Company: OSBC
Filing Date: 2025-05-08
Form Type: 424B3
Source: 0001104659-25-046065
Chunk: 389

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-08
Form: 424B3
Chunk 389
---
 providing services or receiving compensation from, either directly or indirectly. The Company agrees to use such list only in connection with enforcing the Executive’s agreements with the Company or the Bank.

12.

#### No Disparagement.
The Executive agrees that so long as the Executive is employed or in service with the Company, and at any time thereafter, Executive shall not disparage the Company or its business to any Customer or prospective Customer of the Company or publicly disparage the Company or intentionally bring or attempt to bring the Company into disrepute.

13.

#### Notice to Future Employers
. For the period of twenty-four (24) months immediately following the end of the Executive’s employment and service with the Company, the Executive will inform each new employer or service recipient, prior to accepting employment or engagement, of the existence of this Agreement and provide that employer or service recipient with a copy of this Agreement. The Executive further agrees that Company may, if it so desires, send a copy of this Agreement to, or otherwise make the provisions hereof known to, any such employer or service recipient.

14.

#### Return of Property.
Upon termination of employment and service with the Company for any reason, or upon earlier written request by the Company, the Executive shall return to the Company all keys,

<div align='center'>C-1-5</div>

TABLE OF CONTENTS

telephone calling cards, cellular telephones, computers, printers, access cards and other Company property and equipment; and all originals and all copies of all business records and other documents, including Confidential Information (including information stored on computer hard drives, flash or thumb drives, or any other medium), relating to the Company in the Executive’s possession, custody or control, other than documents relating solely to the Executive’s own compensation or benefits. Executive agrees to refrain from accessing any Company records or other documents stored on any personal computer hard drive, tablet, smartphone, electronic data storage device, email or other web-based data storage account or service after termination of employment and service with the Company and shall inform the Company of all such media, and shall permanently delete and erase any Company records and other documents stored on such media.

15.

#### Reasonableness of Restrictions and Remedies.
The Executive agrees that the terms of Sections 6 through 14 of this Agreement are intended to protect and preserve legitimate business interests of the Company and are reasonable and necessary. It is further agreed that any breach of Sections 6 through 14 of this Agreement may render irreparable harm to the Company. In the event of a breach