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Nonprofits in ROSS, CA

47 tax-exempt organizations with a return on IRS file.

Largest nonprofits in ROSS by revenue

Top 5s in ROSS

Most raised in gifts and grants

Contributions, gifts and grants received in the year

  1. 1Gruber Family Foundation990-PF, year ended Dec 2025$12M
  2. 2The Branson School990, year ended Jun 2025$7.4M
  3. 3Elizabeth R & William J Patterson Foundation990-PF, year ended Dec 2024$3.2M
  4. 4Marin Art and Garden Center990, year ended Dec 2025$2.2M
  5. 5Cedars of Marin990, year ended Sep 2025$1.8M

Largest reserves

Net assets (fund balance) at year end

  1. 1Gruber Family Foundation990-PF, year ended Dec 2025$75.4M
  2. 2The Branson School990, year ended Jun 2025$57.5M
  3. 3Elizabeth R & William J Patterson Foundation990-PF, year ended Dec 2024$49M
  4. 4Cedars of Marin990, year ended Sep 2025$31.6M
  5. 5Callison Foundation990-PF, year ended Dec 2024$9.4M

Highest-paid people

Compensation from the organization and related organizations, including other pay

  1. 1Christina K MazzolaHead of School · The Branson School$771.5K
  2. 2Jim ZimmermanCao · The Branson School$426.2K
  3. 3David HansonCfoo · The Branson School$393.9K
  4. 4Nathalio GrayAsst Head for Mission Advancement · The Branson School$282.4K
  5. 5Jeffrey SymondsAsst Hos for Acad & Dean of Faculty · The Branson School$258.3K

All nonprofits in ROSS, A–Z