Quarterly report [Sections 13 or 15(d)]

Stock-Based Compensation

v3.25.1
Stock-Based Compensation
3 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation Stock-Based Compensation
Stock Options
The Company grants stock-based compensation under its 2024 Equity Incentive Plan (the "2024 Plan"), 2020 Long-Term Incentive Plan (the “2020 Plan”) and its 2016 Equity Incentive Plan (the “2016 Plan”). The 2024 Plan, 2020 Plan and 2016 Plan allows the Company to grant incentive and nonqualified stock options, and shares of restricted stock to its employees, directors and consultants.

On March 2, 2016, the Company adopted its 2016 Plan. Under the 2016 Plan, there are a total of five shares of the Company’s common stock available for issuance and the 2016 Plan has a term of 10 years.

On December 16, 2020, the Company adopted its 2020 Plan. Under the 2020 Plan, there are a total of 20,064 shares of the Company’s common stock available for issuance and the 2020 Plan has a term of 10 years.

On May 9, 2024, the Company adopted its 2024 Plan. Under the 2024 Plan, there are a total of 160,164 shares of the Company’s common stock available for issuance and the 2024 Plan has a term of 10 years.

Under the 2024 Plan, 2020 Plan and the 2016 Plan (collectively, the "Plans"), upon the exercise of stock options and issuance of fully vested restricted common stock, shares of common stock may be withheld to satisfy tax withholdings. The Company intends to net settle certain employee options to ensure adequate authorized shares under the Plans.

On December 22, 2022, the Company adopted its 2022 Long-Term Incentive Plan (the “2022 Plan”). Under the 2022 Plan, there are a total of 160,164 shares of the Company’s common stock available for issuance and the 2022 Plan has a termination date of October 31, 2032.
A summary of activity under the various stock-based plans for the three months ended March 31, 2025 is as follows:
Shares
Underlying
Options
Weighted
Average
Exercise
Price
Weighted
Average
Remaining
Contractual
Term
(Years)
Aggregate
Intrinsic
Value
Outstanding at December 31, 2024 102  $ 2,251,627  5.6 $ — 
Granted —  —  — 
Forfeited —  —  — 
Outstanding at March 31, 2025 102  $ 2,251,627  5.3 $ — 
Exercisable at March 31, 2025 93  $ 2,224,419  5.0 $ — 


During the three months ended March 31, 2025, the Company recognized stock-based compensation of approximately $7,000 related to stock options. As of March 31, 2025, unrecognized stock-based compensation totaled approximately $10,000, which is expected to be recognized over a weighted-average period of 0.76 years.


The following table presents the weighted-average inputs used for the valuation of options granted, as per the Black-Scholes fair value model for the three months ended March 31, 2024:
Three Months Ended
March 31, 2024
Dividend yield —%
Expected price volatility 95.7%
Risk free interest rate 4.9%
Expected term 0.8 years
Restricted Stock Units ("RSU")
RSUs are share awards that entitle the holder to receive freely tradeable shares of the Company’s common stock upon vesting. The RSUs cannot be transferred and the awards are subject to forfeiture if the holder’s employment terminates prior to the release of the vesting restrictions. The RSUs generally vest over one or two year cliff period on an annual basis, provided the employee remains continuously employed with the Company. The fair value of the RSUs is equal to the closing price of the Company’s common stock on the grant date.
A summary of the Company’s restricted stock activity and related information for the three months ended March 31, 2025 is as follows:
Number of
Shares
Weighted Average
Grant-Date
Fair Value
Unvested at December 31, 2024 7,425 $ 367 
Granted —  — 
Vested (275) $ 2,499 
Cancelled
—  — 
Unvested at March 31, 2025 7,150 $ 285 
The weighted average grant date fair value of RSUs granted during three month ended March 31, 2024 was $2,543.
During the three months ended March 31, 2025, the Company recognized stock-based compensation of approximately $0.5 million related to RSUs. As of March 31, 2025, unrecognized stock-based compensation totaled approximately $1.0 million, which is expected to be recognized over a weighted-average period of 1.17 years.
Stock-Based Compensation
The total stock-based compensation expense recognized, including stock-based compensation related to warrants issued to nonemployees (See Note 8 — Warrants), was as follows (in thousands):
Three Months Ended March 31, 2025 Three Months Ended
March 31, 2024
   
Research and development expenses $ $ 30 
Selling, general and administrative expenses 2,107  244 
Total stock-based compensation $ 2,114  $ 274