Arthur Ventures is a Grand Rapids, Michigan–based venture capital firm founded in 2012 that focuses on early- and growth-stage investments in B2B software, enterprise technology and data-driven businesses across North America, typically leading or co-leading Series A and B rounds with check sizes often in the low-to-mid-millions; the firm partners with founders to support scaling operations, customer expansion and product development while maintaining a sector-focused portfolio spanning analytics, automation, cybersecurity and vertical SaaS solutions.