The John P Calamos Foundation
Invitation OnlyNaperville, Illinois · EIN 20-1383344 · Private foundation
Grants paid (2025)$1000K
Organizations funded13
Typical grant$10,000
Total assets$56.5M
Half of its grants to organizations were between $2,500 and $50,000.
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
61% of grants went outside Illinois.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| National Hellenic Museum | Chicago, IL | To support the mission of the charity | $650,000 |
| Assumption Greek Orthodox Church | Homer Glen, IL | To support the mission of the charity | $100,000 |
| St Nicholas Greek Orthodox Church | New York, NY | To support the mission of the charity | $100,000 |
| Hellenic Initiative Inc | New York, NY | To support the mission of the charity | $50,000 |
| Washington Oxi Day Foundation | Washington, DC | To support the mission of the charity | $50,000 |
| Loukoumi Make a Difference Foundation | Tuckahoe, NY | To support the mission of the charity | $25,000 |
| Gift of Adoption | Northbrook, IL | To support the mission of the charity | $10,000 |
| St Iakovos Retreat Center | Chicago, IL | To support the mission of the charity | $5,000 |
| Order of St Andrew | New York, NY | To support the mission of the charity | $4,000 |
| Hellenic American Academy | Lowell, MA | To support the mission of the charity | $2,500 |
| Hillsdale College | Hillsdale, MI | To support the mission of the charity | $2,000 |
| Turning Point USA | Lemont, IL | To support the mission of the charity | $1,000 |
| Heritage Foundation | Washington, DC | To support the mission of the charity | $100 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $999,600 | 13 |
| 2024 | $13,154,278 | 8 |
| 2023 | $1,612,000 | 13 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 13, 2026 - IRS e-file batch, object ID 202641339349104124
- IRS Tax Exempt Organization Search for EIN 20-1383344
- 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.