Private Foundation

THE SONNEBORN FOUNDATION INC C/O MARK D NEUMANN

THE SONNEBORN FOUNDATION INC C/O MARK D NEUMANN is a Private Foundation headquartered in BETHESDA, MD. Financial data from the 2025 filing: $37K revenue, $1K expenses, $761K total assets. IRS filings disclose 23 grants awarded by this foundation, totaling roughly $274K.

EIN: 911987558 BETHESDA, MD Latest filing: 2025

Total Revenue$37K

Total Expenses$1K

Total Assets$761K

Grants Given23

Grant Total$274K

Filing Years2021–2025

Sample Grants Given

THE FISTULA FOUNDATION

SAN JOSE, CA · 2024

GENERAL

$500

GIVEDIRECTLY INC

NEW YORK, NY · 2024

GENERAL

$500

THE ASSOCIATED

BALTIMORE, MD · 2023

GENERAL

$80,000

BALTIMORE LEADERSHIP SCHOOL FOR YOUNG WOMEN

BALTIMORE, MD · 2023

GENERAL

$5,000

JAMESON HUMANE

NAPA, CA · 2023

GENERAL

$1,500

Showing up to 5 of 23 total records — full history available with membership.

Officers & Directors

PRESIDENT / TREASURER Mark Neumann

SECRETARY Patti Neumann

OFFICER Robin Neumann

Officer compensation and complete director data available with membership.

Top Grant Purposes

GENERAL

$273,673 23 grants

Financial Trends

Year	Revenue	Expenses	Assets
2025	$37K	$1K	$761K
2024	$37K	$88K	$726K
2023	$36K	$7K	$776K
2022	$37K	$8K	$746K
2021	$39K	—	$714K

Between 2021 and 2025, reported annual revenue declined from $39K to $37K (-3%), with total assets most recently reported at $761K.

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

Grant Geography

Grants from this foundation were reported to recipients in CA, MD, NY, PA.

CAMDNYPA

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

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