Company: OSBC
Filing Date: 2025-05-08
Form Type: 424B3
Source: 0001104659-25-046065
Chunk: 265

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-08
Form: 424B3
Chunk 265
---
 contemplated hereby, and (d) those Liabilities and obligations, if any, set forth in Section 4.8 of the Company Disclosure Memorandum. Neither Company nor any of its Subsidiaries is a party to, or has any commitment to become a party to, any joint venture, off-balance sheet partnership or any similar Contract (including any Contract relating to any transaction or relationship between or among Company and any of its Subsidiaries, on the one hand, and any unconsolidated affiliate, including any structured finance, special purpose or limited purpose entity or person, on the other hand, or any “off-balance sheet arrangement”), where the result, purpose or intended effect of such Contract is to avoid disclosure of any material transaction involving, or material Liabilities of, Company or any of its Subsidiaries in Company’s or such Subsidiary’s financial statements.

<div align='center'>A-12</div>

TABLE OF CONTENTS

4.9

### Brokers and Finders; Opinion of Financial Advisor
. With the exception of the engagement of Keefe, Bruyette & Woods, a Stifel Company (the “ Company Financial Advisor ”), no broker, finder or investment banker has been engaged by Company or any of its Subsidiaries or is entitled to any brokerage, finder’s or other fee or commission in connection with the transactions contemplated by this Agreement or the Bank Merger Agreement based upon arrangements made by or on behalf of Company or any of its Subsidiaries. Section 4.9 of the Company Disclosure Memorandum lists all of the fees and expenses that that are currently owed to the Company Financial Advisor and that will be owed to the Company Financial Advisor as a result of transactions contemplated by this Agreement. Prior to the execution of this Agreement, the Board of Directors of Company has received the opinion of the Company Financial Advisor (which, if initially rendered verbally, will be confirmed in a written opinion, dated the same date on which the opinion was rendered verbally) to the effect that, as of the date of such opinion, the Merger Consideration to be received in the Merger by the holders of Company Common Stock is fair, from a financial point of view, to such holders. A signed copy of such opinion has been or will be furnished to Buyer solely for informational purposes.

4.10

#### Absence of Certain Changes or Events
.

(a) Since December 31, 2023, there has not been any effect, change, event,