• Old Second Bancorp EVP Donald Pilmer sold 25,000 common shares on May 11, 2026 at USD 20.75.
• Directly held stake fell to 48,054 shares following transaction.
• Also reported 39,498 restricted stock units held directly.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Old Second Bancorp Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001673321-26-000010), on May 11, 2026, and is solely responsible for the information contained therein.