funder-graph › Recipients
Who funds Society for the Protection of Underground Networks
EIN 87-4391116 · Dover, DE · NTEE U50
Society for the Protection of Underground Networks of Dover, DE (EIN 87-4391116) was named as a grant recipient by 7 funders in 8 grants paid totaling $5,991,879 in tax years 2024–2025, as reported on the funders' Forms 990-PF and 990 Schedule I. Each edge was resolved to this EIN at the match tier shown. Dataset version 2026.09.0, built 2026-09-03.
Grants received
$5,991,879
8 grants paid
Funders
7
distinct grantmakers
Tax years
2024–2025
as reported by funders
Approved for future payment
$650,000
not included in grants received
Funders
| Funder | State | Match | Grants | Total paid | Latest year |
|---|---|---|---|---|---|
| Sustainable Markets Foundation 13-4188834 | NY | A | 2 | $4,391,879 | 2025 |
| The Jeremy and Hannelore Grantham Environmental Trust 20-3959397 | MA | A | 1 | $1,000,000 | 2024 |
| Rivian Foundation 87-3878063 | CA | B | 2 | $300,000 | 2025 |
| Novo Foundation 47-0824753 | NY | B | 1 | $150,000 | 2024 |
| Greater Washington Community Foundation 23-7343119 | DC | A | 1 | $100,000 | 2025 |
| Mighty Arrow Family Foundation 46-1557560 | CO | B | 1 | $50,000 | 2024 |
Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.
Grants
The 10 most recent grants naming this organization.
| Tax year | Funder | Recipient | Match | Amount | Type | Purpose | Source filing |
|---|---|---|---|---|---|---|---|
| 2025 | Sustainable Markets Foundation | Soc Prot Underground Ntwks Chicago, IL | A | $1,024,379 | paid | Environmental Conservation | 202611969349302621 |
| 2025 | Rivian Foundation | Society for the Protection of Underground Networks Dover, DE | B | $150,000 | paid | TO SUPPORT THE STUDY OF FUNGI IN US DESERTS AND ALASKA TO IMPROVE CONSERVATION AND BOOST SOIL HEALTH | 202630939349100828 |
| 2025 | Greater Washington Community Foundation | Society for the Protection of Underground Networks (spun) Dover, DE | A | $100,000 | paid | GENERAL SUPPORT | 202640449349302259 |
| 2024 | Sustainable Markets Foundation | Spun Dover, DE | A | $3,367,500 | paid | ENVIRONMENTAL CONSERVATION | 202521969349303202 |
| 2024 | The Jeremy and Hannelore Grantham Environmental Trust | Society for the Protection of Underground Networks Dover, DE | A | $1,000,000 | paid | GRANTS TO PROTECT THE ENVIRONMENT | 202543219349322204 |
| 2024 | The Schmidt Family Foundation | Society for the Protection of Underground Networks Dover, DE | B | $500,000 | approved, future | CAPACITY BUILDING | 202513219349104316 |
| 2024 | Rivian Foundation | Society for the Protection of Underground Networks Dover, DE | B | $150,000 | paid | TO SUPPORT THE STUDY OF FUNGI IN US DESERTS AND ALASKA TO IMPROVE CONSERVATION AND BOOST SOIL HEALTH | 202521359349105232 |
| 2024 | Rivian Foundation | Society for the Protection of Underground Networks Dover, DE | B | $150,000 | approved, future | TO SUPPORT THE STUDY OF FUNGI IN US DESERTS AND ALASKA TO IMPROVE CONSERVATION AND BOOST SOIL HEALTH | 202521359349105232 |
| 2024 | Novo Foundation | Society for the Protection of Underground Networks Dover, DE | B | $150,000 | paid | GENERAL SUPPORT | 202533009349100313 |
| 2024 | Mighty Arrow Family Foundation | Society for the Protection of Underground Networks Dover, DE | B | $50,000 | paid | GENERAL SUPPORT | 202543219349102379 |
Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.
Recipient matching for this dataset version has not yet completed its independent precision check. Tier A rows carry the EIN the filer reported; tiers B–D are inferred and should be read as leads until the check is published on the methodology page.
Derived from IRS Form 990-PF and Form 990 Schedule I e-file XML filed by the funders shown; this organization's identity from the IRS Exempt Organizations Business Master File. Dataset version 2026.09.0, built 2026-09-03. The rows as Parquet: manifest.
The same organization elsewhere in the program: exempt status and filing health · federal awards · grant guidance · open opportunities.
This is informational only, derived from public data on the dates shown. It is not an eligibility determination, and not legal, tax, or accounting advice. Verify against the official source before relying on it.