American Railcar Industries, Inc. announced that, on December 29, 2017, the board of directors of the company has appointed John O'Bryan as president and interim chief executive officer of company, effective as of January 1, 2018. Mr. O'Bryan has been serving the company as senior vice president and chief commercial officer since June 2017. On December 31, 2017, pursuant to the terms of the employment agreement between American Railcar Industries, Inc. (ARI or the company) and Jeffrey S. Hollister, the President and Chief Executive Officer of the company, the employment agreement and Mr. Hollister's employment with the Company terminated.