Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Share-Based Payment Arrangement [Abstract]

Stock Plan Activities

Related activity under the Incentive Plan is as follows:

	Awards Available	Options Outstanding	Weighted Average Exercise Price
Balance December 31, 2021	3,651	28,685	$	7.90
Plan amendment	8,000	—	—
Restricted stock unit awards granted	(681)	—	—
Restricted stock unit awards cancelled	218	—	—
Stock option awards granted	(813)	813	11.10
Stock option awards exercised	—	(1,334)	5.65
Stock option awards cancelled	787	(787)	10.02
Balance September 30, 2022	11,162	27,377	$	8.04

Related activity under the Inducement Plan is as follows:

	Awards Available	Options Outstanding	Weighted Average Exercise Price
Balance December 31, 2021	900	4,408	$	6.20
Plan amendment	1,926	—	—
Restricted stock unit awards granted	(424)	—	—
Restricted stock unit awards cancelled	2	—	—
Stock option awards granted	(1,381)	1,381	13.84
Stock option awards exercised	—	(196)	3.77
Stock option awards cancelled	323	(323)	7.02
Balance September 30, 2022	1,346	5,270	$	8.28

Weighted Average Assumptions for Stock Option Awards Granted to Employees and Directors Under the Plans

Weighted Average Assumptions for Stock Option Awards Granted to

Employees and Directors under the Plans

	2022		2021
Expected Life in Years	5.5		5.5
Expected Volatility	84.1	%	84.2	%
Expected Dividend Yield	0.0	%	0.0	%
Risk-Free Interest Rate	2.9	%	0.8	%