Private Foundation

WILLIAM & SUSAN MATHESON FOUNDATION INC

Based in DE PERE, WI, WILLIAM & SUSAN MATHESON FOUNDATION INC operates as a Private Foundation. The organization reported $991K in revenue, $248K in expenses, $4.1M in total assets for fiscal year 2025. Imperigo tracks 48 reported grants from this foundation totaling approximately $870K.

EIN: 823801384 DE PERE, WI Latest filing: 2025

Total Revenue$991K

Total Expenses$248K

Total Assets$4.1M

Grants Given48

Grant Total$870K

Filing Years2021–2025

Sample Grants Given

GOLDEN HOUSE

GREEN BAY, WI · 2025

PROGRAM SUPPORT

$110,000

RAWHIDE YOUTH SERVICES

GREEN BAY, WI · 2025

PROGRAM SUPPORT

$45,000

SALVATION ARMY OF BROWN COUNTY

GREEN BAY, WI · 2025

PROGRAM SUPPORT

$16,400

CURATIVE CONNECTIONS

GREEN BAY, WI · 2025

PROGRAM SUPPORT

$15,000

PAUL'S PANTRY

GREEN BAY, WI · 2025

PROGRAM SUPPORT

$10,000

Showing up to 5 of 48 total records — full history available with membership.

Officers & Directors

DIRECTOR Amy Matheson

DIRECTOR Emily E Marinoff

DIRECTOR Joseph W Matheson

VICE PRES; SECRETARY; DIRE Susan M Matheson

PRESIDENT; TREASURER; DIRE William J Matheson

Officer compensation and complete director data available with membership.

Top Grant Purposes

PROGRAM SUPPORT

$870,500 48 grants

Financial Trends

Year	Revenue	Expenses	Assets
2025	$991K	$248K	$4.1M
2024	$221K	$191K	$3.7M
2023	$91K	$169K	$3.6M
2022	$62K	$137K	$3.7M
2021	$3.9M	$124K	$3.8M

Between 2021 and 2025, reported annual revenue declined from $3.9M to $991K (-75%), with total assets most recently reported at $4.1M.

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

Grant Geography

Grants from this foundation were reported to recipients in WI.

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

See the full picture for WILLIAM & SUSAN MATHESON FOUNDATION INC

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