California · Nonprofit
MAMMOTH COMMUNITY FOUNDATION
MAMMOTH COMMUNITY FOUNDATION (California) receives grants from 9 organizations whose IRS filings report $89,349 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($56,450). 2 of them have funded it in more than one year, and 77% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly. MAMMOTH COMMUNITY FOUNDATION administers funds for other donors, so those contributions arrive into funds it holds rather than supporting a program it runs itself.
Hosts funds for others
MAMMOTH COMMUNITY FOUNDATION administers funds on behalf of other donors. The grants recorded as coming in are contributions into those funds, so they count custody rather than support for a programMAMMOTH COMMUNITY FOUNDATION runs itself. This page therefore states the flows and does not draw the comparisons it would draw for an operating charity: concentration, funder retention, grant dependency and the peer field are all left out, because each of them would read a vehicle as if it were a program.
Paid out
$477k
Recipients
8
Contributions on record
$130k
Donors on record
10
Payments out run 3.7x the contributions on record, which says the incoming side is incomplete rather than that the vehicle is unusually busy: most donors to a fund like this are individuals, who file no return for us to read.
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- Mammoth Lakes Tourismlocal
- George and Ruth Bradford Foundationportfolio match
- League of California Community Foundationsportfolio match
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.
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.
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
Who funds it, year by year
2020 → 2023: the base narrowed from 6 funders to 1 funder, grant income fell $32k → $9k.
4 of 9 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 77% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
Left out of every figure on this page: $41k from one payer (the payer shares this organization's board, largest Mammoth Lakes Chamber of Commerce). These are real filings, and they are not money MAMMOTH COMMUNITY FOUNDATION raised.
From the IRS filings of MAMMOTH COMMUNITY FOUNDATION’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.
Where its funders are
77% of MAMMOTH COMMUNITY FOUNDATION'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 $21k that is directly attributable, 75% of it comes from California funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $69k arriving through sponsors registered in 4 statesis 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.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first.
- Mammoth Lakes TourismlocalCA · funds 21 organizations near you
- George and Ruth Bradford Foundationportfolio matchits grantees resemble your mission
- League of California Community Foundationsportfolio matchits grantees resemble your mission
- Amador Community Foundation Incportfolio matchits grantees resemble your mission
- The Foor Foundationportfolio matchits grantees resemble your mission
- California Fire Foundationportfolio matchits grantees resemble your mission
- Community Foundation of Mendocino Countyportfolio matchits grantees resemble your mission
- One Valley Foundationportfolio matchits grantees resemble your mission
- Golden Valley Bank Communityportfolio matchits grantees resemble your mission
- North Valley Community Foundationportfolio matchits grantees resemble your mission
- John & Marilyn Olson Family Foundationportfolio matchits grantees resemble your mission
- Christine & Jalmer Berg Foundationportfolio matchits grantees resemble your mission
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
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
100%
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 MAMMOTH COMMUNITY FOUNDATION: 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. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds MAMMOTH COMMUNITY FOUNDATION?
- MAMMOTH COMMUNITY FOUNDATION (California) receives grants from 9 organizations whose IRS filings report $89,349 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($56,450). 2 of them have funded it in more than one year, and 77% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly. MAMMOTH COMMUNITY FOUNDATION administers funds for other donors, so those contributions arrive into funds it holds rather than supporting a program it runs itself.
- How many funders does MAMMOTH COMMUNITY FOUNDATION have?
- IRS filings report 9 organizations giving $89,349 in grants to MAMMOTH COMMUNITY FOUNDATION, 2 of which have funded it in more than one year.
- Who is the largest funder of MAMMOTH COMMUNITY FOUNDATION?
- FIDELITY INVESTMENTS CHARITABLE GIFT FUND is the largest funder on record, with $56,450 in grants. The full list of funders is on this page.
- How can an organization like MAMMOTH COMMUNITY FOUNDATION 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.
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 9funders 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 August 27, 2026. What this page cannot tell you · view filing