Marvin M Tenberg Charitable Foundation
Historical FunderGreen Cove Springs, Florida · EIN 85-1257333 · Private foundation
Half of its grants to organizations were between $15,000 and $25,000.
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2025):
| Contact | STEPHEN TENBERG |
|---|---|
| Address | 411 WALNUT STREET 18714, GREEN COVE SPRINGS FL 320433443 |
| Phone | 4107537421 |
| stephentenberg@gmail.com | |
| Form and materials | INFORMAL |
| Deadlines | N/A |
| Restrictions | N/A |
Copied as filed. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
40% of grants went outside Florida.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Humane Society of Tampa Bay | Tampa, FL | Works to rescue individual animals, safeguard populations, preserve habitat | $60,000 |
| Baltimore Humane Society | Reisterstown, MD | Works to rescue individual animals, safeguard populations, preserve habitat | $25,000 |
| Straz Performing Arts Foundation | Tampa, FL | Present inspiring performances, provide meaningful arts education and community engagement experiences | $15,000 |
| Susan Terry Foundation | Sarasota, FL | Empowering our communities in the fight against HIV | $15,000 |
| Wikimedia Foundation | San Francisco, CA | Provide knowledge free to the world | $520 |
The return also lists 4 grants to individuals ($52,142). We do not publish the names of individual recipients.
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $167,662 | 9 |
| 2024 | $232,520 | 12 |
| 2023 | $185,000 | 6 |
Sources
- IRS Form 990-PF, tax year 2025, filed Jun 9, 2026 - IRS e-file batch, object ID 202621609349100922
- IRS Tax Exempt Organization Search for EIN 85-1257333
- Profile updated Nov 8, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.