TENNANT CO

Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and our Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures as of September 30, 2025 (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the “Exchange Act”)). Based on that evaluation, our Chief Executive Officer and our Chief Financial Officer have concluded that our disclosure controls and procedures are effective to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our principal executive and our principal financial officers, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Controls

During 2023, we began a multi-year implementation of our new global ERP system, designed to modernize our operating and transactional financial systems.

In the third quarter of 2025, we completed the initial go-live phase of the ERP system in our APAC region. As part of this deployment, we modified certain existing internal controls over financial reporting and implemented new controls and procedures to reflect changes in our financial reporting processes and systems.

While we expect the ERP system to enhance our internal control environment by automating manual processes and standardizing business and reporting practices across the organization, management continues to evaluate and monitor the design and operating effectiveness of internal controls as each region transitions to the new system.

Except for the changes described above, there were no other changes in our internal control over financial reporting during the fiscal quarter ended September 30, 2025 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.