The Carlos & Marguerite Mason Foundation concentrates its giving on health care and medical-related causes, with a particular emphasis on transplant patient financial assistance and pediatric health services in Georgia/Atlanta. Although based in St. Louis, the foundation’s largest gifts go to Georgia institutions—both nonprofit hospitals and academic research centers—often as multi-part or repeat grants to the same organizations. Grants include support for direct patient assistance, hospital operating needs, research, and family-support programs tied to medical care.
The Carlos & Marguerite Mason Fdn gives at a high level to health care and medical causes, with transplant patient financial assistance standing out as its largest recent line of support. The foundation’s biggest awards in the record go to the Georgia Transplant Foundation and Georgia Transplant Foundation Inc., including $2,300,000 in 2024 and $2,050,000 in 2025 for financial assistance. That pattern shows a funder willing to make very large grants for direct patient aid rather than limiting its role to institutional operating support. Children’s health is another major thread. The foundation backed Children’s Healthcare of Atlanta with $1,100,000 in 2024 and $1,000,000 in 2023 for various healthcare programs, then continued with a $500,000 operating grant in 2025 to Childrens Healthcare of Atlanta Inc and a $350,000 program grant in 2025. It also supports medical research and related health systems through grants to the University of Georgia Research Foundation and Emory University. Across the recent record, the foundation pairs major financial assistance for patients with support for hospitals, research institutions, and family-centered medical services.
Transplant-related patient aid is the clearest theme in the recent record. In 2025, the foundation gave $2,050,000 to Georgia Transplant Foundation Inc for financial assistance, following $2,300,000 in 2024 and $1,900,000 in 2023 to Georgia Transplant Foundation for the same purpose. Pediatric health is another consistent area. The foundation awarded $1,100,000 to Children’s Healthcare of Atlanta in 2024 and $1,000,000 in 2023 for various healthcare programs, then followed with a $500,000 general operating grant in 2025 to Childrens Healthcare of Atlanta Inc. Family support tied to hospitalization also appears in the record. Atlanta Ronald McDonald House Charities received $500,000 in 2025 for its adopt a family program, and Atlanta Ronald McDonald House received $30,000 grants in both 2024 and 2023 for the same program. The foundation also backs research and academic health programs, including $650,000 grants in 2025 and 2024 to the University of Georgia Research Foundation for general support.
Typical grants are substantial: the 25th percentile is $115,000, the median is $475,000, and the 75th percentile is $850,000. The record also includes several seven-figure awards, which places the foundation well above a small-grants model. Recipients recur across multiple years, especially Georgia Transplant Foundation, Children’s Healthcare of Atlanta, the University of Georgia Research Foundation, Emory University, Angel Flight Soars Inc, Augusta University Foundation Inc, and Atlanta Ronald McDonald House. The foundation is not described as making program-related investments and does not fund individuals directly.
$5.1M
$102.8M
$13.5M
$6.3M
Most grants fall between $115K and $850K, with a median of $475K.
25th Percentile
$115K
Median
$475K
75th Percentile
$850K
About 0% of grants go to recipients in GA.
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Concentrated, large-dollar grants to a small number of health-focused institutions, with several repeat grants to the same grantees; geographic concentration in Georgia/Atlanta despite the foundation’s St. Louis location.
Notable grantees: Georgia Transplant Foundation, Children's Healthcare of Atlanta, University of Georgia Research Foundation, Emory University, Atlanta Ronald McDonald House Charities
Giving is regional and concentrated in Georgia. The top state by grant count is GA, and 0% of grants in the record went to recipients in the foundation’s HQ state of Missouri. Atlanta appears repeatedly, including awards to Georgia Transplant Foundation, Children’s Healthcare of Atlanta, Emory University, and Atlanta Ronald McDonald House. Other Georgia recipients include Athens, Augusta, Roswell, Chamblee, and Marietta. All recorded grants went to U.S. recipients.
The recent record centers on health care and medical-related organizations: transplant patient assistance groups, pediatric hospitals, academic medical research entities, and family-support programs tied to hospitalization. Named recipients include Georgia Transplant Foundation, Children’s Healthcare of Atlanta, Emory University, the University of Georgia Research Foundation, and Atlanta Ronald McDonald House.
The foundation’s grant sizes are relatively large. The 25th percentile is $115,000, the median is $475,000, and the 75th percentile is $850,000. Recent awards also include multiple grants above $1 million.
Yes. That is one of the clearest patterns in the record. Georgia Transplant Foundation received $2,300,000 in 2024, $2,050,000 in 2025, and $1,900,000 in 2023, all for financial assistance.
Yes. Georgia is the top state by grant count, and the record shows recipients in Atlanta, Athens, Augusta, Roswell, Chamblee, and Marietta. All listed grants went to U.S. organizations, and none went to Missouri recipients.
No. The provided data says it does not fund individuals. Its recent grants are to organizations such as hospitals, foundations, research centers, and service nonprofits.
2025
Source: IRS Form 990-PF, fiscal year 2025.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| GEORGIA TRANSPLANT FOUNDATION INC | ROSWELL, GA | $2,050,000 | 2025 | FINANCIAL ASSISTANCE |
| UNIVERSITY OF GEORGIA RESEARCH FOUNDATIO | ATHENS, GA | $650,000 | 2025 | GENERAL SUPPORT |
| CHILDRENS HEALTHCARE OF ATLANTA INC | ATLANTA, GA | $500,000 | 2025 | GENERAL OPERATING |
| ATLANTA RONALD MCDONALD HOUSE CHARITIES | ATLANTA, GA | $500,000 | 2025 | ADOPT A FAMILY PROGRAM |
| EMORY UNIVERSITY | ATLANTA, GA | $400,000 | 2025 | GENERAL OPERATING |
| CHILDRENS HEALTHCARE OF ATLANTA | ATLANTA, GA | $350,000 | 2025 | VARIOUS HEALTHCARE PROGRAMS |
| THE GEORGIA HEALTH SCIENCES FOUNDATION | NEW YORK, NY | $250,000 | 2025 | GENERAL OPERATING |
| AUGUSTA UNIVERSITY FOUNDATION INC | AUGUSTA, GA | $150,000 | 2025 | GENERAL OPERATING |
| ANGEL FLIGHT SOARS INC | CHAMBLEE, GA | $150,000 | 2025 | GENERAL SUPPORT |
| ENDURING HEARTS INC | MARIETTA, GA | $100,000 | 2025 | GENERAL OPERATING |
| GEORGIA TRANSPLANT FOUNDATION | ATLANTA, GA | $2,300,000 | 2024 | FINANCIAL ASSISTANCE |
| CHILDREN'S HEALTHCARE OF ATLANTA | ATLANTA, GA | $1,100,000 | 2024 | VARIOUS HEALTHCARE PROGRAMS |
| UNIVERSITY OF GEORGIA RESEARCH FOUNDATIO | ATHENS, GA | $650,000 | 2024 | GENERAL SUPPORT |
| GEORGIA HEALTH SCIENCES LIBRARY ASSOCIATION | ATLANTA, GA | $325,000 | 2024 | GENERAL OPERATING |
| ANGEL FLIGHT SOARS INC | CHAMBLEE, GA | $123,000 | 2024 | GENERAL SUPPORT |
| AUGUSTA UNIVERSITY FOUNDATION INC | AUGUSTA, GA | $72,000 | 2024 | GENERAL OPERATING |
| ATLANTA RONALD MCDONALD HOUSE | ATLANTA, GA | $30,000 | 2024 | ADOPT A FAMILY PROGRAM |
| GEORGIA TRANSPLANT FOUNDATION | ATLANTA, GA | $1,900,000 | 2023 | FINANCIAL ASSISTANCE |
| CHILDREN'S HEALTHCARE OF ATLANTA | ATLANTA, GA | $1,000,000 | 2023 | VARIOUS HEALTHCARE PROGRAMS |
| PIEDMONT HEALTHCARE FOUNDATION INC | ATLANTA, GA | $800,000 | 2023 | GENERAL SUPPORT |
| UNIVERSITY OF GEORGIA RESEARCH FOUNDATIO | ATHENS, GA | $800,000 | 2023 | GENERAL SUPPORT |
| EMORY UNIVERSITY | ATLANTA, GA | $525,000 | 2023 | GENERAL SUPPORT |
| GEORGIA HEALTH SCIENCES | AUGUST, GA | $425,000 | 2023 | KIDNEY TRANSPLANT PROGRAMS |
| ENDURING HEARTS INC | MARIETTA, GA | $120,000 | 2023 | GENERAL SUPPORT |
| ANGEL FLIGHT SOARS INC | CHAMBLEE, GA | $100,000 | 2023 | GENERAL SUPPORT |
| ATLANTA RONALD MCDONALD HOUSE | ATLANTA, GA | $30,000 | 2023 | ADOPT A FAMILY PROGRAM |
GEORGIA TRANSPLANT FOUNDATION INC
$2,050,000FINANCIAL ASSISTANCE
CHILDRENS HEALTHCARE OF ATLANTA INC
$500,000GENERAL OPERATING
ATLANTA RONALD MCDONALD HOUSE CHARITIES
$500,000ADOPT A FAMILY PROGRAM
EMORY UNIVERSITY
$400,000GENERAL OPERATING
CHILDRENS HEALTHCARE OF ATLANTA
$350,000VARIOUS HEALTHCARE PROGRAMS
THE GEORGIA HEALTH SCIENCES FOUNDATION
$250,000GENERAL OPERATING
GEORGIA TRANSPLANT FOUNDATION
$2,300,000FINANCIAL ASSISTANCE
CHILDREN'S HEALTHCARE OF ATLANTA
$1,100,000VARIOUS HEALTHCARE PROGRAMS
GEORGIA HEALTH SCIENCES LIBRARY ASSOCIATION
$325,000GENERAL OPERATING
ATLANTA RONALD MCDONALD HOUSE
$30,000ADOPT A FAMILY PROGRAM
GEORGIA TRANSPLANT FOUNDATION
$1,900,000FINANCIAL ASSISTANCE
CHILDREN'S HEALTHCARE OF ATLANTA
$1,000,000VARIOUS HEALTHCARE PROGRAMS
EMORY UNIVERSITY
$525,000GENERAL SUPPORT
GEORGIA HEALTH SCIENCES
$425,000KIDNEY TRANSPLANT PROGRAMS