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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

9 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of allocation of stock-based compensation expense included in operating expenses on condensed consolidated statements of operations related to share-based payment awards

The following table summarizes the stock-based compensation expense included in operating expenses on our condensed consolidated statements of operations related to stock options and employee stock purchases for the three and nine months ended September 30, 2024 and 2023, which was allocated as follows:

		Three Months Ended September 30,								Nine Months Ended September 30,
(In thousands)		2024				2023				2024				2023
Research and development		$	1,904			$	2,951			$	7,960			$	5,847
Selling, general and administrative			4,986				4,253				16,432				8,263
Total stock-based compensation expense		$	6,890			$	7,204			$	24,392			$	14,110

Stock-based compensation of $0.3 million and $0.4 million was capitalized to inventory for the three and nine months ended September 30, 2024, respectively.

Schedule of assumptions used to estimate the fair value of service-based stock options granted

The fair value of service-based stock options granted during the nine months ended September 30, 2024 and 2023 has been estimated at the date of grant using the Black- Scholes option-pricing model with the following assumptions:

		Nine Months Ended September 30,
		2024		2023
Dividend yield		0%		0%
Expected volatility range		82.94% to 86.68%		81.53% to 82.12%
Risk-free interest rate range		3.53% to 4.62%		3.42% to 4.62%
Expected term		6 years		6 years

Schedule of assumptions used to estimate the fair value of employee stock purchases under the purchase plan

The fair value of employees’ stock purchase rights during the nine months ended September 30, 2024 and 2023 has been estimated using the Black-Scholes option-pricing model with the following assumptions:

		Nine Months Ended September 30,
		2024		2023
Dividend yield		0%		0%
Expected volatility range		72.08% to 119%		79.05% to 83.22%
Risk-free interest rate range		4.79% to 5.37%		4.73% to 5.40%
Expected term range		6 months to 12 months		6 months to 12 months

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- Definition

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
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (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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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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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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