Manton Foundation
The Manton Foundation is a private foundation established in 1991 and based in New York City. It was founded by Jim and Gretchen Manton as a vehicle for their charitable giving. Jim Manton was a casualty underwriter who worked for American International Underwriter Corporation (later AIG). Following Jim's death in 2005, the Foundation received over $590 million from his estate, significantly expanding its grantmaking capacity. Today, the foundation is managed by the Mantons' descendants—their daughter Diana Morton and granddaughters Julia Krapf and Sandra Niles—and functions as a collaborative family endeavor.
Key facts about Manton Foundation
- EIN
- 13-3636372
- Latest 990 filing
- Form 990-PF, 2024
- Annual giving (2024)
- $32,944,343
- Grants made (2024)
- 75
- Average grant
- $439,258
- Median grant
- $199,000
- Total assets
- $691,568,485
- Primary geography
- Massachusetts (72% of itemized 2024 grant dollars)
- Accepts unsolicited proposals
- No
- How to apply
- The foundation accepts invitation-only proposals; unsolicited proposals are not accepted.
Data from IRS Form 990-PF, 2024; updated June 2026. Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Manton Foundation funds
By grant dollars, the top recipient states for Manton Foundation's 75 itemized 2024 grants were Massachusetts (72%), Connecticut (7%) and Maine (6%). The most frequent recipient cities were Boston, MA (12 grants), Westport, MA (10 grants), New Bedford, MA (8 grants) and New York, NY (5 grants). 9% of grants with a stated purpose were for general or operating support. Recurring purposes include "For Flood Relief" (3 grants) and "For Debt Relief" (3 grants).
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$691.6M
+4.7% YoY
Annual Giving
$32.9M
+1.0% YoY
Grant Count
75
+21.0% YoY
Avg Grant Size
$439K
-16.5% YoY
Under IRS private-foundation payout rules, Manton Foundation reported a distributable amount of $32.8M for 2024 — the minimum it must pay out in qualifying distributions.
Mission & Focus Areas
The Manton Foundation supports "a range of organizations and causes," with primary funding priorities including:
- Education: Including classroom and campus infrastructure projects
- Arts and Culture: Museums, galleries, and cultural institutions
- Medical Research: Including rare disease research and veterinary medicine
- Historic Preservation and Conservation: Environmental nonprofits and historic sites
- Behavioral Health and Mental Health Services
Grantmaking
The foundation accepts invitation-only proposals; unsolicited proposals are not accepted.
Grant Range
$526,356
Average Grant
$526,356
How to Apply
**
Ready to take the next step with Manton Foundation?
Geographic Focus
Where this funder awards grants
The foundation's grantmaking is primarily concentrated in New England, with some grants awarded in New York and other states.
Grant Distribution by State
Share of all 75 itemized 2024 grant dollars.
States
Cities
Financial History
Multi-year comparison from IRS filings
As of December 31, 2023
- Total assets: $660.4 million
- Total revenues: $20.5 million
- Total expenses: $36.6 million
- Investment income and dividends: $11.6 million
- Net gain from sale of non-inventory assets: $7.8 million
- Number of employees: 2
- Total liabilities: $0
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $691,568,485 | $660,409,806 | $631,991,282 |
| Revenue | $32,374,158 | $20,525,182 | $50,467,157 |
| Expenses | $37,082,537 | $36,596,288 | $40,179,579 |
| Qualifying Distributions | $34,474,783 | $34,433,875 | $34,261,933 |
| Net Investment Income | $29,731,052 | $17,896,849 | $45,489,128 |
| Distributable Amount | $32,831,025 | $31,152,113 | $32,956,742 |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
Grant Size Distribution
216 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2024 grants, the largest recipients include St Mark's School of Southborough ($3,000,000), Massachusetts Institute of Technology ($2,614,517), Tufts University ($2,300,000).
| Recipient | Purpose | Amount |
|---|---|---|
| ST MARK'S SCHOOL OF SOUTHBOROUGH SOUTHBOROUGH, MA | FOR THE JOHN C. WARREN '74 AND LAURA P. APPELL-WARREN FINANCIAL AID FUND | $3,000,000 |
| MASSACHUSETTS INSTITUTE OF TECHNOLOGY CAMBRIDGE, MA | FOR THE CENTER FOR GYNEPATHOLOGY RESEARCH | $2,614,517 |
| TUFTS UNIVERSITY NORTH GRAFTON, MA | FOR THE QALIBRA CT SYSTEM | $2,300,000 |
| BOSTON CHILDREN'S HOSPITAL BOSTON, MA | FOR THE CELL DISCOVERY NETWORK | $2,000,000 |
| MOUNT DESERT ISLAND HOSPITAL BAR HARBOR, ME | FOR THE CENTRAL UTILITY PLANT | $1,500,000 |
| THE TRUSTEES OF RESERVATIONS BOSTON, MA | FOR THE MILLBORN FARM CONSERVATION PROJECT | $1,500,000 |
| BROAD INSTITUTE CAMBRIDGE, MA | FOR SCAD-RELATED RESEARCH AND INVESTMENTS | $1,400,309 |
| THE NATURE CONSERVANCY NEW HAVEN, CT | FOR TREE SPECIES IN PERIL | $1,254,287 |
| THE LIVESTOCK INSTITUTE OF SOUTHERN NEW ENGLAND WESTPORT, MA | FOR DEBT RELIEF | $1,215,371 |
| PRESIDENT AND FELLOWS OF HARVARD COLLEGE CAMBRIDGE, MA | FOR CURRICULUM INNOVATION, BUILDING THE FRONT-LINE MENTAL HEALTH WORKFORCE, AND EDUCATIONAL RESOURCES | $1,014,382 |
Leadership & Key People
Leadership team and compensation from IRS filings
- Diana Morton - Daughter of founders; manages foundation
- Julia Krapf - Granddaughter of founders; manages foundation
- Sandra Niles - Granddaughter of founders; manages foundation
Compensation Overview
From 2024 IRS filing
From 2024 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| SANDRA NILES | TRUSTEE | 10 | $330,000 |
| JULIA KRAPF | TRUSTEE | 10 | $330,000 |
Recent News & Activity
Recent developments and announcements
The foundation has made notable grants in recent years, including:
$12 million to The Courtauld Institute of Art for The Manton Centre for British Art
The Manton Foundation donates $12 Million to The \u0122\uFFFD\uFFFD\uFFFD\$400,000 to BioBus for launching programs in New England
$250,000 grants for frangible technology research in equestrian sports
Manton Foundation Announces Second $250,000 Grant for Frangible Technology | EventingContact Information
- Location: New York City, NY (c/o Anchin, 3 Times Square)
- Phone: 212-840-3456
- Email: grants@mantonfoundation.org
- Website: https://www.mantonfoundation.org/
Frequently Asked Questions
What does Manton Foundation fund?
The Manton Foundation supports "a range of organizations and causes," with primary funding priorities including: • **Education**: Including classroom and campus infrastructure projects • **Arts and Culture**: Museums, galleries, and cultural institutions • **Medical Research**: Including rare disease research and veterinary medicine • **Historic Preservation and Conservation**: Environmental nonprofits and historic sites • **Behavioral Health and Mental Health Services**
How do I apply for a grant from Manton Foundation?
**Grant Activity (2023)** • Number of grants: 62 • Total annual giving: $32.6 million • Average grant size: $526,356 • Grant range: $100,000 - $12.0 million **Application Process** The foundation accepts invitation-only proposals; unsolicited proposals are not accepted. **Recent Grants (2023)** • Dana Hall School: $4,000,000 (Classroom Building Project) • Tufts University: $3,700,000 (Qalibra CT System) • The McLean Hospital Corporation Employee and Retiree Medical Trust: $2,000,000 (Youth and …
Where does Manton Foundation make grants?
The foundation's grantmaking is primarily concentrated in New England, with some grants awarded in New York and other states.
What size grants does Manton Foundation award?
In 2024, Manton Foundation awarded 75 grants totaling $32.9M — an average of about $439K per grant, based on its IRS Form 990 filings.
How much is Manton Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2024, Manton Foundation reported a distributable amount of $32.8M on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Manton Foundation's EIN?
Manton Foundation's EIN (Employer Identification Number) is 13-3636372. IRS Form 990 filing data is available on this page for 2020–2024.
Does Manton Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. The foundation accepts invitation-only proposals; unsolicited proposals are not accepted.
Explore Open Grants
Browse active grant opportunities in Manton Foundation'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.