18 West Capital Partners

18 West Capital Partners is a venture capital firm founded in 2023 and headquartered in San Francisco, with a presence in Seattle. The firm was co-founded by Adam Klotz, who brings a background in healthcare and holds an MBA from Stanford Graduate School of Business, and Zachary Greenberg. It focuses on early and growth-stage technology companies across healthcare, energy, infrastructure, financial services, and cybersecurity. The firm has invested in companies operating in network management software, systems, and information management, with a particular lean toward emerging and deep tech. Known portfolio investments include Crusoe (AI-native cloud infrastructure), evolutionQ (quantum-safe cybersecurity), and Lastwall (identity security), the latter most recently raising a $16M Series A in May 2026.