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Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock Option Activity

The activity for the Company’s 2014 Plan and 2015 Plan, for the six months ended June 30, 2023, is summarized as follows:

		Number of Shares				Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Life (in years)				Aggregate Intrinsic Value ($000)
Outstanding — December 31, 2022			1,740,308			$	12.21				6.16			$	—
Granted			303,000			$	1.87
Forfeited/Cancelled			(72,772	)		$	14.59
Outstanding — June 30, 2023			1,970,536			$	10.53				6.42			$	533
Exercisable — June 30, 2023			1,274,086			$	14.48				4.99			$	94
Vested or expected to vest — June 30, 2023			1,970,536			$	10.53				6.42			$	533

Schedule of Restricted Stock Units ("RSU") Activity

Restricted stock unit (“RSU”) activity under the 2014 Plan and 2015 Plan for the six months ended June 30, 2023, is summarized as follows:

		Number of Shares				Weighted Average Grant Date Fair Value Per Share
Non-vested at December 31, 2022			633,270			$	5.29
Granted			1,929,575			$	1.79
Vested			(296,686	)		$	5.06
Forfeited			(71,908	)		$	2.92
Non-vested at June 30, 2023			2,194,251			$	2.32

Stock-Based Compensation Expense Related to Stock Options

Stock-based compensation expense related to stock options is included in the following line items in the accompanying unaudited condensed consolidated statements of operations (in thousands):

		Three Months Ended June 30,								Six Months Ended June 30,
		2023				2022				2023				2022
Research and development		$	301			$	343			$	675			$	628
Selling, general and administrative			427				757				760				1,394
Total		$	728			$	1,100			$	1,435			$	2,022

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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