California · Nonprofit
Big Brothers Big Sisters of the North Bay Inc
Big Brothers Big Sisters of the North Bay Inc (California) receives grants from 5 organizations whose IRS filings report $296,000 to it, the largest being Leonard & Beryl Buck Foundation ($150,000). 2 of them have funded it in more than one year.
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.
- Bothin Foundationshared fundersportfolio match
- The Morris Stulsaft Foundationshared fundersportfolio match
- Harbor Point Charitable Foundationlocalportfolio match
Who funds it, year by year
2017 → 2018: the base narrowed from 5 funders to 2 funders, grant income fell $235k → $61k.
1 of 5 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 5% 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 Big Brothers Big Sisters of the North Bay Inc’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
Big Brothers Big Sisters of the North Bay Inc leans on a few funders — its largest provides 51% 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
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 Big Brothers Big Sisters of the North Bay Inc.
Largest funder’s share by year: 2017 64% · 2018 98% — growing more concentrated.
“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
Big Brothers Big Sisters of the North Bay Inc draws 54% of its grant income from funders outside California, across 3 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $14k 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.
- Bothin Foundationshared fundersportfolio matchCA · backs 71 organizations that share your funders · its grantees resemble your mission
- The Morris Stulsaft Foundationshared fundersportfolio matchCA · backs 25 organizations that share your funders · its grantees resemble your mission
- Harbor Point Charitable Foundationlocalportfolio matchCA · funds 24 organizations near you · its grantees resemble your mission
- The West Marin Fundshared funderslocalCA · backs 27 organizations that share your funders · funds 54 organizations near you
- Big Brothers Big Sisters Of Americaportfolio matchits grantees resemble your mission
- Youth Collaboratory Incportfolio matchits grantees resemble your mission
- Big Brothers Big Sisters of Central Ohio Incportfolio matchits grantees resemble your mission
- Cohn Sadie & Louis Char Tuwportfolio matchits grantees resemble your mission
- Bernard E & Alba Witkin Charitable Foundationportfolio matchits grantees resemble your mission
- Ggs Foundationportfolio matchits grantees resemble your mission
- Dean and Margaret Lesher Foundationportfolio matchits grantees resemble your mission
- Crescent Porter Hale 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.
Organizations like Big Brothers Big Sisters of the North Bay Inc
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
62% of spending goes to programs.
Governance
Public support
97%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for Big Brothers Big Sisters of the North Bay 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. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds Big Brothers Big Sisters of the North Bay Inc?
- Big Brothers Big Sisters of the North Bay Inc (California) receives grants from 5 organizations whose IRS filings report $296,000 to it, the largest being Leonard & Beryl Buck Foundation ($150,000). 2 of them have funded it in more than one year.
- How many funders does Big Brothers Big Sisters of the North Bay Inc have?
- IRS filings report 5 organizations giving $296,000 in grants to Big Brothers Big Sisters of the North Bay Inc, 2 of which have funded it in more than one year.
- Who is the largest funder of Big Brothers Big Sisters of the North Bay Inc?
- Leonard & Beryl Buck Foundation is the largest funder on record, with $150,000 in grants. The full list of funders is on this page.
- How can an organization like Big Brothers Big Sisters of the North Bay 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.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2017 (financials across 2017–2017), 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