For the three months ended September 30, 2019, one customer represented 16% of net revenue and one customer represented 18% of net revenue. For the three months ended September 30, 2018, one customer represented 15% of net revenue and one customer represented 13% of net revenue.

For the six months ended September 30, 2018, one customer represented 11% of net revenue and one customer represented 16% of net revenue. For the six months ended September 30, 2018, one customer represented 20% of net revenue and one customer represented 13% of net revenue.

At September 30, 2019, one customer represented 14%, of the net accounts receivable balance. At March 31, 2019, no customer represented more than 10% of the net accounts receivable balance.