avd-defa14a_20210621.htm

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Your Vote Counts! AMERICAN VANGUARD CORPORATION 2021 Annual Meeting Vote by June 1, 2021 11:59 PM ET. For shares held in a Plan, vote by May 27, 2021 11:59 PM ET. AMERICAN VANGUARD CORPORATION ATTN: LUCY COONEY 4695 MACARTHUR COURT, SUITE 1200 NEWPORT BEACH, CA 92660 D48266-P53536 You invested in AMERICAN VANGUARD CORPORATION and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy material for the stockholder meeting to be held on June 2, 2021. Get informed before you vote View the Notice and Proxy Statement and Form 10-K online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 19, 2021. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. For complete information and to vote, visit www.ProxyVote.com Control # Smartphone users Point your camera here and vote without entering a control number Vote Virtually at the Meeting* June 2, 2021 11:00 AM PDT Virtually at: www.virtualshareholdermeeting.com/AVD2021 *Please check the meeting materials for any special requirements for meeting attendance. V1

Vote at www.ProxyVote.com THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Voting Items 1. Election of Directors Nominees: 1a. Scott D. Baskin 1b. Lawrence S. Clark 1c. Debra F. Edwards 1d. Morton D. Erlich 1e. Emer Gunter 1f. Alfred F. Ingulli 1g. John L. Killmer 1h. Eric G. Wintemute 1i. M. Esmail Zirakparvar 2. Ratify the appointment of BDO USA, LLP as independent registered public accounting firm for the year ending December 31, 2021. 3. Resolved, that the compensation paid to the Company’s named executive officers, as disclosed pursuant to Item 402 of Regulation S-K, including the Compensation Discussion and Analysis, compensation tables and narrative discussion, is hereby approved. Board Recommends For For For For For For For For For For For Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Sign up for E-delivery”. D48267-P53536