California · Nonprofit
THE MARIN MUSEUM SOCIETY INC
THE MARIN MUSEUM SOCIETY INC (California) receives grants from 7 organizations whose IRS filings report $565,986 to it, the largest being LEONARD & BERYL BUCK FOUNDATION ($342,500). 4 of them have funded it in more than one year.
- Revenue FY2025
- $183k
- Funders on record
- 7
- Grants received
- $566k
- Net assets
- $645k
What The Marin Museum Society Inc does
Mission
Organizations mission is to educate the public about the native indians life and cultural activities.
As stated on its FY2025 Form 990.
Program
Museum enthusiastically reopened after Covid closure; Hired paid staff; launched Aay-ko Indigenous Nature-Based Playgroup granted funded toddler program; created childrens educational program curriculum for Fieldtrips; developed TEK Guide publication (Traditional Ecological Knowledge) Served approximately 5000 Museum visitors
$87,492 spent100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $87,492.
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 2021 to 2022, from $639k to $691k (+8%).
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: 2017 2% · 2021 15% · 2022 8% · 2025 21%. Grants only. Government contracts and fees sit inside program revenue.
99% of THE MARIN MUSEUM SOCIETY INC’s revenue is contributions — more reliant on donations than three-quarters of its peers (64% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 8 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
Dean Hoaglin
Board President and Chair
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 1 funder to 2 funders, grant income rose $500 → $53k.
4 of 7 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 36% 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 THE MARIN MUSEUM SOCIETY INC’s funders (the co-funder graph). Top 6 of 7 funders by total. 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
THE MARIN MUSEUM SOCIETY INC leans on a few funders — its largest provides 61% of grant income and the top three 96%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
100% 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 THE MARIN MUSEUM SOCIETY INC.
Largest funder’s share by year: 2017 100% · 2018 100% · 2019 93% · 2020 81% · 2021 42% · 2022 52% · 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
THE MARIN MUSEUM SOCIETY INC draws 94% of its grant income from funders outside California, across 2 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $203k 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
THE MARIN MUSEUM SOCIETY INC is better cushioned than half of the 11,634 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 11,634 arts & culture nonprofits $100k–$1M, FY2025
Organizations like THE MARIN MUSEUM 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 California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
40% of spending goes to programs.
Governance
Public support
83%
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 THE MARIN MUSEUM 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 THE MARIN MUSEUM SOCIETY INC?
- THE MARIN MUSEUM SOCIETY INC (California) receives grants from 7 organizations whose IRS filings report $565,986 to it, the largest being LEONARD & BERYL BUCK FOUNDATION ($342,500). 4 of them have funded it in more than one year.
- How many funders does THE MARIN MUSEUM SOCIETY INC have?
- IRS filings report 7 organizations giving $565,986 in grants to THE MARIN MUSEUM SOCIETY INC, 4 of which have funded it in more than one year.
- Who is the largest funder of THE MARIN MUSEUM SOCIETY INC?
- LEONARD & BERYL BUCK FOUNDATION is the largest funder on record, with $342,500 in grants. The full list of funders is on this page.
- How can an organization like THE MARIN MUSEUM SOCIETY INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. 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 Marin Museum 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 7 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