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- Onyx Security
Onyx Security Valuation, Funding & Investors
Onyx Security is valued at $640M as of July 2026.
Last Onyx Security valuation
$640M
Series B · Jul 2026
Last Onyx Security funding round
$113M
Series B · Jul 2026
Cumulative funding Onyx Security raised
$153M
across 3 funding rounds
Key investors in Onyx Security
Cyberstarts
Conviction
QuantumLight
Bessemer Venture Partners
FirstMark
TCV
Onyx Security Overview
About Onyx Security
Onyx Security is a New York-based platform securing AI and agent deployments. It enforces policies on model access, input sanitization, and output filtering in runtime. Onyx integrates with Kubernetes clusters on AWS and GCP for observability. Organizations mitigate hallucinations and exfiltration risks, as outlined at onyx.security.
Founded
2024
HQ
Website
Status
Privately held
Customer focus
B2B
Revenue model
Subscription
Valuation
$640M (Jul 2026)
Onyx Security Valuation
Onyx Security is currently valued at $640M, based on its Series B in July 2026.
The $113M round was led by Bessemer Venture Partners, with participation from Conviction, Vintage Investment Partners, FirstMark, G Squared, TCV and 2 other investors.
Onyx Security valuation by funding round
| Date | Stage | Valuation |
|---|---|---|
| Jul 2026 | Series B | $640M |
Onyx Security Funding History
Onyx Security has raised a total of $153M across 3 funding rounds.
Onyx Security's first fundraising round was a $5M seed round in August 2024. The most recent completed round was a $113M Series B in July 2026.
Onyx Security funding rounds
| Date | Stage | Investors | Raised | Valuation | Deal Summary |
|---|---|---|---|---|---|
| Jul 2026 | Series B | Bessemer Venture Partners (lead); Conviction; Vintage Investment Partners; FirstMark; G Squared; TCV; Cyberstarts; QuantumLight | $113M | $640M | Onyx Security raised USD 113 million in a Series B round led by Bessemer Venture Partners, with participation from Cyberstarts, TCV, Conviction, FirstMark, Vintage Investment Partners, QuantumLight, and G Squared. The financing reportedly valued the company at about USD 640 million, and the company’s total funding rose to USD 153 million since founding. The capital is intended to support training of Onyx’s proprietary models and expansion of its enterprise go-to-market in the United States and internationally. Onyx positions itself as an AI control company that helps enterprises secure and govern AI agents operating inside corporate systems, and its new funding followed a rapid scale-up after emerging from stealth four months earlier. Onyx Security was founded two years before the round and is based in New York, with operations also referenced in Tel Aviv. The company emerged from stealth with a prior USD 40 million of disclosed seed and Series A financing, and reports around the round said it had quadrupled revenue since launch. |
| Mar 2026 | Series A | Conviction (lead); Cyberstarts (lead); QuantumLight | $35M | - | - |
| Aug 2024 | Seed | Cyberstarts | $5M | - | Onyx Security, an Israeli cybersecurity startup, develops a platform to secure and control AI agents in enterprises by detecting assets, enforcing policies in real time, and using a Guardian Agent to block risks or require approvals. The company launched publicly with $40M total funding, including a $5M seed round from Cyberstarts in 2024 and a $35M Series A led by Conviction. Investors also include angels in cyber and AI sectors. Onyx Security addresses risks from autonomous AI agents, such as reasoning errors, hallucinations, and attacks via malicious prompts, providing a control plane for security, governance, and infrastructure teams. Founded by Bar Kogan (ex-Unit 8200) and Gil Elbaz (AI researcher ex-Nvidia/IDF), the company employs over 70 people across Israel, US, and Canada, and serves Fortune 500 customers. Funds support product/engineering expansion, R&D, sales in the US, and new AI models. |
Who has invested in Onyx Security?
8 investors have backed Onyx Security across its funding rounds, including Cyberstarts, Conviction, QuantumLight, Bessemer Venture Partners, FirstMark and TCV.
Lead investors include Bessemer Venture Partners, Conviction and Cyberstarts.
Onyx Security Investors
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
| 3 | Lead | Aug 2024 | ||
| 2 | Lead | Mar 2026 | ||
| 2 | Participant | Mar 2026 | ||
| 1 | Participant | Jul 2026 | ||
| 1 | Participant | Jul 2026 | ||
| 1 | Lead | Jul 2026 | ||
This data is available for Pro users. Sign up to see all 8 Onyx Security investors. Start Free Trial | ||||
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Start Free TrialOnyx Security Competitors
Onyx Security competitors include listed companies like PKSHA Technology and Hanwang Technology Co, and private ones like Doppel, Exaforce, Pindrop and Pryon.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Private | - | - | $600M | - | ||
| Private | - | - | $725M | - | ||
| Private | - | - | $977M | - | ||
| Publicly listed | $140M | $47M | $627M | 2.4x | ||
| Private | - | - | $625M | - | ||
| Publicly listed | $282M | ($14M) | $605M | - |
Onyx Security Public Comps
Onyx Security is still privately-owned, but its public comps include Aura.com, DBAPPSecurity, PKSHA Technology, OneSpan, Unisound Ai Technology, Hanwang Technology Co, Feitian Technologies, Sansec, Baudroie and Beijing VRV Software.
| Last FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $193M | ($155M) | 5.7x | - | (7.0x) | - | |||
| $321M | $15M | 1.8x | 1.8x | 38.5x | 21.1x | |||
| $140M | $47M | 4.1x | 2.4x | 12.2x | 10.7x | |||
| $243M | $57M | 2.6x | 2.5x | 11.0x | 8.9x | |||
| $181M | ($22M) | 3.0x | 2.1x | (24.5x) | (36.1x) | |||
| $282M | ($14M) | 2.2x | - | (44.4x) | - | |||
| $104M | ($4K) | 6.2x | - | (168378.6x) | - | |||
| $83M | ($2M) | 6.1x | 5.4x | (310.1x) | (388.8x) | |||
This data is available for Pro users. Sign up to see all Onyx Security competitors and their valuation data. Start Free Trial | ||||||||
Common questions about Onyx Security
| When was Onyx Security founded? | Onyx Security was founded in 2024. |
| Where is Onyx Security headquartered? | Onyx Security is headquartered in Wilmington, DE, United States. |
| Is Onyx Security publicly listed? | No, Onyx Security is a private, VC-backed company. |
| What is Onyx Security's valuation? | Onyx Security was last valued at $640M in its Series B in July 2026. |
| How much funding has Onyx Security raised? | Onyx Security has raised $153M across 3 funding rounds. |
| What was Onyx Security's last funding round? | Onyx Security's last funding round was a $113M Series B in July 2026, led by Bessemer Venture Partners. |
| Who are Onyx Security's investors? | Onyx Security's investors include Cyberstarts, Conviction, QuantumLight, Vintage Investment Partners, FirstMark, Bessemer Venture Partners, G Squared and TCV. |
| Which companies are comparable to Onyx Security? | Companies comparable to Onyx Security include Doppel, Exaforce, Pindrop, PKSHA Technology, Pryon and Hanwang Technology Co. |
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