Private Foundation

SONNTAG FAMILY FOUNDATION (THE)

SONNTAG FAMILY FOUNDATION (THE) is a private foundation categorized as Private Foundation based in PHOENIX, AZ. Its most recent IRS filing (2025) reports revenue of $70K, expenses of $178K, total assets of $2.3M. Imperigo tracks 74 reported grants from this foundation totaling approximately $899K.

EIN: 262876575 PHOENIX, AZ Latest filing: 2025

Total Revenue$70K

Total Expenses$178K

Total Assets$2.3M

Grants Given74

Grant Total$899K

Filing Years2021–2025

Sample Grants Given

SUN DEVIL ATHLETICS

TEMPE, AZ · 2025

CHARITABLE CONTRIBUTION

$44,250

WOMENS BOARD OF BARROW NEUROLOGICAL FOUNDATION

PHOENIX, AZ · 2025

CHARITABLE CONTRIBUTION

$25,000

NATIONAL RESOURCES DEFENSE COUNCIL

NEW YORK, NY · 2025

CHARITABLE CONTRIBUTION

$20,000

SAN DIEGO FOOD BANK

SAN DIEGO, CA · 2025

CHARITABLE CONTRIBUTION

$20,000

ARCS FOUNDATION PHOENIX CHAPTER

PHOENIX, AZ · 2025

CHARITABLE CONTRIBUTION

$17,000

Showing up to 5 of 74 total records — full history available with membership.

Officers & Directors

SECRETARY/TREASURER Lynne Sonntag

PRESIDENT Volker Sonntag

Officer compensation and complete director data available with membership.

Top Grant Purposes

CHARITABLE

$577,173 54 grants

CHARITABLE CONTRIBUTION

$321,500 20 grants

Financial Trends

Year	Revenue	Expenses	Assets
2025	$70K	$178K	$2.3M
2024	$127K	$187K	$2.4M
2023	$83K	$103K	$2.4M
2022	$212K	$96K	$2.5M
2021	$693K	$49K	$2.3M

Between 2021 and 2025, reported annual revenue declined from $693K to $70K (-90%), with total assets most recently reported at $2.3M.

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

Grant Geography

Grants from this foundation were reported to recipients in AZ, CA, FL, GA, MO, NY.

AZCAFLGAMONY

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

See the full picture for SONNTAG FAMILY FOUNDATION (THE)

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