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Plinth

· Private foundation

Samuel B O'Brien 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.

$41k
Granted FY2025still arriving
14
Grants FY2025still arriving
4
States reached
$30k
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.

Recreation & Sports$111kArts & Culture$76kEnvironment$25kEducation$20kAnimals$9kInternational$4kFood & Nutrition$500Human Services$150
02FY2025 · 14 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k13 grants · $11k
  • $10k–50k1 grant · $30k
$300
Median grant
4
States reached
$465k
Total assets
Largest grants
RecipientAmount
HISTORIC ARNOLDS PARK$30,000
IOWA GREAT LAKES FOUNDATION$6,000
SHATTUCK ST MARY'S SCHOOL$1,050
DES MOINES METRO OPERA$1,000
HERITAGE CAROUSEL OF DES MOINES$1,000
MILL REEF FUND$500
U OF OKOBOJI JUNIOR TENNIS$300
BRENTON ARBORETUM$256
ANIMAL RESCUE LEAGUE$225
DES MOINES ART CENTER$140
DES MOINES BOTANICAL CENTER$125
IOWA NATURAL HERITAGE FOUNDATION$100
PEARSON LAKES ART CENTER$75
LEWIS AND CLARK COLLEGE$50
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:

Dollar for dollar, your grants (FY19–25) land where the poverty rate runs at 8%, against an area that typically sits at 10%. 21% of your dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.

area typical 10%SHATTUCK ST MARY'S SCHOOL: $5k → 11%DING DARLING WILDLIFE SOCIETY: $5k → 11%BRENTON ARBORETUM: $5k → 5%DES MOINES METRO OPERA: $24k → 6%HISTORIC ARNOLDS PARK: $37k → 7%UNIVERISTY OF IOWA: $5k → 15%SHATTUCK ST MARY'S SCHOOL: $3k → 11%BRENTON ARBORETUM: $756 → 5%DES MOINES METRO OPERA: $17k → 6%HISTORIC ARNOLDS PARK: $35k → 7%SHATTUCK ST MARY'S SCHOOL: $3k → 11%DES MOINES METRO OPERA: $10k → 6%HISTORIC ARNOLDS PARK: $30k → 7%IOWA GREAT LAKES FOUNDATION: $6k → 10%SHATTUCK ST MARY'S SCHOOL: $1k → 11%DES MOINES METRO OPERA: $9k → 6%DICKINSON COUNTY TRAILS BOARD: $4k → 7%IOWA NATURAL HERITAGE FOUNDATION: $5k → 10%SHATTUCK ST MARY'S SCHOOL: $1k → 11%SIMPSON COLLEGE - IOWA HISTORY CENTER: $2k → 6%THE PARK FOUNDATION - ARNOLDS PARK IA: $2k → 7%IOWA NATURAL HERITAGE FOUNDATION: $2k → 10%SHATTUCK ST MARY'S SCHOOL: $1k → 11%SIMPSON COLLEGE - IOWA HISTORY CENTER: $2k → 6%DICKINSON COUNTY TRAILS BOARD: $2k → 7%DES MOINES BOTANICAL CENTER: $1k → 10%SHATTUCK ST MARY'S SCHOOL: $500 → 11%SIMPSON COLLEGE - IOWA HISTORY CENTER: $2k → 6%DICKINSON COUNTY TRAILS BOARD: $500 → 7%IOWA NATURAL HERITAGE FOUNDATION: $1k → 10%SIMPSON COLLEGE - IOWA HISTORY CENTER: $1k → 6%PEARSON LAKES ART CENTER: $300 → 7%IOWA NATURAL HERITAGE FOUNDATION: $1k → 10%DES MOINES METRO OPERA: $1k → 6%U OF OKOBOJI JUNIOR TENNIS: $300 → 7%DES MOINES BOTANICAL CENTER: $500 → 10%DES MOINES METRO OPERA: $1k → 6%DES MOINES BOTANICAL CENTER: $500 → 10%SIMPSON COLLEGE - IOWA HISTORY CENTER: $1k → 6%SIMPSON COLLEGE - IOWA HISTORY CENTER: $1k → 6%DES MOINES METRO OPERA: $1k → 6%FRIENDS OF THE DES MOINES PARKS: $500 → 10%ANIMAL RESCUE LEAGUE: $500 → 10%ANIMAL RESCUE LEAGUE: $500 → 10%BLANK PARK ZOO FOUNDATION: $550 → 10%BLANK PARK ZOO FOUNDATION: $500 → 10%FOOD BANK OF IOWA: $500 → 10%TRHS FOUNDATION - ROOSEVELT HIGH SCHOOL: $1k → 10%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.

94%of every dollar goes to organizations you’ve funded before.
$230k · 18 repeat orgs$16k to everyone else

18 repeat relationships — 12 still active in FY2025, 6 since wound down; 2 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

18
5

Total granted

$230k
$9k

Median revenue growth · since first grant

+31%
+42%

Still filing today

67%
20%

New vs renewed · share of each year

In FY2025, 85% of grant dollars renewed an existing relationship; $6k 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 & CultureEducationEnvironmentAnimalsPhilanthropyFood & 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

  • DM
    DES MOINES METRO OPERA INC
    7× · 2019–2025 · $63k · revenue +83%
  • SM
    SHATTUCK-ST MARY'S SCHOOL
    7× · 2019–2025 · $14k · revenue +13%
  • IN
    IOWA NATURAL HERITAGE FOUNDATION
    7× · 2019–2025 · $9k · revenue +80%

Funded once

  • SU
    State University of Iowa
    one grant, 2019 · $5k
  • TP
    THE PARK FOUNDATION - ARNOLDS PARK IA
    one grant, 2019 · $2k
  • TF
    TRHS FOUNDATION - ROOSEVELT HIGH SCHOOL
    one grant, 2020 · $1k

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
Isabella Stewart Gardner Museum Inc

Organization's mission statement true to the ambitious vision of its founder and her spirit of creative risk-taking, the mission of the isabella stewart gardner museum is: - to bring to life and preserve the rich historic collection; - to…

Arts & Culture
2
Iowa Parks Foundation

Cultivate stewardship through environmental education and research, advocate for adequate funding of park programs and infrasturcture improvements, increase park users and improve the quality of vistor experiences in iowa parks.

3
Iowa Parks and Recreation Assoc

To assist members in the development of their careers and to support lasting parks and recreation systems.

4
Bartlett Arboretum Association Inc

To cultivate and develop an expansive collection of trees, gardens, and plants for all to explore, enjoy and study; and to provide through education and stewardship, a greener, healthier, more beautiful environment.

Environment
5
Idaho Conservation League Inc

Icl's mission is to create a conservation community and pragmatic, enduring solutions that protect and restore the air you breathe, the water you drink, and the land and wildlife you love.

6
The Trustees of Grinnell College

To educate students in the liberal arts through free inquiry and the open exchange of ideas.when grinnell college framed its charter in the iowa territory of the united states in 1846, it set forth a mission to educate its students "for…

Education
7
Iowa State University Foundation

Aligning donor passion and generosity to advance iowa state university's land grant ideals.

Education
8
Dubuque Arboretum Association Inc

To become a cherished destination for all, where vibrant gardens create transformative experiences that connect people, inspire learning, and deepen appreciation for nature.

Environment
9
Denver Zoological Foundation

Inspiring communities to save wildlife for future generations.

Animals
10
Oregon Agricultural Trust

Oregon agricultural trust partners with farmers and ranchers to protect agricultural lands for the benefit of oregons economy, communities, and landscapes.

Environment
11
The Izaak Walton League of America

To conserve, restore and promote the sustainable use and enjoyment of our natural resources, including soil, air, woods, water and wildlife.

Environment
12
Fairchild Tropical Botanic Garden Inc

We harness the power of plants for humankind and share the joy and beauty of tropical gardening with everyone. fairchild tropical botanic garden is a museum of tropical plants within a world famous, 83-acre designed landscape. it was…

Environment

For reference, the grantee most central to the portfolio’s shape is Iowa Natural Heritage Foundation and the most unlike its peers is Lewis & Clark College. 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

14 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. 14 of the 25 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)
2
Early backer (in before they grew)
14/14
Grantees still filing
12/14
Grew since you first funded

Where your money sits — by cause, then by grantee

HISTORIC ARNOLDS PARK INC — $101,750 · Arts & CultureHISTORIC ARNOLDS PARK INCDES MOINES METRO OPERA INC — $63,301 · Arts & CultureDES MOINES METRO OPERA INCBRENTON ARBORETUM INC — $6,825 · Arts & Culture+2 more — $2,095 · Arts & CultureSIMPSON COLLEGE - IOWA HISTORY CENTER — $9,000 · OtherSIMPSON COLLEG…DICKINSON COUNTY TRAILS BOARD — $6,250 · OtherDICKINSON COUN…State University of Iowa — $5,000 · OtherState Universi…DES MOINES BOTANICAL CENTER — $2,475 · OtherDES MOINES BOT…THE PARK FOUNDATION - ARNOLDS PARK IA — $2,400 · OtherTHE PARK FOUND…ANIMAL RESCUE LEAGUE — $1,975 · OtherANIMAL RESCUE …HERITAGE CAROUSEL OF DES MOINES — $1,769 · OtherHERITAGE CAROU…+5 more — $2,075 · Other+5 moreIOWA NATURAL HERITAGE FOUNDATION — $9,340 · EnvironmentIOWA GREAT LAKES FOUNDATION — $6,000 · EnvironmentSHATTUCK-ST MARY'S SCHOOL — $13,950 · Education+1 more — $300 · EducationDING DARLING WILDLIFE SOCIETY INC — $5,250 · AnimalsBLANK PARK ZOO FOUNDATION INC — $1,600 · AnimalsMILL REEF FUND — $3,500 · PhilanthropyFOOD BANK OF IOWA — $500 · Food & Nutrition
Arts & Culture$173,971Other$30,944Environment$15,340Education$14,250Animals$6,850Philanthropy$3,500Food & Nutrition$500

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 budgetHISTORIC ARNOLDS PARK INC — $101,750 over 3y, 0.3% of budgetDES MOINES METRO OPERA INC — $63,301 over 7y, 0.8% of budgetSHATTUCK-ST MARY'S SCHOOL — $13,950 over 7y, 0.0% of budgetIOWA NATURAL HERITAGE FOUNDATION — $9,340 over 7y, 0.0% of budgetBRENTON ARBORETUM INC — $6,825 over 7y, 0.4% of budgetDING DARLING WILDLIFE SOCIETY INC — $5,250 over 2y, 0.1% of budgetMILL REEF FUND — $3,500 over 7y, 0.1% of budgetBLANK PARK ZOO FOUNDATION INC — $1,600 over 5y, 0.0% of budgetEdmundson Art Foundation Inc — $1,170 over 6y, 0.0% of budgetPEARSON LAKES ART CENTER — $925 over 6y, 0.0% of budgetFOOD BANK OF IOWA — $500 over 1y, 0.0% of budgetLEWIS & CLARK COLLEGE — $300 over 3y, 0.0% of budgetPACIFIC CREST TRAIL ASSOCIATION — $125 over 2y, 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.

  • Who funds HISTORIC ARNOLDS PARK INC
  • Who funds DES MOINES METRO OPERA INC
  • Who funds SHATTUCK-ST MARY'S SCHOOL
  • Who funds IOWA NATURAL HERITAGE FOUNDATION
  • Who funds BRENTON ARBORETUM INC
  • Who funds IOWA GREAT LAKES FOUNDATION
  • Who funds DING DARLING WILDLIFE SOCIETY INC
  • Who funds MILL REEF FUND
  • Who funds BLANK PARK ZOO FOUNDATION INC
  • Who funds Edmundson Art Foundation Inc
  • Who funds PEARSON LAKES ART CENTER
  • Who funds FOOD BANK OF IOWA
  • Who funds LEWIS & CLARK COLLEGE
  • Who funds PACIFIC CREST TRAIL ASSOCIATION

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.

Windsor Charitable FoundationIA13.6× affinity4 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Windsor Charitable Foundation · Brenton Foundation · Krause Gentle Foundation · Meredith Corporation Foundation · The Blackbaud Giving Fund · National Philanthropic Trust · Donor Advised Charitable Giving Inc · The Bank of America Charitable Foundation Inc · American Online Giving Foundation Inc · Vanguard Charitable Endowment Program · Fidelity Investments Charitable Gift Fund · Amazonsmile 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 Samuel B O'Brien 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, a single department, or state — and drag the year to watch it move.

2024
202122232425
no gov · 20%0%1%3%5%your share of their income ↑0%23%45%68%90%share of the org’s income from governmentmedian 2%
  • Lewis & Clark College2% of income from government
no gov moneyreceives it· size = income
2get no government money at all
2report 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 25 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