OLD SECOND BANCORP INC 8-K

What Happened Old Second Bancorp, Inc. announced it will release financial results for the first quarter of 2026 after the market closes on April 22, 2026, and will host an earnings call on Thursday, April 23, 2026 at 10:00 a.m. Eastern Time (9:00 a.m. Central Time). Investors can listen via a live webcast (https://www.webcaster5.com/Webcast/Page/2239/53807) or through the Events section of the Old Second Investor Relations site. The 8-K was signed by Bradley S. Adams, Executive Vice President, Chief Operating Officer and Chief Financial Officer, and dated April 1, 2026.

Key Details

• Earnings release date: April 22, 2026 (after market close).
• Earnings call: April 23, 2026 at 10:00 a.m. ET / 9:00 a.m. CT.
• Webcast URL: https://www.webcaster5.com/Webcast/Page/2239/53807; also available via https://investors.oldsecond.com/events.
• Investors encouraged to register at least 10 minutes before the call; replay will be available on the IR site for up to one year.

Why It Matters This schedule tells investors when Old Second will provide its quarterly earnings and management commentary. The post-close release followed by a next-morning call gives shareholders and analysts timely access to the company's reported quarterly results and management's discussion, and the webcast and replay make the information widely accessible.