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Sironax

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Clinical-stage biotechnology company that develops novel products and treatments for age-related degenerative diseases

Changping District, ChinaFounded 2017Biotech & Life Sciences
Valuation $100–250M Last recorded · 2026
Headcount <100 Current team size
Total funding $100–500M Disclosed equity funding
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About Sironax

Sironax is a clinical-stage biotechnology firm established in 2017 by co-founders Dr. Xiaodong Wang and Dr. Zhiyuan Zhang. The company's scientific foundation is built upon Dr. Wang's pioneering research over two decades into the mechanisms of programmed cell death and its connection to aging. This deep scientific expertise underpins Sironax's strategy to develop therapies that target the root causes of age-related degenerative diseases.

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The company's business model is centered on the discovery, in-house development, and clinical progression of novel drug candidates. Sironax has secured substantial financial backing, raising over $300 million to date, including a significant $200 million Series B financing round in August 2022. This funding is being used to advance its clinical pipeline and expand research and development operations. The company's strategy also includes strategic partnerships, such as a July 2025 agreement with Novartis, granting an exclusive option to acquire Sironax's Brain Delivery Module (BDM) platform, a technology designed to help therapeutics cross the blood-brain-barrier.

Sironax's therapeutic pipeline focuses on key pathways of cellular aging, including regulated cell death, neuroinflammation, and metabolic changes. Its portfolio consists of multiple programs targeting conditions like neurodegenerative diseases, muscular weakness, and metabolic disorders. Several drug candidates, all designed and synthesized in-house, have advanced to clinical trials. Notable assets include RIPK1 (receptor-interacting serine/threonine-protein kinase 1) inhibitors, such as SIR0365, which has completed Phase 1b studies, and SIR2446, which has entered Phase 1a trials. Another candidate, SIR2501, recently completed a Phase 1 study in Australia and China for potential application in neurodegenerative diseases like ALS. Operating globally with a growing team of over 140 employees in China, the U.S., and Australia, Sironax aims to shift the treatment paradigm for a patient population currently served mostly by palliative care.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2017
Headquarters
Changping District, China
Employees
60
Open positions
None listed
Dealroom signal
56.4/100
Industry
Health
Sub-industry
BioTechnology
Sector
Biotech & Life Sciences, Biotechnology, Spinout, Rumoured $1B, Biotech and Pharma, DT and LS, science-based
Business model
Manufacturing
Client focus
b2b

Funding history

4 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES BOther financing Aug 2022 $200M $800M F-Prime · K2 Venture Capital · CBC Group · LSV Capital ↗
SERIES AOther financing Sep 2019 $101M $404M F-Prime —
Showing the latest 2 of 4 recorded eventsBook a demo for the full funding history →

Growth signals

Sironax website traffic

Latest recorded traffic for Sironax is 4.9K monthly website visits, up 206.3% over the last three months. Sironax's team grew 17.6% over the past year.

Latest monthly visits4.9K 3-month web change+206.3% 1-year team growth+17.6%
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Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

15 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A14 investors entered at this stage

Other known investors1 additional known investor

  • National Institute of Biological Sciences (NIBS), Beijing.
Team profiled 1 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators Hidden — book a demo quality score
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
3 countries with
team presence
🇨🇳 China52.2%
🇺🇸 United States43.5%
🇦🇺 Australia4.3%
3 countries shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Sironax on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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