California · Nonprofit
Mt Shasta Museum Association DBA Sisson Museum
Mt Shasta Museum Association DBA Sisson Museum (California) receives grants from 5 organizations whose IRS filings report $287,709 to it, the largest being SHASTAREGIONALCOMMUNITYFOUNDATION ($152,999). 3 of them have funded it in more than one year, and 60% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
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.
- Siskiyou Community Services Councillocal
- Montana History Foundationportfolio match
- Myriad Consulting and Training Incportfolio match
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.
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: 2021 16% · 2023 6%. Grants only. Government contracts and fees sit inside program revenue.
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
Who funds it, year by year
2017 → 2023: the base held at 1 funder, grant income fell $10k → $2k.
2 of 5 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 60% 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 Mt Shasta Museum Association DBA Sisson Museum’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
Mt Shasta Museum Association DBA Sisson Museum leans on a few funders — its largest provides 53% of grant income and the top three 92%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
65% 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 Mt Shasta Museum Association DBA Sisson Museum.
Largest funder’s share by year: 2017 100% · 2018 100% · 2019 100% · 2020 100% · 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
60% of Mt Shasta Museum Association DBA Sisson Museum'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 $115k that is directly attributable, 87% of it comes from funders outside California, across 3 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $173k arriving through sponsors registered in 1 stateis 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. Your 5 funders put you under-funded among the 400 organizations that share them.
- Siskiyou Community Services CouncillocalCA · funds 5 organizations near you
- Montana History Foundationportfolio matchits grantees resemble your mission
- Myriad Consulting and Training Incportfolio matchits grantees resemble your mission
- Museums Alaska Incportfolio matchits grantees resemble your mission
- Humanities Washingtonportfolio matchits grantees resemble your mission
- Colorado Humanitiesportfolio matchits grantees resemble your mission
- Humanities Montanaportfolio matchits grantees resemble your mission
- The Candelaria Fundportfolio matchits grantees resemble your mission
- The William G Pomeroy Foundationportfolio matchits grantees resemble your mission
- Indiana Historical Societyportfolio matchits grantees resemble your mission
- Jeffris Family Foundation Ltdportfolio matchits grantees resemble your mission
- Humanities Kansas Incportfolio 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.
Organizations like Mt Shasta Museum Association DBA Sisson Museum
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of 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
100% of spending goes to programs.
Governance
Public support
62%
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 Mt Shasta Museum Association DBA Sisson Museum: 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 Mt Shasta Museum Association DBA Sisson Museum?
- Mt Shasta Museum Association DBA Sisson Museum (California) receives grants from 5 organizations whose IRS filings report $287,709 to it, the largest being SHASTAREGIONALCOMMUNITYFOUNDATION ($152,999). 3 of them have funded it in more than one year, and 60% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does Mt Shasta Museum Association DBA Sisson Museum have?
- IRS filings report 5 organizations giving $287,709 in grants to Mt Shasta Museum Association DBA Sisson Museum, 3 of which have funded it in more than one year.
- Who is the largest funder of Mt Shasta Museum Association DBA Sisson Museum?
- SHASTAREGIONALCOMMUNITYFOUNDATION is the largest funder on record, with $152,999 in grants. The full list of funders is on this page.
- How can an organization like Mt Shasta Museum Association DBA Sisson Museum 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 2017–2025), and the filings of 5funders 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