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Rein Security

Rein Security

Private
New York City, New YorkCybersecurityhttps://reinsec.io/

Last Round

Seed

Jan 28, 2026

Total Funding Raised

$8M

Momentum

Top 10%

of companies Caplight tracks

Company Overview

Rein Security is a cybersecurity company that provides an enterprise agentic AI security platform designed to provide runtime visibility, risk context, and policy controls for AI agents and applications.

Sector

Cybersecurity

Verticals

Application Security, Cloud Security, Compliance & Risk, Vulnerability Management

Business Model

B2B

Customer Profile

Subscription SaaS

AI Layer

Application

Keywords

agentic AI securityAI agent securityAI Agent Securityruntime guardrailsAI governanceapplication securityruntime visibilityprompt injection protectionAI risk assessmentsidecar securityenterprise AI securityLLM securitybehavioral baseliningmodel control planeMCP

Historical Pricing

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Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

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Rein Security Comparables

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Rein Security comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Enkrypt AI
87%
Pillar Security
83%
Averta
82%

Rein Security Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
SeedJan 28, 2026

Key People

Founding team and executive leadership

Matan Bar-Efrat

Co-Founder & CEO

Founding Team

Rein Security Investors

Notable investors and investment history

Rein Security investors
InvestorRounds
Qino Cyber CapitalSeed
Glilot Capital PartnersSeed

Market signals

Structured signals derived from secondary market and firmographic data.

  • Aug 22, 2026

    Monthly visitors increased 115% MoM.

  • May 19, 2026

    Monthly visitors grew 292% MoM, reaching 4.1K.

Recent news

Latest coverage and updates

  • launchesJun 15, 2026

    Rein Security Inc launched security platform purpose-built for Enterprise Agents. on Jun 15th '26.

Rein Security Filings

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Rein Security filings preview — column headings only; records require access
TypeDateAmount OfferedAmount SoldFilingPagesDownload

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Frequently Asked Questions

Common questions about Rein Security's valuation, stock price, and market status.

Is Rein Security a public or private company?

Rein Security is a private company.

What is the current stock price of Rein Security?

Rein Security is a private company with no public stock price. Caplight tracks Rein Security's secondary market activity and provides MarketPrice™ estimates to Caplight users.

How much is Rein Security worth (valuation)?

Valuation information for Rein Security is not publicly available.

Can I buy Rein Security stock?

Rein 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 Rein Security's last funding round?

Rein Security's most recent funding round was Seed on January 28, 2026.

Who are the main investors in Rein Security?

Key investors in Rein Security include Glilot Capital Partners.

Will Rein Security IPO soon?

No public IPO plans have been announced for Rein Security.

How can I track Rein Security secondary market activity?

Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Rein Security's secondary market activity and sign up for updates.

Firmographic Details

HeadquartersNew York City, New York
Employee Range26
Year Founded2024
Last FundingJan 28, 2026

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