STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2026

Share-Based Payment Arrangement [Abstract]

Schedule of stock option activity

The following table presents the outstanding stock option activity:

	Number of Options		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (years)
Three months ended March 31, 2026:
Outstanding as of December 31, 2025	175,578		$	20.75	8.8
Granted	—		—		—
Exercised	—		—		—
Forfeited	—		—		—
Expired	(2)		4,104.00		—
Outstanding as of March 31, 2026	175,576	(1)	20.70		8.6
Exercisable as of March 31, 2026	123,085		28.30		8.5

(1) Includes options related to 603 shares that are inducement awards and not granted under the 2018 Plan.

Schedule of stock-based compensation expense

The stock-based compensation expense was recorded as follows (in thousands):

	Three Months Ended March 31,
	2026		2025
Research and development	$	2	$	3
Selling, general and administrative	21		88
Total stock-based compensation expense	$	23	$	91