Table of Contents ITEM 3-SAY ON PAY We are asking stockholders to approve, on an advisory basis, the compensation of our named executive officers as disclosed in the “Compensation Discussion and Analysis,” the “Summary Compensation Table,” and the related compensation tables and narrative. This item is being presented pursuant to Section 14A of the Securities Exchange Act of 1934. Although this advisory vote is not binding, the Compensation and Nominating Committee will consider the voting results when evaluating our executive compensation program. Our executive compensation programs are designed to support our long-term success and reflect our pay-for-performance culture. Our company has grown dramatically over the years. Our growth has few historical precedents and makes us one of the fastest-growing technology, consumer, or retail companies at our scale, and in 2018 we continued to grow rapidly, with another year of triple-digit unit and revenue growth while simultaneously making significant progress in gross profit per unit and accelerating our operating leverage. We have a strong belief in promoting a pay-for-performance culture, and, accordingly, as described in the “Compensation Discussion and Analysis” of this proxy statement, the Compensation and Nominating Committee has set challenging performance targets based not on last year’s achievements but continued rapid growth, and has structured our executive compensation program to tie total compensation to long-term stockholder value, as reflected primarily in our stock price. We believe that our executive compensation plans effectively support our strategic and financial goals, create a culture of teamwork, and are directly tied to the performance of the company and shareholder outcomes. The Board recommends a vote “FOR” approval, on an advisory basis, of our executive compensation as described in this proxy statement. ITEM 4- SAY ON PAY FREQUENCY Pursuant to Section 14A of the Exchange Act, we are asking