Table of Contents (MARK ONE) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 ¨ 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: 001-38226 BLACK RIDGE ACQUISITION CORP. (Exact Name of Registrant as Specified in Its Charter) | --- | --- | |-----------------------------------------|-----------------------| | Delaware | 82-165942 ...