Private Foundation

OLSEN AND TANG FAMILY FOUNDATION

OLSEN AND TANG FAMILY FOUNDATION is a Private Foundation headquartered in SCOTTSDALE, AZ. Financial data from the 2025 filing: $85K revenue, $43K expenses, $373K total assets. IRS filings disclose 11 grants awarded by this foundation, totaling roughly $621K.

EIN: 871181099 SCOTTSDALE, AZ Private Grantmaking Foundations NTEE: T20 Latest filing: 2025
Total Revenue$85K
Total Expenses$43K
Total Assets$373K
Grants Given11
Grant Total$621K
Filing Years2021–2025

Sample Grants Given

MAYO CLINIC
SCOTTSDALE, AZ · 2025
CHARITABLE/HEALTH
$20,000
NPR
WASHINGTON DC, DC · 2025
EDUCATION
$5,000
UNITED FOOD BANK
MESA, AZ · 2025
CHARITABLE/HEALTH
$5,000
ARIZONA PBS
PHOENIX, AZ · 2025
EDUCATIONAL
$5,000
MAYO CLINIC
SCOTTSDALE, AZ · 2024
CHARITABLE/HEALTH
$20,000

Showing up to 5 of 11 total records — full history available with membership.

Officers & Directors

Director Wanda Tang
Director William R Olsen

Officer compensation and complete director data available with membership.

Top Grant Purposes

PUBLIC CHARITY
$491,182 1 grant
CHARITABLE/HEALTH
$85,000 5 grants
RELIGIOUS
$25,000 2 grants
CHARITABLE / HEALTH
$10,000 1 grant
EDUCATION
$5,000 1 grant

Financial Trends

Year Revenue Expenses Assets
2025 $85K $43K $373K
2024 $184K $56K $331K
2023 $104K $27K $202K
2022 $162K $37K $125K
2021 $1.5M $495K $75K

Between 2021 and 2025, reported annual revenue declined from $1.5M to $85K (-95%), with total assets most recently reported at $373K.

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, DC.

AZCADC

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

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