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STOCKHOLDERS’ EQUITY (Tables)

6 Months Ended

Jun. 30, 2024

Equity [Abstract]

Schedule of Stockholders' Equity Note, Warrants or Rights

As of June 30, 2024 and December 31, 2023, we had the following outstanding Warrants:

			As of June 30, 2024						As of December 31, 2023
			Number of Underlying Shares												Exercise Price						Expiration
June 2022 Warrants			384,615						384,615						$9.10						December 16, 2026
December 2021 Warrants			182,630						182,630						$24.64						June 7, 2027
January 2020 Investor Warrants			26,819						26,819						$23.59						January 13, 2025
January 2020 Placement Agent Warrants			5,954						5,954						$34.96						January 13, 2025
			600,018						600,018

Summary of Stock-based Compensation Expense

The following table summarizes stock-based compensation expense and the impact it had on operations for the periods presented (in thousands):

			Three months ended June 30,												Six months ended June 30,
			2024						2023						2024						2023
Cost of sales			$	—					$	1					$	—					$	1
Product development			—						3						—						7
Selling, general, and administrative			—						19						1						41
Total stock-based compensation			$	—					$	23					$	1					$	49

Summary of Option Activity

A summary of option activity under all plans for the six months ended June 30, 2024 is presented as follows:

			Number of Options						Weighted Average Exercise Price Per Share						Weighted Average Remaining Contractual Life (in years)
Balance at December 31, 2023			30,575						$	5.60
Granted			—						—
Canceled/forfeited			—						—
Expired			(9)						53.33
Balance at June 30, 2024			30,566						$	5.58					8.2
Vested and expected to vest at June 30, 2024			27,170						$	5.70					8.2
Exercisable at June 30, 2024			13,149						$	6.57					8.0

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- Definition

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.

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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 warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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