NOTE 11 —Related Party Transactions

Revenue transactions with a certain investor—During the three months ended September 30, 2019 and 2018, the Company recognized revenue of zero and during the nine months ended September 30, 2019 and 2018, the Company recognized revenue of zero and $797, respectively, with an investor and holder of the August 2016 Series A warrants which were amended to common stock warrants in conjunction with the November 2018 preferred stock conversion event.  

Management Services Agreement—In October 2017, the Company entered into a management services agreement with B. Riley Principal Investments, an investor, pursuant to which B. Riley Investments agreed to provide advisory and consulting services to the Company. The Company incurred approximately zero and $50 in related consulting fees in each of the three months ended September 30, 2019 and 2018, respectively. The Company incurred approximately $56 and $150 in related consulting fees during the nine months ended September 30, 2019 and 2018, respectively.  At the closing of the Company’s IPO, the management services agreement was terminated in accordance with its terms.