Company: OSBC
Filing Date: 2025-04-18
Form Type: DEF 14A
Source: 0001558370-25-005000
Chunk: 1

Company: OLD SECOND BANCORP INC
Filing Date: 2025-04-18
Form: DEF 14A
Chunk 1
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 3. | to adopt an amendment to our Restated Certificate of Incorporation, as amended, to increase our authorized shares of common stock from 60,000,000 shares, par value $1.00 per share, to 120,000,000 shares, par value $1.00 per share. |

| 4. | to approve the Old Second Bancorp, Inc. 2019 Equity Incentive Plan, as Amended and Restated to increase the number of shares of common stock authorized for issuance under the plan by 800,000 shares, from 1,800,000 shares to 2,600,000 shares; |

| 5. | to conduct an advisory, non-binding vote on the frequency of future advisory votes on compensation of our named executive officers; |

| 7. | to transact such other business as may properly be brought before the meeting or any postponements or adjournments of the meeting. |

The board of directors is not aware of any other business to come before the meeting. Stockholders of record at the close of business on March 21, 2025 are the stockholders entitled to vote at the meeting and any and all adjournments or postponements of the meeting. Whether or not you plan to virtually attend the annual meeting, we urge you to vote now to make sure there will be a quorum for the meeting.Voting by the Internet is fast and convenient, and your vote is immediately confirmed and tabulated. You may also vote by completing, signing, dating and returning the accompanying proxy card in the enclosed return envelope furnished for that purpose. If you attend the meeting virtually over the Internet, you may continue to have your shares of common stock voted as instructed in a previously delivered proxy or you may vote your shares of common stock via the Internet during the meeting. Important Notice Regarding Availability of Proxy Materials for the Annual Meeting:Our 2025 proxy statement, proxy card and 2024 Annual Report to Stockholders are available free of charge online at www.oldsecond.com under “2025 Annual Meeting Materials.”

| ​ | ​                                               |
| ​ | By order of the board of directors              |
| ​ |                                                 |
| ​ | James L. Eccher                                 
 Chairman, President and Chief Executive Officer |

Aurora, Illinois April 18, 2025

TABLE OF CONTENTS

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| GENERAL INFORMATION ABOUT THE MEETING AND VOTING                                                                                                                        |  1 |
| PROPOSAL