NEWMARKET CORP 10-Q

ITEM 4. Controls and Procedures Evaluation of Disclosure Controls and Procedures We maintain a system of internal control over financial reporting to provide reasonable, but not absolute, assurance of the reliability of the financial records and the protection of assets. Under Rule 13a-15(b) of the Securities Exchange Act of 1934 (the Exchange Act), we carried out an evaluation, with the participation of our management, including our principal executive officer and our principal financial officer, of the effectiveness of our disclosure controls and procedures, as such term is defined in Rule 13a-15(e) of the Exchange Act, as of the end of the period covered by this report. Based upon that evaluation, our principal executive officer and our principal financial officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level. There has been no change in our internal control over financial reporting, as such term is defined in Rule 13a-15(f) of the Exchange Act, which occurred during the quarter ended June 30, 2025 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting. 25 Table of Contents PART II. OTHER INFORMATION ITEM 1. Legal Proceedings There have been no material changes to our legal proceedings as disclosed in "Legal Proceedings" in Item 3 of Part I of the 2024 Annual Report.