Company: OSBC
Filing Date: 2025-05-08
Form Type: 424B3
Source: 0001104659-25-046065
Chunk: 239

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-08
Form: 424B3
Chunk 239
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 included in the table below:

| ​                                            
 ​                                            | ​ 
 ​ | ​ 
 ​ | Fair Value Measurements at December 31, 2024 Using 
 December 31,2024                                   |   |            |   | ​ | ​ | Quoted Prices inActive Markets forIdentical Assets(Level 1) |   |   |   | ​ | ​ | Significant OtherObservableInputs(Level 2) |   |   |   | ​ | ​ | Significant OtherUnobservableInputs(Level 3) |   |            |   | ​ 
 ​ |
|:---------------------------------------------|:--|:--|:---------------------------------------------------|:--|-----------:|:--|:--|:--|:------------------------------------------------------------|:--|:--|:--|:--|:--|:-------------------------------------------|:--|:--|:--|:--|:--|:---------------------------------------------|:--|-----------:|:--|:--|
| Assets:                                      | ​ | ​ | ​                                                  | ​ |          ​ | ​ | ​ | ​ | ​                                                           | ​ | ​ | ​ | ​ | ​ | ​                                          | ​ | ​ | ​ | ​ | ​ | ​                                            | ​ |          ​ | ​ | ​ |
| Loans individually evaluated for credit loss | ​ | ​ | ​                                                  | $ | 13,754,065 | ​ | ​ | ​ | ​                                                           | $ | — | ​ | ​ | ​ | ​                                          | $ | — | ​ | ​ | ​ | ​                                            | $ | 13,754,065 | ​ | ​ |
| Repossessed assets                           | ​ | ​ | ​                                                  | ​ |    680,428 | ​ | ​ | ​ | ​                                                           | ​ | — | ​ | ​ | ​ | ​                                          | ​ | — | ​ | ​ | ​ | ​                                            | ​ |    680,428 | ​ | ​ |

F-35

TABLE OF CONTENTS

Bancorp Financial, Inc. and Subsidiary Notes to Consolidated Financial Statements Note 13. Fair Value Measurements (continued)

| ​                                            
 ​                                            | ​ 
 ​ | ​ 
 ​ | Fair Value Measurements at December 31, 2023 Using 
 December 31,2023                                   |   |            |   | ​ | ​ | Quoted Prices inActive Markets forIdentical Assets(Level 1) |   |   |   | ​ | ​ | Significant OtherObservableInputs