Marin Sonoma Impact Ventures

The firm writes pre-seed and seed-stage checks, often serving as the first institutional capital into a company. Its strategy revolves around high-conviction, early-entry positions where the firm can influence company-building fundamentals before a Series A institutional round.

The firm does not maintain a publicly accessible portfolio directory as of the latest available information. Detailed investment records — including named portfolio companies, check sizes, and co-investor syndicates — are not broadly distributed through the firm's website or public filings.

Its differentiation is purely geographic. The firm operates in Corte Madera, deliberately distanced from Sand Hill Road, and targets North Bay founders who often have exited larger Silicon Valley companies but no longer wish to build their next venture inside the Peninsula's fundraising ecosystem. The thesis is fundamentally a talent-and-valuation arbitrage on geography.