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IRS 990-PF profile

PROTEUS FOUNDATION

Middleburg, VA · EIN 542013543 · Data as of July 31, 2026

Can an organization apply?

Yes. Its 2025 filing describes how to apply.

No deadline is displayed because this record contains no dated filing text. This is historical filing information.

How to apply, from its own filing

Contact
CELIA W RUTT / 5406623417
Address
C/O YOUNT HYDE BARBOUR PC PO BOX, 2560, WINCHESTER, VA, 22604
Form and process
WRITTEN REQUEST INCLUDING DETAILS OF PURPOSE AND ESTABLISHED NEED.

own 990-PF filing, 2025. Filed text, not a live application channel. Names, addresses and deadlines age quickly; confirm against current first-party guidance before sending anything.

Giving reported · 2025
$520,000
Assets reported
$8,609,702
Median grant
$5,000
Latest filing year
2025

Where its recorded grants went

Recipient location in the quality-gated IRS record.

VA63 award lines
PA23 award lines
MA10 award lines
NM6 award lines
CA3 award lines
CO2 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.

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Grant records from covered filingsIncluded free111 grant recordsSearch every covered organizational grant record by recipient, state, tax year, and amount.Repeat grantees and giving patternsIncluded free25 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.