Private Foundation

THE OAKRIVER FOUNDATION

THE OAKRIVER FOUNDATION is a Private Foundation headquartered in NORTHPORT, MI. Financial data from the 2025 filing: $166K revenue, $312K expenses, $3.5M total assets. IRS filings disclose 122 grants awarded by this foundation, totaling roughly $1.8M.

EIN: 364139320 NORTHPORT, MI Latest filing: 2025

Total Revenue$166K

Total Expenses$312K

Total Assets$3.5M

Grants Given122

Grant Total$1.8M

Filing Years2021–2025

Sample Grants Given

ATWILL MEMORIAL CHAPEL

NORTHPORT, MI · 2025

CHARITABLE

$45,000

UNIVERSITY OF MICHIGAN LIBRARY

ANN ARBOR, MI · 2025

EDUCATIONAL

$40,000

PEORIA RIVERFRONT MUSEUM

PEORIA, IL · 2025

CHARITABLE

$40,000

PHILLIPS ACADEMY PEABODY MUSEUM

ANDOVER, MA · 2025

CHARITABLE

$40,000

MUNSON HOSPITAL FOUNDATION

TRAVERSE CITY, MI · 2025

CHARITABLE

$10,000

Showing up to 5 of 122 total records — full history available with membership.

Officers & Directors

TRUSTEE Carolyn Ziebarths

TRUSTEE Peter Heidrich

TRUSTEE William Heidrich Ii

TRUSTEE William P Heidrich

Officer compensation and complete director data available with membership.

Top Grant Purposes

CHARITABLE

$1,213,400 91 grants

EDUCATIONAL

$550,500 31 grants

Financial Trends

Year	Revenue	Expenses	Assets
2025	$166K	$312K	$3.5M
2024	$687K	$291K	$3.7M
2023	$148K	$291K	$3.3M
2022	$394K	$293K	$3.4M
2021	$471K	$272K	$3.3M

Between 2021 and 2025, reported annual revenue declined from $471K to $166K (-65%), with total assets most recently reported at $3.5M.

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

Grant Geography

Grants from this foundation were reported to recipients in CA, CT, DC, IL, MA, ME, and 3 other states.

CACTDCILMAMEMINYVT

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

See the full picture for THE OAKRIVER FOUNDATION

Complete financials, all 122 grant records, officer compensation, year-over-year trend charts, a geographic grant map, and data exports — across 498,000+ organizations.

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