Lumin Digital, the Compounding Growth Platform serving banks and credit unions, has raised more than $115m in fresh capital, lifting the company to a $1.6bn valuation.
Over $70m of the total came directly from Lumin’s own clients, who opted to invest alongside the company’s existing shareholders. This client investment follows a $45m growth equity round led by Light Street Capital, bringing the combined new capital to over $115m. According to the company, the participation of its customer base signals ongoing belief in its strategy, delivery and long-term prospects as it grows its footprint and platform capabilities.
The proceeds will be channelled into Lumin’s product roadmap, with a focus on speeding up development across AI, payments, CRM, lending and other high-priority expansion areas built around its unified digital banking platform.
The business said it has delivered steady, sustainable growth, beaten its financial targets while strengthening margins and efficiency, and holds a Net Promoter Score of 94. An independent study carried out by 451 Research, part of S&P Global Market Intelligence, found that clients achieve a 145% return on investment across five years, with the outlay recouped in 10.8 months.
The latest raise adds to a $170m growth equity round closed in December 2024 and $75m of client investment unveiled in March 2025, leaving the firm with a robust balance sheet from which to serve its customers.
Lumin Digital provides a cloud-native, AI-accelerated digital banking system that was purpose-built rather than assembled from separate parts. The company argues that the longer a financial institution operates on its platform, the greater the advantage it builds, with user numbers, engagement, retention and revenue compounding over time.
FT Partners acted as exclusive strategic and financial advisor to Lumin Digital on the transaction.
Lumin Digital founder and CEO Jeff Chambers said, “We’ve built Lumin around a simple idea: the financial institutions that depend on our platform should have a stake in it.
“Fifteen more clients made that commitment in this round, and Light Street doubled down on theirs. Together, that tells us something. The people who know this company best, our customers and our lead investor, believe in where we’re taking it. This capital accelerates Lumin’s platform expansion already underway, and we’re doing it with a cap table built for the long term.”
Affinity Plus CEO Dave Larson said, “We are investing in Lumin Digital because we’ve seen firsthand what the platform does for user growth and digital engagement. This is a company that has earned our trust, and investing was a natural extension of a relationship already built on shared outcomes.”
Copyright © 2026 FinTech Global
Investors
The following investor(s) were tagged in this article.