Private Foundation

THE JOHN P CALAMOS FOUNDATION C/O CALAMOS FAMILY OFFICE

THE JOHN P CALAMOS FOUNDATION C/O CALAMOS FAMILY OFFICE, of NAPERVILLE, IL, is a Private Foundation tracked in Imperigo's IRS 990 database. The 2025 filing shows $8.2M in revenue, $1.0M in expenses, $56.5M in total assets. IRS filings disclose 89 grants awarded by this foundation, totaling roughly $19.0M.

EIN: 201383344 NAPERVILLE, IL Private Independent Foundations NTEE: T22 Latest filing: 2025
Total Revenue$8.2M
Total Expenses$1.0M
Total Assets$56.5M
Grants Given89
Grant Total$19.0M
Filing Years2021–2025

Sample Grants Given

NATIONAL HELLENIC MUSEUM
CHICAGO, IL · 2025
TO SUPPORT THE MISSION OF THE CHARITY
$650,000
ASSUMPTION GREEK ORTHODOX CHURCH
HOMER GLEN, IL · 2025
TO SUPPORT THE MISSION OF THE CHARITY
$100,000
ST NICHOLAS GREEK ORTHODOX CHURCH
NEW YORK, NY · 2025
TO SUPPORT THE MISSION OF THE CHARITY
$100,000
HELLENIC INITIATIVE INC
NEW YORK, NY · 2025
TO SUPPORT THE MISSION OF THE CHARITY
$50,000
WASHINGTON OXI DAY FOUNDATION
WASHINGTON, DC · 2025
TO SUPPORT THE MISSION OF THE CHARITY
$50,000

Showing up to 5 of 89 total records — full history available with membership.

Officers & Directors

CO-TRUSTEE James R Adams
CO-TRUSTEE John P Calamos Sr
CO-TRUSTEE Kenneth S Witkowski
CO-TRUSTEE Laura Calamos
CO-TRUSTEE Mae Calamos

Officer compensation and complete director data available with membership.

Top Grant Purposes

TO SUPPORT THE MISSION OF THE CHARITY
$18,555,378 80 grants
TO SUPPORT THE MISSION OF THE CHICAGO CEO COVID COALITION
$200,000 1 grant
TO SUPPORT THE MUSEUM IN THE EDUCATION AND ADVANCEMENT OF PROSPECTIVE GENERATIONS
$166,608 2 grants
TO SUPPORT THE MISSION OF THE CHURCH
$25,000 1 grant
TO SUPPORT THE MISSION OF THE FOUNDATION
$20,000 2 grants

Financial Trends

Year Revenue Expenses Assets
2025 $8.2M $1.0M $56.5M
2024 $14.6M $13.2M $44.9M
2023 $1.0M $1.6M $36.3M
2022 $5.1M $792K $28.8M
2021 $13.6M $281K $40.7M

Between 2021 and 2025, reported annual revenue declined from $13.6M to $8.2M (-40%), with total assets most recently reported at $56.5M.

Interactive year-over-year charts and full filing details available with membership.

Grant Geography

Grants from this foundation were reported to recipients in CA, DC, FL, IL, MA, MI, and 2 other states.

CADCFLILMAMINYWI

Full geographic grant map with state-by-state breakdown available with membership.

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