The Michael & Quirsis Riney Family Foundation concentrates very large, locally focused capital and institutional support in the St. Louis region, funding major facility projects and core operating needs at established cultural and educational institutions. Their giving favors few, high-dollar grants to prominent local organizations—particularly an elite private day school, the Missouri Botanical Garden, and the Saint Louis Zoo—suggesting a priority on civic amenities and lifelong learning resources that enhance community infrastructure and visitor experiences.
Highly concentrated: very few but very large grants, often multi-grant support to the same institutions; capital and facility-focused funding with repeated support for institutional partners in the St. Louis metro area.
Michael & Quirsis Riney Family Fndn C/o Anders has made one very large recent commitment to Mary Institute and Saint Louis Country Day School: $4,573,543 for an athletic facility in 2025. That grant sits alongside a pattern of high-dollar support for St. Louis institutions that serve students, visitors, and the public. The foundation’s recent record also includes seven-figure gifts to the Missouri Botanical Gardens, including $1,018,847 in 2023, $1,000,000 in 2024, and $981,153 in 2025 for a visitors center. In the civic and cultural space, it gave $600,000 in 2024 and $598,307 in 2025 to Saint Louis Zoo Association, including support for the primate canopy trail. Smaller awards to Washington University, Arch Grants, Forest Park Forever, Donald Danforth Plant Science Center, Junior Achievement of Greater St Louis, and Kidsmart show a local portfolio that mixes capital projects with general operating support.
In education, the foundation’s largest recent grant went to Mary Institute and Saint Louis Country Day School for an athletic facility, indicating support for campus infrastructure tied to student life and recreation. Its science and education ecosystem support also appears in grants of $25,000 to Donald Danforth Plant Science Center in both 2023 and 2024, plus $50,000 to Washington University in 2023. For youth and workforce learning, it gave $25,000 in 2023 and again in 2024 to Junior Achievement of Greater St Louis for general fund support. The portfolio also includes $50,000 to Arch Grants in 2023, linking the foundation to local entrepreneurship and institutional capacity in the St. Louis area.
The recent grant size profile is highly skewed: p25 is $25,000, the median is $25,000, and p75 rises to $187,500, reflecting a few very large awards and many smaller ones. The pattern is repeated support over multiple years to the same organizations, including Missouri Botanical Gardens, Saint Louis Zoo Association, Forest Park Forever, Donald Danforth Plant Science Center, and Junior Achievement of Greater St Louis. The foundation is a family foundation, and the data show no program-related investments and no funding to individuals.
$7.1M
$14M
$2.9M
$7.4M
Most grants fall between $25K and $188K, with a median of $25K.
25th Percentile
$25K
Median
$25K
75th Percentile
$188K
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Notable grantees: Mary Institute and Saint Louis Country Day School, Missouri Botanical Garden, Saint Louis Zoo Association
Grantmaking is entirely concentrated in Missouri: 100% of grants in the recent list went to recipients in the HQ state, and the top state by grant count is MO. The recipients are clustered in St. Louis and nearby Missouri cities, including Olivette, Chesterfield, Maryland Heights, and St. Louis itself. Named St. Louis grantees dominate the list, which matches the foundation’s local scope of giving.
The recent grants show support for schools, botanical and zoological institutions, university and research organizations, and local civic nonprofits. Examples include Mary Institute and Saint Louis Country Day School for an athletic facility, Missouri Botanical Gardens for general fund and a visitors center, and Saint Louis Zoo Association for general fund support and the primate canopy trail.
Yes. Several recipients appear across multiple years, including Missouri Botanical Gardens in 2023, 2024, and 2025; Saint Louis Zoo Association in 2024 and 2025; Forest Park Forever in 2023 and 2024; Donald Danforth Plant Science Center in 2023 and 2024; and Junior Achievement of Greater St Louis in 2023 and 2024.
The foundation’s typical grant size is $25,000 at both the 25th percentile and the median. The 75th percentile is $187,500, which shows that while many awards are modest, the foundation also makes some much larger grants.
Its giving is local and entirely in Missouri. All of the recent grants listed went to recipients in the HQ state, and the recipient cities include St. Louis, Olivette, Chesterfield, and Maryland Heights.
The grants point to capital and operating support. Recent examples include an athletic facility at Mary Institute and Saint Louis Country Day School, a visitors center at Missouri Botanical Gardens, the primate canopy trail at Saint Louis Zoo Association, and general fund support for multiple St. Louis institutions.
2026
Source: IRS Form 990-PF, fiscal year 2026.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| MARY INSTITUTE AND SAINT LOUIS COUNTRY DAY SCHOOL | ST LOUIS, MO | $6,527,597 | 2026 | ATHLETIC FACILITY |
| SAINT LOUIS ZOO ASSOCIATION | ST LOUIS, MO | $599,418 | 2026 | PRIMATE CANOPY TRAIL |
| MARY INSTITUTE AND SAINT LOUIS COUNTRY DAY SCHOOL | ST LOUIS, MO | $4,573,543 | 2025 | ATHLETIC FACILITY |
| MISSOURI BOTANICAL GARDENS | ST LOUIS, MO | $981,153 | 2025 | VISTORS CENTER |
| SAINT LOUIS ZOO ASSOCIATION | ST LOUIS, MO | $598,307 | 2025 | PRIMATE CANOPY TRAIL |
| MISSOURI BOTANICAL GARDENS | ST LOUIS, MO | $1,000,000 | 2024 | GENERAL FUND |
| SAINT LOUIS ZOO ASSOCIATION | ST LOUIS, MO | $600,000 | 2024 | GENERAL FUND |
| KIDSMART | MARYLAND HEIGHTS, MO | $25,000 | 2024 | GENERAL FUND |
| JUNIOR ACHIEVEMENT OF GREATER ST LOUIS | CHESTERFIELD, MO | $25,000 | 2024 | GENERAL FUND |
| FOREST PARK FOREVER | ST LOUIS, MO | $25,000 | 2024 | GENERAL FUND |
| DONALD DANFORTH PLANT SCIENCE CENTER | OLIVETTE, MO | $25,000 | 2024 | GENERAL FUND |
| MISSOURI BOTANICAL GARDENS | ST LOUIS, MO | $1,018,847 | 2023 | GENERAL FUND |
| WASHINGTON UNIVERSITY | ST LOUIS, MO | $50,000 | 2023 | GENERAL FUND |
| ARCH GRANTS | ST LOUIS, MO | $50,000 | 2023 | GENERAL FUND |
| JUNIOR ACHIEVEMENT OF GREATER ST LOUIS | CHESTERFIELD, MO | $25,000 | 2023 | GENERAL FUND |
| FOREST PARK FOREVER | ST LOUIS, MO | $25,000 | 2023 | GENERAL FUND |
| DONALD DANFORTH PLANT SCIENCE CENTER | OLIVETTE, MO | $25,000 | 2023 | GENERAL FUND |
MISSOURI BOTANICAL GARDENS
$981,153VISTORS CENTER
SAINT LOUIS ZOO ASSOCIATION
$598,307PRIMATE CANOPY TRAIL
GENERAL FUND
KIDSMART
$25,000GENERAL FUND
FOREST PARK FOREVER
$25,000GENERAL FUND
FOREST PARK FOREVER
$25,000GENERAL FUND