Donald Grant and Ann Martin Calder Foundation
Invitation OnlyHobe Sound, Florida · EIN 13-3917776 · Private foundation
Grants paid (2025)$92K
Organizations funded11
Typical grant$2,000
Total assets$5.7M
Half of its grants to organizations were between $1,000 and $15,000.
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
70% of grants went outside Florida.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Atlantic Salmon Foundation | Calais, ME | General support | $36,000 |
| Rush University System for Health | Chicago, IL | General support | $25,000 |
| National Sporting Library | Middleburg, VA | General support | $15,000 |
| Jupiter Island Medical Clinic | Hobe Sound, FL | General support | $5,000 |
| Jupiter Island Arts Council | Jupiter, FL | General support | $5,000 |
| Marina Orth Foundation | Washington, DC | General support | $2,000 |
| 1000 Friends of Florida | Tallahassee, FL | General support | $1,000 |
| American University of Paris | Paris, FR | General support | $1,000 |
| Irish Georgian Society | Chicago, IL | General support | $1,000 |
| Afs Intercultural Programs USA | New York, NY | General support | $500 |
| St Andrew's Dune Church | Southampton, NY | General support | $200 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $91,700 | 11 |
| 2024 | $344,400 | 34 |
| 2023 | $491,285 | 26 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 12, 2026 - IRS e-file batch, object ID 202621329349104212
- IRS Tax Exempt Organization Search for EIN 13-3917776
- Profile updated Nov 7, 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.