The Christy and John Mack Foundation concentrates its giving in health and community wellbeing, primarily through large, unrestricted grants to a small set of organizations. Grants also target public safety and international relief, and the foundation uses donor-advised/ intermediary vehicles as part of its strategy. Overall it behaves like a high-capacity private foundation making a few substantial awards rather than many small gifts.
The Christy and John Mack Foundation’s recent grantmaking is defined by a small number of very large awards to a few recurring organizations, especially Healthy US Collaborative Inc., which received $3.8 million in 2025, $1.03 million in 2024, and $2.53 million in 2023. That pattern points to sustained support rather than one-off grants. The foundation also uses intermediary and donor-advised vehicles, including Giving Back Fund, which appears in the grant record at $1.5 million in 2023 and $1 million in 2024. Across the recent grants list, the foundation supports community health improvement, hospital-related work, public safety, and humanitarian relief, with most awards described as general purpose or educational. Its giving includes unrestricted support to organizations such as NewYork–Presbyterian Hospital and NYC Police Foundation, alongside grants to International Rescue Committee and philanthropic intermediaries. The overall profile is that of a private foundation making a few substantial, often repeated commitments to organizations in health and community wellbeing, rather than distributing many small grants across a wide field.
Community health improvement is a central theme. Healthy US Collaborative Inc. received $3.8 million in 2025 for general purpose or educational support, following $1.03 million in 2024 and $2.53 million in 2023. Hospital support also appears in the record: NY Presbyterian Hospital received $987,469 in 2024 through contributed property and $12,531 in 2024. The foundation also funds public safety. NYC Police Foundation received $995,445 in 2025 and $550,000 in 2023, both listed as general purpose or educational. Humanitarian and refugee assistance shows up in a $1,025,000 grant to International Rescue Committee in 2023. In addition, general-purpose support went to Microsociety Inc. in 2023, 2024, and 2025, showing a continuing relationship with a nonprofit education organization.
Grant sizes range widely, with a p25 of $37,500, a median of $282,000, and a p75 of $1,000,000. The recent record shows repeated grants to the same organizations across multiple years, including Healthy US Collaborative Inc., NYC Police Foundation, Microsociety Inc., and NY Presbyterian Hospital. That recurrence suggests ongoing relationships rather than isolated awards. The foundation is a private foundation, funds individuals is false, and it does not make program-related investments. Recent grants also include contributed property, with securities used in some awards.
$3.9M
$2.3M
$9.4M
$3.9M
Most grants fall between $38K and $1M, with a median of $282K.
25th Percentile
$38K
Median
$282K
75th Percentile
$1M
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Concentrated, large-dollar grants with repeat funding to a small set of core grantees; occasional in-kind stock gifts and use of intermediary donor-advised vehicles rather than many small awards.
Notable grantees: Healthy US Collaborative, Giving Back Fund, NYC Police Foundation, International Rescue Committee, NewYork–Presbyterian Hospital
Grants land almost entirely in the United States, with 23 recent grants there and 100% of listed grants to U.S. recipients. By recipient location, Washington, DC appears repeatedly through Healthy US Collaborative Inc.; New York, NY also recurs through NYC Police Foundation, NY Presbyterian Hospital, Explorer's Club, Lincoln Center for the Arts, Central Park Conservancy, and Hip Hop Public Health. Philadelphia, PA appears through Microsociety Inc., while Los Angeles, CA appears through Giving Back Fund. The top state by grant count is DC, not the foundation’s headquarters state of New York.
The recent grants list shows support for community health improvement, hospital-related work, public safety, humanitarian and refugee assistance, and philanthropic intermediaries. Named recipients include Healthy US Collaborative Inc., NY Presbyterian Hospital, NYC Police Foundation, International Rescue Committee, and Giving Back Fund.
Yes. Healthy US Collaborative Inc. appears in 2023, 2024, and 2025; NYC Police Foundation appears in 2023 and 2025; Microsociety Inc. appears in 2023, 2024, and 2025; and NY Presbyterian Hospital appears in 2024 twice, including a property-based grant and a cash grant.
The typical grant size is $37,500 at the 25th percentile, $282,000 at the median, and $1,000,000 at the 75th percentile. The recent record includes both mid-sized grants and multi-million-dollar awards.
The top state by grant count is DC. Recent grants also go to New York, NY; Philadelphia, PA; Los Angeles, CA; and other U.S. locations, with all listed recipient grants in the United States.
No on both counts. The foundation’s profile shows funds individuals as false and makes program-related investments as false. Its recent grants are made to organizations and intermediaries rather than to individuals.
2026
Source: IRS Form 990-PF, fiscal year 2026.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| HEALTHY US COLLABORATIVE INC | WASHINGTON, DC | $3,030,000 | 2026 | GENERAL PURPOSE OR EDUCATIONAL |
| MICROSOCIETY INC | PHILADELPHIA, PA | $582,000 | 2026 | GENERAL PURPOSE OR EDUCATIONAL |
| FAIR PLAY | BOSTON, MA | $250,000 | 2026 | GENERAL PURPOSE OR EDUCATIONAL |
| SEA CORPS MARITIME GROUP | MOUNT PLEASANT, SC | $20,000 | 2026 | GENERAL PURPOSE OR EDUCATIONAL |
| HEALTHY US COLLABORATIVE INC | WASHINGTON, DC | $3,800,000 | 2025 | GENERAL PURPOSE OR EDUCATIONAL |
| NYC POLICE FOUNDATION | NEW YORK, NY | $995,445 | 2025 | GENERAL PURPOSE OR EDUCATIONALDESCRIPTION OF CONTRIBUTED PROPERTY: 9,900 SHARES MS STOCKBOOK VALUE OF CONTRIBUTION PROPERTY: 9,900 SHARES MS STOCK $99METHOD USED TO DETERMINE THE BOOK VALUE: COST BASISMETHOD USED TO DETERMINE FAIR MARKET VALUE: TREASURY REGULATIONS SECTION 20.2031-2DATE OF THE GIFTS: JULY 8, 2024 |
| MICROSOCIETY INC | PHILADELPHIA, PA | $182,000 | 2025 | GENERAL PURPOSE OR EDUCATIONAL |
| NYC POLICE FOUNDATION | NEW YORK, NY | $4,555 | 2025 | GENERAL PURPOSE OR EDUCATIONAL |
| HEALTHY US COLLABORATIVE INC | WASHINGTON, DC | $1,030,000 | 2024 | GENERAL PURPOSE OR EDUCATIONAL |
| GIVING BACK FUND | LOS ANGELES, CA | $1,000,000 | 2024 | GENERAL PURPOSE OR EDUCATIONAL |
| NY PRESBYTERIAN HOSPITAL | NEW YORK, NY | $987,469 | 2024 | GENERAL PURPOSE OR EDUCATIONALDESCRIPTION OF CONTRIBUTED PROPERTY: (1) 35,190 SHARES PALANTIR TECHNOLOGIES INC CL A (2) 9,000 SHARES VENTYX BIOSCIENCES INCBOOK VALUE OF CONTRIBUTION PROPERTY: (1) 35,190 SHARES PALANTIR TECHNOLOGIES INC CL A $123,516.90 (2) 9,000 SHARES VENTYX BIOSCIENCES INC $ 3,240.00 METHOD USED TO DETERMINE THE BOOK VALUE: COST BASISMETHOD USED TO DETERMINE FAIR MARKET VALUE: TREASURY REGULATIONS SECTION 20.2031-2DATE OF THE GIFTS: AUGUST 3, 2023 |
| FIDELITY CHARITABLE GIFT FUND | COVINGTON, KY | $300,000 | 2024 | GENERAL PURPOSE OR EDUCATIONAL |
| MICROSOCIETY INC | PHILADELPHIA, PA | $282,000 | 2024 | GENERAL PURPOSE OR EDUCATIONAL |
| EXPLORER'S CLUB | NEW YORK, NY | $25,000 | 2024 | GENERAL PURPOSE OR EDUCATIONAL |
| CENTRAL PARK CONSERVANCY | NEW YORK, NY | $25,000 | 2024 | GENERAL PURPOSE OR EDUCATIONAL |
| NY PRESBYTERIAN HOSPITAL | NEW YORK, NY | $12,531 | 2024 | GENERAL PURPOSE OR EDUCATIONAL |
| HEALTHY US COLLABORATIVE INC | WASHINGTON, DC | $2,530,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| GIVING BACK FUND | LOS ANGELES, CA | $1,500,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| INTERNATIONAL RESCUE COMMITTEE | ALBERT LEA, MN | $1,025,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| CHARLES M VALLEE FOUNDATION | SHELDON, SC | $1,000,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| NYC POLICE FOUNDATION | NEW YORK, NY | $550,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| MICROSOCIETY INC | PHILADELPHIA, PA | $182,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| FDNY FOUNDATION | BROOKLYN, NY | $100,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| LINCOLN CENTER FOR THE ARTS | NEW YORK, NY | $50,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| EXPLORER'S CLUB | NEW YORK, NY | $50,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| CENTRAL PARK CONSERVANCY | NEW YORK, NY | $25,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
| HIP HOP PUBLIC HEALTH | NEW YORK, NY | $15,000 | 2023 | GENERAL PURPOSE OR EDUCATIONAL |
HEALTHY US COLLABORATIVE INC
$3,030,000GENERAL PURPOSE OR EDUCATIONAL
FAIR PLAY
$250,000GENERAL PURPOSE OR EDUCATIONAL
SEA CORPS MARITIME GROUP
$20,000GENERAL PURPOSE OR EDUCATIONAL
HEALTHY US COLLABORATIVE INC
$3,800,000GENERAL PURPOSE OR EDUCATIONAL
GENERAL PURPOSE OR EDUCATIONALDESCRIPTION OF CONTRIBUTED PROPERTY: 9,900 SHARES MS STOCKBOOK VALUE OF CONTRIBUTION PROPERTY: 9,900 SHARES MS STOCK $99METHOD USED TO DETERMINE THE BOOK VALUE: COST BASISMETHOD USED TO DETERMINE FAIR MARKET VALUE: TREASURY REGULATIONS SECTION 20.2031-2DATE OF THE GIFTS: JULY 8, 2024
HEALTHY US COLLABORATIVE INC
$1,030,000GENERAL PURPOSE OR EDUCATIONAL
GENERAL PURPOSE OR EDUCATIONALDESCRIPTION OF CONTRIBUTED PROPERTY: (1) 35,190 SHARES PALANTIR TECHNOLOGIES INC CL A (2) 9,000 SHARES VENTYX BIOSCIENCES INCBOOK VALUE OF CONTRIBUTION PROPERTY: (1) 35,190 SHARES PALANTIR TECHNOLOGIES INC CL A $123,516.90 (2) 9,000 SHARES VENTYX BIOSCIENCES INC $ 3,240.00 METHOD USED TO DETERMINE THE BOOK VALUE: COST BASISMETHOD USED TO DETERMINE FAIR MARKET VALUE: TREASURY REGULATIONS SECTION 20.2031-2DATE OF THE GIFTS: AUGUST 3, 2023
EXPLORER'S CLUB
$25,000GENERAL PURPOSE OR EDUCATIONAL
HEALTHY US COLLABORATIVE INC
$2,530,000GENERAL PURPOSE OR EDUCATIONAL
INTERNATIONAL RESCUE COMMITTEE
$1,025,000GENERAL PURPOSE OR EDUCATIONAL
CHARLES M VALLEE FOUNDATION
$1,000,000GENERAL PURPOSE OR EDUCATIONAL
EXPLORER'S CLUB
$50,000GENERAL PURPOSE OR EDUCATIONAL