· 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 you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2018–2025.
Where the money goes
Your grants by size, and where they go.
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 |
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.
Your 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 your grants land in higher-need ZIPs.
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.
Which US states your grants reach
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.
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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +64% since the first grant, against -1% for the ones you 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
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
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
- KHKATIE'S HOUSE INCone grant, 2023 · $100k · revenue -11%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
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.
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.
For reference, the grantee most central to the portfolio’s shape is Sanibel-Captiva Conservation Foundation and the most unlike its peers is Katie's House Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
12 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 2017–2025, 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; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
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 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 KATIE'S HOUSE INC ↗
- Who funds Community Housing and Resources 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 ↗
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.
Open a dossier: Donor Advised Charitable Giving Inc · 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 The Middendorf 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.
- Sanibel-Captiva Conservation Foundation — 4% of income from government
- The United Way of Lee County Inc — 1% of income from government
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.