| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Gartelmann Richard A JR | EVP | 37 S. RIVER ST., AURORA | /s/ Shirley Cantrell, Attorney-in-Fact | 05 Feb 2026 | 0001840027 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OSBC | Old Second Bancorp, Inc. Common Stock | Sale | $41,950 | -2,000 | -7.4% | $20.98 | 24,874 | 05 Feb 2026 | Direct | |
| holding | OSBC | Old Second Bancorp, Inc. Common Stock | 12,563 | 05 Feb 2026 | By 401-K | ||||||
| holding | OSBC | Restricted Stock Units | 20,552 | 05 Feb 2026 | Direct |