Circadian Risk, an Ann Arbor, MI-based company that specializes in enterprise risk analysis SaaS and scenario-based assessment products, has raised $6 million in a Series A funding round led by Arthur Ventures.
The round also saw participation from Roll Tack Ventures, 11 Tribes, and Tamiami Angel Funds.
Roll Tack, a new investor in Circadian Risk, focuses on B2B technologies that enhance mid-market corporate tech stacks and drive scalable growth and resilience across the Midwest’s key industries.
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The company plans to use the funds to accelerate its next stage of growth, refine its go-to-market strategy, and expand its development team to integrate generative AI into its real-time scoring platform.
Circadian Risk is a leader in enterprise risk analysis software and scenario-based assessment tools. Its platform helps organizations find and manage physical security risks, compliance gaps and threat exposure. The company will also grow its client success team to add more industry expertise and support wider adoption across different markets.
“Arthur Ventures, a Minneapolis-based early growth equity firm focused on B2B software, has invested in over 70 software companies across North America, including multiple firms in security and risk management.”
“We partner with leading organizations that grasp the complexities of modern risk,” said Michael Martin, CEO of Circadian Risk. “This investment confirms our direction and provides the resources to grow our platform and reach more clients.”
“We’re excited to partner with Circadian Risk, a company trusted by its customers for its comprehensive platform that improves security and reduces risk,” said Jake Olson, Principal at Arthur Ventures. “We believe their solution meets today’s security challenges and are glad to provide growth capital to support their continued success.”
“From the start, we were impressed by the team and their market knowledge,” said Mark Phillips, Founder & Managing Partner at 11 Tribes. “Circadian Risk isn’t just creating a great product—they’ve shown they can win customers and deliver results. Their founder-market fit and early traction gave us confidence, and their continued progress has only strengthened it.”
“Circadian Risk solves a key problem that many organizations have handled with manual, disconnected processes,” said Sarah Lerner-Mantel, Partner at Roll Tack Ventures. “The platform gives real-time visibility across locations, helping teams spot issues and act quickly. As more customers use it, the platform scales, giving leaders clearer insight and greater confidence in managing risk.”
“Every time Circadian Risk asked us to invest, they had earned it,” said Timothy Cartwright, Founder and Chairman of Tamiami Angel Funds. “They keep reaching milestones, making the decision easy. Their steady progress, strong execution, and openness give investors confidence to back them long-term.”
About Circadian Risk
Founded in 2016 by CEO Michael Martin, Circadian Risk develops risk analysis software that helps organizations understand and manage risk. The platform lets customers track risks, handle multiple threat and compliance scenarios, and share risk information across their teams. With online and offline assessments, the software uses a score-based system to create interactive dashboards and visualizations that update in near real time, helping leaders make better decisions.
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