Nonprofit · EIN 20-1383344
JOHN P CALAMOS SR FOUNDATION
Tax-exempt · NAPERVILLE, IL 60563
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $8,211,123 | $1,042,567 | $7,168,556 | $56,507,546 | $0 | $56,507,546 |
| December 31, 2024 | 990-PF | $14,594,494 | $13,159,457 | $1,435,037 | $44,851,372 | $0 | $44,851,372 |
| December 31, 2023 | 990-PF (amended) | $1,036,214 | $1,616,571 | -$580,357 | $36,343,979 | $0 | $36,343,979 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $5,000,000
- Dividends
- $126,474
- Net gain from sales of assets
- $3,084,649
Expenses
- Grants and similar amounts paid
- $999,600
- Compensation of officers, directors and key employees
- $0
- Disbursements for charitable purposes
- $1,003,489
- Excise tax on investment income
- $44,623
Balance sheet and other
- Total assets, start of year
- $44,851,372
- Total assets, end of year
- $56,507,546
- Total liabilities, end of year
- $0
- Net assets, end of year
- $56,507,546
- Fair market value of assets
- $56,507,546
- Qualifying distributions
- $1,003,489
- Net investment income
- $3,217,614
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| JOHN P CALAMOS SR 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| MAE CALAMOS 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| LAURA CALAMOS 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| JAMES R ADAMS 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| KENNETH S WITKOWSKI 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
990-PF for the year ended December 31, 2024: 5 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| JOHN P CALAMOS SR 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| MAE CALAMOS 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| LAURA CALAMOS 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| JAMES R ADAMS 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| KENNETH S WITKOWSKI 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
990-PF for the year ended December 31, 2023: 5 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| JOHN P CALAMOS SR 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| MAE CALAMOS 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| LAURA CALAMOS 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| JAMES R ADAMS 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
| KENNETH S WITKOWSKI 2020 CALAMOS COURT, NAPERVILLE, IL 605632793 | CO-TRUSTEE | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 2020 CALAMOS CT STE 200, NAPERVILLE, IL 60563-2793
- In care of
- % CALAMOS FAMILY OFFICE
- Signed the 990-PF
- JOHN CALAMOS SR, TRUSTEE
- Phone
- (630) 245-7260
- Return prepared by
- SIKICH LLC
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 20-1383344
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private non-operating foundation
- Donations deductible (Pub 78)
- Private foundation, 30% limit
- Exempt since
- 2006
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T22)
- Assets (IRS master file)
- $56,507,546
- Income (IRS master file)
- $8,211,123
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $8,211,123 | $1,042,567 | $56,507,546 | IRS |
| 990-PF | December 2024 | $14,594,494 | $13,159,457 | $44,851,372 | IRS |
| 990-PF | December 2023 | $1,036,214 | $1,616,571 | $36,343,979 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | IRS |
| 990-PF | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 20-1383344).
Questions about JOHN P CALAMOS SR FOUNDATION
- What is the EIN of JOHN P CALAMOS SR FOUNDATION?
- The employer identification number (EIN) of JOHN P CALAMOS SR FOUNDATION is 20-1383344.
- Is JOHN P CALAMOS SR FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2006.
- Are donations to JOHN P CALAMOS SR FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does JOHN P CALAMOS SR FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of JOHN P CALAMOS SR FOUNDATION due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did JOHN P CALAMOS SR FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of JOHN P CALAMOS SR FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 5 people; 0 received compensation from the organization.
- How much revenue does JOHN P CALAMOS SR FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $8,211,123, expenses of $1,042,567 and total assets of $56,507,546 at year end.
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