AMERICAN VANGUARD CORP

Evaluation of Disclosure Controls and Procedures

As of September 30, 2026, the Company has a comprehensive set of disclosure controls and procedures designed to ensure that all information required to be disclosed in our filings under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to the Company’s management, including its Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosures. As of September 30, 2026, the Company’s management, including the Company’s Chief Executive Officer and Chief Financial Officer, has concluded, based on their evaluation, that the Company’s disclosure controls and procedures are effective to provide reasonable assurance of the achievement of the objectives described above. There were no changes in the Company’s internal controls over financial reporting that occurred during the most recent quarter that have materially affected, or are reasonably likely to materially affect, the Company’s internal controls over financial reporting.