THE HARRY AND MASIE MASTO FOUNDATION

The Harry and Masie Masto Foundation is a private family foundation based in San Francisco that makes grant awards to advance diversity, equity, and justice through grassroots social-change organizations. The foundation’s stated priorities include support for Black-led organizations, Asian communities, Native communities, immigrants, LGBTQ+ people, people with disabilities, and women and girls. The foundation operates as a grantmaking private foundation (files Form 990-PF) and has maintained multi‑million dollar assets with consistent charitable disbursements in the high hundreds of thousands annually in recent years (2022–2024). Its grantmaking includes national and international awards and often flows through intermediaries and fiscal sponsors to reach grassroots groups. The foundation’s leadership team includes an executive director and a small board of trustees; it typically makes directed grants and does not broadly solicit unsolicited proposals, focusing instead on targeted initiatives and partnerships such as the Trust Black Women Initiative and other thematic efforts supporting marginalized communities.