Company: OSBC
Filing Date: 2025-05-08
Form Type: 424B3
Source: 0001104659-25-046065
Chunk: 206

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-08
Form: 424B3
Chunk 206
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 Amortized Cost |   |             |   | ​ | ​ | Fair Value |   |             |   | ​ |
|:---------------------------------------|:--|:--|:---------------|:--|------------:|:--|:--|:--|:-----------|:--|------------:|:--|:--|
| Due in less than one year              | ​ | ​ | ​              | $ |   2,000,000 | ​ | ​ | ​ | ​          | $ |   1,996,539 | ​ | ​ |
| Due after one year through five years  | ​ | ​ | ​              | ​ |  12,908,385 | ​ | ​ | ​ | ​          | ​ |  12,057,200 | ​ | ​ |
| Due after five through ten years       | ​ | ​ | ​              | ​ |   5,859,218 | ​ | ​ | ​ | ​          | ​ |   5,112,285 | ​ | ​ |
| Due over 10 years                      | ​ | ​ | ​              | ​ |  43,033,618 | ​ | ​ | ​ | ​          | ​ |  38,941,337 | ​ | ​ |
| Residential mortgage-backed securities | ​ | ​ | ​              | ​ |  72,103,221 | ​ | ​ | ​ | ​          | ​ |  65,421,885 | ​ | ​ |
| ​                                      | ​ | ​ | ​              | $ | 135,904,442 | ​ | ​ | ​ | ​          | $ | 123,529,246 | ​ | ​ |

Securities available for sale with a carrying amount of approximately $71,522,000 and $54,723,000 at December 31, 2024 and 2023, respectively, were pledged as collateral on public deposits and for other purposes as required or permitted by law. Gross realized gains and gross realized losses on sales of securities available for sale are as follows:

| ​                     
 ​                     | ​ 
 ​ | ​ 
 ​ | Years ended December 31, 
 2024                     |   |         |   | ​ | ​ | 2023 |   |         |   | ​ 
 ​ |
|:----------------------|:--|:--|:-------------------------|:--|--------:|:--|:--|:--|:-----|