Tennant: Departure Of Directors Or Certain Officers; Election Of Directors; Appointment Of Certain Officers; Compensatory Arrangements Of Certain Officers, Financial Statements And Exhibits

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On June 17, 2026, Tennant Company (the “Company”) announced the appointment of Richard H. (Rusty) Zay to the position of Chief Operating Officer (“COO”), effective July 1, 2026. Mr. Zay, age 55, currently serves as the Company’s Senior Vice President, Chief Commercial Officer, a position he has held since March 2021. Mr. Zay joined the Company in June 2010 as Vice President, Global Marketing and was named Senior Vice President, Global Marketing in October 2013 and Senior Vice President of the Americas business unit for the Company in 2014. In 2018, he assumed responsibility for Tennant Research and Development as well. In connection with Mr. Zay’s promotion to COO, the Compensation Committee of the Company’s Board of Directors approved the grant of incremental equity awards to Mr. Zay to recognize his increased responsibilities and to retain and incentivize his continued service. The total value of the awards to Mr. Zay will be $400,000, delivered 50% in the form of restricted stock units and 50% in the form of performance-based restricted stock units, each having the same terms as the annual grants made earlier in 2026 to all executive officers, which awards will be granted when the Company’s quarterly trading window opens. A press release announcing Mr. Zay’s appointment is attached as Exhibit 99. Item 9.01Financial Statements and Exhibits. (d) Exhibits. Exhibit Number Description 99 News Release dated June 17, 2026, announcing COO appointment. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). 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. Tennant Company Date: June 17, 2026 /s/ Kristin A. Erickson Kristin A. Erickson Senior Vice President, Chief Human Resources Officer, General Counsel and Corporate Secretary

Tennant: Departure Of Directors Or Certain Officers; Election Of Directors; Appointment Of Certain Officers; Compensatory Arrangements Of Certain Officers, Financial Statements And Exhibits

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