Private foundation · EIN 83-0332938
Nion Robert Thieriot Foundation
Elk Mountain, WY
Nion Robert Thieriot Foundation is a private foundation based in Elk Mountain, WY. On its Form 990-PF for tax year 2025, it reported $862K in grants and contributions paid across 8 grants, with $17.7M in assets (fair market value). It reports that it gives only to preselected charitable organizations and does not accept unsolicited requests for funds. Its largest grants went to Greenagers, Berkshire Natural Resources Council and New Marlborough Land Trust.
How to request funding
Gives only to preselected organizations. On its Form 990-PF, this foundation checked the box saying it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Relationships and invitations usually come first.
As reported on the foundation's Form 990-PF for tax year 2025. Requirements change; confirm with the foundation before applying.
Largest grants, tax year 2025
Historical data · not a prediction| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Greenagers | South Egremont, MA | Donation | $252,000 |
| Berkshire Natural Resources Council | Pittsfield, MA | Donation | $175,000 |
| New Marlborough Land Trust | Southfield, MA | Donation | $150,000 |
| Sonoma Land Trust | Santa Rosa, CA | Donation | $130,000 |
| Massachusetts Spca | Boston, MA | Donation | $50,000 |
| Monterey Preservation Land Trust | Monterey, MA | Donation | $50,000 |
| The Nature Conservancy | San Francisco, CA | Donation | $50,000 |
| Sturgeon's Mill Restoration Project | Sebastopol, CA | Donation | $5,000 |
Names and purposes as reported to the IRS.
Where its grants went
Quick answers
Does Nion Robert Thieriot Foundation accept grant applications?
According to its Form 990-PF for tax year 2025, Nion Robert Thieriot Foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
How much does Nion Robert Thieriot Foundation give each year?
For tax year 2025, it reported $862,000 in grants and contributions paid (8 grants). Giving can change from year to year.
What organizations has Nion Robert Thieriot Foundation funded?
Its largest grants in tax year 2025 went to Greenagers (MA), $252K, Berkshire Natural Resources Council (MA), $175K, New Marlborough Land Trust (MA), $150K, Sonoma Land Trust (CA), $130K and Massachusetts Spca (MA), $50K.