California · Nonprofit
SAUSALITO HISTORICAL SOCIETY
SAUSALITO HISTORICAL SOCIETY (California) receives grants from 7 organizations whose IRS filings report $147,781 to it, the largest being AMERICAN ENDOWMENT FOUNDATION ($90,000). 3 of them have funded it in more than one year, and 93% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $104k
- Funders on record
- 7
- Grants received
- $148k
- Net assets
- $206k
What Sausalito Historical Society does
Mission
Chief purpose is to preserve Sausalito's history and educate the general public about the city's history.
As stated on its FY2025 Form 990-EZ.
Programs
The Society archives historical items and makes them available to all via our website. Tracking has not been utilized for the full year. Our estimate is about 3500 visitors.
$4,144 spent46% of program spending2. Maintains and staffs via volunteers, a museum in the downtown area. About 8500 folks visit this small building a year.
$2,200 spent25% of program spending3. Maintains a historical exhibit of ship building in Sausalito during WWII. About 35,000 visit this each year. this exhibit has only cleaning costs this year as a major renovation is planned in the coming twelve months.
$150 spent2% of program spending4. Sponsors History talks at various locations. They are attended by about 750.
$375 spent4% of program spending5. Creates scheduled walking tour around the city that gives participants details of the historic buildings. About 350 participate. The tours are generally groups of ten or fewer.
$150 spent2% of program spendingMembers dress up as California historical figures and visit third and fourth grade classes to teach history. We print a small booklet to be given to the students. Please note that we do not made grants. We may do so in the future.
$1,930 spent22% of program spending
The 6 programs described on its FY2025 Form 990-EZ. Program spending in total: $8,949.
Who funds it, year by year
2018 → 2023: the base held at 1 funder, grant income fell $5k → $16.
5 of 7 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 93% 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 SAUSALITO HISTORICAL SOCIETY’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
SAUSALITO HISTORICAL SOCIETY leans on a few funders — its largest provides 61% of grant income and the top three 91%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
99% 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 SAUSALITO HISTORICAL SOCIETY.
Largest funder’s share by year: 2018 100% · 2019 100% · 2020 100% · 2021 100% · 2022 49% · 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
93% of SAUSALITO HISTORICAL SOCIETY'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 $11k that is directly attributable, 91% of it comes from California funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $137k arriving through sponsors registered in 5 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.
Organizations like SAUSALITO HISTORICAL SOCIETY
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.
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 SAUSALITO HISTORICAL SOCIETY: 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 SAUSALITO HISTORICAL SOCIETY?
- SAUSALITO HISTORICAL SOCIETY (California) receives grants from 7 organizations whose IRS filings report $147,781 to it, the largest being AMERICAN ENDOWMENT FOUNDATION ($90,000). 3 of them have funded it in more than one year, and 93% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does SAUSALITO HISTORICAL SOCIETY have?
- IRS filings report 7 organizations giving $147,781 in grants to SAUSALITO HISTORICAL SOCIETY, 3 of which have funded it in more than one year.
- Who is the largest funder of SAUSALITO HISTORICAL SOCIETY?
- AMERICAN ENDOWMENT FOUNDATION is the largest funder on record, with $90,000 in grants. The full list of funders is on this page.
- How can an organization like SAUSALITO HISTORICAL SOCIETY 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 Sausalito Historical Society →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2025–2025), 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