Square One Foundation
Square One Foundation is a nonprofit organization focused on Philanthropy, based in St Louis, MO. IRS filing data is available from 2020 through 2025.
Key facts about Square One Foundation
- EIN
- 43-1553126
- Latest 990 filing
- Form 990-PF, 2025
Data from IRS Form 990-PF, 2025; updated September 2026.
How Square One Foundation gives
- Giving grew 100% from 2020 to 2023. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Next steps with Square One Foundation
- How to evaluate Square One Foundation as a funder
Our grant prospecting guide: read the 990-PF, check fit, and decide whether to apply.
- Draft an LOI to Square One Foundation with AI
AI grant writing that drafts from your organization’s own materials, in your voice.
- Track this opportunity in a free grant tracker
A free Google Sheets or Excel template for deadlines, award terms, and reports due.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
—
Revenue
—
Net Investment Income
—
Expenses
—
About Square One Foundation
Based on IRS filings
Square One Foundation is a nonprofit organization focused on Philanthropy, based in St Louis, MO. IRS filing data is available from 2020 through 2025.
Focus Areas
Ready to take the next step with Square One Foundation?
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | — | — | — |
| Revenue | — | — | — |
| Expenses | — | — | — |
| Qualifying Distributions | — | — | — |
| Net Investment Income | — | — | — |
| Distributable Amount | — | — | — |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2025
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 0 recipients in 2025
Grant Size Distribution
4 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for 2025.
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
No officer or director reported compensation in the available filings.
From 2025 IRS filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Jill Petzall | President | — | — |
| Nichole Deal | Vice President | — | — |
| Kim Gladstone | Secretary | — | — |
| Tullia Hamilton | Treasurer | — | — |
| Mary Schoolman | Director | — | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is Square One Foundation?
Square One Foundation is a nonprofit organization focused on Philanthropy, based in St Louis, MO. It holds — in total assets as of 2025.
Where does Square One Foundation operate?
Square One Foundation has awarded grants in Missouri.
What is Square One Foundation's EIN?
Square One Foundation's EIN (Employer Identification Number) is 43-1553126. IRS Form 990 filing data is available on this page for 2020–2025.
Explore Open Grants
Browse active grant opportunities in Square One Foundation's focus areas in our free grants database
Similar Funders
Funders that support many of the same organizations
Fischer-Bauer-Knirps Foundation
St Louis, MO
Assets
—
Grants
129
Total Given
$125K
Edward Jones Foundation
St Louis, MO
Assets
—
Grants
203
Total Given
$15.1M
Rubinbrown Charitable Foundation
Saint Louis, MO
Assets
—
Grants
7
Total Given
$105K
Atwater Kent Foundation
Palm Beach, FL
Assets
$1.9M
Grants
49
Total Given
$147K
Russell E Browning Family Foundation Inc
Saint Louis, MO
Assets
$1.9M
Grants
28
Total Given
$111K
American Water Charitable Foundationinc
Camden, NJ
Assets
$72.5M
Grants
407
Total Given
$5.2M
East Missouri Foundation
Ballwin, MO
Assets
$13.0M
Grants
42
Total Given
$545K
Means Database Inc
Washington, DC
Assets
$832K
Grants
108
Total Given
$113.5M
The Prufrock Foundation
Saint Louis, MO
Assets
—
Grants
27
Total Given
$110K
Bunge Foundation
Chesterfield, MO
Assets
—
Grants
65
Total Given
$1.1M
MAZON A Jewish Response to Hunger
Sherman Oaks, CA
Assets
$11.7M
Grants
51
Total Given
$3.9M
Frank and Bessie Spielberg Foundation
Wildwood, MO
Assets
—
Grants
60
Total Given
$37K
More Funders in Missouri
Data last updated September 2026. Sourced from IRS Form 990-PF filings.