Private Foundation

HARRY F MARIANI FAMILY FOUNDATION

HARRY F MARIANI FAMILY FOUNDATION is a Private Foundation headquartered in LOCUST VALLEY, NY. Financial data from the 2025 filing: $432K revenue, $314K expenses, $5.8M total assets. IRS filings disclose 106 grants awarded by this foundation, totaling roughly $1.3M.

EIN: 843901549 LOCUST VALLEY, NY Latest filing: 2025

Total Revenue$432K

Total Expenses$314K

Total Assets$5.8M

Grants Given106

Grant Total$1.3M

Filing Years2021–2025

Sample Grants Given

TISCH MULTIPLE SCLEROSIS RESEARCH CENTER NEW YORK INC

NEW YORK, NY · 2025

GENERAL SUPPORT

$68,000

NORTHWELL HEALTH FOUNDATION

HUNTINGTON, NY · 2025

GENERAL SUPPORT

$56,000

THE BEAUFORT COUNTY OPEN LAND TRUST INC

BEAUFORT, SC · 2025

GENERAL SUPPORT

$50,000

PINGREE SCHOOL

SOUTH HAMILTON, MA · 2025

GENERAL SUPPORT

$27,000

UNIVERSITY OF NOTRE DAME

NOTRE DAME, IN · 2025

GENERAL SUPPORT

$25,000

Showing up to 5 of 106 total records — full history available with membership.

Officers & Directors

DIRECTOR/SEC./TREAS. James W Mariani

DIRECTOR John C Mariani

DIRECTOR Kathryn Mariani Altemus

DIRECTOR Virginia A Mariani

Officer compensation and complete director data available with membership.

Top Grant Purposes

GENERAL SUPPORT

$1,312,000 106 grants

Financial Trends

Year	Revenue	Expenses	Assets
2025	$432K	$314K	$5.8M
2024	$204K	$238K	$5.7M
2023	$174K	$275K	$5.7M
2022	$91K	$370K	$5.8M
2021	$466K	$324K	$6.1M

Between 2021 and 2025, reported annual revenue declined from $466K to $432K (-7%), with total assets most recently reported at $5.8M.

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, IN, MA, and 4 other states.

CTDCFLILINMANYSCTNTX

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

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