Company: OSBC
Filing Date: 2025-05-06
Form Type: S-4/A
Source: 0001104659-25-045103
Chunk: 149

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-06
Form: S-4/A
Chunk 149
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 range of wealth management, investment, agency, and custodial services for individual, corporate, and not-for-profit clients. These services include the administration of estates and personal trusts, as well as the management of investment accounts for individuals, employee benefit plans, and charitable foundations. We also originate residential mortgages, offering a wide range of mortgage products including conventional, government, and jumbo loans. We also handle secondary marketing of those mortgages.

Old Second is headquartered at 37 South River Street, Aurora, Illinois 60507. More information about Old Second is available by visiting the “Investor Relations” tab of its website at www.oldsecond.com. Information contained on Old Second’s website does not constitute part of, and is not incorporated into, this proxy statement/prospectus. For a complete description of Old Second’s business, financial condition, results of operations and other important information, please refer to Old Second’s filings with the SEC that are incorporated by reference in this document, including its Annual Report on Form 10-K for the year ended December 31, 2024. For instructions on how to find copies of these documents, see “Where You Can Find More Information” in the forepart of this proxy statement/prospectus.

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#### INFORMATION ABOUT BANCORP FINANCIAL, INC.
In this section, references to the “Company” or “Bancorp Financial” refer to Bancorp Financial, Inc. and references to “we,” “us,” and “our” mean the combined business of Bancorp Financial, Evergreen Bank Group and its wholly-owned subsidiaries.

Bancorp Financial, Inc., a Delaware corporation, was founded in 2006 and is headquartered in Oak Brook, Illinois. Bancorp Financial operates as the bank holding company for Evergreen Bank Group, an Illinois state-chartered bank with three banking locations in the Chicago, Illinois suburbs of Evergreen Park, Oak Brook and Hinsdale, and one loan production office in Reno, Nevada. At December 31, 2024, Bancorp Financial had total assets of $1.45 billion, gross loans of $1.21 billion, total deposits of $1.24 billion and total stockholders’ equity of $149.9 million.

Evergreen Bank Group is a full-service community bank offering a broad range of loan, deposit and treasury management products and services. Our commercial and consumer lending business includes our national powersport lending divisions, FreedomRoad Financial and Performance Finance. Performance Finance is