The Millstream Fund
At a glance
This funder does not accept unsolicited applications. The foundation chooses the organisations it funds itself.
Key takeaways
- The Millstream Fund makes contributions only to organisations it has preselected and does not accept unsolicited requests, so an unsolicited application is unlikely to be considered.
- Its latest filing shows that 97% of grant dollars to organisations went to groups it had also funded in an earlier filing, so an approach most likely works through an existing relationship or an invitation.
- No geographic focus is stated, and the filings show grants mainly in New York, District of Columbia and New Mexico, though that describes past giving rather than a rule about who may apply.
- About 8 in 10 of its grants to organisations fall between $5,000 and $100,000, with a median of $25,000, though its largest grant was $350,000.
- The recorded grants span reproductive health, public health, the arts, public media, conservation and civil liberties, so checking that your work fits one of those areas is worthwhile.
Overview
The Millstream Fund is a US private foundation based in Tysons, VA.
What they fund
Profile based on the foundation's IRS Form 990-PF filings (TY2024, TY2023, TY2022) only: no website or other web source for the foundation was found. Every statement is checked against the filings. Sources read on 7 October 2026.
Priority Areas
The filings do not provide a stated funding brief; their grant record is dominated by general support. Across the recipients, the giving reaches organisations working in reproductive health and rights, public health and population research, dance and other arts, public media, conservation, and civil liberties. A smaller set of recorded purposes includes fair voting rights, food distribution and environmental litigation. Recipients include both locally focused and national organisations, and the recorded grants support a mix of service, cultural, conservation and public-interest work. These are patterns in recorded grants, rather than eligibility rules stated by the foundation.
Geographic Focus
No geographic focus is stated; the filings show grants mainly in New York, District of Columbia and New Mexico.
How to apply
The foundation makes contributions only to preselected charitable organisations and does not accept unsolicited requests.
Application success factors
- Repeat giving: In its TY2024 filing, 97% of its grant dollars to organisations went to organisations it had also funded in its TY2022 or TY2023 filing.
- Grant size: Across its TY2022, TY2023 and TY2024 filings, half of its 122 grants to organisations were $25,000 or less.
Where grants go
From grants to organisations in the foundation’s filings for tax years 2022–2024.
Grant dollars by state
6 other states: 9%
- The largest single recipient received 15% of grant dollars to organisations.
- In tax year 2024, 97% of grant dollars went to organisations The Millstream Fund had funded in earlier filings.
- No grants were paid directly to organisations outside the US.
- 10% of grant dollars went to intermediaries that regrant to other organisations.
Grants
How much do they typically give?
Share of 43 grants in tax year 2024 by size
Median $25,000 (tax year 2024)
The largest grants to organisations in the foundation’s latest filing:
- Trust for America's Health · General support$333,3342024 tax year
- Planned Parenthood Federation of America · General support$250,0002024 tax year
- Rockefeller Family Fund · General support$125,0002024 tax year
- Washington Bach Consort · General support General support$100,0002024 tax year
- National Dance Institute - New York · General support$100,0002024 tax year
- New York Community Trust · Food distribution program$100,0002024 tax year
- American Civil Liberties Union National Headquarters · Support for the fight for fair voting rights$100,0002024 tax year
- Planned Parenthood of New York City · General support$100,0002024 tax year
Grants to organisations listed in the foundation’s Form 990-PF filings. Grants to individuals are not shown.
Officers and directors
- Phoebe Jane Winthrop — Secretary
- Hope Aldrich — President
From the latest Form 990-PF filing
3 years of tax filings
| Year | Total expenses | Grants paid | Assets | Filing document |
|---|---|---|---|---|
| 2022 tax year | $2,397,139 | $2,183,666 | $22,640,315 | Filing for 2022 tax year |
| 2023 tax year | $2,644,747 | $2,453,668 | $30,810,719 | Filing for 2023 tax year |
| 2024 tax year | $2,321,404 | $2,100,334 | $35,936,708 | Filing for 2024 tax year |
Figures from the foundation’s IRS Form 990-PF filings. Assets are at fair market value at year end. The document icon links to each year’s filing on ProPublica Nonprofit Explorer.
Sources
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At a glance
Applying to The Millstream Fund?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- Tysons, VA
Applying to The Millstream Fund?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- Tysons, VA