For the three months ended September 30, 2017, one customer represented 22% of net revenue, one customer represented 17% of net revenue, and two customers each represented 13% of net revenue. For the three months ended September 30, 2016, one customer represented 29% of net revenue.

For the six months ended September 30, 2017, one customer represented 20% of net revenue, one customer represented 16% of net revenue, and two customers each represented 12% of net revenue. For the six months ended September 30, 2016, one customer represented 29% of net revenue.

At September 30, 2017, one customer represented 47%, one customer represented 19%, and one customer represented 17% of the net accounts receivable balance. At March 31, 2017, one customer represented 26%, one customer represented 12%, and one customer represented 10% of the net accounts receivable balance.