UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6)* American Vanguard Corporation ----------------------------- (Name of Issuer) Common Stock, $0.10 Par Value per Share --------------------------------------- (Title of Class of Securities) 030371108 --------- (CUSIP Number) December 31, 2005 ----------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [X] Rule 13d-1(c) [ ] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). 1 Schedule 13G/A CUSIP No. 030371108 1. Names of Reporting Persons: Jay R. Harris I.R.S. Identification Nos. of above persons (entities only): Not Applicable 2. Check the Appropriate Box if a Member of a Group (See Instructions): (a) [ ] (b) [ ] 3. SEC Use Only 4. Citizenship or Place of Organization: U.S. Number of 5. Sole Voting Power: 888,065 Shares Beneficially 6. Shared Voting Power: --0-- Owned by Each 7. Sole Dispositive Power: 945,485 Reporting Person With 8. Shared Dispositive Power: 704,644 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 1,650,129 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions): [ ] 11. Percent of Class Represented by Amount in Row (9): 9.01% 12. Type of Reporting Person (See Instructions): IN 2 Item 1. (a) The name of the issuer is American Vanguard Corporation (the "Corporation"). (b) The Corporation's executive office is located at 4695 MacArthur Court, Newport Beach, California 92660. Item 2. (a) The person filing this statement is Jay R. Harris. (b) Mr. Harris' residence is 130 East End Avenue, New York, NY 10028. (c) Mr. Harris is a United States citizen. (d) The security (the "Security") is common stock, $0.10 par value per share. (e) The CUSIP Number of the Security is 030371108. Item 3. Not applicable. Item 4. Ownership. (a) Mr. Harris is the beneficial owner of 1,650,129 shares of the Security through the following: o his direct, personal ownership of shares of the Security; o his IRA; o his position as trustee for the Lily Harris Trust; o his investment discretion over the accounts of Ann Lozman, her IRA and her Roth IRA; o his investment discretion over the account of Emma Lozman; o his investment discretion over the account of Lesley Ochlis; o his investment discretion over the accounts of Lisa Eng and her IRA; o his investment discretion over the UGMA account of Samantha Eng and the UGMA account of George Eng; 3 o his investment discretion over the account of the IRA of James Harris; o his position as President of The Jay and Sandra Harris Foundation; o his position as General Partner of One GT Associates; and o his position as President of Goldsmith & Harris Incorporated ("G&H"), a broker-dealer registered under Section 15 of the Securities Exchange Act of 1934 and an investment adviser registered under the Investment Advisers Act of 1940, by virtue of G&H's investment discretion over accounts of its clients that hold 704,644 shares of the Security. The 1,650,129 shares of the Security of which Mr. Harris is the beneficial owner includes 14,520 shares of the Security into which options for the Security held by Mr. Harris are convertible upon exercise. The determination of the number of shares of the Security beneficially owned by Mr. Harris and the percentage such shares represent of all of the outstanding shares of the Security was made in accordance with Rule 13d-3(d)(1) under the Securities Exchange Act of 1934. (b) The amount of shares of the Security beneficially owned by Mr. Harris is 9.01% of the total outstanding shares of the Security. (c) (i) Mr. Harris has the sole power to vote or to direct the vote of 888,065 shares of the Security. (ii) Not applicable. (iii) Mr. Harris has the sole power to dispose, or to direct the disposition, of 945,485 shares of the Security. (iv) Mr. Harris shares with G&H the power to dispose, or to direct the disposition, of 704,644 shares of the Security. Item 5. Ownership of Five Percent or Less of a Class. Not applicable. Item 6. Ownership of More than Five Percent on Behalf of Another Person. The clients of G&H, the Lily Harris Trust, Ann Lozman, her IRA and her Roth IRA, Emma Lozman, Lesley Ochlis, Lisa Eng and her IRA, Samantha Eng's UGMA account, George Eng's UGMA account, the IRA of James Harris, The Jay and Sandra Harris Foundation and One GT Associates may have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, shares of the 4 Security. None of these persons has an interest in 5% or more of the total outstanding shares of the Security. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company. See Exhibit A. Item 8. Identification and Classification of Members of the Group. Not applicable. Item 9. Notice of Dissolution of Group. Not applicable. Item 10. Certification. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. 5 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: February 7, 2006 /s/ Jay R. Harris ----------------- Jay R. Harris 6