Circadian Risk, a pioneer in enterprise risk analysis SaaS and scenario-based assessment products, has closed a $6 million Series A funding round led by Arthur Ventures, with participation from Roll Tack Ventures and existing investors 11 Tribes and Tamiami Angel Funds. The round was meaningfully oversubscribed, enabling the company to assemble a focused group of partners aligned with its long-term growth strategy.
The new capital will support expanded real-time risk assessment and visibility across complex enterprise environments. Circadian Risk plans to accelerate its next phase of growth by refining its go-to-market strategy, expanding its development team, and integrating generative AI into its real-time, scored platform. The company will also scale its client success team to deepen industry-specific expertise and support broader enterprise adoption across vertical markets.
Circadian Risk’s platform enables organizations to identify and manage physical security risks, compliance gaps, and threat exposure. The software provides both online and offline assessments, leveraging a logical, score-based framework to generate interactive dashboards and visualizations that are updated in near-real time to optimize decision-making.
Arthur Ventures, a Minneapolis-based early growth equity firm focused on B2B software companies, has invested in more than 70 software companies across North America, including several in the security and risk management sector. The firm’s backing signals confidence in Circadian Risk’s traction and ability to address the evolving challenges facing modern security teams.
Early and continuing investor 11 Tribes, which supported the company from its initial institutional funding, participated again in the Series A round, citing conviction in the company’s leadership, execution, and market opportunity. Roll Tack Ventures joined as a new investor, highlighting the platform’s ability to replace manual, fragmented risk management processes with real-time visibility across distributed locations. Tamiami Angel Funds, which had previously invested through two successive funds with strong member co-investment, also reaffirmed its support in the latest round.
With the Series A funding secured, Circadian Risk is positioning itself to expand its reach among sophisticated enterprise customers seeking more dynamic, data-driven approaches to managing physical security and organizational risk.
KEY QUOTES
“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. 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.”
Michael Martin, CEO of Circadian Risk
“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. 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.”
Jake Olson, Principal at Arthur Ventures
“From our earliest conversations, what stood out was the strength of the team and their understanding of the market. Circadian Risk wasn’t just building an interesting product. They had already demonstrated the ability to win customers and execute. That founder-market fit, combined with real traction, gave us confidence early on, and the company’s continued progress has reinforced that conviction.”
Mark Phillips, Founder & Managing Partner at 11 Tribes
“Circadian Risk addresses a critical need that many organizations have historically managed through manual, fragmented processes. Customers adopt the platform because it brings real-time visibility across distributed locations, allowing teams to anticipate issues and respond quickly. As adoption grows, the platform benefits from increasing returns to scale, and leaders gain better insight into risk and more confidence in their decisions.”
Sarah Lerner-Mantel, Partner at Roll Tack Ventures
“Each time Circadian Risk came back and asked us to invest, they had earned it. They continue to hit milestone after milestone, which made it an easy decision. Their meaningful progress, strong execution, and a willingness to listen give investors increased confidence to support the company over time.”
Timothy Cartwright, Founder and Chairman of Tamiami Angel Funds
