Wisconsin · Nonprofit
GREEN-ROCK AUDUBON SOCIETY INC
GREEN-ROCK AUDUBON SOCIETY INC (Wisconsin) receives grants from 5 organizations whose IRS filings report $189,081 to it, the largest being THOMAS O'BRIEN FOUNDATION XXX-XX-XXXX ($103,871). 3 of them have funded it in more than one year.
- Revenue FY2025
- $72k
- Funders on record
- 5
- Grants received
- $189k
- Net assets
- $1.1M
What Green-Rock Audubon Society Inc does
Mission
Preservation of the habitat for fish, birds, and other wildlife
As stated on its FY2025 Form 990.
Programs
Remove invasive plant species from several properties to return it to its natural state. In 2022 approx 837 hrs were spent maintaining trails, torching garlic mustard plants, applying herbicide, building bird houses and placing them, creating fire breaks.
$56,603 spent96% of program spendingPrepare quarterly newsletter and mail to all members, local schools, and elected officials. Also public programs are sponsored in various communities regarding conservation and ecology for animals and land useage scholarship funds distributed to assist higher education of related studies to ecological work.
$2,114 spent4% of program spending
The 2 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $58,717.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2017 to 2018, from $816k to $1.3M (+58%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2019 6% · 2020 42% · 2021 18% · 2022 22% · 2023 2% · 2024 7% · 2025 6%. Grants only. Government contracts and fees sit inside program revenue.
54% of GREEN-ROCK AUDUBON SOCIETY INC’s revenue is contributions — about as donation-reliant as the typical peer (92% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 0 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Board chair
Steve Reischel
Member chair
As listed on its FY2025 Form 990.
Who funds it, year by year
2018 → 2023: the base broadened from 1 funder to 2 funders, grant income fell $51k → $27k.
3 of 5 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 45% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of GREEN-ROCK AUDUBON SOCIETY INC’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
GREEN-ROCK AUDUBON SOCIETY INC leans on a few funders — its largest provides 55% of grant income and the top three 94%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
45% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund GREEN-ROCK AUDUBON SOCIETY INC.
Largest funder’s share by year: 2018 100% · 2020 100% · 2021 71% · 2022 81% · 2023 57% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
GREEN-ROCK AUDUBON SOCIETY INC draws 100% of its grant income from funders outside Wisconsin, across 2 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $85k arriving through sponsors registered in 2 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
GREEN-ROCK AUDUBON SOCIETY INC has grown faster than three-quarters of the 2,195 environment nonprofits its size.
this organization peer median middle 50% of peers· 2,195 environment nonprofits under $100k, FY2025
Organizations like GREEN-ROCK AUDUBON SOCIETY INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Wisconsin
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
95% of spending goes to programs.
Governance
Public support
96%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Part of a family of 1 related entity
- National Audubon Society · exempt
Screen this organization
A dated, signed PDF of the compliance screen for GREEN-ROCK AUDUBON SOCIETY INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds GREEN-ROCK AUDUBON SOCIETY INC?
- GREEN-ROCK AUDUBON SOCIETY INC (Wisconsin) receives grants from 5 organizations whose IRS filings report $189,081 to it, the largest being THOMAS O'BRIEN FOUNDATION XXX-XX-XXXX ($103,871). 3 of them have funded it in more than one year.
- How many funders does GREEN-ROCK AUDUBON SOCIETY INC have?
- IRS filings report 5 organizations giving $189,081 in grants to GREEN-ROCK AUDUBON SOCIETY INC, 3 of which have funded it in more than one year.
- Who is the largest funder of GREEN-ROCK AUDUBON SOCIETY INC?
- THOMAS O'BRIEN FOUNDATION XXX-XX-XXXX is the largest funder on record, with $103,871 in grants. The full list of funders is on this page.
- How can an organization like GREEN-ROCK AUDUBON SOCIETY INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Wisconsin. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Green-Rock Audubon Society →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 5 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing