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Plinth

· Private foundation

The Harry and Marjorie Stewart Foundatin

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.

$45k
Granted FY2025still arriving
18
Grants FY2025still arriving
5
States reached
$5k
Largest
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 FY20182025.

Human Services$79kEducation$57kHealth$36kFood & Nutrition$27kPublic Safety & Disaster$24kEnvironment$23kInternational$18kYouth Development$17kOther$0
02FY2025 · 18 grants

Where the money goes

Your grants by size, and where they go.

$2,500
Median grant
5
States reached
$564k
Total assets
Largest grants
RecipientAmount
MAKE WAY FOR BOOKS$5,000
ADULT LOSS OF HEARING ASSOCIATION$5,000
UNIV OF ARIZONA FOUNDATION$5,000
COMMUNITY FOOD BANK OF SO AZ$5,000
AMERICAN RED CROSS$3,000
YMCA FOUNDATION$3,000
MEDICAL BENEVOLENCE FOUNDATION$2,500
NATURE CONSERVANCY$2,500
Individual grant recipient$2,500
EMERGE CENTER AGAINST DOMESTIC ABUS$2,000
BOYS AND GIRLS CLUB OF TUCSON$2,000
OWL AND PANTHER$1,500
CENTER FOR BIOLOGICAL DIVERSITY$1,000
ECHO THEATER COMPANY$1,000
ARIZONA PUBLIC MEDIA$1,000
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 (FY18–25, $52k) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 11%AMERICAN RED CROSS: $3k → 14%AMERICAN RED CROSS: $3k → 14%AMERICAN RED CROSS: $3k → 14%AMERICAN RED CROSS: $3k → 14%AMERICAN RED CROSS: $3k → 14%AMERICAN RED CROSS: $3k → 14%THE MIDNIGHT MISSION: $750 → 14%STEADY STRIDES RIDING CENTER: $1k → 15%STEADY STRIDES RIDING CENTER: $1k → 15%STEADY STRIDES RIDING CENTER: $1k → 15%STEADY STRIDES RIDING CENTER: $1k → 15%STEADY STRIDES RIDING CENTER: $1k → 15%EMERGE CENTER AGAINST DOMESTIC ABUS: $2k → 15%EMERGE CENTER AGAINST DOMESTIC ABUS: $2k → 15%EMERGE CENTER AGAINST DOMESTIC ABUS: $2k → 15%EMERGE CENTER AGAINST DOMESTIC ABUS: $2k → 15%EMERGE CENTER AGAINST DOMESTIC ABUS: $2k → 15%EMERGE CENTER AGAINST DOMESTIC ABUS: $2k → 15%YOUTH ON THEIR OWN: $1k → 15%YOUTH ON THEIR OWN: $3k → 15%YOUTH ON THEIR OWN: $3k → 15%YOUTH ON THEIR OWN: $3k → 15%YOUTH ON THEIR OWN: $3k → 15%YOUTH ON THEIR OWN: $3k → 15%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.

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.

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.

90%of every dollar goes to organizations you’ve funded before.
$272k · 18 repeat orgs$30k to everyone else

18 repeat relationships — 16 still active in FY2025, 2 since wound down; 1 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

18
21

Total granted

$272k
$29k

Median revenue growth · since first grant

+69%
+86%

Still filing today

67%
43%

New vs renewed · share of each year

In FY2025, 98% of grant dollars renewed an existing relationship; $1k went to new ones.

50%100%’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’18’19’20’21’22’23’24’25
Human ServicesEducationYouth DevelopmentCivil RightsAnimalsFood & NutritionOther

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

  • MW
    Make Way For Books
    8× · 2018–2025 · $30k · revenue +154%
  • University of Arizona Foundation
    7× · 2018–2025 · $27k · revenue +19%
  • AN
    American National Red Cross & Its Constituent Chapters and Branches
    6× · 2020–2025 · $18k · revenue +38%

Funded once

  • UO
    UNIV OF ARIZ FOUNDATION
    one grant, 2019 · $3k
  • YO
    YMCA OF SOUTHERN ARIZONA
    one grant, 2018 · $3k · revenue -11%
  • MB
    MEDICAL BENEV FOUNDATION
    one grant, 2019 · $2k

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
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
2
Social Venture Partners Tucson

Svp tucson is an ever expanding community of engaged philanthropists dedicated to building the capacity, strength and impact of nonprofits in addressing social problems. we accomplish this through: thoughtful and strategic investments and…

Philanthropy
3
Arizona Latin-American Medical Association
Unclassified
4
United Way of Tucson and Southern Arizona Inc

Our vision is a community where every child receives a high-quality education from birth to career, every adult has the opportunity to thrive financailly and in the workplace, and every older person can retire and age with dignity and…

Philanthropy
5
Child Crisis Arizona

To provide children and youth in arizona a safe environment, free from abuse and neglect, by creating strong and successful families.

Crime & Legal
6
Tucson Investigative Reporting Center Inc

The Tucson Investigative Reporting Center educates and informs Southern Arizonans about the community challenges & unique culture of our borderlands through independent local journalism.

Animals
7
Arizona's Children Association

The mission of arizona's children association is to protect children, empower youth, and strengthen families.

Human Services
8
Humane Society of Southern Arizona

To compassionately serve pets and the people who love them.

Animals
9
Codac Health Recovery & Wellness

Codac provides tools, support and services to individuals, families, and communities so they may live with dignity, free from the harmful effects of mental illness, substance use disorders and trauma.

10
United Food Bank

United Food Bank unites communities to alleviate hunger.

Food & Nutrition
11
Impact of Southern Arizona

Impact of southern arizona is a private non-profit volunteer based organization which empowers southern arizonans with the resources required to pursue a stabilized and enhanced quality of life.

Community Improvement
12
Tucson Audubon Society

Inspire people to enjoy and protect birds through recreation, education, conservation, and restoration of the environment, upon which we all depend.

Animals

For reference, the grantee most central to the portfolio’s shape is Casa De Los Ninos and the most unlike its peers is Southern Arizona Gender Alliance Inc. 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

23 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 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 23 of the 41 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.

0
Load-bearing (≥25% of a budget)
7
Early backer (in before they grew)
22/23
Grantees still filing
16/23
Grew since you first funded

Where your money sits — by cause, then by grantee

ADULT LOSS OF HEARING ASSOCIATION INC — $33,000 · OtherADULT LOSS OF HEARING ASSOCIATION INCYMCA FOUNDATION — $21,000 · OtherYMCA FOUNDATIONTHE NATURE CONSERVANCY — $16,500 · OtherTHE NATURE CONSERVANCYIndividual grant recipient — $12,500 · OtherIndividual grant recipientAMERICAN RED CROSS — $6,000 · OtherECHO THEATER COMPANY — $5,000 · Other+20 more — $28,750 · Other+20 moreAmerican National Red Cross & Its Constituent Chapters and Branches — $18,000 · Human ServicesAmerican National Red …YOUTH ON THEIR OWN — $16,000 · Human ServicesYOUTH ON THEIR OWNTUCSON CENTERS FOR WOMEN & CHILDREN INC DBA EMERGE CENTER AGAINST DOMESTIC ABUSE — $12,000 · Human ServicesTUCSON CENTERS FOR WOM…OWL & PANTHER — $7,500 · Human ServicesOWL & PANTHERSteady Strides Riding Center — $5,000 · Human ServicesSteady Strides Riding …YMCA OF SOUTHERN ARIZONA — $3,000 · Human Services+1 more — $750 · Human ServicesMake Way For Books — $30,000 · EducationMake Way For BooksUniversity of Arizona Foundation — $27,000 · EducationUniversity of Arizon…BOYS & GIRLS CLUBS OF TUCSON INC — $16,000 · Youth DevelopmentBOYS & GI…CASA DE LOS NINOS — $10,000 · Youth DevelopmentCASA DE L…Community Food Bank Inc — $25,000 · Food & NutritionMEDICAL BENEVOLENCE FOUNDATION — $17,500 · InternationalCENTER FOR BIOLOGICAL DIVERSITY INC — $6,000 · AnimalsPixie Project Inc — $1,000 · Animals
Other$122,750Human Services$62,250Education$57,000Youth Development$26,000Food & Nutrition$25,000International$17,500Animals$7,000

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 budgetMake Way For Books — $30,000 over 8y, 0.2% of budgetUniversity of Arizona Foundation — $27,000 over 7y, 0.0% of budgetCommunity Food Bank Inc — $25,000 over 7y, 0.0% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches — $18,000 over 6y, 0.0% of budgetMEDICAL BENEVOLENCE FOUNDATION — $17,500 over 7y, 0.0% of budgetTHE NATURE CONSERVANCY — $16,500 over 8y, 0.0% of budgetBOYS & GIRLS CLUBS OF TUCSON INC — $16,000 over 8y, 0.1% of budgetYOUTH ON THEIR OWN — $16,000 over 6y, 0.1% of budgetTUCSON CENTERS FOR WOMEN & CHILDREN INC DBA EMERGE CENTER AGAINST DOMESTIC ABUSE — $12,000 over 6y, 0.0% of budgetCASA DE LOS NINOS — $10,000 over 6y, 0.0% of budgetOWL & PANTHER — $7,500 over 7y, 1.7% of budgetCENTER FOR BIOLOGICAL DIVERSITY INC — $6,000 over 6y, 0.0% of budgetSteady Strides Riding Center — $5,000 over 5y, 0.4% of budgetYMCA OF SOUTHERN ARIZONA — $3,000 over 1y, 0.0% of budgetHabitat for Humanity Tucson Inc — $2,000 over 1y, 0.0% of budgetTHE MIDNIGHT MISSION — $750 over 1y, 0.0% of budgetTHE CIRCUS PROJECT — $500 over 1y, 0.1% of budgetTREVOR PROJECT INC — $500 over 1y, 0.0% of budgetSIERRA CLUB — $500 over 1y, 0.0% of budgetDONT SHOOT PORTLAND — $500 over 1y, 0.0% of budgetOUTSIDE IN — $500 over 1y, 0.0% of budgetSouthern Arizona Gender Alliance Inc — $250 over 1y, 0.3% 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 Make Way For Books
  • Who funds University of Arizona Foundation
  • Who funds Community Food Bank Inc
  • Who funds American National Red Cross & Its Constituent Chapters and Branches
  • Who funds MEDICAL BENEVOLENCE FOUNDATION
  • Who funds THE NATURE CONSERVANCY
  • Who funds BOYS & GIRLS CLUBS OF TUCSON INC
  • Who funds YOUTH ON THEIR OWN
  • Who funds TUCSON CENTERS FOR WOMEN & CHILDREN INC DBA EMERGE CENTER AGAINST DOMESTIC ABUSE
  • Who funds CASA DE LOS NINOS
  • Who funds OWL & PANTHER
  • Who funds CENTER FOR BIOLOGICAL DIVERSITY INC
  • Who funds Steady Strides Riding Center
  • Who funds YMCA OF SOUTHERN ARIZONA
  • Who funds Habitat for Humanity Tucson Inc
  • Who funds Pixie Project Inc
  • Who funds THE MIDNIGHT MISSION
  • Who funds THE CIRCUS PROJECT
  • Who funds TREVOR PROJECT INC
  • Who funds SIERRA CLUB
  • Who funds DONT SHOOT PORTLAND
  • Who funds OUTSIDE IN

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.

Community Foundation for Southern ArizonaAZ21.7× affinity8 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Community Foundation for Southern Arizona · Arizona Community Foundation · Connie Hillman Family Foundation · The Hs Lopez Family Foundation · United Way of Tucson and Southern Arizona Inc · Texas Instruments Foundation · The Intuit Foundation · Roth Family Foundation · Tucson Medical Center · Social Venture Partners Tucson · Jewish Community Foundation of Southern Arizona · Phoenix Suns Charities Inc

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 Harry and Marjorie Stewart Foundatin 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 or a single department — and drag the year to watch it move.

2024
202122232425
no gov · 20%0%1%3%5%your share of their income ↑0%13%25%38%50%share of the org’s income from governmentmedian 33%
  • Outside in33% of income from government
no gov moneyreceives it· size = income
2get no government money at all
9report 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, FY2025

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.

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 41 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