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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2024

Stock-Based Compensation

Schedule of assumptions used in the fair value estimation of each option grant

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​	​	​	​	​	​
​	​	June 30,			​
​		2024		2023
Expected life (years)	​	3.8 - 4.9	​	3.8 - 5.2	​
Risk-free interest rate		4.2% - 4.5%	​	3.5% - 4.1%	​
Volatility	​	68.9% - 70.5%	​	69.9% - 76.2%	​
Dividend yield		0%	​	0%	​

Schedule of stock-based compensation expense related to all of our share-based payment awards

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Three Months Ended June 30,

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Six Months Ended June 30,

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​

2024

2023

2024

2023

Cost of revenue

​

$

747

​

$

575

​

$

1,417

​

$

1,050

​

Selling, general and administrative

​

3,930

​

​

4,766

​

8,307

​

​

9,070

​

Engineering and development

​

320

​

​

459

​

729

​

​

864

​

​

​

$

4,997

​

$

5,800

​

$

10,453

​

$

10,984

​

Schedule of stock option activity

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​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	Weighted-	​	​	​
​	​	​	​	Weighted-		​	Average	​	​	​
​	​	​	​	Average		​	Remaining	​	Aggregate
​	​	Number of	​	Exercise		​	Contractual	​	Intrinsic
​		Shares		Price/Share			Term (Years)		Value (1)
Outstanding — December 31, 2023	​	7,224,820	​	$	15.88	​	—	​	​	—
Granted (weighted-average fair value of $7.81 per share)	​	308,643	​	​	14.26	​	—	​	​	—
Exercised		(116,514)		​	5.39		—	​	​	—
Forfeited	​	(72,063)	​	​	34.37	​	—	​	​	—
Outstanding — June 30, 2024		7,344,886	​	$	15.80		3.9	​	$	6,452
Vested (exercisable) — June 30, 2024		6,528,307	​	$	14.62		3.7	​	$	6,452
Expected to vest after June 30, 2024 (unexercisable)		816,579	​	$	25.24		5.8	​	$	—

(1) Aggregate intrinsic value represents the difference between the exercise price of the option and the closing market price of our common stock on June 30, 2024, which was $6.91 per share.

Schedule of restricted stock unit activity

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​	​	​	​	​	​
​		​		Weighted Average
​	​	Number of Restricted	​	Fair Value per
​	​	Stock Units	​	Share
Outstanding – December 31, 2023		1,076,629	​	$	27.73
Granted		424,543	​		14.51
Share issuance		(324,754)	​		16.18
Forfeited		(67,639)	​		24.69
Outstanding – June 30, 2024		1,108,779	​	$	22.09

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Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

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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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