| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Ladowicz John | Director | 8950 WILDLIFE LOOP, SARASOTA | /s/ Shirley Cantrell, Attorney-in-Fact | 09 Dec 2025 | 0001424453 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OSBC | Old Second Bancorp, Inc. Common Stock | Sale | $250,000 | -12,500 | -7.7% | $20.00 | 149,654 | 09 Dec 2025 | IRA | |
| holding | OSBC | Old Second Bancorp, Inc. Common Stock | 36,121 | 09 Dec 2025 | Direct |