| Quarterly Selected Financial Data (unaudited) |
15. Quarterly Selected Financial Data (unaudited) | | | | | | | | | | | | | | | Quarter Ended | | | December 31, | | September 30, | | June 30, | | March 31, | (in thousands, except per share amounts) | | 2021 | | 2021 | | 2021 | | 2021 | Operating expenses | | $ | 6,810 | | $ | 9,047 | | $ | 11,290 | | $ | 11,483 | Net loss | | | (9,236) | | | (10,673) | | | (11,752) | | | (11,580) | Net loss per share, basic and diluted | | $ | (0.20) | | $ | (0.24) | | $ | (0.28) | | $ | (0.34) |
| | | | | | | | | | | | | | | Quarter Ended | | | December 31, | | September 30, | | June 30, | | March 31, | (in thousands, except per share amounts) | | 2020 | | 2020 | | 2020 | | 2020 | Operating expenses | | $ | 9,879 | | $ | 9,845 | | $ | 10,767 | | $ | 13,269 | Net income (loss) | | | 27,347 | | | (9,796) | | | (10,611) | | | (12,935) | Net income (loss) per share, basic and diluted | | $ | 0.92 | | $ | (0.33) | | $ | (0.36) | | $ | (0.44) |
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