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ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-15817 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K Indiana ( State or other jurisdiction of incorporation or organization ) Title of each class Common Stock , No Par Value OLD NATIONAL BANCORP ( Exact name of the Registrant as specified in its charter ) One Main Street Evansville , Indiana ( Address of principal executive offices ) Non - accelerated filer Emerging growth company ( 800 ) 731-2265 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) ONB ( I.R.S. Employer Identification No. ) 35-1539838 Securities registered pursuant to Section 12 ( g ) of the Act : None 47708 ( Zip Code ) Name of each exchange on which registered The NASDAQ Stock Market LLC Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes No Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit : files ) . Yes No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , ” and “ emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer Accelerated filer Smaller reporting company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . 0 Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Indicate by check ma whether the registrant is a shell company ( as def in Rule 12b - 2 of the Act ) . Yes No The aggregate market value of the registrant's voting common stock held by non - affiliates on June 30 , 2020 , was $ 2,248,155,309 ( based on the closing price on that date of $ 13.76 ) . In calculating the market value of securities held by non - affiliates of the registrant , the registrant has treated as securities held by affiliates as of June 30 , 2020 , voting stock owned of record by its directors and principal executive officers , and voting stock held by the registrant's trust department in a fiduciary capacity for benefit of its directors and principal executive officers . This calculation does not reflect a determination that persons are affiliates for any other purposes . The number of shares outstanding of the registrant's common stock , as of January 31 , 2021 , was 165,378,000 . DOCUMENTS INCORPORATED BY REFERENCE Portions of the Proxy Statement for the Annual Meeting of Shareholders to be held April 29 , 2021 are incorporated by reference into Part III of this Form 10 - K .