American Vanguard Announces Amendment to Credit Facility, Revises Guidance and Schedules Earnings Conference Call NEWPORT BEACH, Calif.--(BUSINESS WIRE)--American Vanguard Corporation (NYSE: AVD): Credit Agreement American Vanguard Corporation (NYSE: AVD) today announced that, along with certain of its affiliates, it has entered into a Fifth Amendment to the Second Amended and Restated Credit Agreement with a group of commercial lenders led by the Bank of the West which increases the ratio of maximum loan to trailing EBITDA (as defined in the agreement) to 4.25-to-1 and then gradually steps that ratio down