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· Private foundation

Louis H and Mary Patricia Stumberg Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$848k
Granted FY2025still arriving
27
Grants FY2025still arriving
3
States reached
$100k
Largest
01What it funds
0192% classified

What it funded, over time

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

Education$1.1MArts & Culture$400kCommunity Improvement$336kEnvironment$328kPhilanthropy$310kReligion$225kHealth$211kHuman Services$154kOther$0
02FY2025 · 27 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k5 grants · $28k
  • $10k–50k13 grants · $285k
  • $50k–250k9 grants · $535k
$25,000
Median grant
3
States reached
$16M
Total assets
Largest grants
RecipientAmount
Individual grant recipient$100,000
Trinity University$75,000
Individual grant recipient$60,000
SUNSHINE COTTAGE SCHOOL FOR DEAF CHILDREN$50,000
Brighton Center$50,000
UNITED WAY OF SAN ANTONIO$50,000
Headwaters at Incarnate Word$50,000
YOSA$50,000
LAITY LODGE FOUNDATION$50,000
SAN ANTONIO BOTANICAL GARDEN SOCIETY INC$40,000
THE MCNAY ART MUSUEM$40,000
CHILDRENS BEREAVEMENT CENTER$40,000
UTSA School of Music$35,000
Army Residence Community$25,000
Individual grant recipient$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 (FY17–24, $57k) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%MORGAN INCLUSION INITIATIVE: $5k → 16%THE CHILDREN'S BEREAVEMENT CENTER OF SOUTH TEXAS: $5k → 16%RESPITE CARE OF SAN ANTONIO: $3k → 16%RESPITE CARE OF SAN ANTONIO: $3k → 16%THE CHILDREN'S BEREAVEMENT CENTER OF SOUTH TEXAS: $3k → 16%THE CHILDREN'S BEREAVEMENT CENTER OF SOUTH TEXAS: $3k → 16%CHILD SAFE: $5k → 16%MISSION ROAD DEVELOPMENTAL CENTER: $5k → 16%Presbyterian Childrens Home: $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.
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.

83%of every dollar goes to organizations it has funded before.
$3.1M · 30 repeat orgs$658k to everyone else

Grantees it renews have grown median revenue +42% since the first grant, against +33% for those funded once.

30 repeat relationships: 19 still active in FY2025, 11 since wound down; 8 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

30
19

Total granted

$3.1M
$563k

Median revenue growth · since first grant

+42%
+33%

Still filing today

47%
74%

New vs renewed · share of each year

In FY2025, 89% of grant dollars renewed an existing relationship; $95k went to new ones.

50%100%’17’18’19’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’21’22’23’24’25
Arts & CultureHuman ServicesEducationPhilanthropyCommunity ImprovementYouth DevelopmentOther
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

  • RC
    ROTARY CLUB OF SAN ANTONIO FOUNDATION
    2× · 2019–2021 · $333k · revenue +541% · 81% of their budget
  • TU
    Trinity University
    3× · 2021–2025 · $313k · revenue +14%
  • BC
    BRIGHTON CENTER
    3× · 2023–2025 · $250k · revenue +5%

Funded once

  • UO
    UNIVERSITY OF TEXAS AT SAN ANTONIO
    one grant, 2017 · $200k
  • TF
    THE FOUNDATION AT SHIELD RANCH
    one grant, 2021 · $75k · revenue -69%
  • HS
    HE STUMBERG ORPHANS CRIPPLED CHILDREN'S & HANDICAP
    one grant, 2024 · $68k
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
San Antonio Automobile Dealers Association Foundation Inc
—
2
San Antonio Christian School

Partner with families to provide students a christ-centered education while fostering a life of faith and service. the school desires to associate with like-minded teachers, administrators, staff, parents, and students to communicate the…

—
3
Tennis Officials of San Antonio Association
Recreation & Sports
4
San Anto Cultural Arts

To foster human and community development through community-based arts.

Arts & Culture
5
San Antonio Report

Publishing a local online news source. We believe a well informed and connected community is essential to making San Antonio a better place to live, work and play.

Arts & Culture
6
San Antonio Medical Foundation

The mission of the san antonio medical foundation is to improvehealth care, advance biomedical science, and enhance communitywell-being by providing leadership & active stewardship of our landand other assets.

Health
7
San Antonio Foster Care and Adoption and Services

San antonio foster care and adoption services inc. is a licensed child placement agency in the state of texas. the organization cares for children placed in foster care by the state of texas.

Human Services
8
Southwest Winners Foundation Inc

The mission of Southwest Winners Foundation is to provide an adaptive and effective learning environment that prepares students for success in the workplace and/or college.

Education
9
Greater Satx

The mission of greater:satx is to lead the developemnt and diversification of san antonio regional economy through the recruitment and expansion of qualify employers and job producing investments.

—
10
Valor Texas Education Foundation

Valor's mission is to educate the whole person in authentic communities for a full human life. Through our K-12 tuition-free classical charter schools and the Valor Institute, we build communities dedicated to wisdom, virtue, and…

Education
11
Center for 20TH Century Texas Studies
—
12
Discovery School of San Antonio

At Discovery School, our mission is to inspire and nurture the love of learning in young children and their families. The School offers an enhanced early childhood education for children 2 through 7 years to provide them with the skills…

Education
How this is measured
The grantee most central to the portfolio’s shape is Childrens Bereavement Center of South Texas; the most unlike its peers is The Foundation At Shield Ranch. 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

34 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. 34 of the 57 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)
6
Early backer (in before they grew)
33/34
Grantees still filing
24/34
Grew since first funded

Where the money sits, by cause and then by grantee

Individual grant recipient: $300,000 · OtherIndividual grant recipientUNIVERSITY OF TEXAS AT SAN ANTONIO: $200,000 · OtherUNIVERSITY OF TEXAS AT SAN ANTONIOIndividual grant recipient: $170,000 · OtherIndividual grant recipientUTSA School of Music: $160,000 · OtherUTSA School of MusicUT HEALTH SCIENCE CENTER: $115,000 · OtherUT HEALTH SCIENCE CENTERTHE MCNAY ART MUSUEM: $100,000 · OtherYOSA: $100,000 · OtherCHILDRENS BEREAVEMENT CENTER: $85,000 · OtherHE STUMBERG ORPHANS CRIPPLED CHILDREN'S & HANDICAP: $68,420 · OtherTHE FOUNDATION AT SHIELD RANCH: $75,000 · OtherHeadwaters at Incarnate Word Inc: $75,000 · Other+27 more: $494,186 · Other+27 moreTrinity University: $312,934 · EducationTrinity UniversityBRIGHTON CENTER: $250,000 · EducationBRIGHTON CENTERSUNSHINE COTTAGE SCHOOL FOR DEAF CHILDREN: $143,000 · EducationSUNSHINE COTTAGE SCHOO…Austin Classical School: $30,000 · Education+1 more: $20,000 · EducationROTARY CLUB OF SAN ANTONIO FOUNDATION: $333,334 · Community ImprovementROTARY CLU…+1 more: $2,500 · Community ImprovementUNITED WAY OF SAN ANTONIO AND BEXAR COUNTY: $250,000 · PhilanthropySan Antonio Foundation for Excellence in Education Inc: $10,000 · PhilanthropyCHARITY BALL LEGACY FOUNDATION INC: $10,000 · PhilanthropySAN ANTONIO BOTANICAL GARDEN SOCIETY INC: $203,000 · EnvironmentMCNAY ART MUSEUM: $50,000 · Arts & CultureSAN ANTONIO SYMPHONY LEAGUE: $30,000 · Arts & CultureMAGIK CHILDRENS THEATRE OF SAN ANTONIO DBA THE MAGIK THEATRE: $20,000 · Arts & CultureWitte Museum: $10,000 · Arts & CultureSAN ANTONIO CHILDREN'S MUSEUM: $10,000 · Arts & CultureTHE OPERA SAN ANTONIO DBA OPERA SAN AN: $5,000 · Arts & CultureMusical Bridges Around the World Inc: $5,000 · Arts & CultureLaity Lodge Foundation: $125,000 · Religion
Other$1,942,606Education$755,934Community Improvement$335,834Philanthropy$270,000Environment$203,000Arts & Culture$130,000Religion$125,000

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 budgetROTARY CLUB OF SAN ANTONIO FOUNDATION: $333,334 over 2y, 81% of budgetTrinity University: $312,934 over 3y, 0.1% of budgetBRIGHTON CENTER: $250,000 over 3y, 0.8% of budgetUNITED WAY OF SAN ANTONIO AND BEXAR COUNTY: $250,000 over 8y, 0.1% of budgetSAN ANTONIO BOTANICAL GARDEN SOCIETY INC: $203,000 over 8y, 0.4% of budgetSUNSHINE COTTAGE SCHOOL FOR DEAF CHILDREN: $143,000 over 8y, 0.4% of budgetLaity Lodge Foundation: $125,000 over 7y, 0.4% of budgetTHE FOUNDATION AT SHIELD RANCH: $75,000 over 1y, 1.4% of budgetHeadwaters at Incarnate Word Inc: $75,000 over 4y, 3.2% of budgetBrackenridge Park Conservancy: $50,000 over 2y, 3.0% of budgetMCNAY ART MUSEUM: $50,000 over 1y, 0.4% of budgetSAN ANTONIO SYMPHONY LEAGUE: $30,000 over 1y, 21% of budgetAustin Classical School: $30,000 over 3y, 0.4% of budgetPRESBYTERIAN CHILDREN'S HOMES & SERVICES: $25,000 over 1y, 0.1% of budgetMAGIK CHILDRENS THEATRE OF SAN ANTONIO DBA THE MAGIK THEATRE: $20,000 over 3y, 0.4% of budgetCHILDRENS BEREAVEMENT CENTER OF SOUTH TEXAS: $11,000 over 3y, 0.2% of budgetWitte Museum: $10,000 over 1y, 0.1% of budgetSAN ANTONIO CHILDREN'S MUSEUM: $10,000 over 1y, 0.1% of budgetCHARITY BALL LEGACY FOUNDATION INC: $10,000 over 1y, 8.4% of budgetTEXAS BIOMEDICAL RESEARCH INSTITUTE: $10,000 over 1y, 0.0% of budgetRespite Care of San Antonio Inc: $6,000 over 2y, 0.1% of budgetMorgan's Inclusion Initiative FKA Morgan's Wonderland Inclusion Foundation: $5,000 over 1y, 0.0% of budgetTHE OPERA SAN ANTONIO DBA OPERA SAN AN: $5,000 over 1y, 0.3% of budgetMISSION ROAD DEVELOPMENTAL CENTER: $5,000 over 1y, 0.0% of budgetCHILDSAFE: $5,000 over 1y, 0.1% of budgetSAN ANTONIO METROPOLITAN MINISTRIES INC: $3,000 over 3y, 0.0% of budgetCARVER DEVELOPMENT BOARD: $2,500 over 1y, 1.0% of budgetTHE TEXAS CAVALIERS: $1,000 over 1y, 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 ROTARY CLUB OF SAN ANTONIO FOUNDATION ↗
  • Who funds Trinity University ↗
  • Who funds BRIGHTON CENTER ↗
  • Who funds UNITED WAY OF SAN ANTONIO AND BEXAR COUNTY ↗
  • Who funds SAN ANTONIO BOTANICAL GARDEN SOCIETY INC ↗
  • Who funds SUNSHINE COTTAGE SCHOOL FOR DEAF CHILDREN ↗
  • Who funds Laity Lodge Foundation ↗
  • Who funds THE FOUNDATION AT SHIELD RANCH ↗
  • Who funds Headwaters at Incarnate Word Inc ↗
  • Who funds H E BUTT FOUNDATION ↗
  • Who funds Brackenridge Park Conservancy ↗
  • Who funds MCNAY ART MUSEUM ↗
  • Who funds SAN ANTONIO SYMPHONY LEAGUE ↗
  • Who funds Austin Classical School ↗
  • Who funds PRESBYTERIAN CHILDREN'S HOMES & SERVICES ↗
  • Who funds SABINAL ALUMNI ↗
  • Who funds MAGIK CHILDRENS THEATRE OF SAN ANTONIO DBA THE MAGIK THEATRE ↗
  • Who funds SAMMinistries Social Enterprises ↗
  • Who funds CHILDRENS BEREAVEMENT CENTER OF SOUTH TEXAS ↗
  • Who funds San Antonio Foundation for Excellence in Education Inc ↗
  • Who funds Witte Museum ↗
  • Who funds SAN ANTONIO CHILDREN'S MUSEUM ↗
  • Who funds CHARITY BALL LEGACY FOUNDATION 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.

San Antonio Area FoundationTX47.1× affinity21 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: San Antonio Area Foundation · Elizabeth Huth Coates Charitable Foundation of 1992 · Faye L & William L Cowden Charitable Foundation · Pryor Myra Stafford Char Tr F0030100 · Nancy Smith Hurd Foundation · Harvey E Najim Charitable Foundation · The Texas Cavaliers Charitable Foundation · Betty Stieren Kelso Foundation · The Charity Ball Association of San Antonio Inc · The Brown Foundation Inc · John R & Greli N Less Charitable Trust #FE324 · Charitable Foundation Frost F0359600

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 Louis H and Mary Patricia Stumberg Foundation funds: left to right is the share of its income from government, bottom to top the share from Louis H and Mary Patricia Stumberg Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%3%13%28%50%funder's share of their income ↑0%13%25%38%50%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    12report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–50%
    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 Louis H and Mary Patricia Stumberg Foundation?

    Find your warmest path to Louis H and Mary Patricia Stumberg 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 57 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

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