Rosenberg Ach Foundation
This organization is a private foundation dedicated to supporting various charitable causes. Its mission appears to focus on environmental conservation, health initiatives, community development, education, and the arts. The foundation provides funding to organizations that work in these sectors, reflecting a commitment to improving community well-being and promoting sustainability. It primarily supports recipients in California, with a notable emphasis on environmental and health-related organizations.
Source: Zeffy Agent · Mar 2026
Ideal Applicant
A California-based nonprofit working in environment, health, community or arts with programs sized to match the foundation's typical grants and with established local credibility or introductions to the foundation's circle.
Good Fit
- • Located in California or serving California communities.
- • Work in environmental conservation, health, community development, education, or arts.
- • Project budgets that fit the observed grant sizes (from a few thousand up to low six figures).
- • Existing relationship or introduction to the foundation's board, directors, or prior grantees.
- • Track record of measurable regional impact and organizational capacity.
Geography
Giving is highly concentrated in California, with about 95% of grant dollars going to that state and only two other states receiving small shares.
Recipient Variety
The latest year shows 18 distinct recipients (and similar counts the prior year) across environment, health, community, education and the arts, with 13 returning grantees indicating a reasonably broad multi-recipient portfolio despite dollar concentration at the top.
New Applicants
Direct evidence shows five new grantees in the latest year (about a 28% new-recipient share), so new entrants do appear in the portfolio, but the foundation states it funds only preselected applicants and provides no public application route, which limits the practical likelihood that an unfamiliar applicant can readily enter the portfolio.
Source: Zeffy Agent · Mar 2026
