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IRS 990-PF profile

MARMOT FOUNDATION

Rehoboth Bch, DE · EIN 516022487 · Data as of July 31, 2026

Can an organization apply?

Not through an open application. Its 2024 filing says it funds preselected organizations.

Application timing as written in that filing: “SUBMIT PROPOSALS PREFERABLY IN APRIL AND OCTOBER. DETERMINATIONS MADE IN MAY AND NOVEMBER.” This is historical filing information.

How to apply, from its own filing

Contact
WILLIS H DUPONT / 2022552600
Address
PO BOX 323, REHOBOTH BEACH, DE, 19971
Form and process
NO FORMAL APPLICATION REQUIRED.
Restrictions
NO SUPPORT FOR INDIVIDUALS, SCHOLARSHIPS OR LOANS.

own 990-PF filing, 2024. Filed text, not a live application channel. Names, addresses and deadlines age quickly; confirm against current first-party guidance before sending anything.

Giving reported · 2024
$2,750,000
Assets reported
$21,182,193
Median grant
$25,000
Latest filing year
2024

Where its recorded grants went

Recipient location in the quality-gated IRS record.

FL99 award lines
ID27 award lines
DE25 award lines
PA9 award lines
NY4 award lines
MN4 award lines

Large examples from the latest covered year

A small sample of the largest organizational grants in the latest covered filing year.

Up to three largest organizational grant examples in the latest covered tax year, with one example per normalized recipient. Named people are omitted. Open the grant records to read each grant’s purpose as written on the filing.

Explore this foundation more deeply

Open a dedicated research view to search, filter, and move through the quality-gated records.

Grant records from covered filingsIncluded free173 grant recordsSearch every covered organizational grant record by recipient, state, tax year, and amount.Repeat grantees and giving patternsIncluded free43 repeat granteesFind recipients appearing across multiple covered filing years.Foundation grantees with federal award recordsProResearch registry-corroborated organizations that appear in both this foundation’s records and USAspending.Leadership listed in public filingsProPublic filing context for governance research

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What this data is, and what it is not
  • Source: IRS 990-PF filings, grant schedules, and Business Master File identity data.
  • Privacy: Grant recipients that read as named individuals are withheld unless the IRS Business Master File corroborates an organization of that name in that state. Withheld lines are absent from every count and total on this page..
  • Interpretation: Historical grants do not establish current mission, eligibility, application status, or likelihood of future funding.

An award-line count is the number of individual grant lines reported across covered IRS filings, before the grant search groups lines that share the same recipient, amount, and tax year into a single displayed record.