
Sergey Brin has made one of the largest philanthropic moves of the year, donating more than $1.1 billion worth of Alphabet stock to multiple charitable organisations, as per the news reports.
The contribution reflects his renewed focus on medical research, climate solutions, and long-term global impact.
As per news reports, a regulatory filing revealed that more than 3.5 million Alphabet shares were transferred this week, that nearly $1 billion is being allocated to Catalyst4, the nonprofit Brin founded in 2021. The organisation focuses on advancing research in central nervous system disorders and developing climate-change mitigation technologies.
In addition, Brin has directed about $90 million to his family foundation and $45 million to the Michael J. Fox Foundation, which specialises in Parkinson’s disease research. Earlier in May, Brin provided another $700 million in Alphabet shares to the same set of charities, continuing his steady philanthropic momentum.
Brin, aged 52, currently ranks as the world’s 4rth-richest individual with a net worth of $255.5 billion, according to the Bloomberg Billionaires Index. His wealth has risen sharply this year as Alphabet’s stock rise driven by strong advances in the company’s artificial intelligence capabilities.
Holding around 6% of Alphabet, Brin has added $97.3 billion to his fortune so far this year, bolstering his ability to expand his philanthropic initiatives.
Sergey Brin’s latest donation marks another substantial step in his long-term philanthropic strategy. By directing capital toward scientific research and global challenges, he reinforces his role as a major contributor to high-impact innovation and social advancement.
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Published on: Dec 1, 2025, 11:05 AM IST

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