
Rein Security is the agentic AI security company purpose-built for enterprise agents. With a patented, real-time architecture, Rein delivers full visibility and protection across every enterprise agent tracing every action to the line of code that triggered it and connecting it to its business outcome. Trusted by leading Fortune 500 companies and backed by Glilot Capital, Sienna Venture Capital, and Corner Ventures, Rein Security was founded in 2024 and is co-headquartered in New York City and Tel Aviv.
| Date | Amount | Type | Investors | Valuation |
|---|---|---|---|---|
| 10/09/26 | $25,000,000 | Series A |
Atlacle Corner Ventures Glilot Capital ![]() RNP Capital Advisors Sienna Ventures ![]() | undisclosed |