John is a founding Corstone partner and has served alternatively as managing director or as CEO of Corstone portfolio companies over the past 30 years. His career spans military service to public company executive positions. He is experienced with venture, private equity and public market financings and successfully led businesses to M&A transactions and public listings.
John currently serves as Executive Chairman of NARF Industries, PLC, a London Stock Exchange listed company specializing in advanced cybersecurity research for agencies including DARPA and DHS with particular focus on Critical Infrastructure Protection. John was a founder of the predecessor company, CYBA PLC, in November 2018, that was formed to acquire leading cybersecurity companies pursuing advanced research projects with significant commercialization opportunities.
John served as an officer in the Navy nuclear submarine program on the staff of Adm. Hyman G. Rickover and received his MBA in Finance and Investments from George Washington University and his BS in Business from The Citadel.