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Maas Foundation Inc at a glance

· Private foundation

Maas 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.

$136k
Granted FY2025still arriving
38
Grants FY2025still arriving
15
States reached
$20k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0199% classified

What it funded, over time

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

Education$332kHealth$69kArts & Culture$69kFood & Nutrition$26kInternational$24kEnvironment$23kAnimals$19kCrime & Legal$15kOther$0
02FY2025 · 38 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k36 grants · $105k
  • $10k–50k2 grants · $30k
$3,000
Median grant
15
States reached
$1.4M
Total assets
Largest grants
RecipientAmount
UNIVERSITY OF WISCONSIN FOUNDATION$20,250
LOS ANGELES PHILHARMONIC ASSOCIATION$10,000
MILWAUKEE REPERTORY THEATER$6,000
LEE MEMORIAL HEALTH SYSTEM FOUNDATION INC$6,000
FLORIDA GOLF COAST UNIVERSITY FOUNDATION$6,000
NATIONAL CASAGAL ASSOCIATION FOR CHILDREN$5,000
TREEPEOPLE$5,000
NOBLE NETWORK CHARTER SCHOOLS$5,000
AMERICAN FORESTS$5,000
KCRW$5,000
ARKANSAS CHILDRENS HOSPITAL$5,000
COLONIAL WILLIAMSBURG FOUNDATION$5,000
LOVE & LOVE TENNIS FOUNDATION$5,000
MADISON CHILDREN'S MUSEUM$5,000
MEDSHARE$5,000
02The need
03

Does the money reach high-need areas?

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

show:

Its human-services grants (FY21–25, $12k) land where the poverty rate runs at 11%, against an area that typically sits at 11%. 46% of those dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.

area typical 11%IRWIN A AND ROBERT D GOODMAN COMMUNITY CENTER: $750 → 10%IRWIN A AND ROBERT D GOODMAN COMMUNITY CENTER: $400 → 10%IRWIN A AND ROBERT D GOODMAN COMMUNITY CENTER: $250 → 10%EQUESTRIAN CONNECTION NFP: $5k → 8%THE NIGHT MINISTRY: $500 → 14%METROPOLITAN FAMILY SERVICES: $5k → 14%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
WA
IL
WI
NY
PA
CA
CO
MO
VA
MD
AR
NC
DC
LA
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.
03Its grantees
repeat funding

Who it funds again

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

57%of every dollar goes to organizations it has funded before.
$373k · 31 repeat orgs$277k to everyone else

Grantees it renews have grown median revenue +8% since the first grant, against 0% for those funded once.

31 repeat relationships: 20 still active in FY2025, 11 since wound down; 17 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

31
29

Total granted

$373k
$226k

Median revenue growth · since first grant

+8%
0%

Still filing today

77%
62%

New vs renewed · share of each year

In FY2025, 62% of grant dollars renewed an existing relationship; $51k 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
EducationArts & CultureHealthAnimalsHuman ServicesInternationalOther
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

  • BT
    BREAKTHROUGH T1D
    9× · 2017–2025 · $22k · revenue +49%
  • FLORIDA GULF COAST UNIVERSITY FOUNDATION INC
    4× · 2022–2025 · $20k · revenue +8%
  • HARRY CHAPIN FOOD BANK OF SOUTHWEST FLORIDA INC
    4× · 2022–2025 · $18k · revenue +42%

Funded once

  • UO
    UNIVERSITY OF WISCONSIN FOUNDATION-DUANE H MAAS FUND
    one grant, 2020 · $100k
  • UO
    UNIVERSITY OF WISCONSIN FOUNDATION-SONJA J MAAS SCHOLARSHIP IN EDUCATION
    one grant, 2019 · $20k
  • UO
    UNIVERSITY OF WISCONSIN FOUNDATION-DUANE H MAAS SCHOLARSHIP IN ENGINEERING
    one grant, 2019 · $20k
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 Water Research Foundation

The purpose of the water research foundation (wrf) is a definitive research organization to advance the science of all things water to better meet the evolving needs of its subscribers and the water sector. to engage exclusively in…

Environment
2
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
3
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…

—
4
Chicago Public Education Fund

The chicago public education fund (the fund) is a nonprofit organization that improves public schools in chicago by investing in the talented educators who lead them.

Education
5
The Global FoodBanking Network

To nourish the world's hungry through uniting and advancing food banks.

International
6
Nourishing Hope

Nourishing hope provides food, mental health support, and social services to help all our neighbors thrive.

—
7
Children's Museum of Oak Park

To spark curiosity and creativity in all young children through positive, play-based learning experiences.

Arts & Culture
8
Midwest Dairy Association

Midwest dairy works with others to give consumers an excellent dairy experience increasing sales, fostering innovation, and inspiring consumer confidence of dairy products and practices.

—
9
Central Indiana Corporate Partnership Inc

Central indiana corporate partnership (cicp) is an alliance of indiana's business and research university leaders coming together to foster long-term prosperity for the region. cicp's mission is to transform the economy of indiana in order…

Community Improvement
10
Lake Forest Graduate School of Management

Lake Forest Graduate School of Management's mission is to bring the real world to business education and leadership development.

—
11
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
12
National Fish and Wildlife Foundation

To sustain, restore, and enhance the nation's fish, wildlife, plants, and habitats.

Animals
How this is measured
The grantee most central to the portfolio’s shape is Shelter From the Storm Animal Rescue Inc; the most unlike its peers is Foundation for the Vernon Area Public Library District. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

57 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. 57 of the 78 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)
8
Early backer (in before they grew)
57/57
Grantees still filing
26/57
Grew since first funded

Where the money sits, by cause and then by grantee

UNIVERSITY OF WISCONSIN FOUNDATION-DUANE H MAAS FUND: $100,000 · OtherUNIVERSITY OF WISCONSIN FOUNDATION-DUANE H MAAS FUNDUNIVERSITY OF WISCONSIN FOUNDATION-SONJA J MAAS SCHOLARSHIP IN EDUCATION: $20,000 · OtherUNIVERSITY OF WISCONSIN FOUNDATION-SONJA J MAAS SCHOLARSHIP …UNIVERSITY OF WISCONSIN FOUNDATION-DUANE H MAAS SCHOLARSHIP IN ENGINEERING: $20,000 · OtherUNIVERSITY OF WISCONSIN FOUNDATION-DUANE H MAAS SCHOLARSHIP …UNIVERSITY OF WISCONSIN FOUNDATION-SONJA J MAAS FUND: $20,000 · OtherUNIVERSITY OF WISCONSIN FOUNDATION-SONJA J MAAS FUNDKCRW: $17,000 · Other+46 more: $169,200 · Other+46 moreUNIVERSITY OF WISCONSIN FOUNDATION: $101,000 · EducationUNIVERSITY OF WISCONSIN FO…FLORIDA GULF COAST UNIVERSITY FOUNDATION INC: $20,000 · EducationFLORIDA GULF COAST UNIVERS…NOBLE NETWORK OF CHARTER SCHOOLS: $15,000 · EducationNOBLE NETWORK OF CHARTER S…New York University: $9,000 · EducationNew York University+4 more: $10,000 · Education+4 moreColonial Williamsburg Foundation: $19,000 · Arts & CultureColonial …LOS ANGELES PHILHARMONIC ASSOCIATION: $13,500 · Arts & CultureLOS ANGEL…MILWAUKEE REPERTORY THEATER INC: $13,000 · Arts & CultureMILWAUKEE…MADISON CHILDREN'S MUSEUM INC: $5,000 · Arts & CultureMADISON C…BOOK LOVE FOUNDATION: $5,000 · Arts & CultureBOOK LOVE…+1 more: $500 · Arts & CultureBREAKTHROUGH T1D: $22,351 · HealthBREAD OF HEALING INC: $5,000 · HealthARKANSAS CHILDREN'S HOSPITAL: $5,000 · HealthPROJECT ALS INC: $1,400 · Health+1 more: $1,000 · HealthHARRY CHAPIN FOOD BANK OF SOUTHWEST FLORIDA INC: $18,000 · Food & NutritionGREATER CHICAGO FOOD DEPOSITORY: $2,750 · Food & Nutrition+1 more: $700 · Food & NutritionTREES FOR THE FUTURE INC: $10,000 · EnvironmentAmerican Forests: $5,000 · EnvironmentTREEPEOPLE INC: $5,000 · EnvironmentLEE MEMORIAL HEALTH SYSTEM FOUNDATION INC: $16,000 · PhilanthropyWAUKESHA COUNTY COMMUNITY FOUNDATION: $2,500 · Philanthropy
Other$346,200Education$155,000Arts & Culture$56,000Health$34,751Food & Nutrition$21,450Environment$20,000Philanthropy$18,500

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 budgetUNIVERSITY OF WISCONSIN FOUNDATION: $101,000 over 5y, 0.0% of budgetBREAKTHROUGH T1D: $22,351 over 9y, 0.0% of budgetFLORIDA GULF COAST UNIVERSITY FOUNDATION INC: $20,000 over 4y, 0.0% of budgetColonial Williamsburg Foundation: $19,000 over 4y, 0.0% of budgetHARRY CHAPIN FOOD BANK OF SOUTHWEST FLORIDA INC: $18,000 over 4y, 0.0% of budgetLEE MEMORIAL HEALTH SYSTEM FOUNDATION INC: $16,000 over 3y, 0.0% of budgetNOBLE NETWORK OF CHARTER SCHOOLS: $15,000 over 3y, 0.0% of budgetLOS ANGELES PHILHARMONIC ASSOCIATION: $13,500 over 2y, 0.0% of budgetMILWAUKEE REPERTORY THEATER INC: $13,000 over 4y, 0.0% of budgetARMY EMERGENCY RELIEF: $10,000 over 3y, 0.0% of budgetTREES FOR THE FUTURE INC: $10,000 over 2y, 0.1% of budgetLEGAL AID CHICAGO: $10,000 over 2y, 0.0% of budgetNew York University: $9,000 over 2y, 0.0% of budgetMEDSHARE INTERNATIONAL INC: $8,000 over 2y, 0.1% of budgetWAUKESHA FREE CLINIC INC: $6,500 over 2y, 0.5% of budgetPAWS CHICAGO: $5,500 over 4y, 0.0% of budgetAmerican Forests: $5,000 over 1y, 0.0% of budgetFelines Inc: $5,000 over 1y, 0.4% of budgetSAMARITAN'S PURSE: $5,000 over 1y, 0.0% of budgetThe Cradle Society: $5,000 over 1y, 0.1% of budgetMADISON CHILDREN'S MUSEUM INC: $5,000 over 1y, 0.1% of budgetBREAD OF HEALING INC: $5,000 over 3y, 0.2% of budgetTHE KOSCIUSZKO FOUNDATION INC: $5,000 over 1y, 0.1% of budgetMetropolitan Family Services: $5,000 over 1y, 0.0% of budgetWINGS PROGRAM INC: $5,000 over 1y, 0.0% of budgetBOOK LOVE FOUNDATION: $5,000 over 3y, 2.5% of budgetEquestrian Connection NFP: $5,000 over 1y, 0.2% of budgetARKANSAS CHILDREN'S HOSPITAL: $5,000 over 1y, 0.0% of budgetHAVE DREAMS: $4,000 over 1y, 0.2% of budgetDONORSCHOOSEORG: $4,000 over 1y, 0.0% of budgetRole Model Movement Inc (NFP): $4,000 over 1y, 0.1% of budgetGirls on the Run of New Orleans: $3,000 over 1y, 1.9% of budgetWORLD CENTRAL KITCHEN INC: $3,000 over 1y, 0.0% of budgetGREATER CHICAGO FOOD DEPOSITORY: $2,750 over 4y, 0.0% of budgetTHE CHILDRENS SCHOLARSHIP FUND: $2,500 over 1y, 0.0% of budgetPEWAUKEE HIGH SCHOOL BOOSTER CLUB: $2,000 over 1y, 1.5% of budgetCHICAGO PARKS FOUNDATION: $1,500 over 1y, 0.0% of budgetHELEN KELLER INTERNATIONAL: $1,500 over 2y, 0.0% of budgetFOUNDATION FOR THE VERNON AREA PUBLIC LIBRARY DISTRICT: $1,500 over 1y, 11% of budgetIRWIN A AND ROBERT D GOODMAN COMMUNITY CENTER INC: $1,400 over 3y, 0.0% of budgetPROJECT ALS INC: $1,400 over 2y, 0.0% of budgetThe Against Malaria Foundation: $1,000 over 3y, 0.0% of budgetLOS ANGELES REGIONAL FOOD BANK: $1,000 over 1y, 0.0% of budgetNEXT STEP INC: $1,000 over 1y, 0.1% of budgetOconomowoc Food Pantry Inc: $1,000 over 1y, 0.3% of budgetSECOND HARVEST FOODBANK OF SOUTHERN WI: $700 over 2y, 0.0% of budgetSHELTER FROM THE STORM ANIMAL RESCUE INC: $500 over 1y, 0.0% of budgetLyric Opera of Chicago: $500 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.

Baxter International …Baird Foundation IncHerbert H Kohl Charit…AbbVie FoundationThe Blackbaud Giving …Carmax FoundationTrustmark FoundationJpmorgan Chase Founda…Alliant Energy Founda…Arthur J Gallagher Fo…American Endowment Fo…T Rowe Price Program …
Baxter International FoundationIL20.8× affinity8 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Baxter International Foundation · Baird Foundation Inc · Herbert H Kohl Charities Inc · AbbVie Foundation · The Blackbaud Giving Fund · Carmax Foundation · Trustmark Foundation · Jpmorgan Chase Foundation · Alliant Energy Foundation Inc · Arthur J Gallagher Foundation · American Endowment Foundation · T Rowe Price Program for Charitable Giving 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 Maas Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Maas Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 30%6%25%56%100%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →
    no gov moneyreceives it· size = income
    3get 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
    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 Maas Foundation Inc?

    Find your warmest path to Maas 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 78 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 Maas’ 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