Sironax
PrivateLast Round
Series B
Aug 2, 2022
Total Funding Raised
$300M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Sironax operates in Healthcare & Life Sciences and is based in Waltham, Massachusetts. Its latest recorded funding round was a Series B round in August 2022.
Sironax is a biotechnology company that develops innovative therapies for neurodegenerative, inflammatory, immunologic, and metabolic diseases.
Sector
Healthcare & Life Sciences
Verticals
Biotechnology, Drug Discovery, Clinical Trials
Business Model
B2B
Customer Profile
Services & Consulting
AI Layer
Non-AI
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Sironax Comparables
Compare Sironax with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Tenvie Therapeutics | 84% | |
| Nura Bio | 84% | |
| Denali Therapeutics | 81% |
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Sironax Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Aug 2, 2022 | ||||
| Series A | Aug 1, 2019 |
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Key People
Founding team and executive leadership
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Sironax Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Longriver Investment Partners | Series B |
| Temasek | Series A, Series B |
| MSA Capital | Series B |
| F-Prime Capital | Series A, Series B |
| Eight Roads Ventures | Series B, Series A |
| CBC Group | Series B |
| Invus Opportunities | Series B |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 22, 2026
Grew 17% QoQ, from 60 to 70 employees.
- Aug 20, 2026
Monthly visitors increased 48% MoM.
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Sironax Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
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Frequently Asked Questions
Common questions about Sironax's valuation, stock price, and market status.
Is Sironax a public or private company?
Sironax is a private company.
What is the current stock price of Sironax?
Sironax is a private company, so its shares have no public market price. Caplight tracks Sironax's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Sironax worth (valuation)?
Valuation information for Sironax is not publicly available.
Can I buy Sironax stock?
Sironax shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Sironax's last funding round?
Sironax's most recent funding round was Series B on August 2, 2022.
Who are the main investors in Sironax?
Key investors in Sironax include Yunfeng Capital, Yunfeng Capital, Gaorong Capital.
Will Sironax IPO soon?
No public IPO plans have been announced for Sironax.
How can I track Sironax secondary market activity?
Caplight tracks bids, offers, and trades in Sironax's shares on secondary markets.