nLIGHT(LASR) - 2019 Q3 - Quarterly Report

Washington, D.C. 20549 ________________________________________________________ UNITED STATES SECURITIES AND EXCHANGE COMMISSION FORM 10-Q ________________________________________________________ (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38462 ___ ...