Old Second Bancorp Files Definitive Proxy Statement

TL;DR

OSBC filed proxy docs for 2024 year-end. Shareholders vote soon.

AI Summary

Old Second Bancorp Inc. filed a Definitive Proxy Statement (DEFA14A) on April 6, 2026, related to its fiscal year ending December 31, 2024. The filing includes additional definitive proxy soliciting materials. The company's principal executive offices are located at 37 South River Street, Aurora, IL 60507.

Why It Matters

This filing provides shareholders with important information regarding the company's governance and any proposals to be voted on at upcoming shareholder meetings, impacting their investment decisions.

Risk Assessment

Risk Level: low — This is a routine regulatory filing (DEFA14A) and does not inherently indicate new risks.

Key Numbers

• 2026-04-06 — Filing Date (Date the DEFA14A was filed with the SEC.)
• 1231 — Fiscal Year End (Indicates the end of the fiscal year for which the proxy materials are relevant.)

Key Players & Entities

• OLD SECOND BANCORP INC (company) — Filer of the DEFA14A
• 0000357173 (company) — CIK number for Old Second Bancorp Inc.
• 37 SOUTH RIVER STREET AURORA IL 60507 (company) — Mailing and Business Address for Old Second Bancorp Inc.

FAQ

Filing Documents

• osbc-20241231xdefa14a.htm (DEFA14A) — 15KB
• osbc-20241231xdefa14a_bg001.jpg (GRAPHIC) — 145KB
• osbc-20241231xdefa14a_bg002.jpg (GRAPHIC) — 103KB
• 0001104659-26-039830.txt ( ) — 350KB

From the Filing

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: Preliminary Proxy Statement Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definitive Proxy Statement Definitive Additional Materials Soliciting Material under 240.14a-12 Old Second Bancorp, Inc. (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): No fee required. Fee paid previously with preliminary materials. Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(I)(1) and 0-11 Your Vote Counts! OLD SECOND BANCORP, INC. ATTN: SHIRLEY CANTRELL 37 SOUTH RIVER STREET AURORA, IL 60506-4172 OLD SECOND BANCORP, INC. 2026 Annual Meeting Vote by May 18, 2026 11:59 P.M. ET You invested in OLD SECOND BANCORP, INC. and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the stockholder meeting to be held on May 19, 2026. Vote Virtually at the Meeting* May 19, 2026 9:00 a.m. Central Time Virtually at: www.virtualshareholdermeeting.com/OSBC2026 *Please check the meeting materials for any special requirements for meeting attendance. Smartphone users Point your camera here and vote without entering a control number For complete information and to vote, visit www.ProxyVote.com Control # V86998-P49317 Get informed before you vote View the Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 5, 2026. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Vote at www.ProxyVote.com Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Delivery Settings”. Voting Items Board Recommends V86999-P49317 1. Proposal to elect four Class I director nominees to serve for a term expiring in 2029: Nominees: 1a. Darin Campbell For 1b. Billy J. Lyons, Jr. For 1c. Patti Temple Rocks For 1d. John Williams, Jr. For 2. Proposal to approve on a non-binding, advisory basis, the compensation of the Company’s named executive officers, as described in the Company’s Proxy Statement. For 3. Proposal to ratify the appointment of Plante & Moran, PLLC as the Company’s independent registered public accountants for the fiscal year ending December 31, 2026. For NOTE: Such other business as may properly come before the meeting or any adjournment thereof.

View Full Filing

View this DEFA14A filing on SEC EDGAR