Onyx Security
PrivateLast Round
Series B
Jul 29, 2026
Est. Valuation
$640M
Total Funding Raised
$158M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Onyx Security is a cybersecurity company that provides a secure AI control plane for enterprises to discover, monitor, and govern autonomous AI agents.
Sector
Cybersecurity
Verticals
Application Security, Data Governance, Compliance & Risk, Vulnerability Management
Business Model
B2B
Customer Profile
Subscription SaaS
AI Layer
Infrastructure
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Onyx Security Comparables
Compare Onyx Security with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Noma Security | 94% | |
| WitnessAI | 84% | |
| Cranium | 82% |
Onyx Security Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Jul 29, 2026 | ||||
| Series A | Mar 12, 2026 | ||||
| Seed | Jun 27, 2024 |
Onyx Security Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Cyberstarts | Series B, Series A, Seed |
| Vintage Investment Partners | Series B |
| Conviction | Series B, Series A |
| FirstMark Capital | Series B |
| TCV | Series B |
| Bessemer Venture Partners | Series B |
| G Squared | Series B |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jul 29, 2026
$113M round led by Bessemer Venture Partners.
- Jul 20, 2026
Open roles increased to 17, 2.1x the trailing average.
Recent news
Latest coverage and updates
- receives_financingJul 30, 2026
Onyx received financing of $113M in Series B on Jul 30th '26.
Onyx Security 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.
Request accessFrequently Asked Questions
Common questions about Onyx Security's valuation, stock price, and market status.
Is Onyx Security a public or private company?
Onyx Security is a private company.
What is the current stock price of Onyx Security?
Onyx Security is a private company with no public stock price. No recent secondary market data is available.
How much is Onyx Security worth (valuation)?
Valuation information for Onyx Security is not publicly available.
Can I buy Onyx Security stock?
Onyx Security shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.
When was Onyx Security's last funding round?
Onyx Security's most recent funding round was Series A on March 12, 2026.
Who are the main investors in Onyx Security?
Key investors in Onyx Security include CyberStarts, Conviction Partners.
Will Onyx Security IPO soon?
No public IPO plans have been announced for Onyx Security.
How can I track Onyx Security secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Onyx Security's secondary market activity and sign up for updates.