The Thorne Cox Family Foundation
Invitation OnlyBoston, Massachusetts · EIN 46-4274950 · Private foundation
Grants paid (2024)$572K
Organizations funded19
Typical grant$10,000
Total assets$4.3M
Half of its grants to organizations were between $5,000 and $45,000.
From the return
How to apply
On its return for tax year 2024 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
68% of grants went outside Massachusetts.
Grants paid in tax year 2024
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Avenue Concept Inc | Providence, RI | Operations budget assistance | $195,000 |
| Bay Chamber Concerts Inc | Rockport, ME | Operations budget assistance | $100,000 |
| Trustees of Dartmouth College | Hanover, NH | Operations budget assistance | $50,000 |
| Middlesex School | Concord, MA | Operations budget assistance | $50,000 |
| United States Ski and Snowboard Association | Boston, MA | Operations budget assistance | $45,000 |
| National Debutante Cotillion Foundation Inc | Washington, DC | Operations budget assistance | $31,200 |
| Boston Impact Initiative | Jamaica Plain, MA | Operations budget assistance | $25,000 |
| Milton Academy | Milton, MA | Operations budget assistance | $25,000 |
| Maine Public Broadcasting Corp | Lewiston, ME | Operations budget assistance | $10,000 |
| Presidents and Fellows of Harvard | Cambridge, MA | Operations budget assistance | $10,000 |
| The William A Farnsworth Library and Art Museum Inc | Rockland, ME | Operations budget assistance | $6,624 |
| Imagine North Carolina First | Raleigh, NC | Operations budget assistance | $5,000 |
| Knox County Homeless Coalition | Rockland, ME | Operations budget assistance | $5,000 |
| Lifeflight Foundation | Camden, ME | Operations budget assistance | $5,000 |
| YMCA of the USA | Chicago, IL | Operations budget assistance | $5,000 |
| Rockport Library Foundation | Rockport, ME | Operations budget assistance | $1,325 |
| Aspen Public Radio | Aspen, CO | Operations budget assistance | $1,000 |
| Living Observatory Inc | Plymouth, MA | Operations budget assistance | $1,000 |
| Rocky Mountain Public Media Inc | Denver, CO | Operations budget assistance | $1,000 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2024 | $572,149 | 19 |
| 2023 | $727,000 | 21 |
Sources
- IRS Form 990-PF, tax year 2024, filed Nov 10, 2025 - IRS e-file batch, object ID 202533149349101428
- IRS Tax Exempt Organization Search for EIN 46-4274950
- Profile updated Nov 5, 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.