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
Under IRS private-foundation payout rules, The Marianthi Foundation Inc reported a distributable amount of $2.5M for 2024 — the minimum it must pay out in qualifying distributions.
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
Among its reported 2024 grants, the largest include Columbia University ($41,620,616), University of Pennsylvania ($21,285,777), Barnard College ($12,191,353).
| Recipient | Purpose | Amount |
|---|---|---|
| BARNARD COLLEGE NEW YORK, NY | TO FURTHER DONEE'S EXEMPT PURPOSE | $12,191,353 |
| BISHOP HENDRICKEN HIGH SCHOOL WARWICK, RI | TO FURTHER DONEE'S EXEMPT PURPOSE | $10,000 |
| CENTRAL PARK CONSERVANCY NEW YORK, NY | TO FURTHER DONEE'S EXEMPT PURPOSE | $5,000 |
| COLUMBIA UNIVERSITY NEW YORK, NY | TO FURTHER DONEE'S EXEMPT PURPOSE | $41,620,616 |
| UNIVERSITY OF PENNSYLVANIA PHILADELPHIA, PA | TO FURTHER DONEE'S EXEMPT PURPOSE | $21,285,777 |
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)
Frequently Asked Questions
What does The Marianthi Foundation Inc fund?
The foundation's primary funding interests include: • Arts and Culture • Education • Environment and Natural Resources • Health • Philanthropy, Voluntarism & Grantmaking
How do I apply for a grant from The Marianthi Foundation Inc?
**Grant Activity & Amounts** Recent grants made by the foundation include: • University of Pennsylvania: $14,911,767 (2023) • Columbia University: $14,000,000 (2023) • New Jersey Performing Arts Center Corporation: $1,000,000 (2023) The foundation's grant sizes typically range from $2,000 to over $41 million, reflecting a diverse portfolio of funding commitments. **Financial Activity** • Total giving (cumulative): $75,112,746 • 2023 expenses: $33,217,742 • 2023 revenues: $13,722,114
Where does The Marianthi Foundation Inc make 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)
What size grants does The Marianthi Foundation Inc award?
In 2024, The Marianthi Foundation Inc awarded 5 grants totaling $75.1M — an average of about $15.0M per grant, based on its IRS Form 990 filings.
How much is The Marianthi Foundation Inc required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2024, The Marianthi Foundation Inc reported a distributable amount of $2.5M on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is The Marianthi Foundation Inc's EIN?
The Marianthi Foundation Inc's EIN (Employer Identification Number) is 22-6616473. IRS Form 990 filing data is available on this page for 2020–2024.
Explore Open Grants
Browse active grant opportunities in The Marianthi Foundation Inc's focus areas in our free grants database
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Data last updated June 2026. Sourced from IRS Form 990-PF filings. Research dossier generated April 2026.
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