Circadian Risk Secures $6M to Arm Physical Security with AI

ANN ARBOR, Mich. – February 24, 2026 – In a significant move that underscores the growing importance of physical security in an increasingly complex world, Circadian Risk has closed an oversubscribed $6 million Series A funding round. The Ann Arbor-based enterprise risk analysis company plans to use the capital to integrate generative AI into its platform and accelerate its expansion, signaling a major shift from reactive to predictive security management.

The round was led by Arthur Ventures, a B2B software-focused firm, with participation from new investor Roll Tack Ventures and existing backers 11 Tribes and Tamiami Angel Funds. The strong investor demand, which led to the round being "meaningfully oversubscribed," highlights a growing consensus in the investment community: the physical world is the new frontier for risk management innovation.

Beyond the Digital Firewall

For years, corporate security budgets have overwhelmingly focused on cybersecurity, building digital fortresses to protect data and networks. However, recent global disruptions, evolving workplace models, and a rise in physical threats have exposed a critical vulnerability: the often-neglected physical security of assets, people, and operations. Traditional methods of assessing these risks—relying on static spreadsheets, manual audits, and infrequent consulting reports—are proving inadequate in today's dynamic environment.

Circadian Risk was founded to address this gap. The company's Software-as-a-Service (SaaS) platform replaces fragmented, manual processes with a dynamic, data-driven approach. It allows organizations to monitor risk across distributed locations in near-real time, using a logical, score-based system to quantify and visualize threats.

"We work closely with some of the world's most sophisticated organizations—early adopters who understand the complexity of modern risk and the challenge of effective management," said Michael Martin, CEO of Circadian Risk. "This investment affirms that we're on the right path and gives us the resources to expand our reach, refine our platform, and bring our approach to a broader market."

This approach resonates with a market grappling with the convergence of physical and digital threats. A security breach is no longer just about a hacker in a remote location; it can be an unauthorized person gaining physical access to a data center, a supply chain disruption caused by regional instability, or an act of workplace violence. Platforms like Circadian Risk's provide a holistic view, enabling security leaders to understand how different types of risks interrelate.

The AI Advantage in a Physical World

The most forward-looking aspect of Circadian Risk’s strategy is its plan to integrate generative AI into its platform. While AI has become a buzzword in technology, its application in physical security represents a transformative leap. The funding will expand the company's development team specifically to build out these capabilities.

Instead of just reporting on current risks, the enhanced platform aims to predict future ones. By analyzing vast datasets—including historical incident reports, compliance standards, environmental data, and even open-source intelligence—generative AI can identify subtle patterns and generate highly realistic "what-if" scenarios. This allows organizations to simulate potential threats, from coordinated attacks to natural disasters, and test the resilience of their security protocols in a virtual environment.

The AI integration will also automate the generation of detailed reports and actionable recommendations, freeing up security professionals from tedious administrative work to focus on strategic decision-making. This move positions Circadian Risk not just as a monitoring tool, but as an intelligent partner in risk mitigation.

"Circadian Risk addresses a critical need that many organizations have historically managed through manual, fragmented processes," said Sarah Lerner-Mantel, Partner at new investor Roll Tack Ventures. "Customers adopt the platform because it brings real-time visibility across distributed locations, allowing teams to anticipate issues and respond quickly."

Strong Investor Conviction Signals Market Shift

The composition of the investment round speaks volumes about the company's perceived trajectory. The round was led by Arthur Ventures, a firm with a deep portfolio in B2B software and a keen eye for companies solving complex enterprise challenges.

"We are excited to partner with Circadian Risk, a company that has earned the confidence of its customers by providing a holistic platform that strengthens physical security and limits risk," stated Jake Olson, Principal at Arthur Ventures. "We believe their solution addresses the unique challenges faced by security teams today and are thrilled to provide growth capital to support their continued success."

Equally telling is the enthusiastic participation of existing investors, who have witnessed the company's progress firsthand. 11 Tribes and Tamiami Angel Funds, both early backers, increased their commitment, a powerful signal of their sustained confidence in the leadership, technology, and market opportunity.

"From our earliest conversations, what stood out was the strength of the team and their understanding of the market," commented Mark Phillips, Founder & Managing Partner at 11 Tribes. He noted that the company had already demonstrated "founder-market fit, combined with real traction," which gave his firm confidence from the beginning.

Timothy Cartwright, Founder and Chairman of Tamiami Angel Funds, echoed this sentiment, emphasizing the company's consistent execution. "Each time Circadian Risk came back and asked us to invest, they had earned it," he said. "They continue to hit milestone after milestone, which made it an easy decision."

With this new infusion of capital, Circadian Risk plans to accelerate its next phase of growth. Beyond the technological enhancements, the company will refine its go-to-market strategy and scale its client success team. This dual focus on product innovation and customer support aims to deepen industry-specific expertise and drive broader adoption across key vertical markets, ensuring that as the platform grows more intelligent, its users are fully empowered to leverage its capabilities.

This funding is more than just a financial milestone for one company; it represents a broader market awakening to the critical importance of modernizing physical security. As enterprises navigate an increasingly uncertain landscape, the demand for intelligent, proactive, and integrated risk management solutions is set to grow, placing pioneers like Circadian Risk at the center of a crucial industry transformation.