The Michael and Noemi Neidorff Family Foundation concentrates its giving largely in the St. Louis region, funding a small number of sizable general‑operating grants to institutions that support children, families, and community wellbeing. Their portfolio mixes major local investments in pediatric healthcare, child‑focused nonprofits and disability services with targeted support for Jewish communal life and a notable national gift to law enforcement/public safety. Grants are predominantly unrestricted operating support, signaling trust in grantee leadership and a preference for organizations with broad community impact.
Concentrated giving: a small number of large, unrestricted general‑operating grants dominate total payout. Primarily funds established regional institutions in St. Louis with occasional national grants; favors core operating support over project‑restricted gifts.
The Michael and Noemi Neidorff Family Foundation’s recent giving is anchored by repeated seven-figure general operating support for Saint Louis Zoo and Cardinal Glennon Childrens Foundation, showing a preference for large, flexible grants to established institutions. That pattern sits alongside support for child-focused services, disability support, and Jewish communal organizations in the St. Louis area, plus a national grant to public-safety philanthropy. Across the recent grant list, the foundation appears to favor organizations that serve broad community needs rather than narrow project work. Several of the largest awards went to institutions with wide public reach in St. Louis. Saint Louis Zoo received two $2,000,000 general operating grants, while Cardinal Glennon Childrens Foundation received two $1,500,000 general operating grants. Other sizable grants supported Variety the Childrens Charity, Ronald Mcdonald House, and St Louis Arc Inc, all through unrestricted operating support. The foundation’s smaller gifts extend the same pattern of support to community institutions, including Jewish Federation of St Louis and Kol Rinah. The result is a portfolio that blends major local commitments with a consistent emphasis on operational flexibility.
Child and family services are a clear thread in the foundation’s grantmaking. It gave $1,300,000 to Variety the Childrens Charity for general operating support and $1,000,000 to Ronald Mcdonald House for general operating support, both of which point to broad backing for organizations serving children and families. Disability and developmental services also appear prominently. St Louis Arc Inc received $700,000 in general operating support, and Miriam School and Learning Center received $300,000, indicating support for institutions working with people with disabilities and learning differences. The foundation also funds Jewish communal life in St. Louis. Jewish Federation of St Louis received $50,000 in general operating support, and Kol Rinah received a $1,000 general fund grant. A separate line of giving supports public safety philanthropy: National Law Enforcement Foundation received $1,500,000 in general operating support.
$9.2M
$188.5M
$12.8M
$11.2M
Most grants fall between $251 and $750, with a median of $501.
25th Percentile
$251
Median
$501
75th Percentile
$750
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Notable grantees: Saint Louis Zoo, Cardinal Glennon Children's Foundation, National Law Enforcement Foundation, Variety the Children's Charity, St. Louis Arc
The typical grant size is small, with a p25 of $251, a median of $500, and a p75 of $750. The recent list, however, also includes multiple seven-figure grants, which suggests a highly concentrated portfolio with a few very large operating awards alongside many smaller gifts. The available grant records show a 2024 grant and a larger 2025 batch, but not a long multi-year recipient pattern across organizations. The foundation is a family foundation and does not fund individuals or make program-related investments. The grants shown are largely general operating support, with one general fund award.
Giving is heavily centered in Missouri, where 50% of grants go to recipients in the foundation’s headquarters state. Saint Louis and St. Louis appear repeatedly in the recipient list, including St Louis Zoo, Cardinal Glennon Childrens Foundation, St Louis Arc Inc, Urban League of Metropolitan St Louis, and Miriam School and Learning Center. Outside Missouri, Chicago appears through Ronald Mcdonald House and a 2024 grant to From K-1 - Gp 2023-2024 Private, while Wexford, Pennsylvania appears for Variety the Childrens Charity. The only non-U.S. country listed is the United States, at 22 grants.
The recent grants point to children’s services, healthcare, disability support, Jewish communal institutions, and public-safety philanthropy. Examples include large operating grants to Saint Louis Zoo, Cardinal Glennon Childrens Foundation, Variety the Childrens Charity, St Louis Arc Inc, Jewish Federation of St Louis, and National Law Enforcement Foundation.
The foundation’s typical grant size is modest: p25 is $251, median is $500, and p75 is $750. The recent grant list also includes much larger awards, including multiple grants at the $1,000,000 to $2,000,000 level.
Yes. The recent grants are predominantly listed as general operating support, with one general fund award. That pattern appears across many of the largest grants, including awards to Saint Louis Zoo, Cardinal Glennon Childrens Foundation, and Ronald Mcdonald House.
Missouri is the top state by grant count, with 50% of grants going to recipients in the foundation’s headquarters state. St. Louis and Saint Louis recipients make up much of the list, with additional grants going to Chicago, Wexford, and Minden.
2025
Source: IRS Form 990-PF, fiscal year 2025.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| SAINT LOUIS ZOO | ST LOUIS, MO | $2,000,000 | 2025 | GENERAL OPERATING |
| NATIONAL LAW ENFORCEMENT FOUNDATION | MINDEN, NV | $1,500,000 | 2025 | GENERAL OPERATING |
| CARDINAL GLENNON CHILDRENS FOUNDATION | ST LOUIS, MO | $1,500,000 | 2025 | GENERAL OPERATING |
| VARIETY THE CHILDRENS CHARITY | WEXFORD, PA | $1,300,000 | 2025 | GENERAL OPERATING |
| RONALD MCDONALD HOUSE | CHICAGO, IL | $1,000,000 | 2025 | GENERAL OPERATING |
| ST LOUIS ARC INC | SAINT LOUIS, MO | $700,000 | 2025 | GENERAL OPERATING |
| URBAN LEAGUE OF METROPOLITAN ST LOUIS | SAINT LOUIS, MO | $600,000 | 2025 | GENERAL OPERATING |
| MIRIAM SCHOOL AND LEARNING CENTER | ST LOUIS, MO | $300,000 | 2025 | GENERAL OPERATING |
| AVENUES COUNSELING CENTER | SAINT LOUIS, MO | $250,000 | 2025 | GENERAL OPERATING |
| JEWISH FEDERATION OF ST LOUIS | ST LOUIS, MO | $50,000 | 2025 | GENERAL OPERATING |
| KOL RINAH | CLAYTON, MO | $1,000 | 2024 | GENERAL FUND |
| FROM K-1 - GP 2023-2024 PRIVATE | CHICAGO, IL | $1 | 2024 | GENERAL FUND |
SAINT LOUIS ZOO
$2,000,000GENERAL OPERATING
NATIONAL LAW ENFORCEMENT FOUNDATION
$1,500,000GENERAL OPERATING
GENERAL OPERATING
MIRIAM SCHOOL AND LEARNING CENTER
$300,000GENERAL OPERATING
AVENUES COUNSELING CENTER
$250,000GENERAL OPERATING
KOL RINAH
$1,000GENERAL FUND
FROM K-1 - GP 2023-2024 PRIVATE
$1GENERAL FUND