Menlo Security
PrivateLast Round
Series E
Extension
Dec 10, 2023
Est. Valuation
$800M
Total Funding Raised
$250.5M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Menlo Security is a cybersecurity company that provides a cloud-delivered browser security platform designed to eliminate malware threats from the web, documents, and email through isolation-based technology.
Sector
Cybersecurity
Verticals
Cloud Security, Application Security, Zero Trust, Email Security, Data Protection
Business Model
B2B
Customer Profile
Subscription SaaS, Services & Consulting
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Menlo Security Comparables
Compare Menlo Security with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Island | 82% | |
| Zscaler | 82% | |
| Authentic8 | 81% |
Menlo Security Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series E Extension | Dec 10, 2023 | ||||
| Series E | Nov 12, 2020 | ||||
| Series D | Jul 9, 2019 | ||||
| Series C | Dec 11, 2017 | ||||
| Series B | Jun 8, 2015 | ||||
Series A | Nov 18, 2014 |
Key People
Founding team and executive leadership
Menlo Security Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Engineering Capital | Series C, Series B, Series D, Series E, Series A |
| Neuberger Berman | Series E |
| Osage University Partners | Series C, Series B, Series A, Series D, Series E |
| Amex Ventures | Series C, Series D, Series E |
| Vista Equity Partners | Series E |
| General Catalyst | Series C, Series E, Series B, Series D, Series A |
| HSBC Holdings plc | Series C, Series D |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jul 27, 2026
Launched Menlo Agent Runtime Security (MARS) for AI agent protection.
- Jul 27, 2026
Department of Defense identified as a new customer.
Recent news
Latest coverage and updates
- launchesAug 12, 2026
On Aug 12th '26, Menlo Security and IGEL deliver a joint solution that combines IGEL-powered endpoints with Menlo Secure Application Access to coordinate Zero Trust endpoint governance and browser-based application access.
- launchesAug 7, 2026
Menlo Security develops Menlo Agent Runtime Security (MARS), which isolates every AI agent session in a secure cloud environment, analyzes and sanitizes content, and is now available for deployment against prompt injection threats in Aug '26.
Menlo 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 Menlo Security's valuation, stock price, and market status.
Is Menlo Security a public or private company?
Menlo Security is a private company.
What is the current stock price of Menlo Security?
Menlo Security is a private company, so its shares have no public market price. Caplight tracks Menlo Security's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Menlo Security worth (valuation)?
Menlo Security's valuation is estimated at $800.0M based on funding round data.
Can I buy Menlo Security stock?
Menlo Security shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Menlo Security's last funding round?
Menlo Security's most recent funding round was Series E Extension on December 10, 2023.
Who are the main investors in Menlo Security?
Key investors in Menlo Security include Vista Equity Partners, General Catalyst, J.P. Morgan Asset Management, Sutter Hill Ventures.
Will Menlo Security IPO soon?
No public IPO plans have been announced for Menlo Security.
How can I track Menlo Security secondary market activity?
Caplight tracks bids, offers, and trades in Menlo Security's shares on secondary markets.