Private Foundation

DONALD GRANT & ANN MARTIN CALDER FOUNDAT

DONALD GRANT & ANN MARTIN CALDER FOUNDAT, of HOBE SOUND, FL, is a Private Foundation tracked in Imperigo's IRS 990 database. The 2025 filing shows $587K in revenue, $137K in expenses, $1.7M in total assets. IRS filings disclose 246 grants awarded by this foundation, totaling roughly $2.6M.

EIN: 133917776 HOBE SOUND, FL Latest filing: 2025

Total Revenue$587K

Total Expenses$137K

Total Assets$1.7M

Grants Given246

Grant Total$2.6M

Filing Years2021–2025

Sample Grants Given

ATLANTIC SALMON FOUNDATION

CALAIS, ME · 2025

GENERAL SUPPORT

$36,000

RUSH UNIVERSITY SYSTEM FOR HEALTH

CHICAGO, IL · 2025

GENERAL SUPPORT

$25,000

NATIONAL SPORTING LIBRARY

MIDDLEBURG, VA · 2025

GENERAL SUPPORT

$15,000

JUPITER ISLAND MEDICAL CLINIC

HOBE SOUND, FL · 2025

GENERAL SUPPORT

$5,000

JUPITER ISLAND ARTS COUNCIL

JUPITER, FL · 2025

GENERAL SUPPORT

$5,000

Showing up to 5 of 246 total records — full history available with membership.

Officers & Directors

DIRECTOR Ann Martin Calder

DIRECTOR Cornelia Martin Calder

DIRECTOR Donald Grant Calder

DIRECTOR Donald Grant Calder Jr

DIRECTOR Isabella Swift Calder

Officer compensation and complete director data available with membership.

Top Grant Purposes

GENERAL SUPPORT

$1,922,990 215 grants

CONSERVATION FUNDS

$225,000 3 grants

GENERAL PURPOSE

$127,000 4 grants

MANTEL CELL LYMPHHOMA, GENERAL SUPPORT

$101,000 1 grant

SCHOLARSHIP FUND

$60,000 1 grant

Financial Trends

Year	Revenue	Expenses	Assets
2025	$587K	$137K	$1.7M
2024	$341K	$395K	$1.2M
2023	$195K	$559K	$1.3M
2022	$1.2M	$389K	$1.7M
2021	$306K	$395K	$842K

Between 2021 and 2025, reported annual revenue grew from $306K to $587K (+92%), with total assets most recently reported at $1.7M.

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

Grant Geography

Grants from this foundation were reported to recipients in CT, DC, FL, IL, KY, MA, and 4 other states.

CTDCFLILKYMAMEMTNHNJ

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

See the full picture for DONALD GRANT & ANN MARTIN CALDER FOUNDAT

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Full Financial History Complete Grant Activity Officer Compensation Year-over-Year Charts Geographic Grant Map Data Exports