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Stock-Based Payments (Tables)
 6 Months Ended
Oct. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Allocation Of Share Based Compensation Expense
Stock-based compensation expense was recognized as follows (table in thousands):
 
Three Months Ended
October 31,		Six Months Ended
October 31,
 2025202420252024
General and administrative$191 $(95)$339 $90 
Sales and marketing14 51 26 91 
Research and development32 3 64 7 
Cost of oncology revenue12 50 28 79 
Total stock-based compensation expense$249 $9 $457 $267 
Schedule of Valuation Assumptions For Stock Options
Black-Scholes and Monte Carlo assumptions used to calculate the fair value of Champions options granted by the Company during the three and six months ended October 31, 2025 and 2024 were as follows:
Three Months Ended
October 31,		Six Months Ended
October 31,
 2025202420252024
Expected term in years
0
6
6
6
Risk-free interest rates
—%
3.58% - 3.77%
4.08% - 4.50%
3.58% - 4.48%
Volatility
—%
59.47% - 59.57%
55.65% - 62.00%
 59.47% - 62.72%
Dividend yield—%—%—%—%
Black-Scholes assumptions used to calculate the fair value of Corellia options granted by Corellia during the three and six months ended October 31, 2025 and 2024 were as follows:

Three Months Ended
October 31,		Six Months Ended
October 31,
 2025202420252024
Expected term in years0060
Risk-free interest rates—%—%4.15%—%
Volatility—%—%65%—%
Dividend yield—%—%—%—%
Schedule of Stock Option Activity
The Company’s stock options activity for the 2021 and 2010 equity incentive plans for the six months ended October 31, 2025 was as follows:
 
Directors
and
Employees		Non-
Employees		TotalWeighted
Average
Exercise
Price		Weighted
Average
Remaining
Contractual
Life (Years)		Aggregate
Intrinsic
Value
Outstanding, April 30, 20251,642,351 36,331 1,678,682 $4.98 4.9$4,434,000 
Granted874,000 — 874,000 7.39 9.7
Exercised(109,156)— (109,156)2.11 
Forfeited(15,125)— (15,125)7.04   
Canceled(8,375)— (8,375)7.13 
Outstanding, October 31, 20252,383,695 36,331 2,420,026 $5.96 6.5$3,726,000 
Vested and expected to vest as of October 31, 20252,383,695 36,331 2,420,026 $5.96 6.5$3,726,000 
Exercisable as of October 31, 20251,458,663 5,625 1,464,288 $5.06 4.4$3,476,000 
    
The stock options activity for the Corellia 2023 Global equity incentive plan for the six months ended October 31, 2025 was as follows:
Directors
and
Employees		Non-
Employees		TotalWeighted
Average
Exercise
Price		Weighted
Average
Remaining
Contractual
Life (Years)		Aggregate
Intrinsic
Value
Outstanding, April 30, 2025— — — $— 0$— 
Granted300 — 300 1,682.00 9.56
Outstanding, October 31, 2025300 — 300 $1,682.00 9.56$110,000 
Vested and expected to vest as of October 31, 2025300 — 300 $1,682.00 9.56$110,000 
Exercisable as of October 31, 2025— — — $— — $—