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Plinth

· Private foundation

The Ottosen 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.

$893k
Granted FY2025still arriving
15
Grants FY2025still arriving
3
States reached
$300k
Largest
01What you fund
01100% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20192025.

Health$3.1MEnvironment$552kArts & Culture$521kHuman Services$440kFood & Nutrition$200kHousing & Shelter$150kSocial Science$81kEducation$78kOther$0
02FY2025 · 15 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • $10k–50k6 grants · $173k
  • $50k–250k8 grants · $420k
  • $250k+1 grant · $300k
$50,000
Median grant
3
States reached
$8.8M
Total assets
Largest grants
RecipientAmount
BANNER HEALTH FOUNDATION$300,000
THE SALVATION ARMY$70,000
HOSPICE OF THE VALLEY$50,000
THE NATURE CONSERVANCY$50,000
BARROW NEUROLOGICAL FOUNDATION$50,000
ST MARY'S FOOD BANK$50,000
BALLET ARIZONA$50,000
O'CONNOR INSTITUTE$50,000
ST VINCENT DE PAUL SOCIETY$50,000
DESERT BOTANICAL GARDEN$48,078
TGEN FOUNDATION$35,000
ROSIE'S HOUSE$35,000
FRIENDS OF ARIZONA PBS$25,000
RONALD MCDONALD HOUSE$20,000
HEARD MUSEUM$10,000
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 (FY19–25, $1.2M) land where the poverty rate runs at 11%, against an area that typically sits at 9%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 9%CHRYSALIS: $25k → 11%RONALD MCDONALD HOUSE: $10k → 11%RONALD MCDONALD HOUSE: $5k → 11%RONALD MCDONALD HOUSE: $5k → 11%HOSPICE OF THE VALLEY: $425k → 11%HOSPICE OF THE VALLEY: $425k → 11%HOSPICE OF THE VALLEY: $200k → 11%HOSPICE OF THE VALLEY: $50k → 11%HOSPICE OF THE VALLEY: $50k → 11%HOSPICE OF THE VALLEY: $25k → 11%HOSPICE OF THE VALLEY: $15k → 11%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.

98%of every dollar goes to organizations you’ve funded before.
$4.8M · 18 repeat orgs$114k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +84% since the first grant, against +19% for the ones you funded once.

18 repeat relationships — 13 still active in FY2025, 5 since wound down; 1 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

18
16

Total granted

$4.8M
$94k

Median revenue growth · since first grant

+84%
+19%

Still filing today

72%
63%

New vs renewed · share of each year

In FY2025, 98% of grant dollars renewed an existing relationship; $20k went to new ones.

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

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

’19’20’21’22’23’24’25
Arts & CultureHealthHuman ServicesEnvironmentFood & NutritionCommunity ImprovementOther

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

  • BH
    Banner Health Foundation
    5× · 2019–2025 · $1.6M · revenue +108%
  • HO
    Hospice of the Valley
    7× · 2019–2025 · $1.2M · revenue +39%
  • DB
    DESERT BOTANICAL GARDEN INC
    6× · 2019–2025 · $336k · revenue +43%

Funded once

  • CS
    Chrysalis Shelter for Victims of Domestic Violence Inc
    one grant, 2021 · $25k · revenue -19%
  • SD
    SANDRA DAY O'CONNOR INSTITUTE FOR AMERICAN DEMOCRACYgraduated
    one grant, 2019 · $16k · revenue +76%
  • WB
    WOMEN'S BOARD OF BARROW
    one grant, 2019 · $10k

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
Boyce Thompson Southwestern Arboretum
3
Honorhealth

Honorhealth's mission is to improve the health and well-being of those we serve.

Health
4
Phoenix Children's Hospital Foundation

Phoenix children's hospital foundation supports phoenix children's hospital through fundraising ensuring that the hospital continues to stay on the leading edge of pediatric medicine and is equipped to fulfill its mission to advance hope,…

Health
5
Banner -University Medical Group

Assist banner health complete its mission to make health care easier so life can be better by providing integrated & coordinated care & population health management.

Health
6
The Dons of Arizona
Education
7
Arizona Latin-American Medical Association
Unclassified
8
Phoenix Conservatory of Music

The organization is committed to unleashing the power of music by providing high-quality music education and experiences that are affordable and accessible. its vision is to be a leader in music education with a focus on creative youth…

Arts & Culture
9
Arizona Community Foundation

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

Philanthropy
10
Arizona Science Center

To inspire, educate and engage curious minds through science.

Arts & Culture
11
Children's Museum of Phoenix

The children's museum of phoenix mission is to engage the minds, muscles, and imaginations of children and the grown-ups who care about them. with a focus on early childhood education and development for children birth to ten years, the…

Arts & Culture
12
Greater Phoenix Chamber of Commerce

Greater phoenix chamber of commerce (the chamber) catalyzes regional prosperity with forward-thinking public policy, intentional economic growth, and diverse, prepared talent.

For reference, the grantee most central to the portfolio’s shape is Hospice of the Valley and the most unlike its peers is Rosies House a Music Academy for Children Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

Your grantees are a median of 52 years old; the field is 11. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number30%5%<5yr17%0%5–10yr20%5%10–20yr14%10%20–35yr10%43%35–55yr10%38%55yr+
THE FIELDby orgYOUR MONEYby value30%0%<5yr17%0%5–10yr20%0%10–20yr14%40%20–35yr10%42%35–55yr10%18%55yr+

The field is 30% startups (under 5 years old) — 5% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close 0.0% lost their exemption, against 17% of the field you don’t fund.

orgs you fund
0.0%0/24
the rest of the field
17%
2,923/17,029

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

04the grantee network

24 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. 24 of the 36 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)
4
Early backer (in before they grew)
24/24
Grantees still filing
18/24
Grew since you first funded

Where your money sits — by cause, then by grantee

Banner Health Foundation — $1,575,000 · HealthBanner Health FoundationBARROW NEUROLOGICAL FOUNDATION — $105,000 · HealthBARROW NEUROLOGICAL FOUNDATION+2 more — $15,000 · HealthHospice of the Valley — $1,190,000 · Human ServicesHospice of the Valley+2 more — $45,000 · Human ServicesTHE NATURE CONSERVANCY — $215,000 · OtherTHE NATURE CONSERVANCYASU FOUNDATION (PBS) — $210,000 · OtherASU FOUNDATION (PBS)ST VINCENT DE PAUL SOCIETY — $205,000 · OtherST VINCENT DE PAUL SOCIETYTHE SALVATION ARMY — $195,000 · OtherTHE SALVATION ARMYTGEN FOUNDATION — $145,000 · OtherTGEN FOUNDATIONO'CONNOR INSTITUTE — $81,000 · OtherO'CONNOR INSTITUTEARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY — $110,000 · OtherARIZONA STATE UNIVERSITY FO…+10 more — $71,665 · Other+10 moreDESERT BOTANICAL GARDEN INC — $335,838 · Environment+1 more — $1,390 · EnvironmentBALLET ARIZONA — $221,800 · Arts & CultureTHE HEARD MUSEUM — $30,000 · Arts & CultureMUSICAL INSTRUMENT MUSEUM — $10,000 · Arts & Culture+5 more — $12,000 · Arts & CultureST MARY'S FOOD BANK ALLIANCE — $200,000 · Food & NutritionRosies House A Music Academy for Children Inc — $150,000 · Housing & Shelter
Health$1,695,000Human Services$1,235,000Other$1,232,665Environment$337,228Arts & Culture$273,800Food & Nutrition$200,000Housing & Shelter$150,000

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetBanner Health Foundation — $1,575,000 over 5y, 1.5% of budgetHospice of the Valley — $1,190,000 over 7y, 0.2% of budgetDESERT BOTANICAL GARDEN INC — $335,838 over 6y, 0.3% of budgetBALLET ARIZONA — $221,800 over 6y, 0.9% of budgetTHE NATURE CONSERVANCY — $215,000 over 6y, 0.0% of budgetST MARY'S FOOD BANK ALLIANCE — $200,000 over 7y, 0.0% of budgetRosies House A Music Academy for Children Inc — $150,000 over 5y, 1.6% of budgetARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY — $110,000 over 5y, 0.0% of budgetBARROW NEUROLOGICAL FOUNDATION — $105,000 over 4y, 0.1% of budgetTHE HEARD MUSEUM — $30,000 over 5y, 0.1% of budgetChrysalis Shelter for Victims of Domestic Violence Inc — $25,000 over 1y, 0.5% of budgetRONALD MCDONALD HOUSE CHARITIES OF CENTRAL AND NORTHERN ARIZONA — $20,000 over 3y, 0.2% of budgetSANDRA DAY O'CONNOR INSTITUTE FOR AMERICAN DEMOCRACY — $16,000 over 1y, 1.1% of budgetMUSICAL INSTRUMENT MUSEUM — $10,000 over 2y, 0.0% of budgetCHILD CRISIS ARIZONA — $10,000 over 2y, 0.0% of budgetST JUDE CHILDREN'S RESEARCH HOSPITAL INC — $10,000 over 1y, 0.0% of budgetARIZONA OPERA COMPANY — $5,000 over 1y, 0.1% of budgetPhoenix Children's Hospital — $5,000 over 1y, 0.0% of budgetFLORENCE CRITTENTON SERVICES OF ARIZONA INC — $5,000 over 1y, 0.1% of budgetPHOENIX ART MUSEUM — $2,000 over 1y, 0.0% of budgetPHOENIX SYMPHONY ASSOCIATION — $2,000 over 1y, 0.0% of budgetFRIENDS OF PUBLIC RADIO ARIZONA — $2,000 over 1y, 0.0% of budgetCOLUMBINE GARDEN CLUB — $1,390 over 5y, 2.6% of budgetSCOTTSDALE ARTS — $1,000 over 1y, 0.0% 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.

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.

Virginia G Piper Charitable TrustAZ24× affinity9 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Virginia G Piper Charitable Trust · Jewish Community Foundation of Greater Phoenix · Thunderbirds Charities · Arizona Community Foundation · The Kemper & Ethel Marley Fdn · Arizona Cardinals Foundation · John F Long Foundation Inc · The Foundation for Community and Health Advancement · American Express Foundation · Twiford Foundation · L Roy Papp Charitable Trust · The Herberger Foundation

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 Ottosen Family Foundation 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 · 00%0%1%3%5%your share of their income ↑0%23%45%68%90%share of the org’s income from government
    no gov moneyreceives it· size = income
    0get no government money at all
    8report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–90%
    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 36 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