| Selected Quarterly Financial Data (unaudited) |
Selected Quarterly Financial Data (unaudited)The following table provides the selected quarterly financial information for the years 2020 and 2019 (in thousands, except per share data): | | | | | | | | | | | | | | | | | | | | | | | | | Three months ended | | March 31, 2020 | | June 30, 2020 | | September 30, 2020 | | December 31, 2020 | | Revenue | $ | 8,618 | | | $ | 3,673 | | | $ | 10,612 | | | $ | 9,830 | | | Gross profit | $ | 5,650 | | | $ | 1,012 | | | $ | 7,462 | | | $ | 7,078 | | | Net loss | $ | (7,163) | | | $ | (11,911) | | | $ | (3,860) | | | $ | (9,297) | | Net loss per share attributable to common
stockholders, basic and diluted | $ | (3.76) | | | $ | (6.15) | | | $ | (1.37) | | | $ | (0.27) | |
| | | | | | | | | | | | | | | | | | | | | | | | | Three months ended | | March 31, 2019 | | June 30, 2019 | | September 30, 2019 | | December 31, 2019 | | Revenue | $ | 5,778 | | | $ | 7,366 | | | $ | 9,104 | | | $ | 10,347 | | | Gross profit | $ | 3,717 | | | $ | 4,953 | | | $ | 6,407 | | | $ | 7,337 | | | Net loss | $ | (6,128) | | | $ | (5,571) | | | $ | (4,335) | | | $ | (4,669) | | Net loss per share attributable to common
stockholders, basic and diluted | $ | (3.61) | | | $ | (3.24) | | | $ | (2.41) | | | $ | (2.48) | |
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