Menlo Security
PrivateLast Round
Series E
Extension
Dec 10, 2023
Est. Valuation
$800M
Total Funding Raised
$250.5M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Menlo Security operates in Cybersecurity and is based in Mountain View, California. Its latest recorded funding round was a Series E Extension round in December 2023.
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
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% |
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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 |
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Key People
Founding team and executive leadership
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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 |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Nov 12, 2026
Menlo Security launched the Menlo IRIS Browser Extension, a new product that adds its enterprise browser security controls to existing browsers without requiring employees to switch to a separate secure browser.
- Jul 27, 2026
Launched Menlo Agent Runtime Security (MARS) for AI agent protection.
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Recent news
Latest coverage and updates
- launchesNov 12, 2026
Menlo Security launches the Menlo IRIS Browser Extension, which adds enterprise browser security controls to employees’ existing browsers and gives security teams visibility into and control over AI use, data movement, files, and third-party extensions, on Nov 12th '26.
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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.
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Frequently 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.