Company: OSBC
Filing Date: 2025-04-23
Form Type: S-4
Source: 0001104659-25-037832
Chunk: 8

Company: OLD SECOND BANCORP INC
Filing Date: 2025-04-23
Form: S-4
Chunk 8
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 Old Second, constitutes a prospectus of Old Second under Section 5 of the Securities Act of 1933, as amended, which we refer to as the “Securities Act,” with respect to the shares of Old Second common stock to be offered to Bancorp Financial stockholders in connection with the merger. This proxy statement/ prospectus also constitutes a notice of meeting and proxy statement for the Bancorp Financial special meeting of stockholders.

No one has been authorized to provide you with information that is different from that contained in, or incorporated by reference into, this proxy statement/prospectus. This proxy statement/prospectus is dated [•], 2025, and you should assume that the information in this document is accurate only as of such date. You should assume that the information incorporated by reference into this document is accurate as of the date of such incorporated document. Neither the mailing of this proxy statement/prospectus to holders of Bancorp Financial common stock nor the issuance by Old Second of shares of Old Second common stock in connection with the merger will create any implication to the contrary.

This proxy statement/prospectus does not constitute an offer to sell, or a solicitation of an offer to buy, any securities, or the solicitation of a proxy, in any jurisdiction to or from any person to whom it is unlawful to make any such offer or solicitation in such jurisdiction. Except where the context otherwise indicates, information contained in, or incorporated by reference into, this document regarding Old Second has been provided by Old Second and information contained in this document regarding Bancorp Financial has been provided by Bancorp Financial.

All references in this proxy statement/prospectus to “Old Second” refer to Old Second Bancorp, Inc., a Delaware corporation. All references in this proxy statement/prospectus to “Bancorp Financial” refer to Bancorp Financial, Inc., a Delaware corporation.

All references in this proxy statement/prospectus to the “combined company” or the “surviving corporation” refer to Old Second immediately following completion of the merger, and references to the “combined bank” or the “surviving bank” refer to Old Second National Bank following completion of the bank merger.

All references in this proxy statement/prospectus to “Old Second common stock” refer to the common stock of Old Second, par value $1.00 per share, and all references in this proxy statement/prospectus to “Bancorp Financial common stock” refer to the common stock of Bancorp Financial, par value $1.00