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· Private foundation

The Sonia Alden Foundation Inc Co Dr Cathy Friedman

Its FY2025 filing reports that it accepted unsolicited grant applications.

$46k
Granted FY2025still arriving
9
Grants FY2025still arriving
6
States reached
$12k
Largest
01What it funds
0194% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Arts & Culture$583kReligion$66kEducation$45kCivil Rights$22kHealth$19kYouth Development$18kMembership Benefit$17kScience & Tech$5kOther$0
02FY2025 · 9 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k6 grants · $13k
  • $10k–50k3 grants · $34k
$3,000
Median grant
6
States reached
$1.2M
Total assets
Largest grants
RecipientAmount
MASTER VOICES$12,250
ROOMFUL OF TEETH VOCAL ARTS PROJECT$11,500
SOUTHERN JEWISH RESOURCE NETWORK SO$10,000
HOFF-BARTHELSON MUSIC SCHOOL$4,000
UNIVERSAL TECH INSTITUTE$3,000
WASHINGTON UNIVERSITY$2,500
NORTH KINGSTOWN COMMUNITY CHORUS$2,000
NEW YORK PET RESCUE$500
Individual grant recipient$500
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 (FY17–19, $314) land where the poverty rate runs at 13%, against an area that typically sits at 12%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 12%BOYSTOWN: $60 → 12%BOYSTOWN: $54 → 12%SEAFARERS HOUSE: $100 → 13%SEAFARERS HOUSE: $100 → 13%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.

Which US states its grants reach

WI
NY
MA
NJ
CT
RI
CA
NE
MO
VA
TN
NC
DC
AL
GA
TX
FL
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.

92%of every dollar goes to organizations it has funded before.
$730k · 77 repeat orgs$68k to everyone else

77 repeat relationships: 7 still active in FY2025, 70 since wound down; 2 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

77
57

Total granted

$730k
$54k

Median revenue growth · since first grant

+10%
+28%

Still filing today

58%
37%

New vs renewed · share of each year

In FY2025, 71% of grant dollars renewed an existing relationship; $14k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
Arts & CultureHealthEducationMembership BenefitFood & NutritionCivil RightsOther
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

  • SF
    SOUTH FLORIDA SYMPHONY ORCHESTRA INC
    8× · 2017–2024 · $199k · revenue +8%
  • HM
    HOFF-BARTHELSON MUSIC SCHOOL
    9× · 2017–2025 · $97k · revenue +9%
  • MC
    MIAMI CITY BALLET INC
    6× · 2017–2022 · $46k · revenue +46%

Funded once

  • NY
    New York Universitygraduated
    one grant, 2017 · $11k · revenue +76%
  • CS
    CLAUDIA SCHREIER CHOREOGRAPHY INC
    one grant, 2023 · $8k · revenue -71% · 25% of their budget
  • MB
    MICHAEL BOLTEN SCHOLARSHIP FUND
    one grant, 2019 · $5k
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
New York Genome Center Inc

Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.

Health
2
The United States Holocaust Memorial Museum

Chartered by a unanimous act of congress, the museum is america's national institution for the documentation, study, interpretation, and education of holocaust history and serves as our country's memorial to the victims of the holocaust.…

Arts & Culture
3
Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation

The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.

Science & Tech
4
Manhattan School of Music

Manhattan school of music is deeply committed to excellence in education, performance, and creative activity; to the humanity of the school's environment; and to the cultural enrichment of the larger community. a premiere international…

Arts & Culture
5
San Francisco Opera Association

We believe opera is a uniquely compelling, entertaining and emotionally thrilling art form. our mission is to bring together growing audiences to experience opera's transformative power.

Arts & Culture
6
Metropolitan Museum of Art

The metropolitan museum of art collects, studies, conserves, and presents significant works of art across all times and cultures in order to connect people to creativity, knowledge, and ideas.

Arts & Culture
7
The Young Men's and Young Women's Hebrew Association

For over 150 years, the 92nd street y, new york has been serving its communities and the larger world by bringing people together (continued on schedule o)and providing exceptional, groundbreaking programs in the performing and visual…

Religion
8
New York City Ballet Inc

Perform, promote and sustain classical ballet.

Arts & Culture
9
Amigos Del Museo Del Barrio Inc El Museo Del Barrio

El museo's mission is to preserve, interpret, and promote the artistic heritage of puerto ricans and all latin americans in the united states by means of exhibitions, public programs, publications, and educational activities.

Arts & Culture
10
New York Hall of Science

Nysci's mission is to nurture generations of passionate learners, critical thinkers, and active citizens through design make play - an approach to learning and engagement that is deeply rooted in research on stem learning and guides the…

Arts & Culture
11
The Paley Center for Media

Description of organization mission: the paley center for media is the premier institution dedicated to advancing the understanding of media-it's artistic value, social impact and historical importance-for the public and media…

Arts & Culture
12
University of Miami

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

Education
How this is measured
The grantee most central to the portfolio’s shape is The Philharmonic Symphony Society of Ny Inc; the most unlike its peers is Mustard Seed Society 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

67 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. 67 of the 136 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.

2
Load-bearing (≥25% of a budget)
5
Early backer (in before they grew)
66/67
Grantees still filing
45/67
Grew since first funded

Where the money sits, by cause and then by grantee

SOUTH FLORIDA SYMPHONY ORCHESTRA INC: $199,046 · Arts & CultureSOUTH FLORIDA SYMPHONY ORCHESTRA INCMASTERVOICES INC: $105,150 · Arts & CultureMASTERVOICES INCHOFF-BARTHELSON MUSIC SCHOOL: $97,000 · Arts & CultureHOFF-BARTHELSON MUSIC SCHOOLMIAMI CITY BALLET INC: $46,096 · Arts & CultureMIAMI CITY BALLET INCFLORIDA GRAND OPERA INC: $37,212 · Arts & CultureFLORIDA GRAND OPERA INC+20 more: $38,860 · Arts & Culture+20 moreCONGREGATION RODEPH SHALOM INC: $51,890 · OtherCONGREGATION RODEPH SHAL…WICK THEATRE: $20,046 · OtherWICK THEATRESCARSDALE SYNAGOGUE: $12,250 · OtherSCARSDALE SYNAGOGUEROOMFUL OF TEETH VOCAL ARTS PROJECT: $11,500 · OtherROOMFUL OF TEETH VOCAL A…+84 more: $78,379 · Other+84 moreWASHINGTON UNIVERSITY: $20,000 · EducationNew York University: $11,000 · EducationLYNN UNIVERSITY INC: $5,500 · Education+1 more: $425 · EducationSOUTHERN JEWISH RESOURCE NETWORK INC: $20,000 · Civil Rights+1 more: $200 · Civil RightsTHE ACTORS' FUND OF AMERICA: $16,800 · Membership Benefit+1 more: $12 · Membership BenefitROYAL DAMES OF CANCER RESEARCH INC: $7,645 · HealthNATIONAL SCLERODERMA FOUNDATION INC: $2,500 · HealthCALVARY HOSPITAL INC: $750 · HealthAmerican Heart Association Inc: $500 · HealthCHILDREN'S TUMOR FOUNDATION: $500 · HealthADLER APHASIA CENTER: $500 · Health+8 more: $1,475 · HealthCamp Live Oak Inc: $12,000 · Youth Development
Arts & Culture$523,364Other$174,065Education$36,925Civil Rights$20,200Membership Benefit$16,812Health$13,870Youth Development$12,000

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 SYMPHONY ORCHESTRA INC: $199,046 over 8y, 2.2% of budgetMASTERVOICES INC: $105,150 over 9y, 1.0% of budgetHOFF-BARTHELSON MUSIC SCHOOL: $97,000 over 9y, 0.4% of budgetMIAMI CITY BALLET INC: $46,096 over 6y, 0.1% of budgetFLORIDA GRAND OPERA INC: $37,212 over 7y, 2.2% of budgetSOUTHERN JEWISH RESOURCE NETWORK INC: $20,000 over 2y, 3.1% of budgetWASHINGTON UNIVERSITY: $20,000 over 8y, 0.0% of budgetTHE ACTORS' FUND OF AMERICA: $16,800 over 4y, 0.0% of budgetCamp Live Oak Inc: $12,000 over 4y, 1.8% of budgetNew York University: $11,000 over 1y, 0.0% of budgetFRACTURED ATLAS INC: $9,000 over 3y, 0.0% of budgetTHE FORT LAUDERDALE CHILDREN'S THEATRE INC: $7,775 over 2y, 0.6% of budgetROYAL DAMES OF CANCER RESEARCH INC: $7,645 over 3y, 1.0% of budgetCLAUDIA SCHREIER CHOREOGRAPHY INC: $7,500 over 1y, 25% of budgetLYNN UNIVERSITY INC: $5,500 over 4y, 0.0% of budgetTRIPLE SHADOW INC: $5,000 over 1y, 37% of budgetTHE PERLMAN MUSIC PROGRAM INC: $3,000 over 2y, 0.1% of budgetNATIONAL SCLERODERMA FOUNDATION INC: $2,500 over 1y, 0.1% of budgetAmerican Museum of Natural History: $2,225 over 4y, 0.0% of budgetIsland City Stage Inc: $1,800 over 3y, 0.2% of budgetCITYMEALS-ON-WHEELS: $1,402 over 4y, 0.0% of budgetPET RESCUE INCORPORATED: $1,300 over 3y, 0.1% of budgetTHE JEWISH MUSEUM: $1,190 over 5y, 0.0% of budgetSIMON WIESENTHAL CENTER INC: $950 over 4y, 0.0% of budgetTHE PHILHARMONIC SYMPHONY SOCIETY OF NY INC: $850 over 5y, 0.0% of budgetNew York Historical Society: $835 over 5y, 0.0% of budgetMUSEUM OF THE CITY OF NEW YORK: $800 over 3y, 0.0% of budgetCALVARY HOSPITAL INC: $750 over 4y, 0.0% of budgetAMERICAN FRIENDS OF MAGEN DAVID ADOM: $600 over 3y, 0.0% of budgetAMERICAN SOCIETY FOR YAD VASHEM INC: $550 over 4y, 0.0% of budgetSOUTHERN POVERTY LAW CENTER INC: $525 over 2y, 0.0% of budgetAmerican Heart Association Inc: $500 over 1y, 0.0% of budgetCHILDREN'S TUMOR FOUNDATION: $500 over 1y, 0.0% of budgetMUSTARD SEED SOCIETY INC: $500 over 1y, 3.2% of budgetYOUTH SERVICE LEAGUE INC: $500 over 1y, 0.2% of budgetADLER APHASIA CENTER: $500 over 1y, 0.0% of budgetLANDMARK WEST INC: $450 over 2y, 0.1% of budgetThe New York Public Library Astor Lenox and Tilden Foundations: $425 over 2y, 0.0% of budgetPOMPANO BASEBALL INC: $350 over 2y, 0.8% of budgetNEW YORK-PRESBYTERIAN FUND INC: $350 over 2y, 0.0% of budgetFRIENDS OF YAD SARAH INC: $350 over 3y, 0.0% of budgetGOLD COAST JAZZ SOCIETY INC: $340 over 1y, 0.1% of budgetGuttmacher Institute Inc: $300 over 3y, 0.0% of budgetTHE SHRINERS' HOSPITAL FOR CHILDREN: $300 over 2y, 0.0% of budgetTHE MABEL MERCER FOUNDATION INC: $300 over 1y, 0.2% of budgetTHE KENNEDY COLLECTIVE INC: $300 over 2y, 0.0% of budgetTHE LEAGUE OF PROFESSIONAL THEATRE WOMEN NEW YORK INC: $295 over 1y, 0.2% of budgetNEW YORK PUBLIC RADIO: $286 over 4y, 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.

  • Who funds SOUTH FLORIDA SYMPHONY ORCHESTRA INC ↗
  • Who funds MASTERVOICES INC ↗
  • Who funds HOFF-BARTHELSON MUSIC SCHOOL ↗
  • Who funds MIAMI CITY BALLET INC ↗
  • Who funds FLORIDA GRAND OPERA INC ↗
  • Who funds SOUTHERN JEWISH RESOURCE NETWORK INC ↗
  • Who funds WASHINGTON UNIVERSITY ↗
  • Who funds THE ACTORS' FUND OF AMERICA ↗
  • Who funds Camp Live Oak Inc ↗
  • Who funds New York University ↗
  • Who funds FRACTURED ATLAS INC ↗
  • Who funds THE FORT LAUDERDALE CHILDREN'S THEATRE INC ↗
  • Who funds ROYAL DAMES OF CANCER RESEARCH INC ↗
  • Who funds CLAUDIA SCHREIER CHOREOGRAPHY INC ↗
  • Who funds LYNN UNIVERSITY INC ↗
  • Who funds TRIPLE SHADOW INC ↗
  • Who funds THE PERLMAN MUSIC PROGRAM INC ↗
  • Who funds NATIONAL SCLERODERMA FOUNDATION INC ↗
  • Who funds American Museum of Natural History ↗
  • Who funds Island City Stage Inc ↗

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.

Community Foundation of Broward IncFL19.6× affinity7 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Community Foundation of Broward Inc · Funding Arts Broward Inc · The New York Community Trust · Jewish Communal Fund · Jpmorgan Chase Foundation · Morgan Stanley Global Impact Funding Trust Inc · Network for Good · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Donor Advised Charitable Giving Inc · Vanguard Charitable Endowment Program · Fidelity Investments Charitable Gift Fund

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 The Sonia Alden Foundation Inc Co Dr Cathy Friedman funds: left to right is the share of its income from government, bottom to top the share from The Sonia Alden Foundation Inc Co Dr Cathy Friedman. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 50%3%10%23%40%funder's share of their income ↑0%23%45%68%90%share of the org’s income from government →median 12%
  • The Kennedy Collective Inc: 79% of income from government
  • Adler Aphasia Center: 12% of income from government
  • The Shriners' Hospital for Children: 6% of income from government
  • Lynn University Inc: 0% of income from government
no gov moneyreceives it· size = income
5get no government money at all
19report government grants on their 990 we could not trace to a source (not plotted)
1rely on government for over half their income
⤢ axis zoomed · 0–90%
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 The Sonia Alden Foundation Inc Co Dr Cathy Friedman?

Find your warmest path to The Sonia Alden Foundation Inc Co Dr Cathy Friedman 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 136 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 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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