J4 Ventures

J4 Ventures is an early-stage technology venture capital firm that invests in exceptional entrepreneurs addressing large markets with technology-driven or technology-enabled businesses. The firm focuses on four core verticals — Finance, Workplace, Climate, and AI — and brings together three decades of venture experience, 25 years in Big Tech, 50 years in academia, and involvement in over 500 prior investments to provide founders with unparalleled expertise and network access. J4 Ventures operates with a stated commitment to humility and integrity, prioritizing deep trust and genuine collaboration with founders. The firm backs scalable businesses at the pre-seed and seed stages in the US, deploying checks of $500K–$1M, and seeks to be a hands-on partner that reflects the team's own decades of operating and investing experience.