The Patricia M and Robert H Martinsen Foundation
Invitation OnlyRidgefield, Connecticut · EIN 27-6961238 · Private foundation
Grants paid (2025)$403K
Organizations funded21
Typical grant$100
Total assets$1.1M
Half of its grants to organizations were between $100 and $200.
From the return
How to apply
On its return for tax year 2025 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
80% of grants went outside Connecticut.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Rvna | Ridgefield, CT | Medical purposes | $300,000 |
| Colgate University | Hamilton, NY | Educational purposes | $100,000 |
| Leadership Institute | New York, NY | Educational purposes | $400 |
| Alzheimer's Disease Research | Clarksburg, MD | Medical purposes | $300 |
| Claremont Institute | Claremont, CA | Social purposes | $200 |
| Founders Hall | Ridgefield, CT | Social purposes | $200 |
| Judicial Watch | Washington, DC | Social purposes | $200 |
| Lounsbury House | Ridgefield, CT | Social purposes | $200 |
| Massachusetts General Hospital Cardiovascular Research Center | Boston, MA | Medical purposes | $200 |
| American Cancer Society | Kennesaw, GA | Medical purposes | $100 |
| American Cornerstone Institute | Washington, DC | Social purposes | $100 |
| American Parkinsons Disease Association | Boston, MA | Medical purposes | $100 |
| American Red Cross of Connecticut | Farmington, CT | Medical purposes | $100 |
| Disabled Vets National Foundation | Lanham, MD | Social purposes | $100 |
| Heritage Foundation | Washington, DC | Educational purposes | $100 |
| National Law Enforcement Officers Memorial Fund | Washington, DC | Social purposes | $100 |
| Salvation Army | Alexandria, VA | Social purposes | $100 |
| State Policy Network | Arlington, VA | Social purposes | $100 |
| Tax Foundation | Washington, DC | Social purposes | $100 |
| Tunnel to Towers Foundation | Staten Island, NY | Social purposes | $100 |
| US Olympic Committee | Colorado Springs, CO | Social purposes | $100 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $402,900 | 21 |
| 2024 | $80,700 | 19 |
| 2023 | $258,800 | 18 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 18, 2026 - IRS e-file batch, object ID 202611389349100206
- IRS Tax Exempt Organization Search for EIN 27-6961238
- Profile updated Nov 6, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.