Title of each class of registered securities Trading Symbol Name of each exchange on which registered Common Stock, $0.001 par value AMTX NASDAQ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ——————— FORM 10-Q ——————— ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended: March 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Comm ...