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Stock Award Plan and Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Option Activity for Employees and Non-Employees

Stock option activity for employees and non-employees for the nine months ended September 30, 2024 is as follows:

 

 

Shares
Issuable
Pursuant to
Stock
Options

 

 

Weighted-
Average
Exercise Price

 

 

Weighted-
Average
Remaining
Contractual
Terms
(years)

 

Total
Intrinsic
Value (in
thousands)

 

Outstanding January 1, 2024

 

 

1,157,229

 

 

$

11.36

 

 

 

8.5

 

 

$

745

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Granted

 

 

 

 

$

 

 

 

 

 

 

 

Exercised

 

 

 

 

$

 

 

 

 

 

 

 

Cancelled/Forfeited

 

 

(90,625

)

 

$

8.29

 

 

 

 

 

 

 

Expired

 

 

(6,495

)

 

$

48.00

 

 

 

 

 

 

 

Outstanding September 30, 2024

 

 

1,060,109

 

 

$

11.40

 

 

 

7.8

 

 

$

 

Exercisable September 30, 2024

 

 

477,643

 

 

$

18.31

 

 

 

6.8

 

 

$

 

Available for future grant

 

 

459,486

 

 

 

 

 

 

 

 

 

 

Summary of Assumptions Used in Black Scholes Model to Estimate Fair Value of Stock Options

The Company uses the Black-Scholes model to estimate the fair value of stock options granted. There were no stock options granted during the nine months ended September 30, 2024. For stock options granted during the nine months ended September 30, 2023, the Company utilized the following assumptions:

 

 

Nine Months Ended

 

 

September 30, 2023

Expected term (years)

 

5.50

Risk free interest rate

 

4.68%

Volatility

 

119%

Dividend yield

 

0%

Weighted average grant date fair value per share of common stock

 

$6.26

Schedule of Stock-Based Compensation Expense Included in the Company's Consolidated Statements of Operations

The following table presents stock-based compensation expense included in the Company’s consolidated statements of operations:

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2024

 

 

2023

 

 

2024

 

 

2023

 

Research and development

 

$

84,776

 

 

$

185,075

 

 

$

361,270

 

 

$

667,558

 

General and administrative

 

 

222,932

 

 

 

186,868

 

 

 

714,605

 

 

 

689,759

 

Total

 

$

307,708

 

 

$

371,943

 

 

$

1,075,875

 

 

$

1,357,317