Company: OSBC
Filing Date: 2025-04-01
Form Type: PRE 14A
Source: 0001558370-25-004277
Chunk: 105

Company: OLD SECOND BANCORP INC
Filing Date: 2025-04-01
Form: PRE 14A
Chunk 105
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, we will reimburse brokerage houses and other custodians, nominees or fiduciaries for their reasonable expenses in forwarding proxy materials to the beneficial owner of such shares. As of the date of this proxy statement, we do not know of any other matters to be brought before the annual meeting. However, if any other matters should properly come before the meeting, it is the intention of the persons named in the enclosed proxy to vote thereon in accordance with their best judgment.

| ​                              | ​                                               |
| ​                              | By order of the board of directors              |
| ​                              |                                                 |
| ​                              | James L. Eccher                                 
 Chairman, President and Chief Executive Officer |
| Aurora, IllinoisApril 18, 2025 | ​                                               |

69

<div align='center'>Appendix A

Marked Version of Certificate of Incorporation Showing Proposed Amendments

ARTICLE IV

AUTHORIZED STOCK</div>

A. The total number of shares of all classes of stock which the Corporation shall have authority to issue is60,300,000120,300,000shares, which are divided into two classes:

60,000,000120,000,000shares of common stock, with a par value of $1.00 per share; and

300,000 shares of preferred stock, with a par value of $1.00 per share.

<div align='center'>70

Appendix B

CERTIFICATE OF AMENDMENT

TO THE

RESTATED CERTIFICATE OF INCORPORATION

OF

OLD SECOND BANCORP, INC.

(Pursuant to 8 Del. C. Section 242)</div>

Old Second Bancorp, Inc., a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware, DOES HEREBY CERTIFY that:

The name of the Corporation is:  Old Second Bancorp, Inc.

The Certificate of Incorporation of the Corporation is hereby amended by striking out Paragraph A of Article IV thereof in its entirety and by substituting in lieu of the former Paragraph A of Article IV the following:

“A. The total number of shares of all classes of stock which the Corporation shall have authority to issue is 120,300,000 shares, which are divided into two classes:

120,000,000 shares of common stock, with a par value of $1.00 per share; and

300,000 shares of preferred stock, with a par value of $1.00 per share.”

The said amendment was submitted to the stockholders