About Us

Who is Old Second? Learn More

From our humble small-town beginnings in 1871 Aurora, IL, Old Second has grown into one of the Chicago region’s largest and strongest community banks. We’ve built a history of unparalleled service by forging strong, lasting relationships with our clients.

Investor Relations Learn More

Old Second’s holding company, Old Second Bancorp, is publically traded on the NASDAQ exchange (OSBC). To learn more about the organization’s corporate, financial and stock structure and performance, click here.

News/Press Releases Learn More

We invite you to read the latest news about and announcements from Old Second.

Community Involvement Learn More

At Old Second, we’re committed to serving and strengthening the communities in which we operate.

Old Second History Learn More

View the book The History of Old Second National Bank online at the Community Foundation of the Fox River Valley website.