Private Foundation

MUNGER CHARITABLE TRUST NUMBER ONE C/O WILLIAM H BORTHWICK

MUNGER CHARITABLE TRUST NUMBER ONE C/O WILLIAM H BORTHWICK is a private foundation categorized as Private Foundation based in PASADENA, CA. Its most recent IRS filing (2025) reports revenue of $128.4M, expenses of $3.5M, total assets of $154.9M. Imperigo tracks 15 reported grants from this foundation totaling approximately $3.9M.

EIN: 276085454 PASADENA, CA Latest filing: 2025
Total Revenue$128.4M
Total Expenses$3.5M
Total Assets$154.9M
Grants Given15
Grant Total$3.9M
Filing Years2021–2025

Sample Grants Given

GREATER HORIZONS
KANSAS CITY, CA · 2024
(1) DESCRIPTION: 2 SHARES OF BERKSHIRE HATHAWAY CLASS A SECURITIES (2) BOOK VALUE: $1,221,336 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 04/22/2025 (6) PURPOSE: GENERAL OPERATING SUPPORT
$1,550,460
GREATER HORIZONS
KANSAS CITY, CA · 2024
(1) DESCRIPTION: 990 SHARES OF BERKSHIRE HATHAWAY CLASS B SECURITIES (2) BOOK VALUE: $450,411 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 04/24/2025 (6) PURPOSE: GENERAL OPERATING SUPPORT
$522,864
GREATER HORIZONS
KANSAS CITY, MO · 2024
(1) DESCRIPTION: 950 SHARES OF BERKSHIRE HATHAWAY CLASS B SECURITIES (2) BOOK VALUE: $397,188 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 04/22/2025 (6) PURPOSE: GENERAL OPERATING SUPPORT
$491,088
SOUTHERN CALIFORNIA PUBLIC RADIO
PASADENA, CA · 2024
(1) DESCRIPTION: 486 SHARES OF BERKSHIRE HATHAWAY CLASS B SECURITIES (2) BOOK VALUE: $197,855 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 04/15/2025 (6) PURPOSE: GENERAL OPERATING SUPPORT
$258,377
OUR AMERICAN FUTURE FOUNDATION
WASHINGTON, DC · 2024
(1) DESCRIPTION: 550 SHARES OF BERKSHIRE HATHAWAY CLASS B SECURITIES (2) BOOK VALUE: $36,476 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 09/19/2024 (6) PURPOSE: GENERAL OPERATING SUPPORT
$252,846

Showing up to 5 of 15 total records — full history available with membership.

Officers & Directors

TRUSTEE William H Borthwick

Officer compensation and complete director data available with membership.

Top Grant Purposes

(1) DESCRIPTION: 2 SHARES OF BERKSHIRE HATHAWAY CLASS A SECURITIES (2) BOOK VALUE: $1,221,336 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 04/22/2025 (6) PURPOSE: GENERAL OPERATING SUPPORT
$1,550,460 1 grant
(1) DESCRIPTION: 990 SHARES OF BERKSHIRE HATHAWAY CLASS B SECURITIES (2) BOOK VALUE: $450,411 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 04/24/2025 (6) PURPOSE: GENERAL OPERATING SUPPORT
$522,864 1 grant
(1) DESCRIPTION: 950 SHARES OF BERKSHIRE HATHAWAY CLASS B SECURITIES (2) BOOK VALUE: $397,188 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 04/22/2025 (6) PURPOSE: GENERAL OPERATING SUPPORT
$491,088 1 grant
(1) DESCRIPTION: 486 SHARES OF BERKSHIRE HATHAWAY CLASS B SECURITIES (2) BOOK VALUE: $197,855 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 04/15/2025 (6) PURPOSE: GENERAL OPERATING SUPPORT
$258,377 1 grant
(1) DESCRIPTION: 550 SHARES OF BERKSHIRE HATHAWAY CLASS B SECURITIES (2) BOOK VALUE: $36,476 (3) METHOD USED TO DETERMINE BOOK VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE RECEIVED BY THE FOUNDATION. (4) METHOD USED TO DETERMINE FAIR MARKET VALUE: AVERAGE OF THE HIGH/LOW ON THE DATE THE SECURITIES WERE DONATED. (5) DATE OF THE GIFT: 09/19/2024 (6) PURPOSE: GENERAL OPERATING SUPPORT
$252,846 1 grant

Financial Trends

Year Revenue Expenses Assets
2025 $128.4M $3.5M $154.9M
2024 $25K $253K $94K
2023 $22K $28K $111K
2022 $17K $23K $117K
2021 $15K $21K $123K

Between 2021 and 2025, reported annual revenue grew from $15K to $128.4M (+842312%), with total assets most recently reported at $154.9M.

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

Grant Geography

Grants from this foundation were reported to recipients in CA, DC, MO.

CADCMO

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

See the full picture for MUNGER CHARITABLE TRUST NUMBER ONE C/O WILLIAM H BORTHWICK

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