EQUITY INCENTIVE PLAN (Tables)

3 Months Ended

Mar. 31, 2022

Disclosure Of Compensation Related Costs Sharebased Payments [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, 2022:

	Number of Options
Outstanding at January 1, 2022		7,522,136
Granted		4,231,693
Exercised		—
Forfeited		(271,368	)
Outstanding at March 31, 2022		11,482,461

Summary of Restricted Stock Unit Activity

The following table summarizes the changes in the Company’s outstanding restricted stock units for the three months ended March 31, 2022:

	Number of RSUs
Outstanding at January 1, 2022		117,516
Granted		1,660,535
Exercised		—
Forfeited		—
Outstanding at March 31, 2022		1,778,051

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,
	2022		2021
Cost of sales - Device		16		—
Research and development		781		209
Sales and marketing		96		6
General and administrative		3,218		52
		4,111		267