Sergey Brin, co-founder of Google and one of the world’s wealthiest individuals, has donated $700 million worth of Alphabet shares to support healthcare and scientific research. The donation, disclosed in a recent regulatory filing, involved approximately 4.1 million shares split between Class A and Class C stock.
According to a representative from Brin’s family office, the gift was distributed among three nonprofit organizations:
- Catalyst4 received $550 million
- Sergey Brin Family Foundation received $100 million
- Michael J. Fox Foundation received $50 million
Brin, who is worth an estimated $137 billion, has long been a leading figure in medical philanthropy. His giving is deeply personal—his mother battled Parkinson’s disease, and he carries a genetic mutation (LRRK2 G2019S) that significantly raises his own risk.
Through Catalyst4, Brin is backing CNS Quest, a major initiative focused on Parkinson’s, bipolar disorder, and autism. The organization can also invest in for-profit ventures and currently holds stakes in biotech companies such as MapLight, which is conducting clinical trials, and Stellaromics, which develops genetic mapping tools for drug discovery.
Sergey Brin has given over $1.5 billion to support Parkinson’s disease research and treatment, motivated by his family’s experience with the illness. Brin is the largest individual donor in this field. His most recent gift signals a continued commitment to accelerating both basic research and the development of real-world treatments, especially at a time when public funding for such initiatives faces increasing pressure.