David and Melinda Gladstone Foundation

The New-Land Foundation Inc

San Francisco, CA

The New-Land Foundation supports peace and arms control, including nuclear issues, as well as environmental work such as wildlife and land conservation and environmental law. In 2024, it made 92 grants ranging from $5,000 to $100,000, with a median award of $20,000; grants went to organizations in several states, led by Colorado and the District of Columbia. The profile does not state whether it accepts unsolicited requests.

Winslow Foundation

Wilmington, DE

The Wilmington, Delaware-based Winslow Foundation funds climate and environmental work, health initiatives, and civic education, with 2024 grants concentrated in Maryland, Massachusetts, Washington, D.C., California, and North Carolina. Its 57 grants ranged from $500 to $250,000, with a median of $20,000. It does not accept unsolicited requests and gives only to preselected organizations.

Colorado Gives Foundation

Arvada, CO

Colorado Gives Foundation funds nonprofits serving Jefferson County, Colorado, with priorities including essential needs, housing, food security, education, workforce development, health, and connected neighborhoods. Its 2024 median grant was $17,814; current opportunities offer $2,500–$100,000 for responsive support and $5,000–$25,000 for housing. The profile does not state whether it accepts unsolicited requests.

Our Part

Aventura, FL

Our Part funds work to address climate change and protect democracy, including clean energy, carbon farming, voter engagement, and financial advocacy. Its reported giving has varied widely, from $10,000 in 2024 to $939,205 in 2022; no geographic focus is stated. It gives only to preselected charitable organizations and does not accept unsolicited requests.

Resources Legacy Fund

Sacramento, CA

Resources Legacy Fund supports conservation and restoration of important lands and waters, climate resilience, and community-based environmental work, including environmental justice and public health. Its 2024 grants ranged from $5,819 to $1.4 million, with a median of $60,000; its work is rooted in California and extends across Western North America and beyond. It does not accept unsolicited requests, though it welcomes conversations with potential partners whose work aligns with its programs.

Wiancko Charitable Foundation Inc

Seattle, WA

Wiancko Charitable Foundation supports preselected organizations working on environmental conservation, climate and clean energy, as well as reproductive health. Its 2024 grants ranged from $5,000 to $260,000, with a median of $35,000, and primarily went to organizations in Washington, Oregon, and Washington, DC. It does not accept unsolicited requests.

Carroll Petrie Foundation

Santa Fe, NM

The Carroll Petrie Foundation funds animal welfare and humane treatment, wildlife protection, habitat conservation, and related environmental work, with a focus on New Mexico and the Southwest. Its 2024 grants ranged from $2,000 to $3,862,500, with a median of $50,000. It funds preselected organizations by invitation only and does not accept unsolicited requests.

The Arthur & Patricia Price Foundation

Encino, CA

The Arthur & Patricia Price Foundation supports emergency relief, food assistance, health, social services, and the arts, with most 2025 grant dollars going to California organizations. Grants ranged from $250 to $92,000, with a median of $1,000. It gives only to preselected organizations and does not accept unsolicited funding requests.

Jean and Albert Nerken Foundation

New York, NY

Deer Creek Foundation

St. Louis, MO

The foundation funds legal and policy advocacy, environmental protection, constitutional education, nuclear oversight, voting systems, and local education. Its 2024 grants ranged from $2,000 to $1 million, with a median of $100,000; funding went mainly to Missouri, California, and Washington, D.C., with additional grants elsewhere. It uses a letter-of-inquiry process, but the filing does not say whether it accepts unsolicited requests.

Seattle Foundation

Seattle, WA

Seattle Foundation funds community-led work advancing racial and economic equity in Greater Seattle, including housing, economic opportunity, climate justice, democracy, arts, and organizing; some programs support specific medical or performing-arts needs. Its 2024 grants ranged from $60 to $7 million, with a median of $6,000. It accepts unsolicited requests through program-specific applications or letters of inquiry.

Gates Foundation

Seattle, WA

The Gates Foundation funds work on global health, poverty reduction, gender equality, economic opportunity, and U.S. education, primarily in low-income countries and the United States. Its 2024 grants had a median of $500,000, though amounts varied widely. It generally does not accept unsolicited requests; organizations are usually invited to apply, with occasional published funding opportunities.