Company: OSBC
Filing Date: 2025-05-08
Form Type: 424B3
Source: 0001104659-25-046065
Chunk: 36

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-08
Form: 424B3
Chunk 36
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 126. For a discussion of Bancorp Financial’s business and related considerations, see “Information About Bancorp Financial, Inc.” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations of Bancorp Financial” beginning on pages 103 and 104, respectively.

Old Second stockholders and Bancorp Financial stockholders will each have reduced ownership and voting interest in and will exercise less influence over management of the combined company.

Old Second stockholders currently have the right to vote in the election of the Old Second board of directors and on other matters affecting Old Second, and Bancorp Financial common stockholders currently have the right to vote in the election of the Bancorp Financial board of directors and on other matters affecting Bancorp Financial. When the merger occurs, each Bancorp Financial stockholder will become a stockholder of Old Second, and each Bancorp Financial stockholder and Old Second stockholder will have a percentage ownership in the combined company that is smaller than the stockholder’s percentage ownership of either Bancorp Financial or Old Second individually. Based on the number of shares of Bancorp Financial common stock outstanding at the close of business on the record date of May 6, 2025, and based on the number of shares of Old Second common stock expected to be issued in the merger, the former holders of Bancorp Financial common stock as a group will receive shares in the merger constituting approximately 15.2% of the outstanding shares of Old Second common stock immediately after the merger. As a result, current stockholders of Old Second as a group will own approximately 84.8% of the outstanding shares of Old Second common stock immediately after the merger. Because of this, each Bancorp Financial stockholder and Old Second stockholder will have less influence on the management and policies of the combined company than each now has on the management and policies of Bancorp Financial or Old Second individually.

Regulatory approvals may not be received, may take longer than expected or may impose conditions that are not presently anticipated or that could have an adverse effect on the combined company following the merger.

Before the merger and the bank merger may be completed, various approvals, consents and non-objections must be obtained from the Federal Reserve Board, the OCC and other regulatory authorities. In determining whether to grant these approvals, the regulators consider a variety of factors, including the regulatory standing of each party and the factors described under “The Merger — Regulatory Approvals

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TABLE OF CONTENTS

Required for the Merger”