EQUITY INCENTIVE PLAN (Tables)

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Summary of Stock Option Activity

The following table summarizes the changes in the Company’s outstanding stock options for the three months ended March 31, 2024:

	Number of Options
Outstanding at January 1, 2024		14,271,587
Granted (1)		4,461,083
Exercised		(70,670	)
Forfeited / Cancelled / Expired		(181,006	)
Outstanding at March 31, 2024		18,480,994

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(1)Includes employee new hire grants of stock options to purchase 91,100 shares of the Company's Class A common stock. Also includes annual employee grants of stock options and special employee grants of stock options to purchase 1,934,983 shares of the Company's Class A common stock, and grants to executive officers of stock options to purchase 2,435,000 shares of the Company's Class A common stock. The grants will vest 25% on the first anniversary date of the grant with the remainder vesting equally over the remaining 36 months, subject to the employee’s continued service to the Company through the applicable vesting dates.

Summary of Restricted Stock Unit Activity

The following table summarizes the changes in the Company’s outstanding RSUs for the three months ended March 31, 2024:

	Number of RSUs
Outstanding at January 1, 2024		369,026
Granted		—
Vested		(41,036	)
Forfeited		(13,747	)
Outstanding at March 31, 2024		314,243

Summary of Stock-Based Compensation Expenses by Function

The following table presents details of stock-based compensation expenses by functional line item noted within the Company's operating expenses:

	Three Months Ended March 31,
	2024		2023
Cost of sales	$	24	$	23
Research and development		337		206
Sales and marketing		39		38
General and administrative		632		859
	$	1,032	$	1,126