OSBC

Business Context and Reporting Period

Company: Old Second Bancorp, Inc.
Filing Type: Form 8-K (Current Report)
Date of Report: October 1, 2025
Reporting Period: Announcement regarding the upcoming Third Quarter 2025 financial results.

Key Financial Metrics

The filing text does not provide specific values for revenue, profit, cash flow, margins, debt, or liquidity. This document serves solely as a notification of an upcoming earnings release.

Material Changes

No material financial changes or comparative data are disclosed in this filing.

Guidance, Outlook, and Management Commentary

Earnings Release Schedule:

• Release Date: After market close on October 22, 2025.
• Earnings Call Date: Thursday, October 23, 2025.
• Call Time: 10:00 a.m. Eastern Time (9:00 a.m. Central Time).

Access Details:

• Dial-in Number: 888-506-0062 (Entry Code: 740004).
• Replay Availability: Until 10:00 a.m. Eastern Time on October 30, 2025.
• Replay Number: 877-481-4010 (Replay PIN: 53047).

Management Commentary: No specific commentary or outlook is provided in this filing; details will be presented during the scheduled earnings call.

Investor Verification Checklist

• Verify the actual financial results released on October 22, 2025.
• Confirm attendance or access to the earnings call on October 23, 2025, for management discussion.
• Review the replay of the earnings call if unable to attend live.
• Check for any subsequent filings (e.g., 10-Q) containing the detailed financial statements referenced in this 8-K.