· Private foundation
The Middendorf 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.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2018 to 2025.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- $10k–50k2 grants · $45k
- $50k–250k9 grants · $900k
- $250k+1 grant · $325k
| Recipient | Amount |
|---|---|
| MISSIONARY SOCIETY SALESIAN SISTERS | $325,000 |
| OUR LADY OF MISSISSIPPI VALLEY | $150,000 |
| SANIBEL CAPTIVA CONSERVATION FOUNDATION | $125,000 |
| FISH OF SANIBEL | $125,000 |
| KATIE'S HOUSE INC | $125,000 |
| COMMUNITY HOUSING AND RESOURCES INC | $100,000 |
| DING DARLING WILDLIFE SOCIETY | $75,000 |
| SANIBEL COMMUNITY ASSOCIATION | $75,000 |
| UNIVERSITY OF CINCINATTI ATHLETICS | $75,000 |
| UNITED WAY OF LEE COUNTY | $50,000 |
| CLINIC FOR REHAB OF WILDLIFE | $25,000 |
| MAYO CLINIC | $20,000 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its human-services grants (FY18–25, $705k) land where the poverty rate runs at 10%, against an area that typically sits at 9%. 86% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.
How this is measured
Which US states its grants reach
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +64% since the first grant, against -1% for those funded once.
12 repeat relationships: 10 still active in FY2025, 2 since wound down; 1 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 92% of grant dollars renewed an existing relationship; $100k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
FISH OF SANIBEL-CAPTIVA INC7× · 2018–2025 · $605k · revenue +111%- SCSANIBEL COMMUNITY ASSOCIATION INC7× · 2018–2025 · $355k · revenue +45%
SANIBEL-CAPTIVA CONSERVATION FOUNDATION6× · 2020–2025 · $320k · revenue +115%
Funded once
- OLOUR LADY OF THEone grant, 2018 · $225k
- MSMISSIONARY SOCIETYone grant, 2018 · $145k
- OLOUR LADY OF THE MISSISSIPPI ABBEY TRAPPISTINE NUNS INCone grant, 2023 · $100k
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.
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.
The sanibel & captiva islands association of realtors is the trusted voice and advocate for real estate. real estate professionals adding value to our community.
As a public grantmaking charity serving the islands of sanibel and captiva, our mission is to inspire philanthropy, leadership and collaboration for the vitality of the island communnity.
University of South Florida Foundation, Inc.'s mission is to provide charitable and educational aid to the University of South Florida; to promote education and other related activities of the University; and to encourage research,…
Improvements of a civic nature to residents and visitors of captiva florida
Saint leo is an inventive global catholic liberal arts university thatfosters a personal & inclusive community which educates, prepares, &develops students for success, and consists of diverse learners whoboldly confront the challenges of…
UF Health's mission is to promote health through outstanding and high-quality patient care, innovative and rigorous education in the health professions and biomedical sciences, and high-impact research across the spectrum of basic,…
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
To promote the prosperity of our members and preserve the quality of life in our community.
See schedule ouniversity corporation for atmospheric research (ucar), on behalf of, and in cooperation with its member university members, is engaged in the management of long-term atmospheric and related research and educational…
St. marys university, as a catholic marianist university, fosters the formation of people in faith and educates leaders for the common good through community, integrated liberal arts and professional education, and academic excellence.
To encourage, solicit, receive and administer gifts and bequests of property and funds for scientific, educational and charitable purposes, all for the advancement of florida international university and its objectives (see schedule o for…
Community first credit union of florida's mission is to provide the highest in quality financial solutions for every stage of life.
How this is measured
12 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. 12 of the 25 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.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
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 FISH OF SANIBEL-CAPTIVA INC ↗
- Who funds SANIBEL COMMUNITY ASSOCIATION INC ↗
- Who funds SANIBEL-CAPTIVA CONSERVATION FOUNDATION ↗
- Who funds DING DARLING WILDLIFE SOCIETY INC ↗
- Who funds The United Way of Lee County Inc ↗
- Who funds Community Housing and Resources Inc ↗
- Who funds KATIE'S HOUSE INC ↗
- Who funds MAYO CLINIC ↗
- Who funds SANIBEL SEA SCHOOL INC ↗
- Who funds CHARLOTTE LATIN SCHOOLS ↗
- Who funds UNITED WAY WORLDWIDE ↗
- Who funds THE UNIVERSITY OF CINCINNATI FOUNDATION ↗
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.
Open a dossier: Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
How this is measured
How much its grantees rely on government
Each dot is one organization The Middendorf Family Foundation funds: left to right is the share of its income from government, bottom to top the share from The Middendorf Family Foundation. Bigger dots raise more.
- Sanibel-Captiva Conservation Foundation: 4% of income from government
- The United Way of Lee County Inc: 1% of income from government
How this is measured
Play a game based on Middendorf Family’s filings →