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Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Stock-based Compensation Expenses

Total stock‑based compensation expense recorded for employees, directors and non‑employees:

		Three Months Ended								Nine Months Ended
		September 30,								September 30,
(in thousands)		2024				2023				2024				2023
Research and development		$	951			$	764			$	2,907			$	2,378
General and administrative			1,140				1,072				3,453				3,356
Total stock-based compensation expense		$	2,091			$	1,836			$	6,360			$	5,734

Schedule of Options Outstanding

The following table summarizes the information about stock options outstanding at September 30, 2024:

										Weighted-Average
						Weighted-				Remaining
						Average				Contractual				Aggregate
(in thousands, except for share data)		Options Outstanding				Exercise Price				Term (in years)				Intrinsic Value
Outstanding at December 31, 2023			4,695,619			$	2.01				5.9			$	7,875
Options granted			—				—
Options exercised			(327,492	)			1.05
Forfeited			(58,123	)			1.05
Expired			—				—
Outstanding at September 30, 2024			4,310,004			$	2.09				5.0			$	27,613
Exercisable at September 30, 2024			4,168,686			$	2.13				5.0			$	26,561
Nonvested at September 30, 2024			141,318			$	1.05				7.2			$	1,052

Schedule of Restricted Stock Units Outstanding

The following table summarizes the information about restricted stock units outstanding at September 30, 2024:

						Weighted-Average
						Grant Date
(in thousands, except for share data)		Shares				Fair Value
Outstanding at December 31, 2023			6,917,422			$	2.35
Awarded			1,425,000				5.71
Released			(1,256,626	)			1.86
Forfeited			(633,984	)			2.92
Outstanding at September 30, 2024			6,451,812			$	3.35
Nonvested at September 30, 2024			6,205,093			$	3.38
Weighted Average Remaining Recognition Period (in years)			2.6

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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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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
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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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