Who funds Glenbrook Underground INC?

Glenbrook Underground INC has received $4.1 million across 32 grants from 20 funders over IRS Form 990 filings (2022–2025). Its largest funder is Vanguard Charitable Endowment Program.

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Funding sources

What is Glenbrook Underground INC's largest source of grant funding?

Vanguard Charitable Endowment Program has given $789K across 3 grants to Glenbrook Underground INC.

Who is Glenbrook Underground INC's second-largest funder?

The Parasol Tahoe Community Foundation has given $650K across 3 grants to Glenbrook Underground INC.

Who else funds Glenbrook Underground INC?

National Philanthropic Trust has given $575K across 1 grant to Glenbrook Underground INC.

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All figures are sourced from grants itemized on nonprofit 990 filings, representing reported charitable giving. These are public records filed with the IRS.