Company: OSBC
Filing Date: 2025-05-06
Form Type: S-4/A
Source: 0001104659-25-045103
Chunk: 147

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-06
Form: S-4/A
Chunk 147
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 held of record by more than 2,000 holders, (iii) cash instead of fractional shares or (iv) any combination of clauses (i)  – (iii). Appraisal rights are also available under the DGCL in certain other circumstances, including in certain parent-subsidiary corporation mergers and in certain circumstances where the certificate of incorporation so provides. | ​ | ​ | Under Section 262 of the DGCL, a stockholder may dissent from, and receive payments in cash for, the fair value of his or her shares as appraised by the Delaware Court of Chancery in the event of certain mergers and consolidations. However, stockholders do not have appraisal rights if the shares of stock they hold, at the record date for determination of stockholders entitled to vote at the meeting of stockholders to act upon the merger or consolidation, or on the record date with respect to action by written consent, are either (a) listed on a national securities exchange or (b) held of record by more than 2,000 holders. Further, no appraisal rights are available to stockholders of the surviving corporation if the merger did not require the vote of the stockholders of the surviving corporation. Notwithstanding the foregoing, appraisal rights are available if stockholders are required by the terms of the merger agreement to accept for their shares anything other than (i) shares of stock of the surviving corporation, (ii) shares of stock of another corporation that will either be listed on a national securities exchange or held of record by more than 2,000 holders, (iii) cash instead of fractional shares or (iv) any combination of clauses (i) – (iii). Appraisal rights are also available under the DGCL in certain other circumstances, including in certain parent-subsidiary corporation mergers and in certain circumstances where the certificate of incorporation so provides. | ​ |

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TABLE OF CONTENTS

#### INFORMATION ABOUT OLD SECOND BANCORP, INC.
In this section, references to the “Company” or “Old Second” refer to Old Second Bancorp, Inc. and references to “we,” “us,” and “our” mean the combined business of Old Second, Old Second National Bank and its wholly owned subsidiaries.

Old Second Bancorp, Inc. is a corporation organized under the laws of the State of Delaware in 1981 that serves as the bank holding company for its wholly owned subsidiary bank, Old Second National Bank. Old Second National Bank is a national banking association headquartered