Mainwaring Archive Foundation is a private foundation focused on Science & Technology, based in NEW YORK, NY. IRS filing data is available from 2020 through 2023. In 2023, it awarded 2 grants totaling $5K. Net investment income was $526.
Financial Overview
From 2023 IRS Form 990-PF · View filing
Total Assets
—
-100.0% YoY
Annual Giving
$5K
-4.0% YoY
Grant Count
2
+100.0% YoY
Avg Grant Size
$2K
-52.0% YoY
About Mainwaring Archive Foundation
Based on IRS filings
Mainwaring Archive Foundation is a private foundation focused on Science & Technology, based in NEW YORK, NY. IRS filing data is available from 2020 through 2023. In 2023, it awarded 2 grants totaling $5K. Net investment income was $526.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2023 | 2022 | 2021 |
|---|---|---|---|
| Total Assets | — | $20,354 | $42,992 |
| Revenue | $585 | $2,835 | $59 |
| Expenses | $20,930 | $25,482 | $18,344 |
| Qualifying Distributions | $4,801 | $5,000 | $5,000 |
| Net Investment Income | $526 | $382 | — |
| Distributable Amount | — | — | — |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2023
Grant Size Distribution
4 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for .
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2023 IRS filing
From 2023 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| BROWN BROTHERS HARRIMAN TRUST CO | TRUSTEE | 1 | $29 |
| SUSAN MAINWARING ROBERTS | TRUSTEE | 1 | — |
Subject Areas
Focus areas based on grantmaking activity
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Data last updated April 2026. Sourced from IRS Form 990-PF filings.
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