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The Sidman Family Foundation Inc at a glance

· Private foundation

The Sidman Family Foundation Inc

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.

$1.4M
Granted FY2025still arriving
47
Grants FY2025still arriving
11
States reached
$347k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0196% classified

What it funded, over time

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

Health$5.2MPhilanthropy$2.6MEducation$2.1MHuman Services$1.1MReligion$528kRecreation & Sports$489kArts & Culture$440kScience & Tech$154kOther$0
02FY2025 · 47 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k24 grants · $56k
  • $10k–50k16 grants · $361k
  • $50k–250k5 grants · $420k
  • $250k+2 grants · $597k
$5,400
Median grant
11
States reached
$7.0M
Total assets
Largest grants
RecipientAmount
DUKE UNIVERSITY$347,000
COMBINED JEWISH PHILANTHROPIES$250,000
BELMONT HILL SCHOOL$100,000
JEWISH COMMUNAL FUND$100,000
COMBINED JEWISH PHILANTHROPIES$100,000
COMBINED JEWISH PHILANTHROPIES$70,000
TEMPLE EMANUEL$50,000
FRIENDS OF THE PUBLIC GARDEN$40,000
JEWISH FEDERATION OF PALM BEACH$37,000
THE BOSTON FOUNDATION$33,000
JCC OF GREATER BOSTON$25,000
BROTHERS FOR LIFE$25,000
ADL$25,000
TEAM IMPACT$25,000
BROTHERS FOR LIFE$25,000
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 (FY17–25, $1.0M) land where the poverty rate runs at 11%, against an area that typically sits at 11%. 37% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 11%CAMP KESEM: $1k → 14%YOUTH VILLAGES: $5k → 17%JCC ASSOCIATION OF NORTH AMERICA: $26k → 17%WIDE HORIZONS FOR CHILDREN: $8k → 8%WIDE HORIZONS FOR CHILDREN: $8k → 8%YOUTH VILLAGES: $3k → 8%ROOM TO GROW NATIONAL: $1k → 17%JCC GREATER BOSTON: $315k → 8%JCC GREATER BOSTON: $197k → 8%JCC GREATER BOSTON: $100k → 8%JCC GREATER BOSTON: $10k → 8%MOUNT SINAI HEALTH SYSTEM: $1k → 17%MOUNT SINAI HEALTH SYSTEM: $500 → 17%HILL HOUSE: $3k → 16%HILL HOUSE: $2k → 16%CRADLES TO CRAYONS: $20k → 16%HILL HOUSE: $2k → 16%CRADLES TO CRAYONS: $20k → 16%HILL HOUSE: $2k → 16%CRADLES TO CRAYONS: $20k → 16%HILL HOUSE: $2k → 16%CRADLES TO CRAYONS: $20k → 16%HILL HOUSE: $2k → 16%CRADLES TO CRAYONS: $20k → 16%HILL HOUSE: $2k → 16%CRADLES TO CRAYONS: $5k → 16%HILL HOUSE: $1k → 16%CRADLES TO CRAYONS: $5k → 16%HILL HOUSE: $1k → 16%SOCIAL FINANCE: $200k → 16%SOCIAL FINANCE: $25k → 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

ME
NH
WA
IL
MI
NY
MA
OH
PA
NJ
CA
NE
MD
DE
TN
NC
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.
04

Where the work is directed

The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.

About 10% of The Sidman Family Foundation Inc’s grant dollars are earmarked for a different county than the recipient’s own address. By recipient address, 77% of the giving stays in MA; by stated purpose, 73%.

The Sidman Family Foundation Inclessmore of its giving
Placed by recipient address · 4.8% directed abroad (not shown)
How this is measured
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the funder’s own 990 grant descriptions.
03Its grantees
repeat funding

Who it funds again

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

95%of every dollar goes to organizations it has funded before.
$10M · 75 repeat orgs$560k to everyone else

Grantees it renews have grown median revenue +55% since the first grant, against +20% for those funded once.

75 repeat relationships: 27 still active in FY2025, 48 since wound down; 7 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

75
87

Total granted

$10M
$528k

Median revenue growth · since first grant

+55%
+20%

Still filing today

69%
52%

New vs renewed · share of each year

In FY2025, 96% of grant dollars renewed an existing relationship; $32k 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
EducationHealthArts & CultureHuman ServicesPhilanthropyRecreation & SportsOther
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

  • CH
    Children's Hospital Corporation
    5× · 2018–2023 · $1.4M · revenue +78%
  • UO
    University of Michigan
    3× · 2020–2024 · $1.4M · revenue +139%
  • JC
    JEWISH COMMUNITY CENTERS OF GREATER BOSTON
    4× · 2018–2021 · $622k · revenue +5%

Funded once

  • BC
    BOSTON CHILDREN'S HOPSITAL TRUST
    one grant, 2017 · $100k
  • TB
    The Broad Institute Incgraduated
    one grant, 2017 · $100k · revenue +95%
  • JA
    JEWISH ARTS COLLABORATIVE INC
    one grant, 2017 · $50k · revenue -61%
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
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
2
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
3
Trustees of Boston University

Organization's mission: boston university is an international, comprehensive, private research university, committed to educating students to be reflective, resourceful individuals ready to live, adapt, and lead in an interconnected world.…

—
4
President and Fellows of Harvard College

Undergraduate, graduate, and professional education and research across a broad array of academic domains.

Education
5
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
6
The Trustees of Princeton University

Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…

Education
7
Bar Ilan University in Israel Inc

Biu produces students who excel in the sciences, humanities, law, engineering, business & the arts.

—
8
University of New Haven

The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…

Education
9
The Baruch College Fund

The baruch college fund is an organization engaged in generating, encouraging and promoting the educational welfare of the students of the bernard m. baruch college of the city university of new york.

Education
10
Fordham University

Fordham university, the jesuit university of new york, is committed to the discovery of wisdom and the transmission of learning, through research and through education of the highest quality. for more information, see schedule o.

Education
11
Albert Einstein College of Medicine

Committed to exceptional healthcare quality for all and actively engaged with our community, einstein drives scientific discovery and educates compassionate leaders in health and science.

Education
12
Metropolitan Jewish Health System Inc

Mjhs health system is a charitable not-for-profit established to support the activities of affiliated organizations. mjhs is built on the core values of compassion, dignity and respect, first established by the four brooklyn ladies in…

Health
How this is measured
The grantee most central to the portfolio’s shape is Jewish Family & Children's Service Inc; the most unlike its peers is Israel Lacrosse Association Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
05the grantee network

110 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. 110 of the 177 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)
17
Early backer (in before they grew)
109/110
Grantees still filing
79/110
Grew since first funded

Where the money sits, by cause and then by grantee

University of Michigan: $1,350,000 · OtherUniversity of MichiganMASS GENERAL BRIGHAM INCORPORATED: $1,064,750 · OtherMASS GENERAL BRIGHAM INCORPORATEDJCC OF GREATER BOSTON: $435,000 · OtherJCC OF GREATER BOSTONTEMPLE EMANUEL: $340,040 · OtherTEMPLE EMANUELJCCA: $244,250 · OtherUNITED WAY OF MA BAY: $164,500 · Other+100 more: $1,159,779 · Other+100 moreCombined Jewish Philanthropies of Greater Boston Inc: $2,049,650 · PhilanthropyCombined Jewish Philanth…TEAM IMPACT INC: $364,000 · PhilanthropyTEAM IMPACT INCBoston Foundation Inc: $118,000 · PhilanthropyJEWISH COMMUNAL FUND: $100,000 · Philanthropy+11 more: $184,480 · Philanthropy+11 moreBELMONT HILL SCHOOL INC: $585,000 · EducationBELMONT HILL SCHO…DUKE UNIVERSITY: $522,000 · EducationDUKE UNIVERSITYBUCKINGHAM BROWNE & NICHOLS SCHOOL: $478,333 · EducationBUCKINGHAM BROWNE…THE BEAVER COUNTRY DAY SCHOOL INC: $350,000 · EducationTHE BEAVER COUNTR…TRUSTEES OF THAYER ACADEMY INC: $70,000 · Education+12 more: $73,000 · EducationChildren's Hospital Corporation: $1,400,000 · HealthChildren's Hospi…BOSTON COMMUNITY PEDIATRICS INC: $225,500 · HealthBOSTON COMMUNITY…The Broad Institute Inc: $100,000 · HealthPLANNED PARENTHOOD LEAGUE OF MASSACHUSETTS INC: $95,000 · Health+10 more: $72,600 · HealthJEWISH COMMUNITY CENTERS OF GREATER BOSTON: $622,360 · Human ServicesSocial Finance Inc: $225,000 · Human ServicesCRADLES TO CRAYONS INC: $110,000 · Human Services+7 more: $65,250 · Human ServicesESPLANADE ASSOCIATION INC: $255,200 · Arts & CultureBrothers for Life: $60,000 · Arts & CultureMETROPOLITAN MUSEUM OF ART: $25,000 · Arts & Culture+11 more: $44,500 · Arts & CultureFRIENDS OF THE PUBLIC GARDEN INC: $152,500 · Environment
Other$4,758,319Philanthropy$2,816,130Education$2,078,333Health$1,893,100Human Services$1,022,610Arts & Culture$384,700Environment$152,500

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 budgetCombined Jewish Philanthropies of Greater Boston Inc: $2,049,650 over 7y, 0.1% of budgetChildren's Hospital Corporation: $1,400,000 over 5y, 0.0% of budgetUniversity of Michigan: $1,350,000 over 3y, 21% of budgetJEWISH COMMUNITY CENTERS OF GREATER BOSTON: $622,360 over 4y, 1.4% of budgetBELMONT HILL SCHOOL INC: $585,000 over 5y, 0.4% of budgetDUKE UNIVERSITY: $522,000 over 8y, 0.0% of budgetBUCKINGHAM BROWNE & NICHOLS SCHOOL: $478,333 over 7y, 0.3% of budgetTEAM IMPACT INC: $364,000 over 9y, 1.1% of budgetTHE BEAVER COUNTRY DAY SCHOOL INC: $350,000 over 5y, 0.3% of budgetESPLANADE ASSOCIATION INC: $255,200 over 7y, 2.2% of budgetBOSTON COMMUNITY PEDIATRICS INC: $225,500 over 6y, 6.1% of budgetSocial Finance Inc: $225,000 over 2y, 0.3% of budgetFRIENDS OF THE PUBLIC GARDEN INC: $152,500 over 7y, 0.8% of budgetBoston Foundation Inc: $118,000 over 8y, 0.0% of budgetMASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $113,635 over 9y, 0.0% of budgetCRADLES TO CRAYONS INC: $110,000 over 7y, 0.1% of budgetThe Broad Institute Inc: $100,000 over 1y, 0.0% of budgetJEWISH COMMUNAL FUND: $100,000 over 1y, 0.0% of budgetPLANNED PARENTHOOD LEAGUE OF MASSACHUSETTS INC: $95,000 over 9y, 0.1% of budgetTRUSTEES OF THAYER ACADEMY INC: $70,000 over 3y, 0.1% of budgetMORSELIFE HEALTH SYSTEM INC: $65,600 over 5y, 0.4% of budgetHebrew Senior Life Inc: $63,500 over 7y, 0.1% of budgetBrothers for Life: $60,000 over 2y, 0.1% of budgetJEWISH ARTS COLLABORATIVE INC: $50,100 over 1y, 5.0% of budgetGREATER BOSTON FOOD BANK INC: $50,000 over 1y, 0.0% of budgetJEWISH FEDERATION OF PALM BEACH COUNTY INC: $49,000 over 2y, 0.1% of budgetBOYS & GIRLS CLUBS OF BOSTON INC: $41,000 over 4y, 0.1% of budgetPAN-MASSACHUSETTS CHALLENGE INC: $34,450 over 8y, 0.0% of budgetCITYMEALS-ON-WHEELS: $33,500 over 4y, 0.1% of budgetTRIBECA FILM INSTITUTE INC: $32,000 over 2y, 0.8% of budgetJEWISH RESOURCE CENTER: $27,500 over 2y, 0.2% of budgetJEWISH COMMUNITY CENTERS ASSOCIATION OF NORTH AMERICA: $25,500 over 1y, 0.2% of budgetOne Summit Inc: $25,000 over 5y, 1.4% of budgetMETROPOLITAN MUSEUM OF ART: $25,000 over 1y, 0.0% of budgetBRANDEIS UNIVERSITY: $25,000 over 2y, 0.0% of budgetTown of Palm Beach United Way Inc: $24,000 over 3y, 0.1% of budgetISRAEL LACROSSE ASSOCIATION INC: $21,000 over 3y, 1.3% of budgetWOMEN'S FOUNDATION OF MASSACHUSETTS INC: $20,000 over 3y, 0.3% of budgetAMERICAN FRIENDS OF MAOZ-SEAL INC: $20,000 over 1y, 0.4% of budgetBILL BELICHICK FOUNDATION INC: $20,000 over 2y, 1.4% of budgetEB RESEARCH PARTNERSHIP INC: $20,000 over 2y, 0.2% of budgetFRIENDS OF THE ISRAEL DEFENSE FORCES: $20,000 over 2y, 0.0% of budgetFRIENDS OF HAGAL SHELI INC: $18,000 over 1y, 0.5% of budgetWIDE HORIZONS FOR CHILDREN INC: $15,000 over 2y, 0.2% of budgetEMERALD NECKLACE CONSERVANCY INC: $14,800 over 4y, 0.3% of budgetHILL HOUSE INC: $13,750 over 9y, 0.2% of budgetFACING HISTORY & OURSELVES INC: $11,000 over 2y, 0.0% of budgetSTEPPINGSTONE FOUNDATION INC: $10,250 over 2y, 0.1% 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 Combined Jewish Philanthropies of Greater Boston Inc ↗
  • Who funds Children's Hospital Corporation ↗
  • Who funds University of Michigan ↗
  • Who funds JEWISH COMMUNITY CENTERS OF GREATER BOSTON ↗
  • Who funds BELMONT HILL SCHOOL INC ↗
  • Who funds DUKE UNIVERSITY ↗
  • Who funds BUCKINGHAM BROWNE & NICHOLS SCHOOL ↗
  • Who funds TEAM IMPACT INC ↗
  • Who funds THE BEAVER COUNTRY DAY SCHOOL INC ↗
  • Who funds ESPLANADE ASSOCIATION INC ↗
  • Who funds BOSTON COMMUNITY PEDIATRICS INC ↗
  • Who funds Social Finance Inc ↗
  • Who funds FRIENDS OF THE PUBLIC GARDEN INC ↗
  • Who funds Boston Foundation Inc ↗
  • Who funds MASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS ↗
  • Who funds CRADLES TO CRAYONS INC ↗
  • Who funds The Broad Institute Inc ↗
  • Who funds JEWISH COMMUNAL FUND ↗
  • Who funds PLANNED PARENTHOOD LEAGUE OF MASSACHUSETTS INC ↗
  • Who funds TRUSTEES OF THAYER ACADEMY INC ↗
  • Who funds MORSELIFE HEALTH SYSTEM INC ↗
  • Who funds Hebrew Senior Life Inc ↗
  • Who funds Brothers for Life ↗
  • Who funds JEWISH ARTS COLLABORATIVE INC ↗
  • Who funds GREATER BOSTON FOOD BANK INC ↗
  • Who funds JEWISH FEDERATION OF PALM BEACH COUNTY INC ↗
  • Who funds BOYS & GIRLS CLUBS OF BOSTON INC ↗
  • Who funds PAN-MASSACHUSETTS CHALLENGE INC ↗
  • Who funds CITYMEALS-ON-WHEELS ↗
  • Who funds TRIBECA FILM INSTITUTE 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.

Combined Jewish Phila…Boston Foundation IncEastern Bank Foundati…Cummings Foundation G…Richard K Lubin Famil…The Klarman Family Fo…American Tower Corpor…The Beker FoundationGivenGain Foundation …Fiduciary Charitable …Fidelity FoundationFine Family Charitabl…
Combined Jewish Philanthropies of Greater Boston IncMA48× affinity24 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Combined Jewish Philanthropies of Greater Boston Inc · Boston Foundation Inc · Eastern Bank Foundation · Cummings Foundation Grants Inc (Fka Oneworld Boston Inc) · Richard K Lubin Family Foundation · The Klarman Family Foundation · American Tower Corporation Foundation Inc · The Beker Foundation · GivenGain Foundation USA · Fiduciary Charitable Foundation Dba Fiduciary Trust Charitable · Fidelity Foundation · Fine Family Charitable 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 Sidman Family Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from The Sidman Family Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 350%6%25%56%100%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 2%
  • Boston Medical Center Corporation: 23% of income from government
  • Greater Boston Food Bank Inc: 22% of income from government
  • The Broad Institute Inc: 19% of income from government
  • Trustees of Tufts College: 13% of income from government
  • New England Aquarium Corporation: 12% of income from government
  • Social Finance Inc: 12% of income from government
  • Boston Community Pediatrics Inc: 10% of income from government
  • Children's Hospital Corporation: 10% of income from government
  • Brandeis University: 9% of income from government
  • Perkins School for the Blind: 7% of income from government
  • Whitehead Institute for Biomedical Research: 7% of income from government
  • Dana-Farber Cancer Institute Inc: 7% of income from government
  • Huntington Theatre Co Inc: 4% of income from government
  • Planned Parenthood League of Massachusetts Inc: 3% of income from government
  • Cradles to Crayons Inc: 2% of income from government
  • Artists for Humanity Inc: 2% of income from government
  • Boys & Girls Clubs of Boston Inc: 2% of income from government
  • The Childrens Museum: 1% of income from government
  • Jewish Family & Children's Service Inc: 1% of income from government
  • The Institute of Contemporary Art Inc: 1% of income from government
  • Wellesley College: 1% of income from government
  • Boston Youth Symphony Orchestras Inc: 1% of income from government
  • Friends of the Public Garden Inc: 1% of income from government
  • Emerald Necklace Conservancy Inc: 0% of income from government
  • Museum of Science: 0% of income from government
  • Hebrew Senior Life Inc: 0% of income from government
  • Rosie's Place Inc: 0% of income from government
  • Pan-Massachusetts Challenge Inc: 0% of income from government
  • Steppingstone Foundation Inc: 0% of income from government
  • Buckingham Browne & Nichols School: 0% of income from government
  • Boston Foundation Inc: 0% of income from government
no gov moneyreceives it· size = income
35get no government money at all
16report government grants on their 990 we could not trace to a source (not plotted)
0rely 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 The Sidman Family Foundation Inc?

Find your warmest path to The Sidman Family Foundation Inc 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 177 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

Play a game based on Sidman Family’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