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· 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 you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
05Through PlinthRead
01What you fund
0196% classified

What you funded, over time

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

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

Your grants by size, and where they go.

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
COMBINED JEWISH PHILANTHROPIES$100,000
JEWISH COMMUNAL FUND$100,000
BELMONT HILL SCHOOL$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
ADL$25,000
BROTHERS FOR LIFE$25,000
BROTHERS FOR LIFE$25,000
JCC OF GREATER BOSTON$25,000
BOSTON COMMUNITY PEDIATRICS$25,000
02The need
03

Do your dollars go where the need is?

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

show:

Your 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. Your 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

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

Which US states your grants reach

ME
NH
WA
IL
MI
NY
MA
OH
PA
NJ
CA
NE
MD
DE
TN
NC
GA
TX
FL

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

04

Where the work is directed

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

About 10% of The Sidman Family Foundation Inc’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another. Read by recipient address, 77% of the giving stays in MA; read by stated purpose it is 73% — less of the work is directed home than the recipients' locations suggest.

The Sidman Family Foundation Inclessmore of its giving
Placed by recipient address · 4.8% directed abroad (not shown)

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 foundation’s own 990 grant descriptions.

03Your edge
repeat funding

Who you back again

Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.

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

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +55% since the first grant, against +18% for the ones you 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%
+18%

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

First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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 +57%
  • 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

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

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

04Your field

The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — 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

For reference, the grantee most central to the portfolio’s shape is Jewish Family & Children's Service Inc and 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.

For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.

← shrinkinggrowing →↓ leaning in → pulling backsteadyIndependent K-12 SchoolsHealth Access Advocacy and …Environmental Conservation …Jewish Community Organizati…United Way AffiliatesWomen & Girls Leadership De…Youth Sports ProgramsYouth Development CentersCommunity Foundations
the sector your giving your giving is ahead of the sector the sector’s ahead of you· dot size = how much the theme matters to each side
Ordered by the change in your giving — leaning in on top, pulling back at the bottom. The bar between the two dots is how out of step you are with the sector. Hover any row for detail.

Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.

Your grantees are a median of 36 years old; the field is 17. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number20%1%<5yr14%5%5–10yr20%18%10–20yr19%23%20–35yr14%21%35–55yr14%33%55yr+
THE FIELDby orgYOUR MONEYby value20%0%<5yr14%2%5–10yr20%17%10–20yr19%6%20–35yr14%35%35–55yr14%39%55yr+

The field is 20% startups (under 5 years old) — 1% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close — 0.8% lost their exemption, against 11% of the field you don’t fund.

orgs you fund
0.8%1/120
the rest of the field
11%
4,714/42,238

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

05the grantee network

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

Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.

Counted here: distinct organizations you funded across 2017–2025, 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; the rest are funded organizations whose filings we could not track year by year.

1
Load-bearing (≥25% of a budget)
17
Early backer (in before they grew)
109/110
Grantees still filing
79/110
Grew since you first funded

Where your money sits — by cause, 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 org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ your 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 budgetBRANDEIS UNIVERSITY — $25,000 over 2y, 0.0% of budgetOne Summit Inc — $25,000 over 5y, 1.4% of budgetMETROPOLITAN MUSEUM OF ART — $25,000 over 1y, 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 budgetFRIENDS OF THE ISRAEL DEFENSE FORCES — $20,000 over 2y, 0.0% of budgetEB RESEARCH PARTNERSHIP INC — $20,000 over 2y, 0.2% of budgetBILL BELICHICK FOUNDATION INC — $20,000 over 2y, 1.4% of budgetAMERICAN FRIENDS OF MAOZ-SEAL INC — $20,000 over 1y, 0.4% 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
Go grantee by grantee — a decade per org, and how each moved after you funded them

A decade per grantee — revenue shaded, your 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 ↗

The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — 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

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.

Government reliance of your grantees

Every dot is one organization The Sidman Family Foundation Inc funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.

2024
’20’21’22’23’24’25
no gov · 350%6%25%56%100%your 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

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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 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 directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 177 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your 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. How we build these →

Generated from your IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

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