Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Stock Based Compensation

Schedule of option activity under the Plan

				Weighted-average
				Remaining
	Number of	Weighted-average		Contractual Term
Options	Options	Exercise Price		(in years)
Outstanding at January 1, 2024	24,264,016	$	2.53	7.03
Granted	6,324,127	$	1.59
Exercised	(5,141,728)	$	0.05
Forfeited or expired	(4,840,722)	$	3.26
Outstanding at December 31, 2024	20,605,693	$	2.45	6.68
Exercisable at December 31, 2023	16,662,487	$	1.99	4.87
Exercisable at December 31, 2024	12,275,078	$	2.48	5.27

Schedule of restricted stock grants to non employees

	For the Years Ended December 31,
	2024		2023
Restricted stock grants to non-employees		298,508		—

Schedule of recognized & allocated compensation costs

	For the Years Ended December 31,
	2024		2023
Stock-based compensation costs related to RSUs	$	5,662	$	3,427
Stock-based compensation costs related to stock options		6,138		6,774
Stock-based compensation costs related to the ESPP		172		169
Total equity-based compensation costs	$	11,972	$	10,370

	For the Years Ended December 31,
	2024		2023
Direct costs	$	1,131	$	3,751
Research and development		4,463		4,826
Selling, general and administrative		6,378		1,793
Total equity-based compensation cost	$	11,972	$	10,370

Schedule of fair value of each option using the Black-Scholes option pricing model

	2024			2023
Approximate risk‑free rate		4.23	%		4.17	%
Volatility		48.1	%		46.91	%
Average expected life (in years)		6			6
Dividend yield		0	%		0	%
Weighted‑average grant date fair value	$	0.82		$	1.42
Estimated fair value of total stock options granted	$	5,175		$	7,815

Restricted stock units (RSUs)

Stock Based Compensation

Schedule of non-vested Restricted stock units

	Number of	Weighted-average
	RSUs	Grant Date Fair Value
Balance at December 31, 2023	4,473,016		3.30
Granted	6,792,700		1.58
Vested or Exercised	(1,601,279)		2.89
Forfeited	(1,463,884)		2.26
Balance at December 31, 2024	8,200,553		3.10

Restricted stock

Stock Based Compensation

Schedule of non-vested Restricted stock units

	Number of	Weighted-average
	Grants	Grant Date Fair Value
Balance at December 31, 2023	—	—
Granted	298,508	1.23
Vested	(59,702)	1.23
Forfeited	—	—
Balance at December 31, 2024	238,806	1.23

2021 Equity Incentive Plan

Stock Based Compensation

Schedule of option activity under the Plan

	For the Years Ended December 31,
	2024		2023
Option awards granted under 2021 Plan		6,324,127		5,176,889
RSU awards granted under 2021 Plan		6,792,700		4,663,079