Circadian Risk raises $6M in Series A funding led by Arthur Ventures to refine its growth strategy and expand its development team.
Amount Raised
$6 Million
Round Type
Series A
Ann ArborInformation TechnologySecurityNetwork SecurityInvestors
Description
Circadian Risk, an Ann Arbor, MI-based company which specializes in enterprise risk analysis SaaS, raised $6M in Series A funding. The round was led by Arthur Ventures with participation from Roll Tack Ventures, 11 Tribes, and Tamiami Angel Funds. The company intends to use the funds to accelerate its growth and integrate generative AI into its platform. Led by CEO Michael Martin, Circadian Risk empowers organizations to control risk through awareness and action.
Quick answer
Circadian Risk raised $6 Million in a Series A round, dated February 24, 2026. Investors: Roll Tack Ventures, 11 Tribes, Tamiami Angel Funds and Arthur Ventures. Circadian Risk is based in Ann Arbor, Michigan, United States.
- How much did Circadian Risk raise?
- Circadian Risk raised $6 Million in a Series A round on February 24, 2026.
- Who invested in Circadian Risk?
- Roll Tack Ventures, 11 Tribes, Tamiami Angel Funds and Arthur Ventures are named as investors in this round.
- What does Circadian Risk do?
- Circadian Risk provides a suite of tools aimed at assessing and improving physical security for enterprise companies.
- Where is Circadian Risk based and how big is it?
- Circadian Risk is based in Ann Arbor, Michigan, United States.
- Who are the decision-makers at Circadian Risk?
- Fundz holds 1 contact at Circadian Risk. Names and contact details are shown to Fundz members.
Source: Fundz verified event record.
Who else raised in Security and Network Security around the same time
Companies in the same sectors as Circadian Risk that raised within 45 days of this round, from Fundz verified event records.
- Trent AI raised $13M (Seed) on April 7, 2026.
- Littlefish raised $9.5M (Series A) on April 7, 2026.
- Test of Things raised $1.4M (Pre-Seed) on April 1, 2026.
- TENEX.AI raised $250M (Series B) on March 31, 2026.
- Huskeys raised $8M (Seed) on March 30, 2026.
- WideField Security raised an undisclosed amount (Series A) on March 19, 2026.
Who to call at Circadian Risk, and when
A new round usually means Circadian Risk is about to hire and buy. The teams that reach out first get the meeting.
- An alert the day Circadian Risk raises, hires an executive or expands, scored against what you sell
- The decision-makers there, with verified emails
- Who you already know at Circadian Risk, from your own LinkedIn network
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Funding Insights
What this usually meansCircadian Risk raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.
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