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William J and Tina Rosenberg at a glance

· Private foundation

William J and Tina Rosenberg

Its FY2026 filing reports that it accepted unsolicited grant applications.

$115k
Granted FY2026still arriving
10
Grants FY2026still arriving
1
States reached
$25k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0199% classified

What it funded, over time

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

Arts & Culture$190kHuman Services$140kEducation$100kEnvironment$70kCrime & Legal$60kHousing & Shelter$60kAnimals$50kYouth Development$50kOther$0
02FY2026 · 10 grants

Where the money goes

Grants by size, and the largest recipients.

$10,000
Median grant
1
States reached
$3.5M
Total assets
Largest grants
RecipientAmount
SOUTH FLORIDA PBS INC$25,000
MIAMI LIGHTHOUSE FOR THE BLIND AND VISUA$10,000
PHILLIP AND PARTICIA FROST MUSEUM$10,000
TEACH FOR AMERICA INC$10,000
FLORIDA AUDUBON SOCIETY$10,000
GABLESTAGE INC$10,000
ACTORS PLAYHOUSE PRODUCTIONS INC$10,000
DREAM IN GREEN INC$10,000
SUITED FOR SUCCESS INC$10,000
CARE ELEMENTARY SCHOOL INC$10,000
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Its 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 its 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
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

74%of every dollar goes to organizations it has funded before.
$680k · 25 repeat orgs$240k to everyone else

Grantees it renews have grown median revenue +17% since the first grant, against +5% for those funded once.

25 repeat relationships: 8 still active in FY2026, 17 since wound down; 2 grantees were first funded in FY2026 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

25
26

Total granted

$680k
$220k

Median revenue growth · since first grant

+17%
+5%

Still filing today

92%
77%

New vs renewed · share of each year

In FY2026, 83% of grant dollars renewed an existing relationship; $20k went to new ones.

50%100%’21’22’23’24’25’26
RenewedFirst-time

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

’21’22’23’24’25’26
EducationHuman ServicesArts & CultureCrime & LegalHealthEnvironmentOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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
    5× · 2021–2026 · $125k · revenue +99%
  • FA
    FLORIDA AUDUBON SOCIETY INC
    4× · 2021–2026 · $40k · revenue +837%
  • Teach for America Inc
    3× · 2021–2026 · $30k · revenue +5%

Funded once

  • DL
    DADE LEGAL AID SOCIETY
    one grant, 2023 · $10k
  • AC
    AMERICAN CIVIL LIBERTIES UNION
    one grant, 2021 · $10k
  • THE MOUNT VERNON LADIES' ASSOCIATION OF THE UNIONgraduated
    one grant, 2022 · $10k · revenue +32%
How this is measured

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

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
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
2
University of Miami
—
3
University of Miami

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

Education
4
Biscayne Bay Waterkeeper Inc

In 2025, 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
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
6
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
7
South Miami Childrens Clinic Inc

South miami children's clinic provides high-quality, accessible pediatric health care to uninsured, underinsured, medicaid, and other underserved children from birth through age 18, regardless of a family's ability to pay. the clinic…

Health
8
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
9
The Arc of South Florida Inc

To provide advocacy for the human rights and welfare for persons with developmental disabilities where such services are unavailable or are in short supply.

—
10
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
11
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
12
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
How this is measured
The grantee most central to the portfolio’s shape is The Education Fund Inc F/K/a Dade Public Education Fund in; 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.
04the grantee network

44 grantees tracked through their own filings, 2017–2026.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2026, not grant rows in a single year, so this will not match the grant count on the cover. 44 of the 54 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
4
Early backer (in before they grew)
44/44
Grantees still filing
29/44
Grew since first funded

Where the money sits, by cause and then by grantee

THE NATURE CONSERVANCY: $40,000 · OtherTHE NATURE CONSERVANCYGUARDIANSHIP 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 INCGABLESTAGE INC: $20,000 · OtherGABLESTAGE INCAMERICAN CANCER SOCIETY INC: $20,000 · OtherAMERICAN CANCER SOCIETY INCFEEDING SOUTH FLORIDA INC: $15,000 · OtherSUITED FOR SUCCESS INC: $15,000 · Other+17 more: $140,000 · Other+17 moreSOUTH FLORIDA PBS INC: $125,000 · Arts & CultureSOUTH FLORIDA PBS INCACTORS' PLAYHOUSE PRODUCTIONS INC: $30,000 · Arts & CultureACTORS' PLAYHOUSE PRODU…THE MOUNT VERNON LADIES' ASSOCIATION OF THE UNION: $10,000 · Arts & CulturePHILLIP AND PATRICIA FROST MUSEUM OF SCIENCE INC: $10,000 · Arts & CultureTHE CORAL GABLES MUSEUM CORP: $10,000 · Arts & CultureORCHESTRA MIAMI INC: $10,000 · Arts & CultureTeach for America Inc: $30,000 · EducationTeach for Ameri…CARE ELEMENTARY SCHOOL INC: $30,000 · EducationCARE ELEMENTARY…SOUTHERN SCHOLARSHIP FOUNDATION INC: $20,000 · EducationSOUTHERN SCHOLA…THE EDUCATION FUND INC F/K/A DADE PUBLIC EDUCATION FUND IN: $20,000 · EducationTHE EDUCATION F…THE POSSE FOUNDATION INC: $10,000 · EducationTHE POSSE FOUND…PROJECT YESINC: $10,000 · EducationPROJECT YESINCCHILDREN'S BEREAVEMENT CENTER INC: $10,000 · EducationCHILDREN'S BERE…Legal Services of Greater Miami Inc: $30,000 · Crime & LegalLegal Services…THE MAKING OF A CHAMPION YOUTH PROG: $30,000 · Crime & LegalTHE MAKING OF …FAMILY RESOURCE CENTER OF SOUTH FLORIDA INC: $20,000 · Crime & LegalFAMILY RESOURC…KRISTI HOUSE INC: $20,000 · Crime & LegalKRISTI HOUSE I…VOICES FOR CHILDREN FOUNDATION INC: $20,000 · Crime & LegalVOICES FOR CHI…REDLANDS CHRISTIAN MIGRANT ASSOCIATION INC: $20,000 · Human ServicesREDLANDS CH…CHAPMAN PARTNERSHIP INC: $20,000 · Human ServicesCHAPMAN PAR…NEW HORIZONS SERVICE DOGS: $20,000 · Human ServicesNEW HORIZON…American National Red Cross & Its Constituent Chapters and Branches: $15,000 · Human ServicesAmerican Na…JEWISH COMMUNITY SERVICES OF SOUTH FLORIDA INC: $10,000 · Human ServicesJEWISH COMM…FRIENDS OF THE UNDERLINE INC: $5,000 · Human ServicesGLORIA M SILVERIO FOUNDATION: $5,000 · Human ServicesFLORIDA AUDUBON SOCIETY INC: $40,000 · EnvironmentDREAM IN GREEN INC: $30,000 · EnvironmentHABITAT FOR HUMANITY OF GREATER MIAMI INC: $30,000 · Housing & ShelterMiami Rescue Mission Inc: $10,000 · Housing & Shelter
Other$310,000Arts & Culture$195,000Education$130,000Crime & Legal$120,000Human Services$95,000Environment$70,000Housing & Shelter$40,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetSOUTH FLORIDA PBS INC: $125,000 over 5y, 0.2% of budgetFLORIDA AUDUBON SOCIETY INC: $40,000 over 4y, 2.5% of budgetTHE NATURE CONSERVANCY: $40,000 over 4y, 0.0% of budgetTeach for America Inc: $30,000 over 3y, 0.0% of budgetHABITAT FOR HUMANITY OF GREATER MIAMI INC: $30,000 over 3y, 0.1% of budgetDREAM IN GREEN INC: $30,000 over 3y, 4.3% of budgetCARE ELEMENTARY SCHOOL INC: $30,000 over 4y, 0.4% of budgetACTORS' PLAYHOUSE PRODUCTIONS INC: $30,000 over 3y, 0.2% of budgetLegal Services of Greater Miami Inc: $30,000 over 3y, 0.1% of budgetTHE MAKING OF A CHAMPION YOUTH PROG: $30,000 over 3y, 22% of budgetSOUTHERN SCHOLARSHIP FOUNDATION INC: $20,000 over 2y, 0.6% of budgetREDLANDS CHRISTIAN MIGRANT ASSOCIATION INC: $20,000 over 2y, 0.0% of budgetGUARDIANSHIP PROGRAM OF DADE COUNTY INC: $20,000 over 2y, 0.2% of budgetCHAPMAN PARTNERSHIP INC: $20,000 over 2y, 0.1% of budgetHISTORICAL ASSOCIATION OF SOUTHERN FLORIDA INC: $20,000 over 2y, 0.3% of budgetFAMILY RESOURCE CENTER OF SOUTH FLORIDA INC: $20,000 over 2y, 0.1% of budgetKRISTI HOUSE INC: $20,000 over 2y, 0.2% of budgetNEW HORIZONS SERVICE DOGS: $20,000 over 2y, 1.7% of budgetGABLESTAGE INC: $20,000 over 2y, 0.3% of budgetVOICES FOR CHILDREN FOUNDATION INC: $20,000 over 2y, 8.3% of budgetTHE EDUCATION FUND INC F/K/A DADE PUBLIC EDUCATION FUND IN: $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 budgetSUITED FOR SUCCESS INC: $15,000 over 2y, 1.4% of budgetTHE MOUNT VERNON LADIES' ASSOCIATION OF THE UNION: $10,000 over 1y, 0.0% of budgetPHILLIP AND PATRICIA FROST MUSEUM OF SCIENCE INC: $10,000 over 1y, 0.0% of budgetTHE SOCIETY OF ST ANDREW INC: $10,000 over 1y, 0.1% of budgetTHE POSSE FOUNDATION INC: $10,000 over 1y, 0.0% of budgetPROJECT YESINC: $10,000 over 1y, 1.2% of budgetCHILDREN'S BEREAVEMENT CENTER INC: $10,000 over 1y, 0.8% 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 budgetENCOUNTERS IN EXCELLENCE INC: $10,000 over 1y, 14% of budgetAYUDA INC: $10,000 over 1y, 1.2% of budgetTHE CORAL GABLES MUSEUM CORP: $10,000 over 1y, 0.9% of budgetMiami Rescue Mission Inc: $10,000 over 1y, 0.1% of budgetGIRL SCOUT COUNCIL OF TROPICAL FLORIDA INC: $10,000 over 1y, 0.4% of budgetORCHESTRA MIAMI INC: $10,000 over 1y, 2.3% of budgetISLAND DOLPHIN CARE INC: $5,000 over 1y, 0.4% of budgetFRIENDS OF THE UNDERLINE INC: $5,000 over 1y, 0.2% of budgetSAMARITAN'S PURSE: $5,000 over 1y, 0.0% of budgetGLORIA M SILVERIO FOUNDATION: $5,000 over 1y, 0.9% of budgetPARKINSON'S FOUNDATION INC: $5,000 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: 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

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization William J and Tina Rosenberg funds: left to right is the share of its income from government, bottom to top the share from William J and Tina Rosenberg. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 60%2%6%14%25%funder's 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
How this is measured
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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 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 from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 54 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its 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.

Generated from the IRS Form 990-PF e-file return for fiscal year 2026, released 2026. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on William J and Tina Rosenberg’s filings →

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 endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home