OLD SECOND BANCORP INC 8-K

What Happened

• Old Second Bancorp, Inc. (the “Company”) announced it will release financial results for the second quarter of 2026 after the market close on July 22, 2026.
• The company will host an earnings call on Thursday, July 23, 2026 at 10:00 a.m. Eastern Time (9:00 a.m. Central Time), accessible via a live webcast. The 8-K was signed by Bradley S. Adams, Executive Vice President, Chief Operating Officer and Chief Financial Officer, on July 1, 2026.

Key Details

• Q2 2026 results to be released: after market close on July 22, 2026.
• Earnings call: July 23, 2026 at 10:00 a.m. ET / 9:00 a.m. CT.
• Live webcast: https://www.webcaster5.com/Webcast/Page/2239/54212 ; also available via https://investors.oldsecond.com/events.
• Replay of the webcast will be available on the Investor Relations Events page for up to one year. Investors are encouraged to register at least 10 minutes before the call.

Why It Matters

• This filing sets the schedule for Old Second’s quarterly earnings disclosure and gives investors an opportunity to hear management discuss quarterly results, performance drivers and answer questions on the call.
• The 8-K does not include financial results or guidance; it only announces timing and access details for the Q2 2026 earnings release and call.