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MARINUS AND MINNA B KOSTER FOUNDATION

POTOMAC FALLS, VA EIN 27-1533411 Philanthropy & GrantmakingT22 501C3 PRIVATE FOUNDATION
$455K
Revenue
10
Filings
$2.0M
Total Grants
190
Grant Records
Latest Financial Summary
Fiscal Year Revenue Expenses Net Assets Contributions
FY ending Jun 2025 $455K $373K $7.5M $0
Full Financial History
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Key Officers
R
ROSETTE M WILLS
PRESIDENT
B
BARBARA FREEDMAN
SECRETARY
M
MICHAEL T FLYNN
TREASURER
Executive Compensation
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Top Grant Recipients (Teaser)
EDLAVITCH JEWISH COMMUNITY CENTER OF DC $30K
EDLAVITCH JEWISH COMMUNITY CENTER OF WASHINGTON DC $26K
EDLAVITCH JEWISH COMMUNITY CENTER OF WASHINGTON DC $26K
190 total grants · $2.0M total giving
Complete Grants Database
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Filing History
990PF
FY ending Jun 2025
990PF
FY ending Jun 2024
990PF
FY ending Jun 2023
990PF
FY ending Jun 2022
Period ended 2022-06-30
IRS990PF
FY ending Jun 2021
990PF
FY ending Jun 2020
990PF
FY ending Jun 2019
Period ended 2019-06-30
990PF
FY ending Jun 2018
Period ended 2018-06-30
990PF
FY ending Jun 2018
Period ended 2018-06-30
990PF
FY ending Jun 2018
Period ended 2018-06-30
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