Brin, 52, is the world’s fourth richest person, with a $255.5 billion fortune, according to the Bloomberg Billionaires Index. His net worth has soared this year thanks to a rally in Alphabet shares, which hit a high of $323 on Tuesday boosted by company’s artificial intelligence gains. Brin owns a roughly 6% aggregate stake of the business and has seen his fortune gain $97.3 billion this year so far.

Sergey Brin gifts $1.1 billion in Alphabet stock after AI rally

Sergey Brin Donates Over $1.1 Billion in Alphabet Stock to Nonprofit and Charities

Sergey Brin, the Google co-founder and world's fourth richest person, has made a significant donation of over $1.1 billion worth of Alphabet Inc. stock this week. The majority of the funds, approximately $1 billion, will be directed towards Catalyst4, a nonprofit established by Brin in 2021.

Catalyst4 will receive approximately $1 billion in stock, focusing on research into central nervous system diseases and climate-change solutions.
The Michael J. Fox Foundation will receive $45 million, supporting research into Parkinson’s disease.
Brin is also donating $90 million to his family foundation.

This donation is not the first from Brin, as in May, he previously donated Alphabet shares worth $700 million to the same three charities.

As of now, Brin's net worth stands at $255.5 billion, according to the Bloomberg Billionaires Index. His net worth has seen a significant increase this year, thanks to a rally in Alphabet shares, which reached a high of $323 on Tuesday, driven by the company's artificial intelligence gains. Brin owns approximately 6% of the business and has seen his fortune gain $97.3 billion this year so far.