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Nevada · Nonprofit

FRIENDS OF SUTRO TUNNEL CHARITY

FRIENDS OF SUTRO TUNNEL CHARITY (Nevada) receives grants from 2 organizations whose IRS filings report $15,000 to it, the largest being SMALL WORLD FOUNDATION (PREVIOUSLY KNOWN AS BRIGHT STAR FOUNDATION) ($10,000). 0 of them have funded it in more than one year.

$478k
Revenue FY2025
2
Funders on record
$15k
Grants received
$688k
Net assets
0/2 repeat funders

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.

See all 12 prospects and why each one surfaced →
01The organization over time

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.

100 = 20212021 Revenue 100 ($282k) Expenses 100 ($32k) Net assets 100 ($250k)2022 Revenue 38 ($109k) Expenses 317 ($102k) Net assets 103 ($257k)2023 Revenue 61 ($172k) Expenses 360 ($116k) Net assets 125 ($314k)2024 Revenue 57 ($161k) Expenses 354 ($114k) Net assets 144 ($361k)2025 Revenue 170 ($478k) Expenses 472 ($151k) Net assets 275 ($688k)
20212022202320242025
Revenue (170)Expenses (472)Net assets (275)
02Who funds it

Who funds it, year by year

Grant support over time, funder by funder — shade shows the grant size each year.

Funder
'24*
'25*
total
funders
1
1

From the IRS filings of FRIENDS OF SUTRO TUNNEL CHARITY’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

FRIENDS OF SUTRO TUNNEL CHARITY leans on a few funders — its largest provides 67% 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

67%
largest funder
100%
top three
~2
effective funders

“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

FRIENDS OF SUTRO TUNNEL CHARITY draws 67% of its grant income from funders outside Nevada, across 2 states in all.

NV
CA

Funder states come from each funder’s own filing. 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.

03Its place in the field

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.

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 FRIENDS OF SUTRO TUNNEL CHARITY

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 Nevada

Friends of Midas Inc65%Women in Mining National63%Friends of the Nevada Southern Railway Inc63%Friends of the Nevada State Railroad Museum the Virginia & Truckee Division62%Nevada Preservation Foundation62%Soroptimist International of South Lake Tahoe Fndt62%Thunderbird Lodge Preservation Society61%Mining Industry Foundation for Battle Mountain High School61%

Nationally

Friends of the Cumbres & Toltec Scenic Railroad Inc66%Historic Toxaway Foundation66%Friends of Abandoned Cemeteries65%Quecreek Mine Rescue Foundation65%Friends of Midas Inc65%The Friends of the Great Sauk State Trail Inc65%Friends of Snow Canyon State Park65%Friends of Colorado River Endowment65%
04Profile & governance

Read directly from this organization’s own Form 990, as neutral context.

Screen this organization

A dated, signed PDF of the compliance screen for FRIENDS OF SUTRO TUNNEL CHARITY: 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.

A paid feature, included from the $75 plan up. Sign in to download.

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 FRIENDS OF SUTRO TUNNEL CHARITY?
FRIENDS OF SUTRO TUNNEL CHARITY (Nevada) receives grants from 2 organizations whose IRS filings report $15,000 to it, the largest being SMALL WORLD FOUNDATION (PREVIOUSLY KNOWN AS BRIGHT STAR FOUNDATION) ($10,000). 0 of them have funded it in more than one year.
How many funders does FRIENDS OF SUTRO TUNNEL CHARITY have?
IRS filings report 2 organizations giving $15,000 in grants to FRIENDS OF SUTRO TUNNEL CHARITY.
Who is the largest funder of FRIENDS OF SUTRO TUNNEL CHARITY?
SMALL WORLD FOUNDATION (PREVIOUSLY KNOWN AS BRIGHT STAR FOUNDATION) is the largest funder on record, with $10,000 in grants. The full list of funders is on this page.
How can an organization like FRIENDS OF SUTRO TUNNEL CHARITY find more funders?
Start with the funders already giving here, then look at the foundations that back similar organizations in Nevada. 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 2021–2025), and the filings of 2funders 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