Company: OSBC
Filing Date: 2025-05-08
Form Type: 424B3
Source: 0001104659-25-046065
Chunk: 82

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-08
Form: 424B3
Chunk 82
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 ​ | ​ | Acquired Company                       | ​ |
| Cadence Bank                       | ​ | ​ | FCB Financial Corp.                    | ​ |
| Glacier Bancorp, Inc.              | ​ | ​ | Bank of Idaho Holding Company          | ​ |
| CNB Financial Corporation          | ​ | ​ | ESSA Bancorp, Inc.                     | ​ |
| Mid Penn Bancorp, Inc.             | ​ | ​ | William Penn Bancorporation            | ​ |
| TowneBank                          | ​ | ​ | Village Bank and Trust Financial Corp. | ​ |
| NBT Bancorp Inc.                   | ​ | ​ | Evans Bancorp, Inc.                    | ​ |
| ChoiceOne Financial Services, Inc. | ​ | ​ | Fentura Financial, Inc.                | ​ |
| CBC Bancorp                        | ​ | ​ | Bay Community Bancorp                  | ​ |
| Alerus Financial Corporation       | ​ | ​ | HMN Financial, Inc.                    | ​ |
| Southern California Bancorp        | ​ | ​ | California BanCorp                     | ​ |
| Global Federal Credit Union        | ​ | ​ | First Financial Northwest Bank         | ​ |
| Orrstown Financial Services, Inc.  | ​ | ​ | Codorus Valley Bancorp, Inc.           | ​ |
| Central Valley Community Bancorp   | ​ | ​ | Community West Bancshares              | ​ |
| Peoples Financial Services Corp.   | ​ | ​ | FNCB Bancorp, Inc.                     | ​ |
| LINKBANCORP, Inc.                  | ​ | ​ | Partners Bancorp                       | ​ |
| United Community Banks, Inc.       | ​ | ​ | First Miami Bancorp, Inc.              | ​ |

For each selected transaction, KBW derived the following implied transaction statistics, in each case based on the transaction consideration value paid for the acquired company and using financial data to the extent publicly available based on the acquired company’s then latest publicly available financial statements prior to the announcement of the respective transaction: • Price per common share to tangible book value per share of the acquired company (in the case of selected transactions involving a private acquired company, this transaction statistic was calculated as total transaction consideration divided by total tangible common equity);

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TABLE OF CONTENTS

• Pay to Trade ratio (calculated as the price to tangible book value multiple paid in the respective transaction divided by the acquiror’s standalone closing stock price to tangible book value multiple) in the 14 selected transactions in