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Catalyst4

Catalyst4

Palo Alto, Californiacatalyst4.org

Overview

Catalyst4 is a grantmaking 501(c)(4) nonprofit organization founded by Google co-founder Sergey Brin. It was established with proceeds from the sale of Tesla stock. The organization makes investments and provides grants supporting initiatives related to climate and environmental challenges, as well as research and development for neurological diseases such as Parkinson's, Alzheimer's, and ALS. It has made direct investments in companies, including leading an $80 million Series B round for Stellaromics in 2025.

Portfolio Companies

1

Investments

Catalyst4 investments
CompanyDateStageLead
StellaromicsFeb 2025Series BLead

Sector & Stage Mix

Industry, funding stage, and valuation band breakdowns.

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SeedSeries ASeries BGrowth

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Investment Activity

Yearly cadence, pace, and funding raised over time.

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2021
2022
2023
2024
2025
2026

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FAQ

Firmographic Details

HeadquartersPalo Alto, California
Year FoundedN/A

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