Shareholder Vote

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC  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):  August 21, 2025 Modine Manufacturing Company (Exact name of registrant as specified in its charter) ​ ​ Wisconsin ​ 001-01373 ​ 39-0482000 (State or other jurisdiction of incorporation) ​ (Commission File Number) ​ (I.R.S. Employer Identification Number) ​ 1500 DeKoven Avenue ,  Racine ,  Wisconsin   53403 (Address of principal executive offices)   (Zip Code) ​ Registrant’s telephone number, including area code:   ( 262 )  636-1200       (Former name or former address, if changed since last report.)   N/A ​ 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, $0.625 par value ​ MOD ​ 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. ☐ ​ ​ ​ INFORMATION TO BE INCLUDED IN THE REPORT Item 5.07 Submission of Matters to a Vote of Security Holders Election of Directors On August 21, 2025, the shareholders of Modine Manufacturing Company voted to elect Neil D. Brinker, Katherine C. Harper, David J. Wilson, and Mark Bendza to serve as directors until the 2028 Annual Meeting of Shareholders and until their successors are duly elected and qualified. The results of the vote were as follows: Director For Against Abstain Broker Non-Votes Neil D. Brinker 45,820,050 771,251 31,276 2,224,542 Katherine C. Harper 44,510,483 2,079,773 32,321 2,224,542 David J. Wilson 42,659,121 3,930,255 33,201 2,224,542 Mark Bendza 46,141,667 447,167 33,743 2,224,542 ​ Approval of Advisory Vote on Named Executive Officer Compensation (Say on Pay) The shareholders approved the advisory vote on named executive officer compensation. The results of the vote were as follows: For Against Abstain Broker Non-Votes 44,940,714 1,542,927 138,936 2,224,542 ​ Ratification of Independent Registered Public Accounting Firm The shareholders ratified the appointment of KPMG as the Company’s independent registered public accounting firm. The results of the vote were as follows: For Against Abstain 48,659,379 133,266 54,474 ​ ​ ​ ​ 2 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. Modine Manufacturing Company       By: /s/ Erin J. Roth   Erin J. Roth   Vice President, General Counsel and Chief Compliance Officer     Date:  August 22, 2025   ​ ​ ​ 3