Siebecker Foundation Incorporated
The organization is a private foundation dedicated to supporting various charitable causes, with a focus on religious institutions and medical research, particularly related to Parkinson's disease. It provides funding to organizations such as churches and research foundations, reflecting its commitment to both community support and health-related initiatives. The foundation has made significant contributions to local charities, indicating a strong inclination towards supporting causes that benefit the community. Its activities primarily center around grant-making, with a notable emphasis on donor advised funds.
Source: Zeffy Agent · Mar 2026
Ideal Applicant
A Wisconsin-based nonprofit or an intermediary (for example, a community foundation donor-advised fund) with a clear local connection or an existing relationship to the foundation’s leadership.
Good Fit
- • Located in Wisconsin or serving Wisconsin communities.
- • Has an existing relationship or introduction to the foundation directors or to the local community foundation.
- • Fits causes previously supported (local congregations, community foundations, or disease-research charities).
- • Ability to receive or be recommended via a donor-advised fund.
Geography
Giving observed in the latest year was entirely concentrated in Wisconsin; the foundation’s recent grants are directed to in-state recipients.
Recipient Variety
The latest year shows only two distinct recipients and the fund’s recent history (two years) has small numbers of grantees overall, indicating a narrow observed recipient set despite some mission variety.
New Applicants
The foundation explicitly restricts awards to preselected recipients and no public application route or contact details were found, so unfamiliar applicants are unlikely to enter the portfolio by unsolicited application.
Source: Zeffy Agent · Mar 2026
