Sergey Brin Gifts $1.1 Billion in Alphabet Stock After AI Rally

Sergey Brin gave away more than $1.1 billion worth of Alphabet Inc. stock this week, with most of the money going to a nonprofit the Google co-founder created.

The donation was disclosed Friday in a regulatory filing, which didn’t specify who had received the more than 3.5 million shares. According to a spokesperson for Brin’s family office, roughly $1 billion in stock is going to Catalyst4, which the billionaire started in 2021 with the dual purpose of supporting research into central nervous system diseases and climate-change solutions.