Rein Security raises $25 million in Series A financing, co-led by Glilot Capital and Sienna Venture Capital, to enhance security for AI agents in enterprises.
Amount Raised
$25 Million
Round Type
Series A
Investors
Description
Rein Security has successfully raised $25 million in a Series A funding round, with total funding secured to date reaching $35 million. The round was co-led by Glilot Capital and Sienna Venture Capital, along with participation from Corner Ventures, Atlacle, and RNP Capital Advisors. This financing will help Rein Security address emerging security challenges related to the deployment of AI agents across business systems. Their patented sidecar technology provides critical visibility and governance over agent actions.
Quick answer
Rein Security raised $25 Million in a Series A round, dated October 8, 2026. Investors: RNP Capital Advisors, Corner Ventures, Atlacle, Glilot Capital and Sienna Venture Capital.
- How much did Rein Security raise?
- Rein Security raised $25 Million in a Series A round on October 8, 2026.
- Who invested in Rein Security?
- RNP Capital Advisors, Corner Ventures, Atlacle, Glilot Capital and Sienna Venture Capital are named as investors in this round.
- What does Rein Security do?
- Rein Security is a cybersecurity company focused on addressing critical vulnerabilities in application security and AI.
- Where is Rein Security based and how big is it?
- Fundz records about 34 employees.
Source: Fundz verified event record.
Who else raised in Security and Cyber Security around the same time
Companies in the same sectors as Rein Security that raised within 45 days of this round, from Fundz verified event records.
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