The Halicioglu Family Foundation

Sempra Foundation

San Diego, CA

The Sempra Foundation funds climate action and resilience, inclusion, economic empowerment and workforce development, community engagement, and disaster preparedness in communities where Sempra employees live and work, including California, Texas, Washington, D.C., and Mexico. In 2024, grants ranged from $4 to $100,000, with a median of $260. It awards grants by invitation only and does not accept unsolicited requests.

Schoenith Foundation

Dallas, TX

Illumina Corporate Foundation

Wilmington, DE

The Illumina Corporate Foundation funds access to genomics, STEM education—especially for underrepresented learners—and community impact, with a global emphasis and priority for U.S. communities where Illumina employees live and work. In 2025, grants ranged from $2,500 to $881,989, with a median of $10,000. It accepts applications on a rolling basis and does not limit giving to preselected organizations.

The Parker Foundation

Carlsbad, CA

The Parker Foundation supports social, arts, community, and educational organizations serving San Diego County. Its 2024 grants ranged from $1,000 to $90,000, with a median of $25,000. It accepts unsolicited requests.

Price Philanthropies Foundation

La Jolla, CA

Price Philanthropies Foundation funds opportunities for underserved youth and families, including early education, childcare, youth and family mental health, and community organizations, with additional support for PriceSmart communities in Latin America and the Caribbean. Its giving is primarily focused on San Diego, especially City Heights; 2024 grants ranged from $1,000 to $19.1 million, with a median of $22,410. It does not accept unsolicited requests; formal applications are by invitation after an initial inquiry and screening.

The Northrop Grumman Foundation

Falls Church, VA

The Northrop Grumman Foundation funds STEM education and workforce development, as well as national disaster response, supporting 501(c)(3) organizations across the United States. Its 2024 grants ranged from $50 to $1 million, with a median of $500; it makes charitable grants by invitation only and does not accept unsolicited requests.

Silicon Valley Community Foundation

Mountain View, CA

Silicon Valley Community Foundation funds work in areas such as housing, economic security, education, health, the environment, arts and culture, and civic engagement, with Community Action Grants supporting local, community-led organizations in San Mateo and Santa Clara counties. Its 2024 grants had a median of $51,716, though amounts varied widely; applications depend on the program, and SVCF states that it does not accept unsolicited proposals for advised funds.

Otter Cares Foundation

Fort Collins, CO

Otter Cares supports K–12 entrepreneurship and philanthropy education, youth programs, and hands-on learning spaces, primarily in Colorado’s Larimer and Weld counties, with some support reaching Northern Colorado and beyond. Its program grants typically range from $1,000 to $25,000; across all 2024 grants, the median award was $275. The profile does not state whether it accepts unsolicited requests.

California Community Foundation

Los Angeles, CA

The California Community Foundation funds work in education, health, housing, immigration, and other community needs, primarily in Los Angeles County. Its 2025 grants had a median of $50,000, though amounts varied widely; it does not accept unsolicited funding requests.

Tides Foundation

San Francisco, CA

Tides Foundation funds community-led organizations advancing equity and justice, including work on health, climate, gender equity, democracy, and immigrant communities. Its 2024 grants had a median of $50,000, though amounts varied widely, and it funds eligible organizations in the U.S. and abroad, with the most grant dollars going to California, New York, and Washington, D.C. Some programs are open or invitation-only; the Advancing Girls Fund is listed as open, but the profile does not state a general policy on unsolicited grant requests.

The William & Flora Hewlett Foundation

Menlo Park, CA

The William & Flora Hewlett Foundation funds education, climate and conservation, the arts, gender equity, governance, democracy, and philanthropy, with work in the San Francisco Bay Area, the U.S. West, nationally, and internationally. Its 2024 grants had a median of $150,000, though awards ranged from $50 to more than $11 million; it often provides long-term general operating support. It generally does not accept unsolicited requests, except through invited open processes.

Marin Community Foundation

Novato, CA

Marin Community Foundation funds equity-focused work, including affordable housing, homelessness, community resilience and power, and arts; its Buck Family Fund supports organizations serving Marin County, including those based elsewhere. Its 2025 grants had a median of $25,000 and ranged from $5,050 to $10 million; the profile does not state whether it accepts unsolicited requests.