Sansome Partners (Fisher Family Office) is a family office - single based in San Francisco, CA, United States, founded in 1997. Verified contact details, AUM data, and investment preferences on FindLPs.
Sansome Partners makes long-term investments in high-quality businesses and assets
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LP firm data compiled from public regulatory filings (SEC Form ADV, FCA, AIFMD disclosures), company websites and press releases, LinkedIn public profiles, and verified outbound email testing. AUM figures reflect self-reported values from filings and may lag by 1–2 fiscal quarters; bands are normalized in USD. We do not publish personal residential information; firms or individuals may request removal at /contact. Methodology & sources · Updated July 2026.