Montana · Nonprofit
OneGreenThing
OneGreenThing (Montana) receives grants from 3 organizations whose IRS filings report $52,537 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($51,500). 2 of them have funded it in more than one year, and 98% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $59k
- Funders on record
- 3
- Grants received
- $53k
- Net assets
- $41k
What OneGreenThing does
Mission
Educational Activities on Climate and Environmental Action
As stated on its FY2025 Form 990-EZ.
Programs
Building Public Awareness about Climate Policy Solutions OneGreenThing reaches over 50000 individuals to inform them of policy solutions that exist ways to support how to apply their individual talents to solutions
$17,330 spent33% of program spendingThe expansion of social media and newsletter presence in the climate solutions space Driven by the Service Superpower Assessment tool individuals gain insights into personal contributions to climate solutions Across all platforms the reach is over 50000 individuals
$17,330 spent33% of program spendingDesigning executing educational programs OneGreenThing has designed organized and led seminars and webinars for groups including collaborations with UTA Foundation Climate Reality Project the Plastic Pollution Coalition Made Safe RARE Climate Mental Health Network HEFN Grantmakers in Health and others In 2025 the reach was over 30000000
$17,330 spent33% of program spending
The 3 programs described on its FY2025 Form 990-EZ. Program spending in total: $51,990.
The organization over time
Each line starts at 100 in 2021, so what you read is the shape rather than the size: 150 means half as much again as 2021, 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 2021 to 2022, from $50k to $39k (−22%).
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 OneGreenThing’s revenue is contributions — more reliant on donations than three-quarters of its peers (92% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 5 reported years ran a deficit.
Leadership and staff
Board chair
Melinda Simon
Board Chair
As listed on its FY2025 Form 990-EZ.
Who funds it, year by year
2022 → 2023: the base broadened from 1 funder to 2 funders, grant income rose $17 → $11k.
2 of 3 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 98% 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 OneGreenThing’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
OneGreenThing leans on a few funders — its largest provides 98% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
98% 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 OneGreenThing.
Largest funder’s share by year: 2022 100% · 2023 100% — broadly stable.
“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
98% of OneGreenThing's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $1k that is directly attributable, 100% of it comes from funders outside Montana, across 1 state.
Funder states come from each funder’s own filing. $52k 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
OneGreenThing runs a healthier operating margin than half 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 OneGreenThing
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 Montana
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
0%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for OneGreenThing: 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 OneGreenThing?
- OneGreenThing (Montana) receives grants from 3 organizations whose IRS filings report $52,537 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($51,500). 2 of them have funded it in more than one year, and 98% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does OneGreenThing have?
- IRS filings report 3 organizations giving $52,537 in grants to OneGreenThing, 2 of which have funded it in more than one year.
- Who is the largest funder of OneGreenThing?
- FIDELITY INVESTMENTS CHARITABLE GIFT FUND is the largest funder on record, with $51,500 in grants. The full list of funders is on this page.
- How can an organization like OneGreenThing find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Montana. 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 OneGreenThing →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2021–2025), and the filings of 3 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