Mark Murphy

Mark Murphy is a General Partner at Banner Capital based in San Francisco, California, where he manages the S19 Fund. Before launching his current firm, he served as a Principal at Initialized Capital and held various operational roles across the technology sector. Murphy currently oversees approximately $50 million in assets under management, recently closing the $30 million S19 Fund II in June 2025 to back early-stage ventures. The Stanford University computer science graduate has built a portfolio of over twenty companies, frequently co-investing alongside prominent industry figures like Sam Altman and Elad Gil. He recently led a seed investment in the artificial intelligence startup CodeForge and presented on developer tools at major industry conferences. Murphy maintains a primary investment focus on pre-seed and seed-stage startups operating within the artificial intelligence, developer tools, and fintech sectors.