Sironax

Transformative therapies for degenerative diseases

Beijing, China · Founded 2017 · $200.0M raised

Headquarters
Beijing
Employees
51–200
Founded
2017
Business Model
B2B
Total Funding
$200.0M
Last Round
$200.0M Series BAug 2022
Rounds
2

About

Sironax is a clinical-stage biotechnology company founded in 2017 by Dr. Xiaodong Wang and Dr. Zhiyuan Zhang, targeting neurodegenerative, inflammatory, metabolic, and rare diseases. The company is advancing three clinical candidates—SIR2501, SIR9900, and SIR4156—with 170+ employees across the US, China, Switzerland, and Australia. In 2025, Sironax granted Novartis an exclusive option to acquire its Brain Delivery Platform.

Summary

Sironax is a Biotech company based in Beijing, China, founded in 2017. It has raised $200.0M in total across 2 rounds, most recently a $200.0M Series B round in Aug 2022. Investors include Gaorong Capital, Yunfeng Capital and Temasek.

Tech & App Stack

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Funding History

Series BSeries BAug 2022
$200.0M

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Series A through Series B — per-round amounts, valuations, and who invested in each round.

Investors

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