Chicago-Based Bank Celebrates Major Milestone as One of the Region’s Largest and Fastest-Growing Commercial Banks

Rosemont, IL — July 9, 2025 — Signature Bank has proudly advanced to the No. 12 position on the prestigious Crain's Chicago Business 2025 list of the Largest Banks in Chicago, up from No. 15 the previous year. This significant milestone reflects the bank’s robust growth, strong financial performance and unwavering commitment to delivering exceptional commercial banking solutions across the Chicago and Wisconsin markets.

"Our improved ranking on Crain’s Chicago Business list demonstrates our ongoing commitment to exceeding expectations,” said Mick O’Rourke, President and CEO of Signature Bank. “We are pleased to further solidify our position as a trusted leader in Chicago’s commercial banking market, offering clients a combination of personalized service and sophisticated financial solutions that rival much larger institutions.”

This annual ranking, based on total assets as of December 31, 2024, highlights Signature Bank’s strategic momentum and elevated market presence. The bank’s upward trajectory is fueled by its focus on customer-centric service, innovative technology and forward-thinking financial strategies.

Key Drivers of Growth and Recognition

  • Commercial Banking Excellence: Signature Bank specializes in relationship-based banking tailored to closely held companies throughout Illinois and Wisconsin, combining accessibility and strategic financial expertise.
  • Digital Innovation: The bank continues to invest in advanced banking technologies to provide seamless, secure and efficient service for both commercial and retail clients.
  • Award-Winning Workplace Culture: Named one of American Banker’s Best Banks to Work For, Signature Bank is powered by a dedicated team of professionals committed to excellence.

This achievement further reinforces Signature Bank’s status as one of the fastest-growing, independently owned business banks in the Chicago-Wisconsin region.

About Signature Bank

Signature Bank is an award-winning, relationship-based commercial bank wholly owned by Signature Bancorporation, Inc., a privately funded, locally owned bank holding company founded in 2006. Headquartered in Rosemont, IL, Signature Bank provides accessible, strategic and highly individualized commercial banking services to closely held companies, as well as full-service retail banking capabilities. Technology-driven and well-capitalized, Signature Bank is currently the fastest growing, independently owned business bank in the Chicago-Wisconsin markets and is one of American Banker’s Best Banks to Work For. Visit Signature Bank online at http://www.signaturebank.bank.