Private Foundation

MAINWARING ARCHIVE FOUNDATION C/O BROWN BROTHERS HARRIMAN TRUST CO

MAINWARING ARCHIVE FOUNDATION C/O BROWN BROTHERS HARRIMAN TRUST CO, of NEW YORK, NY, is a Private Foundation tracked in Imperigo's IRS 990 database. The 2023 filing shows $585 in revenue, $21K in expenses. IRS filings disclose 4 grants awarded by this foundation, totaling roughly $15K.

EIN: 527106931 NEW YORK, NY Latest filing: 2023

Total Revenue$585

Total Expenses$21K

Grants Given4

Grant Total$15K

Filing Years2020–2023

Sample Grants Given

AMERICAN PHILOSOPHICAL SOCIETY

PHILADELPHIA, PA · 2023

CHARITABLE CONTRIBUTION

$4,768

AMERICAN PHILOSOPHICAL SOCIETY

PHILADELPHIA, PA · 2023

CHARITABLE CONTRIBUTION

$33

MONTANA STATE

BOZEMAN, MT · 2022

CHARITABLE CONTRIBUTION

$5,000

AMERICAN PHILOSOPHICAL SOCIETY

PHILADELPHIA, PA · 2021

CHARITABLE CONTRIBUTION

$5,000

Showing up to 5 of 4 total records — full history available with membership.

Officers & Directors

TRUSTEE Brown Brothers Harriman Trust Co

TRUSTEE Susan Mainwaring Roberts

Officer compensation and complete director data available with membership.

Top Grant Purposes

CHARITABLE CONTRIBUTION

$14,801 4 grants

Financial Trends

Year	Revenue	Expenses	Assets
2023	$585	$21K	—
2022	$3K	$25K	$20K
2021	$59	$18K	$43K
2020	$259K	$231K	$61K

Between 2020 and 2023, reported annual revenue declined from $259K to $585 (-100%).

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

Grant Geography

Grants from this foundation were reported to recipients in MT, PA.

MTPA

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

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