Company: OSBC
Filing Date: 2025-04-23
Form Type: S-4
Source: 0001104659-25-037832
Chunk: 137

Company: OLD SECOND BANCORP INC
Filing Date: 2025-04-23
Form: S-4
Chunk 137
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 Determination: The Delaware Court of Chancery will determine the fair value of your shares, which may result in a value that is higher, lower, or the same as the merger consideration.

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Legal Counsel Recommended: Given the complexity of the appraisal process and the need for strict compliance with statutory procedures, stockholders considering exercising appraisal rights are strongly encouraged to consult with their legal advisors.

All written demands for appraisal should be addressed to:

Bancorp Financial, Inc. 
 1515 West 22 nd Street, Suite 100W 
 Oak Brook, Illinois 60523 
 Attention: Corporate Secretary 
 (630) 413-9580

It is advisable to send such demands by registered or certified mail, with return receipt requested.

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### DESCRIPTION OF OLD SECOND CAPITAL STOCK
As a result of the merger, Bancorp Financial stockholders who receive shares of Old Second common stock in the merger will become Old Second stockholders. Your rights as Old Second stockholders will be governed by Delaware law and the Old Second certificate of incorporation and the Old Second bylaws. The following provides a description of the material terms of Old Second capital stock, including the Old Second common stock to be issued in connection with the merger, and reflects the anticipated state of affairs upon completion of the merger. We urge you to read the applicable provisions of Delaware law, the Old Second certificate of incorporation and the Old Second bylaws and federal law governing bank holding companies carefully and in their entirety because they describe your rights as a holder of Old Second common stock.

#### Authorized Shares of Capital Stock
The Old Second certificate of incorporation, which we refer to as the “Old Second charter,” currently authorizes Old Second to issue up to 60,000,000 shares of common stock, $1.00 par value per share, and 300,000 shares of preferred stock, $1.00 par value per share.

#### Common Stock

#### General
. The Old Second charter provides that we may issue up to 60,000,000 shares of common stock, $1.00 par value per share. As of March 31, 2025, Old Second had 45,047,151 shares of common stock issued and outstanding. All outstanding shares of Old Second common stock are fully paid and nonassessable.

Old Second common stock is listed on the NASDAQ Global Select Market under the symbol “OSBC.”

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