Michigan · Nonprofit
Thumb Land Convervancy
Thumb Land Convervancy (Michigan) receives grants from 5 organizations whose IRS filings report $460,000 to it, the largest being THE CARLS FOUNDATION ($250,000). 1 of them have funded it in more than one year.
- Revenue FY2025
- $963k
- Funders on record
- 5
- Grants received
- $460k
- Net assets
- $1.8M
What Thumb Land Convervancy does
Mission
The Thumb Land Conservancy works in Michigan's Thumb region to protect natural areas, promote passive outdoor recreation, and educate the public through materials and programs
As stated on its FY2025 Form 990.
Programs
Morley Sanctuary TLC preserved 113-acre property with 93 acres of imperiled lakeplain prairie wetland. TLC worked with Bangor Township to plan nature park. TLC coordinated with Ducks Unlimited and USFWS to plan wetland restoration
$775,549 spent$795,549 earned by the program75% of program spendingTouma Family Sanctuary TLC preserved 31 acres of imperiled dune and swale complex as part of our larger Southern Lake Huron Coastal Park project. TLC began site inspection for wetland and vegetative restoration.
$201,411 spent$140,000 earned by the program19% of program spendingCunningham Connector Sanctuary TLC preserved 5 acres of imperiled dune and swale complex as part of our larger Southern Lake Huron Coastal Park project.
$62,609 spent6% of program spending
The 3 programs described on its FY2025 Form 990, listed largest first by expense. Program spending in total: $1,039,569.
The organization over time
Each line starts at 100 in 2020, so what you read is the shape rather than the size: 150 means half as much again as 2020, 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 2024 to 2025, from $839k to $1.8M (+110%).
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.
100% of Thumb Land Convervancy’s revenue is contributions — more reliant on donations than three-quarters of its peers (88% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 6 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.
Chief executive
William C Collins
Executive Director
As listed on its FY2025 Form 990.
Who funds it, year by year
2020 → 2023: the base narrowed from 3 funders to 2 funders, grant income fell $240k → $200k.
3 of 5 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 24% 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 Thumb Land Convervancy’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
Thumb Land Convervancy leans on a few funders — its largest provides 54% of grant income and the top three 87%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2020 63% · 2023 50% — 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
100% of Thumb Land Convervancy's grant income comes from Michigan funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $110k arriving through sponsors registered in 1 state 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
Thumb Land Convervancy has grown faster than three-quarters of the 2,433 environment nonprofits its size.
this organization peer median middle 50% of peers· 2,433 environment nonprofits $100k–$1M, FY2025
Organizations like Thumb Land Convervancy
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 Michigan
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
100% of spending goes to programs.
Governance
Public support
100%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for Thumb Land Convervancy: 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 Thumb Land Convervancy?
- Thumb Land Convervancy (Michigan) receives grants from 5 organizations whose IRS filings report $460,000 to it, the largest being THE CARLS FOUNDATION ($250,000). 1 of them have funded it in more than one year.
- How many funders does Thumb Land Convervancy have?
- IRS filings report 5 organizations giving $460,000 in grants to Thumb Land Convervancy, 1 of which have funded it in more than one year.
- Who is the largest funder of Thumb Land Convervancy?
- THE CARLS FOUNDATION is the largest funder on record, with $250,000 in grants. The full list of funders is on this page.
- How can an organization like Thumb Land Convervancy find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Michigan. 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 Thumb Land Convervancy →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2020–2025), 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