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The Bill Muster Foundation at a glance

· Private foundation

The Bill Muster 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.

$69k
Granted FY2022
53
Grants FY2022
18
States reached
$10k
Largest
01What it fundsRead
02Its granteesRead
03Its fieldRead
04Through PlinthRead
01What it funds
0183% classified

What it funded, over time

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

Human Services$23kArts & Culture$21kAnimals$20kEducation$13kHealth$11kSocial Science$6kRecreation & Sports$4kEnvironment$3kOther$0
02FY2022 · 53 grants

Where the money goes

Grants by size, and the largest recipients.

How this is measured
The 53 grants below total $59,975, the rows itemized in this filing. The $69,000 headline is the total grant expense on the return; the other $9,025 is giving the schedule does not break out (grants under the $5,000 itemization floor, grants to individuals, grants on other schedules). Every figure below describes the itemized rows only.

By grant size · FY2022

  • Under $10k52 grants · $50k
  • $10k–50k1 grant · $10k
$205
Median grant
18
States reached
$979k
Total assets
Largest grants
RecipientAmount
SATW$10,000
Our House Grief Support Center$9,000
International Cultic Studies Assoc$4,000
Our House Grief Support Center$4,000
UCSB Regents, University of California$3,000
ASU Foundation$3,000
Arizona Humane Society$2,500
UCSB Regents, University of California$2,000
International Assoc for the Study of Dreams$2,000
Arizona Humane Society$1,600
Arizona Humane Society$1,500
Arizona Humane Society$1,200
Arizona Humane Society$1,000
Arizona Humane Society$1,000
SATW$1,000
02Its grantees
repeat funding

Who it funds again

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

75%of every dollar goes to organizations it has funded before.
$129k · 32 repeat orgs$43k to everyone else

Grantees it renews have grown median revenue +45% since the first grant, against +28% for those funded once.

32 repeat relationships: 24 still active in FY2022, 8 since wound down; 10 grantees were first funded in FY2022 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

32
33

Total granted

$129k
$38k

Median revenue growth · since first grant

+45%
+28%

Still filing today

63%
42%

New vs renewed · share of each year

In FY2022, 91% of grant dollars renewed an existing relationship; $6k went to new ones.

50%100%’17’18’21’22
RenewedFirst-time

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

’17’18’21’22
Arts & CultureEnvironmentAnimalsPhilanthropyEducationHealthOther
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

  • OH
    OUR HOUSE GRIEF SUPPORT CENTER
    3× · 2017–2022 · $29k · revenue +46%
  • AH
    Arizona Humane Society
    4× · 2017–2022 · $24k · revenue +137%
  • IC
    INTERNATIONAL CULTIC STUDIES ASSOCIATION INC
    2× · 2021–2022 · $6k · revenue +124%

Funded once

  • CM
    CINCINNATI MUSEUM CENTER
    one grant, 2018 · $15k · revenue -54%
  • AW
    ASU Women's Golf Sun Devil Athletics
    one grant, 2017 · $6k
  • UF
    UCSB Foundation Library Dev and Outreach
    one grant, 2017 · $5k
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.

03Its 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 Union of Concerned Scientists Inc

The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.

International
2
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
3
Arizona Community Foundation

To lead, serve and collaborate to mobilize enduring philanthropy for a better arizona.

Philanthropy
4
University Corporation for Atmospheric Research

See schedule ouniversity corporation for atmospheric research (ucar), on behalf of, and in cooperation with its member university members, is engaged in the management of long-term atmospheric and related research and educational…

Science & Tech
5
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.

—
6
Arizona-Sonora Desert Museum

We inspire people to live in harmony with the natural world by fostering love, appreciation, and understanding of the sonoran desert.

Arts & Culture
7
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
8
Augustana College

Rooted in the liberal arts & sciences & lutheran expression of the christian faith, & is committed to offering a challenging education that develops qualities of mind, spirit, & body necessary for a rewarding life of leadership & service…

Education
9
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
10
American Geophysical Union

Agu's mission is to advance and support an inclusive community of earth and space scientists and partners dedicated to discovery and solutions to societal challenges. agu seeks to catalyze discovery and solutions to scientific and societal…

Science & Tech
11
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…

—
12
National Opinion Research Center

See schedule onorc at the university of chicago conducts research and data science on critical societal issues to guide decision-making and the development of programs and public policy. our experts identify relationships and trends, and…

Social Science
How this is measured
The grantee most central to the portfolio’s shape is Arizona Science Center; the most unlike its peers is Uncle Kory Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
03the grantee network

41 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. 41 of the 75 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
3
Early backer (in before they grew)
40/41
Grantees still filing
29/41
Grew since first funded

Where the money sits, by cause and then by grantee

SATW: $19,900 · OtherSATWInternational Association for the Study of Dreams: $13,060 · OtherInternational Association for the Study of DreamsUCSB Regents, University of California: $8,500 · OtherUCSB Regents, University of CaliforniaASU Women's Golf Sun Devil Athletics: $5,752 · OtherASU Women's Golf Sun Devil AthleticsINTERNATIONAL CULTIC STUDIES ASSOCIATION INC: $5,700 · OtherINTERNATIONAL CULTIC STUDIES ASSOCIATION INCMAPS: $4,800 · OtherMAPSUCSB Foundation Library Dev and Outreach: $4,700 · OtherTempe Symphonic Wind Ensemble: $4,000 · OtherThe Make A Wish Foundation: $3,850 · Other+42 more: $18,029 · Other+42 moreOUR HOUSE GRIEF SUPPORT CENTER: $29,000 · HealthOUR HOUSE GRIEF SUP…+1 more: $550 · HealthArizona Humane Society: $23,600 · AnimalsArizona Humane …+4 more: $525 · AnimalsCINCINNATI MUSEUM CENTER: $15,000 · Arts & CultureCINCINNATI MU…ARIZONA SCIENCE CENTER: $3,145 · Arts & CultureARIZONA SCIEN…CHILDREN'S MUSEUM OF PHOENIX: $1,600 · Arts & CultureCHILDREN'S MU…+3 more: $944 · Arts & CultureARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY: $3,000 · EducationTHUNDERBIRD PARENT ASSOCIATION: $450 · EducationWIKIMEDIA FOUNDATION INC: $400 · EducationDESERT BOTANICAL GARDEN INC: $1,648 · EnvironmentSEAHORSE HAWAII FOUNDATION: $1,100 · EnvironmentFRIENDS OF THE EARTH: $177 · Environment+3 more: $166 · EnvironmentHospice of the Valley: $1,440 · Human ServicesUNIVERSITY DISTRICT SERVICE LEAGUE: $800 · Human Services
Other$88,291Health$29,550Animals$24,125Arts & Culture$20,689Education$3,850Environment$3,091Human Services$2,240

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

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetOUR HOUSE GRIEF SUPPORT CENTER: $29,000 over 3y, 0.5% of budgetArizona Humane Society: $23,600 over 4y, 0.0% of budgetCINCINNATI MUSEUM CENTER: $15,000 over 1y, 0.0% of budgetInternational Association for the Study of Dreams: $13,060 over 3y, 2.1% of budgetINTERNATIONAL CULTIC STUDIES ASSOCIATION INC: $5,700 over 2y, 1.8% of budgetARIZONA SCIENCE CENTER: $3,145 over 2y, 0.0% of budgetARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY: $3,000 over 1y, 0.0% of budgetNorthwestern University: $2,000 over 1y, 0.0% of budgetDESERT BOTANICAL GARDEN INC: $1,648 over 2y, 0.0% of budgetCHILDREN'S MUSEUM OF PHOENIX: $1,600 over 3y, 0.0% of budgetHospice of the Valley: $1,440 over 2y, 0.0% of budgetST MARY'S FOOD BANK ALLIANCE: $1,400 over 2y, 0.0% of budgetSEAHORSE HAWAII FOUNDATION: $1,100 over 3y, 0.2% of budgetUNIVERSITY DISTRICT SERVICE LEAGUE: $800 over 1y, 0.0% of budgetPhoenix Children's Hospital: $550 over 1y, 0.0% of budgetREDWOOD CREDIT UNION COMMUNITY FUND INC: $500 over 1y, 0.0% of budgetUNCLE KORY FOUNDATION: $400 over 1y, 0.0% of budgetMARIJUANA POLICY PROJECT FOUNDATION: $400 over 3y, 0.0% of budgetTHE MARTIN AND OSA JOHNSON SAFARI MUSEUM INC: $400 over 3y, 0.4% of budgetPRESCOTT COLLEGE INC: $400 over 3y, 0.0% of budgetDubuque County Historical Society: $400 over 3y, 0.0% of budgetSOUTHERN POVERTY LAW CENTER INC: $400 over 3y, 0.0% of budgetWIKIMEDIA FOUNDATION INC: $400 over 3y, 0.0% of budgetDRCNET FOUNDATION INC: $400 over 3y, 0.5% of budgetTHE CARTER CENTER INC: $300 over 2y, 0.0% of budgetORGANIC CONSUMERS ASSOCIATION: $300 over 1y, 0.0% of budgetGREENPEACE INC: $220 over 2y, 0.0% of budgetFARM SANCTUARY INC: $200 over 1y, 0.0% of budgetHIMALAYAN ACADEMY: $200 over 2y, 0.0% of budgetORPHAN KITTEN CLUB INC: $200 over 1y, 0.0% of budgetUNIVERSITY OF WISCONSIN - LA CROSSE ALUMNI & FRIENDS FOUNDATION INC: $200 over 1y, 0.0% of budgetFRIENDS OF THE EARTH: $177 over 2y, 0.0% of budgetPHOENIX ART MUSEUM: $144 over 1y, 0.0% of budgetFINCA INTERNATIONAL INC: $100 over 1y, 0.0% of budgetCOMMITTEE TO PROTECT JOURNALISTS INC: $100 over 1y, 0.0% of budgetBEST FRIENDS ANIMAL SOCIETY: $100 over 1y, 0.0% of budgetNATURAL RESOURCES DEFENSE COUNCIL INC: $80 over 1y, 0.0% of budgetTHE SURFRIDER FOUNDATION: $50 over 1y, 0.0% of budgetWORLD WILDLIFE FUND INC: $36 over 1y, 0.0% of budgetLast Chance for Animals: $25 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

The Pfizer Foundation…Vanguard Charitable E…American Endowment Fo…Network for GoodAmerican Online Givin…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
The Pfizer Foundation IncNY10.3× affinity5 shared granteesties to 7 of 7Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Pfizer Foundation Inc · Vanguard Charitable Endowment Program · American Endowment Foundation · Network for Good · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.
04Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to The Bill Muster Foundation?

Find your warmest path to The Bill Muster 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 75 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 2022, released 2022. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Possibly out of date. A more recent filing (FY2024) is on record and reports $69k of grant expense with no grantee named in the published copy. A private foundation itemizes every grant it makes, so a return carrying none has filed its list as an attachment that the public copy does not include. The figures above are therefore from FY2022, the most recent year this funder’s grantee list reached the public record.

Source object · view filing

Play a game based on Bill Muster’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