Ex/ante

Ex/ante

Ex/ante launched in 2021, founded by Zoe Weinberg after stints at the World Bank, Google AI, and the International Finance Corporation. The firm's name — a Latin phrase for "before the event" — signals its thesis: the best time to shape a technology's regulatory and ethical architecture is before it scales. Weinberg built a team of operators with backgrounds spanning national security, AI research, and venture investing. The firm targets pre-seed and seed-stage companies at the intersection of technology and public interest. Its strategy concentrates on sectors where regulatory frameworks are still forming, creating opportunities for startups that design compliance and safety into their core product. The firm has led rounds in companies building privacy infrastructure, AI governance tools, and dual-use defense software. Geographic focus is US-headquartered companies with global regulatory exposure, particularly those operating across transatlantic data regimes. Ex/ante operates with a compact investment team and a network of technical and policy fellows who support portfolio companies on regulatory strategy and go-to-market positioning. The firm raised its first fund in 2021 and has since backed more than a dozen early-stage companies, though total fund size remains undisclosed. The portfolio includes ventures in AI model evaluation, encrypted computation, and digital identity frameworks. The firm maintains close ties with academic labs at Stanford and MIT that produce much of its deal flow. Unlike many seed firms, Ex/ante explicitly integrates policy analysis into its investment process, maintaining an in-house capability to model regulatory scenarios before committing capital. This structure allows the firm to underwrite regulatory risk as a potential competitive advantage rather than a liability — a posture that distinguishes it from the majority of early-stage generalist funds.