v3.25.2
Stock-based Compensation (Tables)
12 Months Ended
Apr. 30, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Summary of Stock Option Using the Black-Scholes Option-Pricing Model on Grant Date

The Company estimates fair values of time-based stock options using the Black-Scholes option-pricing model on grant date. For the years ended April 30, 2025 and 2024, the principal assumptions used in applying this model were as follows:

 

 

April 30,
2025

 

 

April 30,
2024

 

Risk free interest rate

 

 

4.39

%

 

 

4.10

%

Volatility

 

 

102.9

%

 

 

85.8

%

Weighted average expected term (in years)

 

 

5.0

 

 

 

5.0

 

Time-based Stock Option  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Summary of Stock Option Activity

The following table summarizes the Company's time-based stock options:

 

 

Number of
Options
Outstanding

 

 

Weighted
Average
Exercise
Price

 

 

Average
Remaining
Contractual
Life
(in years)

 

Outstanding - April 30, 2023

 

 

11,935

 

 

$

329.00

 

 

 

8.6

 

Options granted

 

 

8,000

 

 

$

12.00

 

 

 

9.9

 

Options forfeited

 

 

(1,276

)

 

$

1,323.00

 

 

 

 

Outstanding - April 30, 2024

 

 

18,659

 

 

$

121.00

 

 

 

8.9

 

Options granted

 

 

155,000

 

 

$

3.35

 

 

 

10.0

 

Outstanding - April 30, 2025

 

 

173,659

 

 

$

17.00

 

 

 

9.5

 

 

 

 

 

 

 

 

 

 

 

Non-vested at April 30, 2025

 

 

151,424

 

 

$

5.00

 

 

 

9.7

 

Vested at April 30, 2025

 

 

22,235

 

 

$

98.00

 

 

 

8.5

 

Performance-based Stock Option  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Summary of Stock Option Activity

The following summarizes the Company's performance-based stock options:

 

 

 

Number of
Options
Outstanding

 

 

Weighted
Average
Exercise
Price

 

 

Average
Remaining
Contractual
Life
(in years)

 

Outstanding - April 30, 2023

 

 

5,813

 

 

$

517.00

 

 

 

6.8

 

Options forfeited

 

 

(357

)

 

$

760.00

 

 

 

 

Outstanding - April 30, 2024

 

 

5,456

 

 

$

502.00

 

 

 

5.9

 

Cancelled

 

 

(2,596

)

 

$

704.00

 

 

 

 

Options forfeited

 

 

(73

)

 

$

249.00

 

 

 

 

Outstanding - April 30, 2025

 

 

2,787

 

 

$

320.00

 

 

 

5.1

 

 

 

 

 

 

 

 

 

 

 

Non-vested at April 30, 2025

 

 

917

 

 

$

429.00

 

 

 

4.9

 

Vested at April 30, 2025

 

 

1,870

 

 

$

267.00

 

 

 

5.3