· Private foundation
Siron Foundation co Jeffrey Sartell
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, FY2017 to 2025.
Where the money goes
Grants by size, and the largest recipients.
| Recipient | Amount |
|---|---|
| Rock County Humane Society | $5,000 |
| Make-A-Wish Foundation | $5,000 |
| Sisters of St Benedict | $4,000 |
| Rock Prairie Presbyterian Church | $4,000 |
| St Labre Indian School | $3,000 |
| Spirit Horse Equine Rescue | $3,000 |
| Americaon Heart Association | $3,000 |
| Hoo's Woods Raptor Center | $2,000 |
| Salvation Army | $2,000 |
| Guiding Eyes For The Blind | $2,000 |
| Eisenhower Foundation | $1,000 |
| Janesville Performing Arts Center | $1,000 |
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 (FY17–25, $23k) land where the poverty rate runs at 10%, against an area that typically sits at 11%. 26% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.
How this is measured
Which US states its grants reach
How this is measured
Where the work is directed
The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.
About 9% of Siron Foundation co Jeffrey Sartell’s grant dollars are earmarked for a different county than the recipient’s own address.
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
23 repeat relationships: 9 still active in FY2025, 14 since wound down; 3 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, 71% of grant dollars renewed an existing relationship; $10k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- THTIGER HAVEN INC6× · 2019–2024 · $21k · revenue +12%
- GEGUIDING EYES FOR THE BLIND INC5× · 2020–2025 · $10k · revenue +66%
- TEThe Eisenhower Foundation6× · 2017–2025 · $8k · revenue +34%
Funded once
- THTHE HUMANE SOCIETY OF SOUTHERN WISCONSIN INCgraduatedone grant, 2018 · $10k · revenue +26%
- TATHE AMERICAN FILM INSTITUTEgraduatedone grant, 2017 · $3k · revenue +30%
- IGIndividual grant recipientone grant, 2022 · $2k
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.
Founded in 1877, american humane association, dba american humane society (american humane) is committed to ensuring the safety, welfare and well-being of animals. our leadership programs are first to serve in promoting and nurturing the…
World animal protection is a global organization working to end factory farming and wildlife exploitation. we expose cruel systems, promote animal-friendly alternatives, and influence policy change. for over 75 years, we've been rewriting…
See schedule odedicated to rescuing, protecting and providing sanctuary for elephants worldwide. our founding directors and elephant care specialist consult internationally for the wellbeing of captive elephants. currently based in brazil,…
Naples zoo is accredited by the american zoo & aquarium association (aza) and has numerous animal exhibits placed on its 45-acre site. (continued on schedule o)each exhibit is unique and designed to simulate typical conditions for the…
Protecting india's precious wildlife from poaching, habitat loss, and human exploitation since 1995.
Utah's hogle zoo creates champions for wildlife and is our community's gateway to animals, connecting our visitors with the natural world and engaging them in wildlife conservation action locally and worldwide.
International Elephant Foundation (IEF) creates a sustainable future for elephants. We generate and effectively invest resources to support elephant conservation, education, research, and management programs worldwide. Through our passion,…
The Abraham Foundation is on a mission to protect threatened animals, wild and domestic, who have no voice of their own.
The association is an educational organization dedicated to the advancement of zoological parks and aquariums in the areas of species conservation, animal welfare, and conservation education.
To prevent cruelty to animals, we promote enacting and enforcing good public policies. enacting good laws depends upon electing good lawmakers, and we remind voters which candidates care about and support animal issues.
The jacksonville zoo & gardens' mission is connecting our community with wildlife and wild places. our vision is a vibrant community energized by a connection to nature that enriches lives and inspires all to preserve and protect our…
The marine mammal center advances global ocean conservation through marine mammal rescue and rehabilitation, scientific research, and education. the center's work is guided and inspired by a shared vision of a healthy ocean for marine…
How this is measured
21 grantees tracked through their own filings, 2017–2026.
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 2026, not grant rows in a single year, so this will not match the grant count on the cover. 21 of the 33 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 HOLLYWOOD HERITAGE ↗
- Who funds TIGER HAVEN INC ↗
- Who funds GUIDING EYES FOR THE BLIND INC ↗
- Who funds THE HUMANE SOCIETY OF SOUTHERN WISCONSIN INC ↗
- Who funds The Eisenhower Foundation ↗
- Who funds MARA ELEPHANT PROJECT USA INC ↗
- Who funds EVERYONE COOPERATING TO HELP OTHERS INC ↗
- Who funds MILTON HISTORICAL SOCIETY ↗
- Who funds APTIV FOUNDATION INC ↗
- Who funds JANESVILLE PERFORMING ARTS CENTER INC ↗
- Who funds GENTLE GIANTS ↗
- Who funds LION HABITAT RANCH INC ↗
- Who funds MAKE-A-WISH FOUNDATION OF ILLINOIS INC ↗
- Who funds GENERAL PATTON MEMORIAL INC ↗
- Who funds American Heart Association Inc ↗
- Who funds THE AMERICAN FILM INSTITUTE ↗
- Who funds HOOS WOODS RAPTOR CENTER ↗
- Who funds ANIMAL RECOVERY MISSION INC ↗
- Who funds NATIONAL MUSEUM OF THE AMERICAN SAILOR FOUNDATION ↗
- Who funds GLAUCOMA RESEARCH FOUNDATION ↗
- Who funds Keepers of the Wild ↗
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: Community Foundation of Southern Wisconsin Inc · Alliant Energy Foundation Inc · Janesville Foundation Inc · The Blackbaud Giving Fund · Paypal Charitable Giving Fund · Network for Good · Vanguard Charitable Endowment Program · 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 Siron Foundation co Jeffrey Sartell funds: left to right is the share of its income from government, bottom to top the share from Siron Foundation co Jeffrey Sartell. Bigger dots raise more.
How this is measured
Play a game based on Siron Foundation co Jeffrey Sartell’s filings →