Reg FD Disclosure

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): May 21, 2026     BADGER METER INC (Exact name of Registrant as Specified in Its Charter)     Wisconsin 001-06706 39-0143280 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)           4545 W. Brown Deer Rd.   Milwaukee , Wisconsin   53223 (Address of Principal Executive Offices)   (Zip Code)   Registrant’s Telephone Number, Including Area Code: 414 355-0400     (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   BMI   New York Stock Exchange 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 7.01 Regulation FD Disclosure. The presentation attached hereto as Exhibit 99.1 will be used by Badger Meter, Inc. during its Investor Day on May 21, 2026.   The information set forth herein, including the exhibit attached hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in any such filing.   Item 9.01 Financial Statements and Exhibits. Exhibit No. Description of Exhibit 99.1 Presentation of Badger Meter, Inc. dated May 21, 2026               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.       Badger Meter, Inc.         Date: May 21, 2026 By: /s/ Daniel R. Weltzien       Daniel R. Weltzien Vice President - Chief Financial Officer and Treasurer