UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): ~~October~~November 227, 2025

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OLD NATIONAL BANCORP

(Exact name of Registrant as specified in its charter)

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Indiana	001-15817	35-1539838
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)


One Main Street
Evansville,	Indiana	47708
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s telephone number, including area code: (773) 765-7675

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(Former name or former address if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading

Symbol(s)

Name of each exchange on which registered

Common stock, no par value

ONB

The NASDAQ Stock Market LLC

Depositary Shares, each representing a 1/40th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series A

ONBPP

The NASDAQ Stock Market LLC

Depositary Shares, each representing a 1/40th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series C

ONBPO

The NASDAQ Stock Market LLC

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (s230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (s240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the Registrant has elected not to use extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 27.0201 ~~Results~~Regulation ofFD ~~Operations and Financial Condition~~Disclosure.

OnThe ~~October 22,~~executive ~~2025,~~officers of Old National Bancorp (intend to use the ~~“Company”)~~materials ~~issued~~filed aherewith, ~~press~~in ~~release~~whole ~~(“Press~~or ~~Release”)~~in ~~reporting~~part, ~~its~~in ~~financial~~one ~~results~~or ~~for~~more ~~the~~meetings ~~third~~with ~~quarter~~investors ofand ~~2025~~analysts. ~~The~~A ~~Press~~copy ~~Release~~of the investor presentation is ~~furnished~~attached hereto as Exhibit 99.1 ~~hereto and is incorporated herein by reference~~. AOld ~~slide~~National ~~presentation~~Bancorp ~~outlining~~does ~~third~~not ~~quarter~~intend offor ~~2025~~this ~~earnings,~~Item ~~strategic~~7.01 ~~developments,~~or ~~and~~Exhibit ~~the~~99.1 ~~Company’s~~to ~~financial outlook will~~ be ~~available~~treated onas ~~the~~ “~~Investor Relations~~filed” ~~section~~for purposes of the ~~Company’s~~Securities ~~website~~Exchange toAct ~~complement~~of ~~the~~1934, ~~conference~~as ~~call to be held on October 22~~amended, ~~2025,~~or atincorporated ~~9:00~~by ~~a.m.~~reference ~~CDT~~into ~~and~~its ~~will~~filings beunder ~~accessible~~the atSecurities ~~http://www.oldnational.com~~Act ~~immediately~~of ~~before~~1933, ~~the~~as ~~conference call begins~~amended.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No. Description

99.1 ~~Press Release issued by~~ Old National Bancorp onInvestment ~~October 22, 2025~~Thesis.

104 Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: ~~October 22~~November 7, 2025

OLD NATIONAL BANCORP

By: /s/ Nicholas J. Chulos

Nicholas J. Chulos

Executive Vice President,

Chief Legal Officer and Corporate Secretary

Filing Compare · OLD NATIONAL BANCORP /IN/