Riverstyx Foundation
Kirkland, Washington · EIN 943373712 · Private foundation
Riverstyx Foundation is a private foundation based in Kirkland, Washington. Its most recent IRS Form 990-PF reports $1.8M in grants paid and $28.4M in total assets. Bespoke Grants tracks 321 individual grants from this funder — $10.2M awarded across 2017–2024 — including its support for civil rights & social justice. Below is its full funding profile.
What Riverstyx Foundation funds
Riverstyx Foundation's giving carries a documented focus on civil rights & social justice, criminal justice, education, environment & conservation, health care, and related causes.
Populations it has supported include indigenous, veterans, women girls, youth pop.
Grant history
The largest grants Bespoke Grants has on record for Riverstyx Foundation, by amount:
| Recipient | Location | Grant | Year |
|---|---|---|---|
| Maps DONATION | Santa Cruz, CA | $668K | 2019 |
| Heffter Research Institute DONATION | Santa Fe, NM | $362K | 2020 |
| Indigenous Medicine Conservation Fund DONATION | Santa Rosa, CA | $352K | 2023 |
| Multidisciplinary Association for Psychedelic Studies (maps) DONATION | Scotts Valley, CA | $221K | 2017 |
| Heffter Research Institute DONATION | Santa Fe, NM | $215K | 2017 |
| Youth Passageways Lakota Prayer Lodge | Kansas City, MO | $183K | 2024 |
| Native American Rights Fund DONATION | Boulder, CO | $177K | 2019 |
| Heffter Research Institute DONATION | Santa Fe, NM | $150K | 2022 |
| Wolf Haven International DONATION | Tenino, WA | $150K | 2020 |
| Washington Innocence Project DONATION | Seattle, WA | $150K | 2020 |
| California Wolf Center DONATION | Julian, CA | $128K | 2020 |
| Standearth DONATION | San Francisco, CA | $120K | 2019 |
| Footloose Montana DONATION | Missoula, MT | $115K | 2023 |
| Compass Health DONATION | Everett, WA | $110K | 2020 |
| Native American Rights Fund DONATION | Boulder, CO | $100K | 2020 |
Riverstyx Foundation giving by year
Total grants Bespoke Grants has indexed for each filing year:
How to apply for funding from Riverstyx Foundation
Riverstyx Foundation's public IRS filing does not spell out a formal application process. Foundations of this size often give primarily to organizations they already know, so a concise letter of inquiry or a warm introduction is usually the best first contact — not a full proposal. You can review the foundation directly at riverstyxfoundation.org.
Is Riverstyx Foundation the right funder for your nonprofit?
This page shows what Riverstyx Foundation has funded. Bespoke Grants tells you whether it fits your mission — and finds every other foundation that does. Free, no credit card.
Match my nonprofit to funders →Frequently asked questions about Riverstyx Foundation
- Does Riverstyx Foundation accept grant applications?
- Riverstyx Foundation's public filing does not specify an application process. A brief letter of inquiry or a warm introduction is usually the best first step with a private foundation of this size.
- What does Riverstyx Foundation fund?
- Riverstyx Foundation's grants focus on civil rights & social justice. Recent recipients include Maps, Heffter Research Institute, Indigenous Medicine Conservation Fund. Its full grant history is listed above.
- How much does Riverstyx Foundation give in grants?
- Riverstyx Foundation reported $1.8M in grants in its most recent IRS filing (FY2020). Across all years in our data it has awarded $10.2M over 321 grants.
- Where is Riverstyx Foundation located?
- Riverstyx Foundation is based in Kirkland, Washington. Its IRS employer identification number (EIN) is 943373712.
- How can I find foundations similar to Riverstyx Foundation?
- Bespoke Grants matches your nonprofit against 225,000+ foundations like Riverstyx Foundation, ranking each by how well it fits your mission, location, and budget — with the reasoning shown. It is free to search.
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