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The Rittenberg Family Foundation at a glance

· Private foundation

The Rittenberg Family Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$33k
Granted FY2025still arriving
5
Grants FY2025still arriving
4
States reached
$14k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
0191% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Health$61kEducation$56kHuman Services$29kInternational$11kArts & Culture$8kYouth Development$7kCrime & Legal$2kFood & Nutrition$2kOther$0
02FY2025 · 5 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k3 grants · $9k
  • $10k–50k2 grants · $24k
$5,000
Median grant
4
States reached
$388k
Total assets
Largest grants
RecipientAmount
Boys & Girls Club of Pawtucket$14,000
Dyslexic Advantage$10,000
To Life$5,000
Candlelighters NYC$2,500
Pan Mass Challenge$1,000
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 (FY18–19, $10k) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%Honor Flight Chicago: $5k → 14%Honor Flight Chicago: $5k → 14%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

VT
NH
IL
NY
MA
PA
NJ
CT
CA
MD
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.

43%of every dollar goes to organizations it has funded before.
$95k · 11 repeat orgs$125k to everyone else

Grantees it renews have grown median revenue +49% since the first grant, against +30% for those funded once.

11 repeat relationships: 3 still active in FY2025, 8 since wound down; 2 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

11
19

Total granted

$95k
$101k

Median revenue growth · since first grant

+49%
+30%

Still filing today

73%
37%

New vs renewed · share of each year

In FY2025, 26% of grant dollars renewed an existing relationship; $24k went to new ones.

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

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

’17’18’19’20’21’23’24’25
HealthInternationalYouth DevelopmentHuman ServicesArts & CultureOther
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

  • CO
    CANDLELIGHTERS OF NEW YORK CITY INC
    8× · 2017–2025 · $25k · revenue +1%
  • HF
    Honor Flight Chicago Corp
    2× · 2018–2019 · $10k · revenue +31%
  • VD
    VERMONT DAY SCHOOL INC
    2× · 2017–2019 · $6k · revenue +215%

Funded once

  • TU
    The University of Vermont
    one grant, 2024 · $50k
  • FRIENDS OF THE ISRAEL DEFENSE FORCES
    one grant, 2023 · $10k · revenue -33%
  • TU
    THE UNIVERSITY OF VERMONT MEDICAL CENTERgraduated
    one grant, 2020 · $10k · revenue +60%
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
Memorial Sloan-Kettering Cancer Center

Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.

Health
2
Children's Hospital Corporation

Provider of pediatric healthcare, education, research & community service

Health
3
Sanford Burnham Prebys Medical Discovery Institute

Sanford burnham prebys medical discovery institute's mission is to advance the biomedical sciences by cultivating the next generation of scientific leaders, providing meaningful opportunities for researchers of all backgrounds to learn,…

Health
4
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
5
Children's Health Care

We champion the health needs of children and families. we are committed to improving children's health by providing the highest-quality, family centered care, advanced through research and education.

Health
6
Children's Hospital & Research Center At Oakland

The mission of children's hospital & research center at oakland is to protect and advance the health and well-being of children through clinical care, teaching and research.

Health
7
Phoenix Children's Hospital Foundation

Phoenix children's hospital foundation supports phoenix children's hospital through fundraising ensuring that the hospital continues to stay on the leading edge of pediatric medicine and is equipped to fulfill its mission to advance hope,…

Health
8
Beth Israel Hospital & Children's Hospital Medical Care Corporation

Pediatric healthcare, education & research

—
9
The Johns Hopkins Hospital

For more than 125 years, the mission of the johns hopkins hospital has been to lead the world in the diagnosis and treatment of disease and to train tomorrow's great physicians, nurses and scientists. above all, we aim to provide the…

Health
10
Dana-Farber Children's Hospital Cancer Care Inc

To oversee, coordinate and support the Pediatric Oncology Programs at Boston Children's Hospital and Dana-Farber Cancer Institute, Inc.

Health
11
Fred Hutchinson Cancer Center

Fred hutch cancer center ("fred hutch") unites innovative research and compassionate care to prevent and eliminate cancer and infectious disease. continued on schedule o

Health
12
Lucy Webb Hayes National Training School for Deaconesses & Missionaries

Sibley memorial hospital in washington, d.c., a member of johns hopkins medicine, has a distinguished history of serving the community since its founding in 1890. as a not-for-profit, full-service community hospital, sibley offers…

Health
How this is measured
The grantee most central to the portfolio’s shape is Abilis Inc; the most unlike its peers is Plantagenets Foundation 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

18 grantees tracked through their own filings, 2017–2025.

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 2025, not grant rows in a single year, so this will not match the grant count on the cover. 18 of the 32 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)
3
Early backer (in before they grew)
17/18
Grantees still filing
12/18
Grew since first funded

Where the money sits, by cause and then by grantee

The University of Vermont: $50,000 · OtherThe University of VermontSARA M HOLBROOK COMMUNITY CENTER INC: $17,500 · OtherSARA M HOLBROOK COMMUNITY CENTER INCBoys and Girls Club: $7,000 · OtherBoys and Girls ClubIndividual grant recipient: $6,000 · OtherIndividual grant recipientVERMONT DAY SCHOOL INC: $6,000 · OtherVERMONT DAY SCHOOL INCUniversity of Vermont Med Ctr: $5,000 · Other+12 more: $18,300 · Other+12 moreCANDLELIGHTERS OF NEW YORK CITY INC: $24,700 · HealthCANDLELIGHTERS OF NEW YORK CITY INCTO LIFE INC: $15,000 · HealthTO LIFE INCTHE UNIVERSITY OF VERMONT MEDICAL CENTER: $10,000 · HealthTHE UNIVERSITY OF VERMONT MEDICAL CE…DYSLEXIC ADVANTAGE BROCK EIDE: $10,000 · HealthDYSLEXIC ADVANTAGE BROCK EIDEChildrens Oncology Services Inc: $5,000 · HealthChildrens Oncology Services Inc+5 more: $6,300 · Health+5 moreBOYS & GIRLS CLUBS OF PAWTUCKET: $14,000 · Youth DevelopmentFRIENDS OF THE ISRAEL DEFENSE FORCES: $10,000 · InternationalHonor Flight Chicago Corp: $10,000 · Human ServicesSHELBURNE MUSEUM INC: $5,000 · Arts & Culture
Other$109,800Health$71,000Youth Development$14,000International$10,000Human Services$10,000Arts & Culture$5,000

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetCANDLELIGHTERS OF NEW YORK CITY INC: $24,700 over 8y, 0.9% of budgetSARA M HOLBROOK COMMUNITY CENTER INC: $17,500 over 3y, 0.6% of budgetTO LIFE INC: $15,000 over 3y, 1.0% of budgetFRIENDS OF THE ISRAEL DEFENSE FORCES: $10,000 over 1y, 0.0% of budgetTHE UNIVERSITY OF VERMONT MEDICAL CENTER: $10,000 over 1y, 0.0% of budgetDYSLEXIC ADVANTAGE BROCK EIDE: $10,000 over 1y, 7.4% of budgetVERMONT DAY SCHOOL INC: $6,000 over 2y, 0.6% of budgetChildrens Oncology Services Inc: $5,000 over 1y, 0.3% of budgetPAN-MASSACHUSETTS CHALLENGE INC: $3,000 over 3y, 0.0% of budgetTHE CHILDREN'S HOSPITAL OF PHILADELPHIA: $2,300 over 3y, 0.0% of budgetDana-Farber Cancer Institute Inc: $2,000 over 2y, 0.0% of budgetPlantagenets Foundation Inc: $1,000 over 1y, 0.2% of budgetA NEW WAY OF LIFE REENTRY PROJECT: $1,000 over 1y, 0.0% of budgetEPILEPSY FOUNDATION OF AMERICA: $500 over 1y, 0.0% of budgetABILIS INC: $500 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.

Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
Donor Advised Charitable Giving IncCO5× affinity4 shared granteesties to 2 of 2Hover any node to trace its alignments.Compare side by side →

Open a dossier: Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

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 Rittenberg Family Foundation funds: left to right is the share of its income from government, bottom to top the share from The Rittenberg Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%0%1%3%5%funder's share of their income ↑0%23%45%68%90%share of the org’s income from government →median 9%
  • Abilis Inc: 74% of income from government
  • Epilepsy Foundation of America: 22% of income from government
  • Shelburne Museum Inc: 9% of income from government
  • Dana-Farber Cancer Institute Inc: 7% of income from government
  • The University of Vermont Medical Center: 1% of income from government
  • Pan-Massachusetts Challenge Inc: 0% of income from government
no gov moneyreceives it· size = income
1get no government money at all
1report 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.

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 32 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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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