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Commitments and Contingencies | 9 Months Ended
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Sep. 30, 2025
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and Contingencies In the ordinary course of business, we are subject to the effects of certain contractual stipulations, events, transactions, and laws and regulations that may, at times, require the recognition of liabilities, such as those related to self-insurance estimated liabilities and claims, legal and contractual issues, environmental laws and regulations, guarantees, and indemnities. We establish estimated liabilities when the associated costs related to uncertainties or guarantees become probable and can be reasonably estimated. Oxygenator Water Techs vs. Tennant Company On November 25, 2024, the Company received an adverse jury verdict in an intellectual property damages dispute in the United States District Court for the District of Minnesota (Court). Oxygenator Water Technologies, Inc. (OWT) alleged that between 2015 and 2023, the Company infringed certain of OWT’s patents through the manufacture and sale of certain component parts in ecH2O and nanoclean system options included on commercial floor scrubbers. The jury ruled against the Company and awarded compensatory damages of $9.8 million, plus prejudgment interest of $4.7 million, in favor of OWT. Accordingly, in the fourth quarter of 2024, the Company recorded an accrued expense and a corresponding liability of $14.5 million. Subsequently, on September 17, 2025, the Court issued a post-trial ruling enhancing damages by 30%, resulting in total damages and interest of approximately $20.2 million, including $9.8 million in compensatory damages, $2.9 million in enhanced damages, and $7.4 million in prejudgment interest. As a result, the Company recorded an incremental accrued expense and corresponding liability of $5.3 million in the third quarter of 2025. As litigation outcomes are inherently uncertain and can result in unanticipated developments, it is possible that the Company’s exposure to loss could change following the issuance of these financial statements. The Company intends to vigorously defend its position and is assessing next steps in the proceedings. The ruling does not impact the Company’s ability to sell its products and is not expected to affect its long-term business objectives. Except as described above, there have been no material changes in the Company’s estimated liabilities for self-insurance, litigation, environmental matters, guarantees, or indemnities, or in the related events and circumstances.

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