UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND 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 AND EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM __________ TO __________. Commission File number: 0-10004 NAPCO SECURITY TECHNOLOGIES, INC. (Exact name of Registrant as specified in its charter) Delaware ...