87 Series A Investors in San Mateo (2026)

87 investors backing series a startups from San Mateo, with stage, check size, and contact routes. Includes Mayfield Fund and Floodgate.

87 Series A investors in our directory list San Mateo as a base of operations. Across the 24 sectors we track in San Mateo, Series A ranks 5th by investor count. San Mateo is one of 12 cities with tracked Series A investors; New York leads with 150. Each profile links to the firm's stage focus, portfolio companies, and source-cited filings.

Other investor sectors in San Mateo (8)

Series A investors in other cities (8)

All Series A investors · All investors in San Mateo · Investor directory