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.
- Revenue FY2017
- $809k
- Funders on record
- 5
- Grants received
- $296k
- Net assets
- $760k
What Big Brothers Big Sisters of the North Bay Inc does
Mission
To provide children facing adversity with strong and enduring professionally supported, one-to-one relationships that change their lives for the better, forever.
As stated on its FY2017 Form 990.
Program
Community Based Mentoring - Recruited, screened, trained and matched adult volunteers one-on-one with children in Marin, Sonoma, Napa, and Solano Counties that need a mentor. Coordinated referrals for youth from schools, therapists, caseworkers, child protective services, probations departments, and other community groups. Our matches meet two to four times per month and engage in fun and educational activities that broaden their horizons and guide them on a lifelong path of success. We are accountable to each child in our program achieving: educational success; avoidance of risky behaviors; higher aspirations; greater confidence and better relationships.
The first program described on its most recent Form 990, which lists programs largest first by expense.
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 state 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 Big Brothers Big Sisters of the North Bay Inc
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.
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. Screen this nonprofit · 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.
Play a game about who funds Big Brothers Big Sisters of the North Bay →
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 5 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