Company: OSBC
Filing Date: 2025-04-01
Form Type: PRE 14A
Source: 0001558370-25-004277
Chunk: 9

Company: OLD SECOND BANCORP INC
Filing Date: 2025-04-01
Form: PRE 14A
Chunk 9
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 above Class III director nominees. Set forth below is information concerning our other directors, whose term of office will continue after the annual meeting, including their age and year first elected or appointed as a director. Continuing Directors

| ​                            | ​ |   ​ | ​ |                        ​ |
| Name                         | ​ | Age | ​ | Served as Director Since |
| Class I (term expires 2026)  | ​ |   ​ | ​ |                        ​ |
| John Ladowicz                | ​ |  72 | ​ |                     2008 |
| Billy J. Lyons, Jr.          | ​ |  64 | ​ |                     2020 |
| Patti Temple Rocks           | ​ |  65 | ​ |                     2015 |
| John Williams, Jr.           | ​ |  71 | ​ |                     2021 |
| ​                            | ​ |   ​ | ​ |                        ​ |
| Class II (term expires 2027) | ​ |   ​ | ​ |                        ​ |
| James Eccher                 | ​ |  59 | ​ |                     2006 |
| Barry Finn                   | ​ |  65 | ​ |                     2004 |
| Dennis Klaeser               | ​ |  67 | ​ |                     2021 |
| Hugh McLean                  | ​ |  66 | ​ |                     2018 |

**All directors will hold office for the terms indicated, or until their earlier death, resignation, removal or disqualification and until their respective successors are duly elected and qualified. There are no arrangements or understandings between any of the nominees, directors or executive officers and any other person pursuant to which any of our nominees, directors or executive officers have been selected for their respective positions. No nominee, member of the board of directors or executive officer is related to any other nominee, member of the board of directors or executive officer.

6

Director Experience**

Biographical information regarding each of our director nominees and continuing directors is set forth below, including the particular experience, qualifications, attributes or skills that led the board to conclude that each member is qualified to serve on the board and any committee he or she serves.

Mr. Bonifas: Mr. Bonifas is the Executive Vice President of Alarm Detection Systems, Inc., a producer and installer of alarm systems, closed circuit video systems and card access control systems, a position he has held since 2000. We consider Mr. Bonifas to be qualified