Company Update

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549   FORM 8-K   CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 11, 2025     CVB Financial Corp. (Exact name of Registrant as Specified in Its Charter)     California 000-10140 95-3629339 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)           701 N HAVEN AVE STE 350   ONTARIO , California   91764 (Address of Principal Executive Offices)   (Zip Code)   Registrant’s Telephone Number, Including Area Code: 909 980-4030   Not Applicable (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   CVBF   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 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐   Item 8.01 Other Events. CVB Financial Corp., the parent company of Citizens Business Bank ("CBB"), today reports that the federal Office of the Comptroller of the Currency has approved CBB's application to convert from a California-chartered bank to a national banking association.   CBB's conversion to a national banking association will be effective on December 15, 2025, at which time CBB's legal name will change to "Citizens Business Bank, National Association." SIGNATURES 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.       CVB FINANCIAL CORP.         Date: December 11, 2025 By: /s/ E. Allen Nicholson       E. Allen Nicholson Executive Vice President and Chief Financial Officer