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STOCK-BASED COMPENSATION (Tables) - Q1
 3 Months Ended
Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-based Compensation Expense
The Company recorded stock-based compensation related to stock options issued under the GRI Operations Plan and A&R 2018 Plan in the following expense categories of its accompanying statements of operations for the years ended December 31, 2023 and 2022:
For the Year Ended December 31,
20232022
Research and development$— $— 
General and administrative388 25 
Total$388 $25 
The Company recorded stock-based compensation related to equity-based awards issued under the GRI Operations Plan and the A&R 2018 Plan in the following expense categories of its accompanying consolidated statements of operations for the three months ended March 31, 2024 and 2023:
For the Three Months Ended March 31,
20242023
Research and development$— $— 
General and administrative37 13 
Total$37 $13 
Schedule of Activity of Stock Options
The table below represents the activity of stock options granted to employees and non-employees for the three months ended March 31, 2024:
Number of optionsWeighted average exercise priceWeighted average remaining contractual term (years)
Outstanding at December 31, 20232,503$471.45 9.55
Granted— 
Exercised— 
Forfeited/cancelled— 
Outstanding at March 31, 20242,503$471.45 9.30
Exercisable at March 31, 2024456$1,655.14 8.78
Vested and expected to vest at March 31, 20242,503$471.45 9.30