Muriel F Siebert Foundation Inc Grants
Private foundation · Southampton, NY · EIN 13-6266367 · IRS 990-PF filings through tax year 2025 · Invitation only: no unsolicited applications
Muriel F Siebert Foundation Inc is a private foundation based in Southampton, NY (EIN 13-6266367). Its IRS Form 990-PF filings through tax year 2025 report $3.5M paid in 228 grants, with a median grant of $10K. The most recent filing reports total assets of $43.5M. It reports that it gives only to preselected organizations and does not accept unsolicited applications.
- Total grants paid
- $3.5M
- Grants reported
- 228
- Typical grant
- $10K
- Future commitments
- Not reported
- Total assets
- $43.5M
Future commitments are grants the foundation has reported but not yet paid.
How to apply
This foundation reports on its 990-PF that it only makes contributions to preselected organizations and does not accept unsolicited applications.
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Original filing text
Reported organization name: Muriel F Siebert Foundation Inc
Giving by tax year
Year-level totals across every reported grant in this profile — a summary, not a filter. The awards further down are the largest individual grants across all years, not each year's complete list.
Where Muriel F Siebert Foundation Inc gives
States of grant recipients reported on the foundation's 990-PF filings, by dollars received.
Largest reported grants
Historical awards reported to the IRS. These are examples of past giving, not open opportunities.
| Location | Purpose | |||
|---|---|---|---|---|
| Lewis Clark College | Portland, OR | General Support | Tax year 20252025 | $165K |
| Trustees of Columbia University | New York, NY | Department of Cardiology | Tax year 20252025 | $150K |
| Women's Forum of New York Inc | New York, NY | General Support | Tax year 20252025 | $150K |
| Trustees of Columbia University | New York, NY | General support and scholarship funds | Tax year 20242024 | $112K |
| Lewis & Clark College | Portland, OR | General support | Tax year 20242024 | $100K |
Showing 5 of the 25 largest grants (228 reported in all).
About this data
Figures are aggregated from Muriel F Siebert Foundation Inc's IRS Form 990-PF electronic filings (2 filings on file, most recent tax year 2025). Totals reflect grants the foundation reported as paid, and can lag the current year because foundations file annually and often on extension. Source: IRS 990-PF filing on ProPublica. Raw e-file archive (ZIP) — a large IRS yearly archive download.
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