Company: OSBC
Filing Date: 2025-05-08
Form Type: 424B3
Source: 0001104659-25-046065
Chunk: 234

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-08
Form: 424B3
Chunk 234
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 ​     | ​ | 10.50% | ​ | ​ | ​ | ​                                                                    | $ | 127,686 | ​ | ​ | ​ | ​     | ​ | 10.00% | ​ | ​ |
| Tier 1 Capital (to Risk-Weighted Assets)               | ​ | ​ | ​      | ​ | 168,061 | ​ | ​ | ​ | ​     | ​ | 13.16% | ​ | ​ | ​ | ​                                             | ​ | 108,533 | ​ | ​ | ​ | ​     | ​ | 8.50%  | ​ | ​ | ​ | ​                                                                    | ​ | 102,149 | ​ | ​ | ​ | ​     | ​ | 8.00%  | ​ | ​ |
| Common Equity Tier 1 Capital (to Risk-Weighted Assets) | ​ | ​ | ​      | ​ | 168,061 | ​ | ​ | ​ | ​     | ​ | 13.16% | ​ | ​ | ​ | ​                                             | ​ |  89,380 | ​ | ​ | ​ | ​     | ​ | 7.00%  | ​ | ​ | ​ | ​                                                                    | ​ |  82,996 | ​ | ​ | ​ | ​     | ​ | 6.50%  | ​ | ​ |
| Tier 1 Capital (to Average Assets)                     | ​ | ​ | ​      | ​ | 168,061 | ​ | ​ | ​ | ​     | ​ | 11.38% | ​ | ​ | ​ | ​                                             | ​ |  59,082 | ​ | ​ | ​ | ​     | ​ | 4.00%  | ​ | ​ | ​ | ​                                                                    | ​ |  73,853 | ​ | ​ | ​ | ​     | ​ | 5.00%  | ​ | ​ |

| ​                                                      
 As of December 31, 2023                                | ​ 
 ​ | ​ 
 ​ | Actual 
 Amount |   |         |   | ​ | ​ | Ratio |   |        |   | ​ 
 ​ | ​ 
 ​ | Minimum CapitalRequirement withCapital Buffer 
 Amount                                        |   |         |   | ​ | ​ | Ratio |   |        |   | ​ 
 ​ | ​ 
 ​ | MinimumTo be Well CapitalizedUnder PromptCorrective ActionProvisions 
 Amount                                                               |   |