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William S and Blair y Thompson Family Foundation at a glance

· Private foundation

William S and Blair y Thompson 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.

$107k
Granted FY2025still arriving
85
Grants FY2025still arriving
15
States reached
$10k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2018 to 2025.

Education$181kFood & Nutrition$94kHealth$83kAnimals$62kPhilanthropy$60kInternational$56kHuman Services$46kArts & Culture$37kOther$0
02FY2025 · 85 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k84 grants · $97k
  • $10k–50k1 grant · $10k
$500
Median grant
15
States reached
$660k
Total assets
Largest grants
RecipientAmount
UNITED WAY OF GREATER ST LOUIS$10,000
ST LOUIS AREA FOODBANK$5,000
OPERATION FOOD SEARCH$5,000
FOOD OUTREACH INC$5,000
FOXCROFT SCHOOL$5,000
AMERICAN RED CROSS (ST LOUIS CHAPTER)$3,000
WASHINGTON UNIVERSITY$3,000
MICDS$3,000
DOCTORS WITHOUT BORDERS USA$3,000
LATIN SCHOOL OF CHICAGO$3,000
100 NEEDIEST CASES$2,500
BE LIKE BRIT FOUNDATION$2,500
ST LOUIS ART MUSEUM FOUNDATION$2,500
SHRINERS CHILDREN'S$2,500
CONNECTICUT COLLEGE$2,500
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 (FY18–25, $29k) land where the poverty rate runs at 11%, against an area that typically sits at 11%. 27% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 11%BOYS TOWN: $300 → 12%WOUNDED WARRIOR PROJECT: $1k → 14%BOYS TOWN: $300 → 12%WOUNDED WARRIOR PROJECT: $1k → 14%BOYS TOWN: $300 → 12%WOUNDED WARRIOR PROJECT: $1k → 14%BOYS TOWN: $300 → 12%WOUNDED WARRIOR PROJECT: $1k → 14%BOYS TOWN: $250 → 12%WOUNDED WARRIOR PROJECT: $800 → 14%WOUNDED WARRIOR PROJECT: $500 → 14%WOUNDED WARRIOR PROJECT: $500 → 14%ONE HEART FAMILY MINISTRIES INC: $3k → 11%THE CRADLE FOUNDATION: $250 → 14%THE CRADLE FOUNDATION: $250 → 14%ONE HEART FAMILY MINISTRIES INC: $2k → 11%THE CRADLE FOUNDATION: $100 → 14%ONE HEART FAMILY MINISTRIES INC: $2k → 11%ONE HEART FAMILY MINISTRIES INC: $1k → 11%ONE HEART FAMILY MINISTRIES INC: $800 → 11%ONE HEART FAMILY MINISTRIES INC: $250 → 11%JEWISH COMMUNITY CENTER: $500 → 11%PROMISE COMMUNITY HOMES: $500 → 11%PROMISE COMMUNITY HOMES: $500 → 11%PROMISE COMMUNITY HOMES: $500 → 11%PROMISE COMMUNITY HOMES: $250 → 11%PROMISE COMMUNITY HOMES: $250 → 11%ST LOUIS LEARNING DISABILITIES ASSOC: $1k → 11%ST LOUIS LEARNING DISABILITIES ASSOC: $1k → 11%ST LOUIS LEARNING DISABILITIES ASSOC: $1k → 11%ST LOUIS LEARNING DISABILITIES ASSOC: $1k → 11%ST LOUIS LEARNING DISABILITIES ASSOC: $1k → 11%ST LOUIS LEARNING DISABILITIES ASSOC: $1k → 11%MAKE A WISH FOUNDATION MISSOURI & KANSAS: $500 → 11%MAKE A WISH FOUNDATION MISSOURI & KANSAS: $500 → 11%MAKE A WISH FOUNDATION MISSOURI & KANSAS: $500 → 11%MAKE A WISH FOUNDATION MISSOURI & KANSAS: $500 → 11%MAKE A WISH FOUNDATION MISSOURI & KANSAS: $500 → 11%ST LOUIS LEARNING DISABILITIES ASSOC: $500 → 11%MAKE A WISH FOUNDATION MISSOURI & KANSAS: $500 → 11%MAKE A WISH FOUNDATION MISSOURI: $500 → 11%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
IL
NY
MA
NJ
CT
CA
NE
MO
VA
MD
AR
TN
DC
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 5% of William S and Blair y Thompson Family Foundation’s grant dollars are earmarked for a different county than the recipient’s own address.

William S and Blair y Thompson Family Foundationlessmore of its giving
Placed by recipient address · 5.1% 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.

98%of every dollar goes to organizations it has funded before.
$678k · 106 repeat orgs$13k to everyone else

Grantees it renews have grown median revenue +34% since the first grant, against +33% for those funded once.

106 repeat relationships: 79 still active in FY2025, 27 since wound down; 4 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

106
20

Total granted

$678k
$12k

Median revenue growth · since first grant

+34%
+33%

Still filing today

73%
60%

New vs renewed · share of each year

In FY2025, 99% of grant dollars renewed an existing relationship; $1k went to new ones.

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

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

’18’20’21’22’23’24’25
EducationHealthArts & CultureHuman ServicesAnimalsEnvironmentOther
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

  • SL
    ST LOUIS AREA FOOD BANK INC
    7× · 2018–2025 · $36k · revenue +19%
  • OF
    OPERATION FOOD SEARCH INC
    7× · 2018–2025 · $30k · revenue +13%
  • TL
    THE LATIN SCHOOL OF CHICAGO
    7× · 2018–2025 · $25k · revenue +23%

Funded once

  • SF
    SMU FUND
    one grant, 2020 · $3k
  • TC
    THE CHURCHILL SCHOOL
    one grant, 2018 · $2k
  • UO
    UNIVERSITY OF MISSOURI - TIGER SCHOLARSHIP FUND 2017
    one grant, 2018 · $2k
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
The Saint Louis Zoo Association

The saint louis zoo association was established to support and enhance the saint louis zoo by providing facilities, funds, and advice. the association provides direct financial support to the zoo for renovations, new facilities, programs,…

Animals
2
United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

—
3
Webster University

Founded in 1915, webster is a private non-profit and global university that is committed to delivering high-quality learning experiences that transform students for global citizenship and individual excellence.

Education
4
The Wildlife Society

The wildlife society's mission is to inspire, empower, and enable wildlife professionals to sustain wildlife populations and habitats through science-based management and conservation.

Animals
5
Federation of State Medical Boards of the United States Inc

The fsmb serves as the voice for state medical boards, supporting them through education, assessment, research and advocacy while providing services and initiatives that promote patient safety, quality health care and regulatory best…

Health
6
Furman University

The primary mission of furman as a liberal arts institution is to provide a distinctive education in fine arts, humanities, social sciences, mathematics and the sciences, as well as selected professional disciplines.

Education
7
University of the Sciences in Philadelphia

University of the sciences prepares students to become leaders, innovators, and skilled practitioners in the sciences, the health professions, and related disciplines. we deliver excellence in teaching, research, and service through a safe…

—
8
Society for Neuroscience

Sfn's mission is to: 1. advance the understanding of the brain and the nervous system by bringing together scientists of all segments of neuroscience, by facilitating the integration of research directed at all levels of biological…

Health
9
Internet Society Foundation

At the internet society foundation, we focus on funding initiatives that strengthen the internet in function and reach so that it can effectively serve all people. our work advances the vision of the internet society (isoc): the internet…

International
10
Npr Foundation

The npr foundation ("foundation") is organized and operated exclusively for the benefit of its sole supported organization, national public radio, inc. ("npr inc."). the foundation supports npr inc. through various activities such as…

—
11
American Association for the Advancement of Science

Advance science, engineering, and innovation throughout the world for the benefit of all. the world's largest multidisciplinary scientific society and a leading publisher of cutting-edge research through its science family of journals,…

Science & Tech
12
American Water Works Association

To promote public health, safety, and welfare through the improvement of the quality and quantity of drinking water and the development and furtherance of understanding of the problems relating thereto.

Public Benefit
How this is measured
The grantee most central to the portfolio’s shape is Make-a-Wish Foundation of Missouri and Kansas; the most unlike its peers is Father Flanagan's Boys' Home. 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

94 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. 94 of the 131 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)
12
Early backer (in before they grew)
93/94
Grantees still filing
73/94
Grew since first funded

Where the money sits, by cause and then by grantee

ST LOUIS AREA FOOD BANK INC: $35,500 · OtherST LOUIS AREA FOOD BANK INCSUSTENTARE INC (PROJETO ONCAFARI): $20,500 · OtherSUSTENTARE INC (PROJETO ONCAFARI)AMERICAN RED CROSS (ST LOUIS CHAPTER): $18,000 · OtherAMERICAN RED CROSS (ST LOUIS CHAPTER)ST LOUIS ZOO FRIENDS ASSOC: $17,500 · OtherST LOUIS ZOO FRIENDS ASSOCLYNN UNIVERSITY - ANNUAL GIVING FUND: $11,500 · OtherCHURCHILL CENTER & SCHOOL: $10,500 · OtherST LOUIS ART MUSEUM FOUNDATION: $15,500 · OtherST LOUIS ART MUSEUM FOUNDATION+76 more: $156,464 · Other+76 moreTHE LATIN SCHOOL OF CHICAGO: $25,000 · EducationTHE LATIN SCHOOL OF CHI…Foxcroft School: $23,000 · EducationFoxcroft SchoolMary Institute and St Louis Country Day School: $21,000 · EducationMary Institute and St L…MISSOURI STATE UNIVERSITY FOUNDATION: $20,500 · EducationMISSOURI STATE UNIVERSI…WASHINGTON UNIVERSITY: $20,500 · EducationWASHINGTON UNIVERSITYCONNECTICUT COLLEGE: $17,000 · EducationCONNECTICUT COLLEGESouthern Methodist University: $8,000 · EducationSouthern Methodist Univ…LYNN UNIVERSITY INC: $8,000 · EducationLYNN UNIVERSITY INC+6 more: $2,350 · EducationTHE FOUNDATION FOR BARNES-JEWISH HOSPITAL: $13,000 · HealthTHE FOUND…ST LOUIS CHILDREN'S HOSPITAL FOUNDATION: $12,500 · HealthST LOUIS …SHRINERS HOSPITALS FOR CHILDREN: $12,000 · HealthSHRINERS …ST JUDE CHILDREN'S RESEARCH HOSPITAL INC: $10,000 · HealthST JUDE C…MUSCULAR DYSTROPHY ASSOCIATION INC: $3,500 · HealthMUSCULAR …The Susan G Komen Breast Cancer Foundation Inc: $2,800 · HealthThe Ranken-Jordan Home For Convalescent Crippled Children: $2,000 · Health+4 more: $2,175 · HealthOPERATION FOOD SEARCH INC: $30,000 · Food & NutritionOPERATION…FOOD OUTREACH INC: $26,000 · Food & NutritionFOOD OUTR…+2 more: $788 · Food & NutritionUNITED WAY OF GREATER ST LOUIS INC: $51,500 · PhilanthropyUNITED WA…MARINE TOYS FOR TOTS FOUNDATION: $4,700 · PhilanthropyMARINE TO…+1 more: $100 · PhilanthropyMEDECINS SANS FRONTIERES USA INC: $17,500 · InternationalMEDECINS …BE LIKE BRIT FOUNDATION INC: $14,000 · InternationalBE LIKE B…OXFAM-AMERICA INC: $12,500 · InternationalOXFAM-AME…THE WATER PROJECT INC: $9,000 · InternationalTHE WATER…+3 more: $3,275 · International+3 moreHUMANE SOCIETY OF MISSOURI: $14,100 · AnimalsGREAT PLAINS CONSERVATION FOUNDATION: $5,500 · AnimalsONCAFARI INTERNATIONAL INC: $5,000 · AnimalsWORLD BIRD SANCTUARY: $3,400 · AnimalsTHE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $2,100 · AnimalsWildlife Rescue Center: $2,050 · Animals+3 more: $1,575 · Animals
Other$285,464Education$145,350Health$57,975Food & Nutrition$56,788Philanthropy$56,300International$56,275Animals$33,725

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 budgetUNITED WAY OF GREATER ST LOUIS INC: $51,500 over 7y, 0.0% of budgetST LOUIS AREA FOOD BANK INC: $35,500 over 7y, 0.0% of budgetOPERATION FOOD SEARCH INC: $30,000 over 7y, 0.0% of budgetFOOD OUTREACH INC: $26,000 over 6y, 0.2% of budgetTHE LATIN SCHOOL OF CHICAGO: $25,000 over 7y, 0.0% of budgetFoxcroft School: $23,000 over 7y, 0.0% of budgetMary Institute and St Louis Country Day School: $21,000 over 7y, 0.0% of budgetMISSOURI STATE UNIVERSITY FOUNDATION: $20,500 over 6y, 0.0% of budgetWASHINGTON UNIVERSITY: $20,500 over 7y, 0.0% of budgetMEDECINS SANS FRONTIERES USA INC: $17,500 over 7y, 0.0% of budgetCONNECTICUT COLLEGE: $17,000 over 7y, 0.0% of budgetST LOUIS ART MUSEUM FOUNDATION: $15,500 over 7y, 0.0% of budgetHUMANE SOCIETY OF MISSOURI: $14,100 over 7y, 0.0% of budgetBE LIKE BRIT FOUNDATION INC: $14,000 over 7y, 0.2% of budgetTHE FOUNDATION FOR BARNES-JEWISH HOSPITAL: $13,000 over 7y, 0.0% of budgetOXFAM-AMERICA INC: $12,500 over 7y, 0.0% of budgetST LOUIS CHILDREN'S HOSPITAL FOUNDATION: $12,500 over 7y, 0.0% of budgetSHRINERS HOSPITALS FOR CHILDREN: $12,000 over 6y, 0.0% of budgetST JUDE CHILDREN'S RESEARCH HOSPITAL INC: $10,000 over 6y, 0.0% of budgetTHE WATER PROJECT INC: $9,000 over 7y, 0.0% of budgetST LOUIS CRISIS NURSERY: $8,500 over 7y, 0.0% of budgetONE HEART FAMILY MINISTRIES INC: $8,350 over 6y, 1.0% of budgetSouthern Methodist University: $8,000 over 4y, 0.0% of budgetLYNN UNIVERSITY INC: $8,000 over 3y, 0.0% of budgetST LOUIS LEARNING DISABILITIES ASSOCIATION: $6,500 over 7y, 0.1% of budgetST PATRICK CENTER: $6,000 over 7y, 0.0% of budgetWOUNDED WARRIOR PROJECT INC: $5,800 over 7y, 0.0% of budgetGREAT PLAINS CONSERVATION FOUNDATION: $5,500 over 3y, 0.1% of budgetONCAFARI INTERNATIONAL INC: $5,000 over 2y, 0.6% of budgetMUNICIPAL THEATRE ASSOCIATION OF ST LOUIS: $4,850 over 5y, 0.0% of budgetMARINE TOYS FOR TOTS FOUNDATION: $4,700 over 7y, 0.0% of budgetSAINT LOUIS SYMPHONY ORCHESTRA: $4,000 over 7y, 0.0% of budgetVP COMMUNITY IMPACT FOUNDATION: $4,000 over 4y, 0.8% of budgetVIZCAYA MUSEUM AND GARDENS TRUST INC: $3,500 over 4y, 0.0% of budgetMUSCULAR DYSTROPHY ASSOCIATION INC: $3,500 over 7y, 0.0% of budgetSPECIAL OLYMPICS MISSOURI INC: $3,500 over 7y, 0.0% of budgetTHE BACKSTOPPERS INC FKA POLICEMEN & FIREMEN FUND OF ST LOUIS: $3,500 over 7y, 0.0% of budgetForest Park Forever Inc: $3,500 over 7y, 0.0% of budgetMAKE-A-WISH FOUNDATION OF MISSOURI AND KANSAS: $3,500 over 7y, 0.0% of budgetWORLD BIRD SANCTUARY: $3,400 over 7y, 0.0% of budgetPAWS FOR PURPLE HEARTS: $3,200 over 7y, 0.0% of budgetEPWORTH CHILDREN & FAMILY SERVICES INC: $3,000 over 5y, 0.0% of budgetThe Susan G Komen Breast Cancer Foundation Inc: $2,800 over 7y, 0.0% of budgetWORLD WILDLIFE FUND INC: $2,650 over 7y, 0.0% of budgetUNITED SERVICE ORGANIZATION USO OF MISSOURI INC: $2,200 over 5y, 0.1% of budgetGALAPAGOS CONSERVANCY INC: $2,150 over 7y, 0.0% of budgetTHE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $2,100 over 7y, 0.0% of budgetWildlife Rescue Center: $2,050 over 7y, 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 UNITED WAY OF GREATER ST LOUIS INC ↗
  • Who funds ST LOUIS AREA FOOD BANK INC ↗
  • Who funds OPERATION FOOD SEARCH INC ↗
  • Who funds FOOD OUTREACH INC ↗
  • Who funds THE LATIN SCHOOL OF CHICAGO ↗
  • Who funds Foxcroft School ↗
  • Who funds Mary Institute and St Louis Country Day School ↗
  • Who funds MISSOURI STATE UNIVERSITY FOUNDATION ↗
  • Who funds WASHINGTON UNIVERSITY ↗
  • Who funds MEDECINS SANS FRONTIERES USA INC ↗
  • Who funds CONNECTICUT COLLEGE ↗
  • Who funds ST LOUIS ART MUSEUM FOUNDATION ↗
  • Who funds HUMANE SOCIETY OF MISSOURI ↗
  • Who funds BE LIKE BRIT FOUNDATION INC ↗
  • Who funds THE FOUNDATION FOR BARNES-JEWISH HOSPITAL ↗
  • Who funds OXFAM-AMERICA INC ↗
  • Who funds ST LOUIS CHILDREN'S HOSPITAL FOUNDATION ↗
  • Who funds SHRINERS HOSPITALS FOR CHILDREN ↗
  • Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
  • Who funds THE WATER PROJECT INC ↗
  • Who funds ST LOUIS CRISIS NURSERY ↗
  • Who funds ONE HEART FAMILY MINISTRIES INC ↗
  • Who funds Southern Methodist University ↗
  • Who funds LYNN UNIVERSITY INC ↗
  • Who funds ST LOUIS LEARNING DISABILITIES ASSOCIATION ↗
  • Who funds ST PATRICK CENTER ↗
  • Who funds WOUNDED WARRIOR PROJECT INC ↗
  • Who funds GREAT PLAINS CONSERVATION FOUNDATION ↗
  • Who funds ONCAFARI INTERNATIONAL INC ↗
  • Who funds MUNICIPAL THEATRE ASSOCIATION OF ST LOUIS ↗
  • Who funds MARINE TOYS FOR TOTS FOUNDATION ↗

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.

St Louis Community Fo…Centene FoundationEmployees Community F…Edward Jones Foundati…St Louis Community Fo…World Wide Technology…Sander FoundationThe Lilly Christy Bus…Youthbridge Community…Moneta Group Charitab…Edward Jones Foundati…United Way of Greater…
St Louis Community Foundation IncMO40.7× affinity19 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: St Louis Community Foundation Inc · Centene Foundation · Employees Community Fund of the Boeing Company · Edward Jones Foundation · St Louis Community Foundation · World Wide Technology Foundation · Sander Foundation · The Lilly Christy Busch Hermann Foundation · Youthbridge Community Foundation · Moneta Group Charitable Foundation · Edward Jones Foundation · United Way of Greater St Louis Inc

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 William S and Blair y Thompson Family Foundation funds: left to right is the share of its income from government, bottom to top the share from William S and Blair y Thompson Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 80%0%1%3%5%funder's share of their income ↑0%15%30%45%60%share of the org’s income from government →median 0%
  • Vizcaya Museum and Gardens Trust Inc: 3% of income from government
  • Connecticut College: 0% of income from government
  • Lynn University Inc: 0% of income from government
  • Wounded Warrior Project Inc: 0% of income from government
  • Shriners Hospitals for Children: 0% of income from government
  • Oxfam-America Inc: 0% of income from government
no gov moneyreceives it· size = income
8get no government money at all
13report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–60%
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 William S and Blair y Thompson Family Foundation?

Find your warmest path to William S and Blair y Thompson Family 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 131 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 William S and Blair y Thompson 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