Keith Hamlin is the Co-Founder and Managing Partner of Third Prime. See sector focus and contact routes.
Keith Hamlin is the Co-Founder and Managing Partner of Third Prime, an early-stage venture capital firm he launched in New York City in 2016 after careers as an M&A lawyer at Skadden Arps and in private equity and real estate development. He directs seed-stage capital primarily into financial technology, property technology, cryptocurrency, enterprise software, consumer technology, and healthcare, focusing on disruptive innovations in the United States. Third Prime’s historical average check size is approximately $604,300, and the firm typically invests in early-stage B2B and financial services companies. Notable portfolio companies where Hamlin serves as a director include All Inspire Health, Inc. and Kafene, Inc., reflecting his involvement in health and hospitality-tech ventures. While specific lead versus follow behavior is not publicly detailed, Hamlin emphasizes backing founders with the vision and operational capability to drive positive change. No distinctive public writing or unique point of view beyond his general investment philosophy has been documented in available sources.
Every field above is read from the StartupFundraising investor directory — disclosed location, recorded investments and stated focus — and re-checked as filings arrive. Founders pair it with investors in New York when building a target list.
Investors like Keith Hamlin · Full investor directory · Investor access · Company funding database