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Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of weighted-average assumptions used for stock option awards

The assumptions used in the Company's valuation are summarized as follows, presented on a weighted average basis:

						Year Ended December 31, 2021						Year Ended December 31, 2020
Risk-free interest rate						1.05		%				0.29		%
Expected term (in years)						5.7						5.9
Expected volatility						74.5		%				71.9		%
Expected annual dividends per share						—		%				—		%

Schedule of stock option activity

The following table summarizes the Company's stock option activity for the year ended December 31, 2021:     

						Number of share options						Weighted average exercise price						Weighted average remaining contractual term						Aggregate intrinsic value
Outstanding as of December 31, 2020						3,672,968						$	2.90					8.9 years						$	6,641
Granted						13,262,016						$	5.76
Forfeited						(2,012,851)						$	3.61
Exercised						(1,124,577)						$	2.74
Outstanding as of December 31, 2021						13,797,556						$	5.55					8.6 years						$	712
Outstanding as of December 31, 2021 - vested and expected to vest						12,685,817						$	5.51					8.6 years						$	709
Exercisable at December 31, 2021						1,598,709						$	3.60					7.2 years						$	406

Schedule of RSU activity

The following table summarizes the activity relating to RSUs for the year ended December 31, 2021:

									Number of Shares						Weighted Average Grant Date Fair Value
RSUs - beginning of period									26,923						$	1.60
Vested									(26,923)						$	1.60
RSUs - end of period									—						$	—

Schedule of stock-based compensation expense

Stock‑based compensation expense related to stock options is recorded within the consolidated statements of operations and comprehensive loss as follows:

						Year Ended December 31, 2021						Year Ended December 31, 2020
Research and development						$	5,909					$	749
General and administrative						6,895						1,017
Total stock-based compensation						$	12,804					$	1,766

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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