, 0.2% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches — $15,000 over 2y, 0.0% of budgetFEEDING SOUTH FLORIDA INC — $15,000 over 2y, 0.0% of budgetAYUDA INC — $10,000 over 1y, 1.2% of budgetHISPANIC UNITY OF FLORIDA INC — $10,000 over 1y, 0.1% of budgetJEWISH COMMUNITY SERVICES OF SOUTH FLORIDA INC — $10,000 over 1y, 0.0% of budgetTHE SOCIETY OF ST ANDREW INC — $10,000 over 1y, 0.1% of budgetENCOUNTERS IN EXCELLENCE INC — $10,000 over 1y, 14% of budgetPROJECT YESINC — $10,000 over 1y, 1.2% of budgetTHE POSSE FOUNDATION INC — $10,000 over 1y, 0.0% of budgetGABLESTAGE INC — $10,000 over 1y, 0.3% of budgetTHE CORAL GABLES MUSEUM CORP — $10,000 over 1y, 0.9% of budgetTHE MOUNT VERNON LADIES' ASSOCIATION OF THE UNION — $10,000 over 1y, 0.0% of budgetMiami Rescue Mission Inc — $10,000 over 1y, 0.1% of budgetCHILDREN'S BEREAVEMENT CENTER INC — $10,000 over 1y, 0.8% of budgetPHILLIP AND PATRICIA FROST MUSEUM OF SCIENCE INC — $10,000 over 1y, 0.0% of budgetORCHESTRA MIAMI INC — $10,000 over 1y, 2.3% of budgetGIRL SCOUT COUNCIL OF TROPICAL FLORIDA INC — $10,000 over 1y, 0.4% of budgetSAMARITAN'S PURSE — $5,000 over 1y, 0.0% of budgetGLORIA M SILVERIO FOUNDATION — $5,000 over 1y, 0.9% of budgetISLAND DOLPHIN CARE INC — $5,000 over 1y, 0.4% of budgetSUITED FOR SUCCESS INC — $5,000 over 1y, 1.4% of budgetFRIENDS OF THE UNDERLINE INC — $5,000 over 1y, 0.2% of budgetPARKINSON'S FOUNDATION INC — $5,000 over 1y, 0.0% of budget
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.

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.

The Batchelor Foundat…The Miami Foundation …Mightycause Charitabl…The Kirk FoundationPublix Super Markets …Ruth Anderson Foundat…United Way Miami IncPeacock Foundation IncDunspaugh Dalton Foun…Baptist Health South …The Frederick a Deluc…Allegany Franciscan M…
The Batchelor Foundation IncFL46.5× affinity20 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Batchelor Foundation Inc · The Miami Foundation Inc · Mightycause Charitable Foundation · The Kirk Foundation · Publix Super Markets Charities Inc · Ruth Anderson Foundation · United Way Miami Inc · Peacock Foundation Inc · Dunspaugh Dalton Foundation Inc · Baptist Health South Florida Inc · The Frederick a Deluca Foundation Inc · Allegany Franciscan Ministries 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 William J and Tina Rosenberg 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.

2024
’20’21’22’23’24’25
no gov · 60%2%6%14%25%your share of their income ↑0%25%50%75%100%share of the org’s income from government →median 2%
  • Friends of the Underline Inc — 66% of income from government
  • Dream in Green Inc — 58% of income from government
  • Redlands Christian Migrant Association Inc — 51% of income from government
  • Kristi House Inc — 49% of income from government
  • Girl Scout Council of Tropical Florida Inc — 14% of income from government
  • Care Elementary School Inc — 8% of income from government
  • Feeding South Florida Inc — 5% of income from government
  • Historical Association of Southern Florida Inc — 2% of income from government
  • Legal Services of Greater Miami Inc — 2% of income from government
  • Phillip and Patricia Frost Museum of Science Inc — 1% of income from government
  • Jewish Community Services of South Florida Inc — 1% of income from government
  • Hispanic Unity of Florida Inc — 1% of income from government
  • Southern Scholarship Foundation Inc — 1% of income from government
  • The Education Fund Inc F/K/a Dade Public Education Fund in — 0% of income from government
  • Suited for Success Inc — 0% of income from government
  • Mercy Flight Se Inc dba Angel Flight Southeast — 0% of income from government
  • Chapman Partnership Inc — 0% of income from government
  • South Florida Pbs Inc — 0% of income from government
no gov moneyreceives it· size = income
6get no government money at all
11report government grants on their 990 we could not trace to a source (not plotted)
3rely on government for over half their income
typical government reliance, FY20–25

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.

05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to William J and Tina Rosenberg?

Find your warmest path to William J and Tina Rosenberg 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.

On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 52 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears. How we build these →

Generated from your IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home
State money flows
the interactive map of money crossing state lines