· Private foundation
A C Kootz 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 FY2024–2025.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| LAKE AREA FREE CLINIC | $1,000 |
| HUMANE ANIMAL WELFARE SOCIETY HAWS | $1,000 |
| CHENEQUA FOUNDATION | $1,000 |
| UNIVERSITY LAKE SCHOOL | $1,000 |
| TALL PINES CONSERVANCY | $1,000 |
| WISCONSIN HUMAN SOCIETY | $1,000 |
| ZOOLOGICAL SOCIETY OF MILWAUKEE | $750 |
| OLD WORLD FOUNDATION | $500 |
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 (FY24–24, $500) land where the poverty rate runs at 5%, against an area that typically sits at 12%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-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.
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.
7 repeat relationships — 7 still active in FY2025, 0 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, 86% of grant dollars renewed an existing relationship; $1k 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
CHENEQUA FOUNDATION2× · 2024–2025 · $3k · revenue 0%
UNIVERSITY LAKE SCHOOL INC2× · 2024–2025 · $2k · revenue -7%
LAKE AREA FREE CLINIC INC2× · 2024–2025 · $2k · revenue 0%
Funded once
HUMANE ANIMAL WELFARE SOCIETY OF WAUKESHA COUNTY INCone grant, 2024 · $1k · revenue +6%- MAMILWAUKEE ART MUSEUM INCone grant, 2024 · $500 · revenue 0%
- WWAGSone grant, 2024 · $500
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 mission of the wisconsin association of lakes is to conserve, enhance, and restore wisconsin's 15,000 lakes to ensure their sustainability for the benefit and collective use and enjoyment for this and future generations.
To protect, conserve, and enhance wisconsin's natural resources by advocating for and supporting county conservation efforts, for current and future generations.
The purpose of the association shall be to restore and conserve wisconsin's waterfowl and wetland resources; to educate state waterfowlers during their progression from natural resource consumer to steward; and to promote governmental…
To share christ's love as we serve the spiritual, physical, intellectual and emotional needs of people entrusted to our care and others whose lives we touch.
Landmark conservancy is a nationally accredited, nonprofit conservation organization serving 20 counties across northwest wisconsin. their mission is to conserve wisconsin's natural legacy for everyone...forever.
To protect environmentally senstive land in waukesha county wisconsin
The wisconsin wildlife federation has a dual mission to engage in conservation education and to advocate for sound conservation policy.
Lake Michigan is one of Wisconsin's greatest assets, and its water is critical to the state's future. The Fund for Lake Michigan is here to help sustain the Lake on behalf of the people and places that depend on it. Our goal is to have a…
We conduct impartial public policy research and analysis to drive informed debate and effective decision-making in the state of wisconsin.
Glacial Lakes Conservancy, as a land trust, is a nonprofit organization that, as part of its mission, actively works to conserve land by undertaking or assisting in land or conservation easement acquisitions.
The museum is an educational institution dedicated to preserving the history and culture of waukesha county.
To conserve the land, water and scenic character of leelanau county, and to provide educational programs to develop an understanding and appreciation of leelanau county's natural heritage.
For reference, the grantee most central to the portfolio’s shape is Humane Animal Welfare Society of Waukesha County Inc and the most unlike its peers is Chenequa Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
9 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. 9 of the 13 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 CHENEQUA FOUNDATION ↗
- Who funds UNIVERSITY LAKE SCHOOL INC ↗
- Who funds LAKE AREA FREE CLINIC INC ↗
- Who funds WISCONSIN HUMANE SOCIETY ↗
- Who funds TALL PINES CONSERVANCY ↗
- Who funds HUMANE ANIMAL WELFARE SOCIETY OF WAUKESHA COUNTY INC ↗
- Who funds MILWAUKEE ART MUSEUM INC ↗
- Who funds LAKE COUNTRY CARING INC ↗
- Who funds FELLOW MORTALS INC ↗
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: Arthur C Kootz Foundation · Merganser Fund Inc · Windhover Foundation Inc · Baird Foundation Inc · Jean & Thomas Harbeck Family Foundation · Emil Ewald Family Foundation Inc · Greater Milwaukee Foundation Inc · Renaissance Charitable Foundation Inc · Ge Aerospace Foundation · National Philanthropic Trust · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund
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 A C Kootz 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.
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.
Warm introductions · Powered by PlinthPlus
How do I get to A C Kootz Foundation?
Find your warmest path to A C Kootz 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.