The Marianthi Foundation Inc
The Marianthi Foundation Inc is a private foundation based in New York, NY, established in 1993. The organization is designated as a 501(c)(3) charitable organization and has been tax-exempt since March 1994. The foundation operates as a family foundation with a focus on philanthropic giving across multiple sectors.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$16.5M
-61.1% YoY
Annual Giving
$75.1M
+128.2% YoY
Grant Count
5
+0.0% YoY
Avg Grant Size
$15.0M
+128.2% YoY
Mission & Focus Areas
The foundation's primary funding interests include:
- Arts and Culture
- Education
- Environment and Natural Resources
- Health
- Philanthropy, Voluntarism & Grantmaking
Grantmaking
Recent grants made by the foundation include:
Grant Range
s typically range from $2,000 to over $41 million, reflecting a diverse portfolio of funding commitments.
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Geographic Focus
Where this funder awards grants
The foundation provides funding across multiple states and cities, including:
- Massachusetts (Chilmark)
- Missouri (St. Louis)
- New Jersey (Newark)
- New York (New York)
- Pennsylvania (Philadelphia)
- Rhode Island (Providence)
Grant Distribution by State
Cities
Financial History
Multi-year comparison from IRS filings
Assets & Resources
- Total assets (2023): $42,389,832
- Total liabilities (2023): $1,440,000
Revenue Composition (2023)
- Total grants and contributions received: $80,000
- Investment income and dividends: $1,367,174
- Net gain from sale of non-inventory assets: $11,876,389
Historical Comparison
The foundation's investment income increased significantly from 2022 to 2023, rising 103.3% from $672,605 to $1,367,174. Net gains from asset sales showed substantial growth of 1,371.1% year-over-year.
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $16,493,506 | $42,389,832 | $61,504,866 |
| Revenue | $3,238,142 | $13,722,114 | $2,033,272 |
| Expenses | $75,185,851 | $33,217,742 | $30,356,618 |
| Qualifying Distributions | $75,119,443 | $32,920,465 | $29,280,975 |
| Net Investment Income | $3,158,273 | $13,566,325 | $905,577 |
| Distributable Amount | $2,463,435 | $4,452,518 | $5,761,073 |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 5 recipients in 2024
Grant Size Distribution
20 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for .
Leadership & Key People
Leadership team and compensation from IRS filings
Key leadership includes:
- Dr. P. Roy Vagelos — President/Director
- Ms. Diana T. Vagelos — Vice President/Treasurer
- Additional directors from the Vagelos family
None of the directors receive compensation for their roles.
Compensation Overview
From 2024 IRS filing
From 2024 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| DR P ROY VAGELOS | PRESIDENT/DIRECTOR | 2 | — |
| MS DIANA T VAGELOS | VICE PRESIDENT/TREASURER | 2 | — |
| MSCYNTHIA VAGELOS ROBERTS | DIRECTOR | 1 | — |
| ANDREW VAGELOS | DIRECTOR | 30 | — |
| RANDALL H VAGELOS | DIRECTOR | 1 | — |
| ELLEN VAGELOS MASSEUR | DIRECTOR | 1 | — |
Contact Information
Address
685 Third Avenue New York, NY 10017-4024
Phone
212-503-8800
Administrative Support
CBIZ Advisors LLC (c/o administrator) Marks Paneth & Shron LLP (in care of)
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Data last updated April 2026. Sourced from IRS Form 990-PF filings. Research dossier generated April 2026.
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