X0306 4 2018-12-05 true 0001344596 American Railcar Industries, Inc. ARII 0001251997 FIRST HAROLD C/O AMERICAN RAILCAR INDUSTRIES, INC. 100 CLARK STREET ST. CHARLES MO 63301 true Common Stock, $0.01 par value per share 2018-12-05 4 D 0 1500 70 D 0 I By Reporting Person's Pension Plan On December 5, 2018, the transactions contemplated by the Agreement and Plan of Merger (the "Merger Agreement"), dated as of October 22, 2018, by and between American Railcar Industries, Inc. ("ARI") and STL Parent Corp. were completed. Pursuant to the Merger Agreement, Merger Sub was merged with and into ARI, with ARI continuing as the surviving corporation after the merger. Pursuant to the terms of the Merger Agreement, all of the outstanding shares of common stock of ARI, including those held by Mr. First, were converted into the right to receive the merger consideration of $70.00 per share. /s/ Harold First 2018-12-06