Funding search · EIN 943373712 · Santa Rosa, CA

Riverstyx Foundation

Name: Riverstyx Foundation grants, 2022–2024
Creator: PaperOrbit
License: https://www.irs.gov/charities-non-profits/exempt-organization-public-disclosure-and-availability-requirements

A private foundation (files IRS Form 990-PF). Most private foundations do not take unsolicited applications; the route in is usually a program officer.

132
grants reported: $4.2M
total given: 2022–2024
filing years: $16,150
median grant

Based on grants this organization reported to the IRS for tax years 2022–2024. This is what they filed, not a complete record of their giving, and recent years may be incomplete because filings lag.

What they fund

conference psilocybin psychedelic advocacy coca leaf research study

Funder website ↗Full IRS filings ↗How this is built Report an error

Funding pattern

What this funder pays for, at what size, and how to position adjacent work. Read from their filings, with every number checked against the record.

1 grant matching “fibromyalgia” · $10,000

$10,000
Psilocybin Assisted Therapy Associa · Portland, OR · 2024
Fibromyalgia Study

Top recipients

Repeat recipients are the strongest signal of whether a funder has an open door or quietly re-funds the same organizations.

Indigenous Medicine Conservation Fund2 grants · $452,000
Youth Passageways1 grant · $183,000
Ligare2 grants · $162,000
Heffter Research Institute1 grant · $150,000
Footloose Montana1 grant · $115,000
Clusterbusters2 grants · $102,000
Living With Wolves1 grant · $100,000
Northern Rockies Consevation Cooperative1 grant · $100,000
Wolf Haven International1 grant · $100,000
Discovery House (Zwiski Foundation)1 grant · $100,000

Giving over time

$798,650

2022

$2.2M

2023

$1.2M

2024

Grant history

The 100 largest of 132 grants.

$352,000
Indigenous Medicine Conservation Fund · Santa Rosa, CA · 2023
Donation
$183,000
Youth Passageways · Kansas City, MO · 2024
Lakota Prayer Lodge
$150,000
Heffter Research Institute · Santa Fe, NM · 2022
Donation
$115,000
Footloose Montana · Missoula, MT · 2023
Donation
$100,000
Discovery House (Zwiski Foundation) · Denver, CO · 2023
Donation
$100,000
Living With Wolves · Sun Valley, ID · 2023
Donation
$100,000
Northern Rockies Consevation Cooperative · Jackson, WY · 2023
Donation
$100,000
Wolf Haven International · Tenino, WA · 2023
Donation
$100,000
Indigenous Medicine Conservation Fund · Santa Cruz, CA · 2022
Donation
$82,000
Gaudete Films · 2024
General Support
$82,000
Ligare · Savannah, GA · 2023
Donation
$80,000
Ligare · Savannah, GA · 2024
General Support
$75,000
California Wolf Center · Julian, CA · 2023
Donation
$75,000
Colorado State University · Fort Collins, CO · 2023
Donation
$75,000
Far Away Projects · San Francisco, CA · 2022
Donation
$75,000
North Florida Wildlife Center · Lamont, FL · 2022
Donation
$70,000
Maps · Scotts Valley, CA · 2023
Donation
$65,000
Beloved Builders · North Hampton, MA · 2023
Donation
$52,000
Clusterbusters · Richmond, VA · 2024
Seed Funding Coordinating Research, Education, and Outreach exploring psychedelics for physiological illnesses
$50,000
Indigenous Medicine Conservation Fu · Santa Rosa, CA · 2024
Huachuma Collective - Huachuma/San Pedro Conservation in Peru
$50,000
Indigenous Peyote Conservation Init · Hebbronville, TX · 2024
general support
$50,000
Johns Hopkins University Developmen · Buffalo, NY · 2024
Psilocybin and Alzheimer's Study
$50,000
Netherlands-America Foundation · New York, NY · 2024
Xyrem for Cluster Headache Research
$50,000
Stichting Transnational Institute · 2024
Coca Leaf Advocacy Work in the World Health Organization (100k pledge)
$50,000
Clusterbusters · Richmond, VA · 2023
Donation
$50,000
Endangered Wolf Center · Eureka, MO · 2023
Donation
$50,000
Johns Hopkins University Development · Buffalo, NY · 2023
Donation
$50,000
National Wildlife Federation · Reston, VA · 2023
Donation
$50,000
Predator Defense · Eugene, OR · 2023
Donation
$50,000
Trap Free Montana · Hamilton, MT · 2023
Donation
$50,000
Western Watersheds Project · Hailey, ID · 2023
Donation
$50,000
Wyoming Untrapped · Jackson, WY · 2023
Donation
$50,000
Yellowstone Ecological Research Center · Bozeman, MT · 2023
Donation
$50,000
Chuckanut Health Foundation · Bellingham, WA · 2022
Donation
$50,000
Del E Webb Center for the Performing Arts · Wickenburg, AZ · 2022
Donation
$50,000
Nyu Langone Hospitals · New York, NY · 2022
Donation
$47,000
Dana Farber Cancer Institute · Brookline, MA · 2023
Donation
$40,000
Ecology Action of Santa Cruz · Santa Cruz, CA · 2024
City Bicycle Infrastructure Planning
$40,000
Fireside Project · San Francisco, CA · 2024
General Support
$35,000
Ssdp Students for Sensible Drug Pol · Washington, DC · 2024
Effort to keep DOI/DOC from being scheduled
$35,000
Women Make Movies · New York, NY · 2022
Donation
$34,678
Other Honorariums · Nka, CA · 2024
research support
$30,000
Healing Advocacy Fund · Portland, OR · 2024
Oregon and Colorado Psilocybin Implementation
$30,000
International Dark Sky Association · Tucson, AZ · 2022
Donation
$26,000
Maps · Scotts Valley, CA · 2024
General Support
$25,050
Tto - Tiognaka Tawowakan Otokahe · Rapid City, SD · 2022
Donation
$25,000
Alma Institute · Portland, OR · 2024
Communities of Color Psilocybin Service Center Development in OR
$25,000
Resolution Washington · Olympia, WA · 2024
WA Statewide Mediation Advocacy
$25,000
Advocates for the West · Boise, ID · 2023
Donation
$25,000
Idaho Conservation League · Boise, ID · 2023
Donation
$25,000
Lighthawk Conservation Aviation · Denver, CO · 2023
Donation
$25,000
People and Carnivores · Bozeman, MT · 2023
Donation
$25,000
Pilots To Rescue · Brooklyn, NY · 2023
Donation
$25,000
Rangeland Wild · Indian Hills, CO · 2023
Donation
$25,000
The International Wildlife Coexistence Network · Garden City, ID · 2023
Donation
$25,000
Washington Innocence Project · Seattle, WA · 2023
Donation
$25,000
Wolves of the Rockies · Stevensville, MT · 2023
Donation
$25,000
Beloved Builders · North Hampton, MA · 2022
Donation
$25,000
Giving Back Fund · Los Angeles, CA · 2022
Donation
$23,480
Bendable Therapy · Bend, OR · 2024
Environmental Activist Psilocybin Retreat (EARTH)
$21,500
Uc Berkeley Center for Psychedelics · Berkeley, CA · 2024
Riverstyx Foundation BIPOC Diversity Scholarship
$20,000
International Dark Sky Association · Tuscon, AZ · 2024
Protecting Dark Night Skies from Light Pollution
$20,000
Erowid Center · Grass Valley, CA · 2023
Donation
$20,000
Healing Advocacy Fund · Portland, OR · 2023
Donation
$20,000
Occidental Arts & Ecology Center · Occidental, CA · 2022
Donation
$17,300
Innovate Health · Buffalo, NY · 2024
Psilocybin Pilot Program for Environmental Scientists
$15,000
McKenna Academy of Natural Philosop · San Rafael, CA · 2024
2025 Coca Leaf Conference
$15,000
Nyu Langone · New York, NY · 2024
Therapist funding support for the psilocybin advanced cancer study funded by NCI
$15,000
Occidental Arts and Ecology Center · Occidental, CA · 2024
Water Sustainability Design
$15,000
International Dark Sky Association · Tucson, AZ · 2023
Donation
$15,000
Wings Program · Corvallis, MT · 2022
Donation
$14,000
Usona Institute · Madison, WI · 2024
Legal Work Challenging Egregious Ayahuasca Patents
$13,000
Chaikuni Institute · 2024
Supporting Indigenous Shipibo people in protection of the Peruvian Amazon
$12,840
Tto - Tiognaka Tawowakan Otokahe · Rapid City, SD · 2023
Donation
$12,500
Healing Breakthrough · San Rafael, CA · 2024
Veterans Advocacy
$12,500
Psychedelic Science Funders Collabo · San Francisco, CA · 2024
General Support
$11,750
Alma Institute · Portland, OR · 2023
Donation
$11,000
San Francisco Zen Center · New York, NY · 2024
Zen Firefighter Retreat
$10,000
Horizon Center Pbc · New York, NY · 2024
Psychedelic Conference NY
$10,000
Indigenous Medicine Conservation Fu · Santa Rosa, CA · 2024
Indigenous Community Assessment - Coca Leaf
$10,000
Lsu Health Sciences Center · New Orleans, LA · 2024
General Support
$10,000
Pamaorama Global · Seattle, WA · 2024
Psychedelic Health Equity Initiative
$10,000
Psilocybin Assisted Therapy Associa · Portland, OR · 2024
Fibromyalgia Study
$10,000
Shefa Jewish Psychedelic Support · Berkely, CA · 2024
Portia Sofia
$10,000
Indigenous Peyote Conservation Initiative · Hebbronville, TX · 2023
Donation
$10,000
Psychedelic Science Founders Collaborative · San Francisco, CA · 2023
Donation
$10,000
Skagit Animals in Need · Mount Vernon, WA · 2023
Donation
$10,000
Urban Indigeneous Collective · New York, NY · 2023
Donation
$10,000
Whatcom Humane Society · Bellingham, WA · 2023
Donation
$10,000
Wings Program · Corvallis, MT · 2023
Donation
$10,000
Center of Addiction & Faith · St Bonifacius, MN · 2022
Donation
$10,000
Common Counsel · Oakland, CA · 2022
Donation
$10,000
Direct Relief · Santa Barbara, CA · 2022
Donation
$10,000
Humane Society of Wickenburg · Wickenburg, AZ · 2022
Donation
$10,000
Social Good Fund · Naperville, IL · 2022
Donation
$7,500
Women'S Visionary Council · Berkeley, CA · 2024
Women's Psychedelic Conference
$6,500
The Church of Sacred Mirrors Cosm · Wappinger, NY · 2023
Donation
$6,000
Prision University Project · San Rafael, CA · 2024
San Quentin Prison Education
$6,000
Botanical Dimension · Occidental, CA · 2023
Donation
$6,000
Prision University Project · San Rafel, CA · 2023
Donation

View all 132 grants →

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Similar grant size

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Grants already paid are the record; PaperOrbit reads your paper and finds the funders whose record matches it — then explains why.

Search funders like this one

Source: IRS Form 990-PF, Part XV, as filed by the foundation. These are grants already paid — a record of what this funder backs, not an open call.