Circadian Risk Secures $6 Million Series A to Accelerate AI-Driven Physical Security Platform

New updates have been reported about Circadian Risk.

Circadian Risk has raised $6 million in an oversubscribed Series A round led by Arthur Ventures, with participation from Roll Tack Ventures and existing backers 11 Tribes and Tamiami Angel Funds. The Ann Arbor–based company will use the capital to scale its enterprise risk analysis SaaS platform, which helps large organizations assess physical security vulnerabilities, compliance gaps, and threat exposure across complex, distributed environments.

CEO Michael Martin said the funding validates Circadian Risk’s strategy of serving sophisticated early adopters and will support broader market penetration and product refinement. The company plans to expand its development team to embed generative AI into its real-time, scored risk platform, and to grow its client success organization to deepen industry-specific expertise and support enterprise-scale deployments.

Lead investor Arthur Ventures, which focuses on B2B software and has a track record in security and risk management, cited Circadian Risk’s holistic approach to strengthening physical security and improving risk visibility as a key factor in its decision. Existing investor 11 Tribes pointed to the team’s execution, demonstrated customer traction, and strong founder–market fit as reasons for reinvesting, noting the company’s consistent achievement of milestones since its initial institutional funding.

New investor Roll Tack Ventures highlighted that many organizations still manage physical risk through manual, fragmented processes, and adopted Circadian Risk’s platform for its real-time visibility across multiple locations and its ability to improve decision confidence as adoption scales. Tamiami Angel Funds, which backed Circadian Risk through two prior funds with significant member co-investment, emphasized the company’s ongoing operational progress and responsiveness to investor feedback as drivers of continued support.

With this capital, Circadian Risk aims to refine its go-to-market strategy, accelerate enterprise adoption across key verticals, and enhance its dynamic, score-based dashboards and visualizations that support near real-time risk monitoring and scenario management. For executives and security leaders, the company’s strategy positions Circadian Risk to capture growing demand for data-driven, AI-enabled physical risk management tools as organizations seek more scalable, centralized ways to understand and mitigate security threats.