7. Related Party Transactions

The Company has entered into sales agreements with certain of its investors. The following table sets forth revenue from product sales to companies affiliated with these investors (in thousands):

As of December 31, 2013 and June 30, 2014, the Company had accounts receivable from these companies totaling $0.6 million and $0.9 million, respectively.  Purchase and payment terms with these related parties are consistent with other non-affiliated companies.