Company: ONBPP
Filing Date: 2025-04-04
Form Type: DEFA14A
Source: 0001558370-25-004484
Chunk: 0

Company: OLD NATIONAL BANCORP /IN/
Filing Date: 2025-04-04
Form: DEFA14A
Chunk 0
---
<div align='center'>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</div>

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 NATIONAL BANCORP
<div align='center'>(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)</div>

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 14a-6(i)(1) and 0-11.

| Smartphone users                                                                                                                      
 Point your camera here and                                                                                                            
 vote without entering a                                                                                                               
 control number                                                                                                                        
 For complete information and to vote, visit www.ProxyVote.com                                                                         
 Control #                                                                                                                             
 V67707-P28170                                                                                                                         
 Your Vote Counts!                                                                                                                     
 OLD NATIONAL BANCORP                                                                                                                  
 You invested in OLD NATIONAL BANCORP and it’s time to vote!                                                                           
 You have the right to vote on proposals being presented at Old National Bancorp’s 2025 Annual Meeting of Shareholders. This is an     
 important notice regarding the availability of proxy materials for the 2025 Annual Meeting of Shareholders to be held on              
 May 14, 2025.                                                                                                                         
 Vote Virtually During the                                                                                                             
 Meeting*                                                                                                                              
 May 14, 2025                                                                                                                          
 10:00 AM CT                                                                                                                           
 Virtually at:                                                                                                                         
 www.virtualshareholdermeeting.com/ONB2025                                                                                             
 *Please check the meeting materials for any special requirements for meeting attendance.                                              
 Get informed before you vote                                                                                                          
 View Old National Bancorp’s Annual Report on Form 10-K, Notice of 2025 Annual Meeting of Shareholders and Proxy Statement             
 online OR you can receive a free paper or email