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· Private foundation

Samuel Rapaporte Jr Foundation

Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$105k
Granted FY2024still arriving
8
Grants FY2024still arriving
7
States reached
$40k
Largest
01What it funds
0175% classified

What it funded, over time

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

Education$320kPhilanthropy$245kHealth$204kRecreation & Sports$45kArts & Culture$39kHousing & Shelter$35kFood & Nutrition$30kHuman Services$18kOther$0
02FY2024 · 8 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k1 grant · $5k
  • $10k–50k7 grants · $100k
$10,000
Median grant
7
States reached
$2.8M
Total assets
Largest grants
RecipientAmount
JOHNS HOPKINS HOSPITAL$40,000
JEWISH FEDERATION FOUNDATION$10,000
ADL$10,000
BEST FRIENDS ANIMAL SOCIETY$10,000
Individual grant recipient$10,000
SIDWELL FRIENDS SCHOOL$10,000
Individual grant recipient$10,000
CAMP YAVNEH$5,000
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 (FY17–23, $18k) land where the poverty rate runs at 16%, 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%CRADLES TO CRAYONS: $3k → 16%CRADLES TO CRAYONS: $3k → 16%CRADLES TO CRAYONS: $3k → 16%CRADLES TO CRAYONS: $3k → 16%CRADLES TO CRAYONS: $3k → 16%CRADLES TO CRAYONS: $3k → 16%CRADLES TO CRAYONS: $3k → 16%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

NH
NY
MA
RI
CA
UT
MD
DC
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.

90%of every dollar goes to organizations it has funded before.
$801k · 25 repeat orgs$87k to everyone else

Grantees it renews have grown median revenue +85% since the first grant, against +18% for those funded once.

25 repeat relationships: 4 still active in FY2024, 21 since wound down; 3 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

25
9

Total granted

$801k
$57k

Median revenue growth · since first grant

+85%
+18%

Still filing today

44%
33%

New vs renewed · share of each year

In FY2024, 68% of grant dollars renewed an existing relationship; $30k went to new ones.

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

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

’17’18’19’20’21’22’23’24
HealthArts & CultureHousing & ShelterHuman ServicesEducationAnimalsOther
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

  • TJ
    THE JOHNS HOPKINS HOSPITAL
    8× · 2017–2024 · $140k · revenue +58%
  • RP
    ROSIE'S PLACE INC
    7× · 2017–2023 · $35k · revenue +93%
  • CY
    CAMP YAVNEH INC
    7× · 2017–2024 · $25k · revenue +85%

Funded once

  • JA
    JEWISH ALLIANCE OF RI
    one grant, 2017 · $25k
  • SM
    SIBLEY MEMORIAL HOSPITAL
    one grant, 2017 · $10k
  • PF
    PARTNERSHIP FOR AFTERSCHOOL EDUCATI
    one grant, 2022 · $10k
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
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
2
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
3
New York University

Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.

Education
4
Mass General Brigham Incorporated & Affiliates Group Return

Mass general brigham incorporated is developing an integrated health care delivery system throughout the region that offers patients a continuum of coordinated, high-quality care.

Health
5
The Broad Institute Inc

The mission of the broad institute is to propel progress in biomedicine, through research aimed at the understanding and treatment of disease and the dissemination of scientific knowledge to the scientific community to benefit the public.…

Health
6
Lowell Observatory

The mission of lowell observatory is to pursue the study of astronomy, especially the study of our solar system and its evolution; to conduct pure research in astronomical phenomena; and to maintain quality public education and outreach…

Science & Tech
7
The Children's Hospital of Philadelphia

The children's hospital of philadelphia, the oldest hospital in the united states dedicated exclusively to pediatrics, strives to be the world leader in the advancement of health care for children by integrating excellent patient care,…

Health
8
Massachusetts Eye & Ear Infirmary

THE MASSACHUSETTS EYE AND EAR INFIRMARY ("THE INFIRMARY") IS A NOT-FOR-PROFIT TEACHING HOSPITAL CONDUCTING PATIENT CARE AND RESEARCH. THE INFIRMARY IS A TEACHING HOSPITAL OF HARVARD MEDICAL SCHOOL AND AN INTERNATIONAL CENTER FOR RESEARCH.…

Health
9
Massachusetts Institute of Technology

The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.

Education
10
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
11
Trustees of Boston College

Mission strengthened by more than a century and a half of dedication to academic excellence, boston college commits itself to the highest standards of teaching and research in undergraduate, graduate and professional programs and to the…

Education
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 Cradles to Crayons Inc; the most unlike its peers is Boston Symphony Orchestra 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

17 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. 17 of the 39 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.

1
Load-bearing (≥25% of a budget)
5
Early backer (in before they grew)
17/17
Grantees still filing
13/17
Grew since first funded

Where the money sits, by cause and then by grantee

Individual grant recipient: $185,000 · OtherIndividual grant recipientJEWISH COMMUNITY DAY SCHOOL: $75,000 · OtherJEWISH COMMUNITY DAY SCHOOLJFCS: $35,000 · OtherJFCSBOSTON FOOD BANK: $30,000 · OtherPROVIDENCE HEBREW DAY SCHOOL: $27,500 · OtherJEWISH ALLIANCE OF RI: $25,000 · OtherCAMP YAVNEH INC: $24,500 · OtherIndividual grant recipient: $22,500 · Other+18 more: $184,900 · Other+18 moreJEWISH FEDERATION FOUNDATION OF GREATER RHODE ISLAND: $185,000 · PhilanthropyJEWISH FEDERATIO…THE JOHNS HOPKINS HOSPITAL: $140,000 · HealthTHE JOHNS HOPKI…Children's Hospital Corporation: $17,500 · HealthChildren's Hosp…CELIAC DISEASE FOUNDATION: $7,000 · HealthMOTHERS' MILK BANK NORTHEAST INC: $7,000 · HealthBRANDEIS UNIVERSITY: $165,000 · EducationBRANDEIS UNIVER…+1 more: $1,000 · EducationBOSTON SYMPHONY ORCHESTRA INC: $20,000 · Arts & CultureMUSEUM OF FINE ARTS: $17,500 · Arts & CultureMUSEUM OF SCIENCE: $6,000 · Arts & CultureROSIE'S PLACE INC: $35,000 · Housing & ShelterCRADLES TO CRAYONS INC: $17,500 · Human ServicesBEST FRIENDS ANIMAL SOCIETY: $10,000 · Animals
Other$609,400Philanthropy$185,000Health$171,500Education$166,000Arts & Culture$43,500Housing & Shelter$35,000Human Services$17,500Animals$10,000

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 budgetJEWISH FEDERATION FOUNDATION OF GREATER RHODE ISLAND: $185,000 over 7y, 0.9% of budgetBRANDEIS UNIVERSITY: $165,000 over 7y, 0.0% of budgetTHE JOHNS HOPKINS HOSPITAL: $140,000 over 8y, 0.0% of budgetROSIE'S PLACE INC: $35,000 over 7y, 0.0% of budgetCAMP YAVNEH INC: $24,500 over 7y, 0.4% of budgetHOPE: $20,000 over 2y, 68% of budgetBOSTON SYMPHONY ORCHESTRA INC: $20,000 over 7y, 0.0% of budgetChildren's Hospital Corporation: $17,500 over 7y, 0.0% of budgetMUSEUM OF FINE ARTS: $17,500 over 7y, 0.0% of budgetCRADLES TO CRAYONS INC: $17,500 over 7y, 0.0% of budgetBEST FRIENDS ANIMAL SOCIETY: $10,000 over 1y, 0.0% of budgetCELIAC DISEASE FOUNDATION: $7,000 over 7y, 0.1% of budgetMOTHERS' MILK BANK NORTHEAST INC: $7,000 over 7y, 0.1% of budgetMUSEUM OF SCIENCE: $6,000 over 7y, 0.0% of budgetTHE DC CENTRAL KITCHEN INC: $5,000 over 1y, 0.0% of budgetTHE LITERACY LAB: $1,000 over 1y, 0.0% of budgetSPECIAL OLYMPICS RHODE ISLAND INC: $100 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.

  • Who funds JEWISH FEDERATION FOUNDATION OF GREATER RHODE ISLAND ↗
  • Who funds BRANDEIS UNIVERSITY ↗
  • Who funds THE JOHNS HOPKINS HOSPITAL ↗
  • Who funds ROSIE'S PLACE INC ↗
  • Who funds CAMP YAVNEH INC ↗
  • Who funds HOPE ↗
  • Who funds BOSTON SYMPHONY ORCHESTRA INC ↗
  • Who funds Children's Hospital Corporation ↗
  • Who funds MUSEUM OF FINE ARTS ↗
  • Who funds CRADLES TO CRAYONS INC ↗
  • Who funds BEST FRIENDS ANIMAL SOCIETY ↗
  • Who funds CELIAC DISEASE FOUNDATION ↗
  • Who funds MOTHERS' MILK BANK NORTHEAST INC ↗
  • Who funds MUSEUM OF SCIENCE ↗
  • Who funds THE DC CENTRAL KITCHEN INC ↗
  • Who funds THE LITERACY LAB ↗
  • Who funds SPECIAL OLYMPICS RHODE ISLAND 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.

Jewish Communal FundNY12× affinity4 shared granteesties to 5 of 5Hover any node to trace its alignments.Compare side by side →

Open a dossier: Jewish Communal Fund · National Philanthropic Trust · Donor Advised Charitable Giving Inc · American Online Giving Foundation 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 Samuel Rapaporte Jr Foundation funds: left to right is the share of its income from government, bottom to top the share from Samuel Rapaporte Jr Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%5%19%42%75%funder's share of their income ↑0%6%13%19%25%share of the org’s income from government →median 0%
  • Children's Hospital Corporation: 10% of income from government
  • Brandeis University: 9% of income from government
  • Cradles to Crayons Inc: 2% of income from government
  • Boston Symphony Orchestra Inc: 0% of income from government
  • Museum of Science: 0% of income from government
  • Museum of Fine Arts: 0% of income from government
  • Rosie's Place Inc: 0% of income from government
  • The Johns Hopkins Hospital: 0% of income from government
no gov moneyreceives it· size = income
2get no government money at all
2report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–25%
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 Samuel Rapaporte Jr Foundation?

Find your warmest path to Samuel Rapaporte Jr 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.

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 39 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 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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