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· Private foundation

John and Mary Willis 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.

$23k
Granted FY2023
3
Grants FY2023
2
States reached
$10k
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 2023.

Health$125kEnvironment$74kEducation$7kPhilanthropy$3kOther$0
02FY2023 · 3 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2023

  • Under $10k1 grant · $3k
  • $10k–50k2 grants · $20k
$10,000
Median grant
2
States reached
$6k
Total assets
Largest grants
RecipientAmount
RUSH ANCHOR CROSS SOCIETY - RUSH UNIVERSITY MEDICAL CENTER$10,000
BAPTIST HEALTH SOUTH FLORIDA FOUNDATION$10,000
EVERGLADES FOUNDATION$2,500
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:

Dollar for dollar, its grants (FY17–23) land where the poverty rate runs at 14%, against an area that typically sits at 12%. 100% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 12%HENRY FORKS FOUNDATION: $500 → 12%GUIDE TRUST FOUNDATION: $2k → 13%BAPTIST HEALTH SOUTH FLORIDA FOUNDATION: $10k → 15%HALTER WILDLIFE INC: $150 → 10%PURDUE FOR LIFE FOUNDATION: $1k → 19%TROUT UNLIMITED: $25k → 14%BAPTIST HEALTH FOUNDATION: $10k → 15%ISLAMADORA FIRE DEPARTMENT: $150 → 13%BAPTIST HEALTH SOUTH FLORIDA FOUNDATION: $10k → 15%RUSH UNIVERSITY MEDICAL CENTER: $25k → 14%GUIDE TRUST FOUNDATION: $3k → 13%BAPTIST HEALTH SOUTH FLORIDA FOUNDATION: $10k → 15%RUSH ANCHOR CROSS: $25k → 14%BAPTIST HEALTH SOUTH FLORIDA FOUNDATION: $10k → 15%TROUT UNLIMITED: $20k → 14%BAPTIST HEALTH SOUTH FLORIDA FOUNDATION: $10k → 15%TROUT UNLIMITED: $20k → 14%EVERGLADES FOUNDATION: $3k → 15%RUSH UNIVERSITY MEDICAL CENTER: $15k → 14%EVERGLADES FOUNDATION: $1k → 15%RUSH UNIVERSITY MEDICAL CENTER: $10k → 14%RUSH UNIVERSITY MEDICAL CENTER: $5k → 14%U OF C BOOTH SCHOOL BUSINESS: $5k → 14%U OF C BOOTH SCHOOL OF BUSINESS: $1k → 14%RUSH ANCHOR CROSS SOCIETY - RUSH UNIVERSITY MEDICAL CENTER: $10k → 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.
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.

74%of every dollar goes to organizations it has funded before.
$174k · 4 repeat orgs$60k to everyone else

4 repeat relationships: 2 still active in FY2023, 2 since wound down; 1 grantees were first funded in FY2023 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

4
11

Total granted

$174k
$50k

Median revenue growth · since first grant

+102%
+119%

Still filing today

75%
45%

New vs renewed · share of each year

In FY2023, 56% of grant dollars renewed an existing relationship; $10k went to new ones.

50%100%’17’18’19’20’21’22’23
RenewedFirst-time

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

’17’18’19’20’21’22’23
HealthEnvironmentEducationOther
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

  • RU
    Rush University Medical Center
    4× · 2018–2021 · $55k · revenue +39%
  • BH
    Baptist Health South Florida Foundation Inc
    5× · 2019–2023 · $50k · revenue +107%
  • THE EVERGLADES FOUNDATION INC
    2× · 2021–2023 · $4k · revenue +102%

Funded once

  • IG
    Individual grant recipient
    one grant, 2017 · $25k
  • BH
    BAPTIST HEALTH FOUNDATION
    one grant, 2018 · $10k
  • UO
    U OF C BOOTH SCHOOL BUSINESS
    one grant, 2018 · $5k
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
Archbold Expeditions Inc

Archbold expeditions, inc.'s mission is to build and share the scientific knowledge needed to protect the life, lands, and waters of the heart of florida and beyond.

Unclassified
2
World Wildlife Fund Inc

Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)

Environment
3
Sustainable Fisheries Partnership Foundation

To engage and catalyze global seafood supply chains in rebuilding depleted fish stocks and reducing the environmental impacts of fishing and fish farming.

Animals
4
Florida Conservation Group Inc

Mission is to seek protection of land and water resources through restoration and conservation; and conducting education and outreach on the ecological and economic importance of natural lands. we protect land from development and protect…

Environment
5
Gulf Fishery Research Foundation
Environment
6
The Coral Reef and Marine Science Foundation Inc C/O James Bildner
—
7
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
8
The Quebec-Labrador Foundation Inc

The program mission of the quebec-labrador foundation u.s. is defined by a regional component (new england and eastern canada), and an international component, which ties our regional model to a global conservation network. qlf's program…

Philanthropy
9
Reef Environmental Education Foundation

Reef environmental education foundation (reef) was established as a nonprofit organization in 1990. reef conserves marine environments worldwide. our mission is to protect biodiversity and ocean life by actively engaging and inspiring the…

Recreation & Sports
10
Huron Pines Resource Conservation & Development Council Inc

It is our mission at huron pines to conserve and enhance northern michigan's natural resources to ensure healthy water, protected places and vibrant communities. for alomst 50 years, our work across the forests, lakes and streams of…

Environment
11
Hudson River Foundation for Science and Environmental Research Inc

The mission of the hudson river foundation is to inspire and inform action through science and engaging people to enhance the hudson river, estuary, and watershed (see schedule o).

Environment
12
Resource Renewal Institute

The resource renewal institute facilitates the creation, development and implementation of practical strategies to solve the entire complex environmental problem by addressing it comprehensively.

Environment
How this is measured
The grantee most central to the portfolio’s shape is American Prairie Foundation; the most unlike its peers is Rush University Medical Center. 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

8 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. 8 of the 16 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)
3
Early backer (in before they grew)
8/8
Grantees still filing
7/8
Grew since first funded

Where the money sits, by cause and then by grantee

TROUT UNLIMITED: $65,000 · OtherTROUT UNLIMITEDIndividual grant recipient: $25,000 · OtherIndividual grant recipientRUSH ANCHOR CROSS SOCIETY - RUSH UNIVERSITY MEDICAL CENTER: $10,000 · OtherRUSH ANCHOR CROSS SOCIETY - RUSH UNIVERSITY MEDICAL CENTERBAPTIST HEALTH FOUNDATION: $10,000 · OtherBAPTIST HEALTH FOUNDATIONU OF C BOOTH SCHOOL BUSINESS: $5,000 · Other+6 more: $6,800 · Other+6 moreRush University Medical Center: $55,000 · HealthRush University Medical CenterBaptist Health South Florida Foundation Inc: $50,000 · HealthBaptist Health South Florida Foundation IncTHE EVERGLADES FOUNDATION INC: $3,500 · EnvironmentAMERICAN PRAIRIE FOUNDATION: $2,500 · EnvironmentPurdue Research Foundation: $1,000 · Education
Other$121,800Health$105,000Environment$6,000Education$1,000

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 budgetRush University Medical Center: $55,000 over 4y, 0.0% of budgetBaptist Health South Florida Foundation Inc: $50,000 over 5y, 0.0% of budgetTHE EVERGLADES FOUNDATION INC: $3,500 over 2y, 0.0% of budgetAMERICAN PRAIRIE FOUNDATION: $2,500 over 1y, 0.0% of budgetGuides Trust Foundation Inc: $2,000 over 1y, 1.8% of budgetPurdue Research Foundation: $1,000 over 1y, 0.0% of budgetHENRYS FORK FOUNDATION INC: $500 over 1y, 0.0% of budgetHALTER WILDLIFE INC: $150 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.

  • Who funds Rush University Medical Center ↗
  • Who funds Baptist Health South Florida Foundation Inc ↗
  • Who funds THE EVERGLADES FOUNDATION INC ↗
  • Who funds AMERICAN PRAIRIE FOUNDATION ↗
  • Who funds Guides Trust Foundation Inc ↗
  • Who funds Purdue Research Foundation ↗
  • Who funds HENRYS FORK FOUNDATION INC ↗
  • Who funds HALTER WILDLIFE INC ↗

How much its grantees rely on government

Each dot is one organization John and Mary Willis Foundation funds: left to right is the share of its income from government, bottom to top the share from John and Mary Willis Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 30%0%1%3%5%funder's share of their income ↑0%15%30%45%60%share of the org’s income from government →
    no gov moneyreceives it· size = income
    3get no government money at all
    0rely on government for over half their income
    ⤢ axis zoomed · 0–60%
    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 John and Mary Willis Foundation?

    Find your warmest path to John and Mary Willis 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 16 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 2023, released 2023. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Possibly out of date. A more recent filing (FY2025) is on record and reports no grant expense, so the figures above are from FY2023, the most recent year this funder made grants.

    Source object · view filing

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