Jack Altman

Jack Altman is the co-founder and former CEO of Lattice, the people-management software company, and is the brother of OpenAI CEO Sam Altman. He invests as an angel and as a general partner of Alt Capital, his early-stage fund. Altman concentrates on founders building AI applications, vertical software, and consumer products, often writing first cheques alongside top-tier seed firms. He participated in ROGO's $160M Series D, the financial-research AI platform, alongside other operator-investors.