Sergey Brin

Google co-founder Sergey Brin is among the wealthiest people in the world and returned to active Alphabet involvement to help lead the Gemini AI development team after years focused on personal projects. Brin co-created the PageRank algorithm that made Google search revolutionary, enabling the company to grow from a Stanford research project into one of the world's most profitable advertising businesses, generating hundreds of billions of dollars in annual revenue. He also funded Calico, Alphabet's longevity research subsidiary targeting diseases of aging, and has invested personally in lighter-than-air aviation through the airship company LTA Research.