v3.26.1
Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2025
Stock-Based Compensation  
Schedule of stock option activity

Number of

Weighted average

  ​

shares

  ​

price per share

  ​

Outstanding as of January 1, 2025

 

311

$

265.36

Granted

78

$

7.47

Forfeited

(8)

$

124.50

Cancelled

(29)

$

372.12

Exercised

$

Outstanding as of December 31, 2025

352

$

202.81

Options vested and exercisable as of December 31, 2025

 

328

$

207.59

Schedule of stock-based compensation charges

Year ended December 31, 

2025

2024

Research and development

$

426

$

2,251

Selling, general and administrative

 

2,341

3,905

Total

$

2,767

$

6,156

BTI RSU  
Stock-Based Compensation  
Schedule of activity relating to RSUs

Number of

  ​

shares

Outstanding as of January 1, 2025

 

27

Granted

111

Cancelled

(7)

Vested

(24)

Outstanding as of December 31, 2025

107

BTI PSU  
Stock-Based Compensation  
Schedule of activity relating to PSUs

Number of

  ​

shares

Outstanding as of January 1, 2025

 

70

Granted

Cancelled

(13)

Vested

(57)

Outstanding as of December 31, 2025

OnkosXcel PSU  
Stock-Based Compensation  
Schedule of activity relating to PSUs

Weighted average

Number of

price per unit

  ​

units

(in whole dollars)

Outstanding as of January 1, 2025

 

1,166

$

5,686

Granted

$

Cancelled

(94)

$

5,953

Forfeited

$

Outstanding as of December 31, 2025

1,072

Vested units as of December 31, 2025

1,021

$

5,602

Schedule of Valuation Assumptions

2024 grant profit share unit valuation inputs

Expected volatility

97.4

%

Risk-free rate of interest

3.6

%

Expected dividend yield

%

Expected term

5.8

years

OnkosXcel RSUs  
Stock-Based Compensation  
Schedule of activity relating to RSUs

Number of

  ​

units

Outstanding as of January 1, 2025

 

176

Granted

Vested

(7)

Cancelled

(34)

Outstanding as of December 31, 2025

135

Employee Stock Option  
Stock-Based Compensation  
Schedule of Valuation Assumptions

Year ended

Year ended

  ​ ​ ​

December 31, 2025

December 31, 2024

Expected term

5.5

years

-

6.0

years

5.5

years

-

6.1

years

Expected stock price volatility

112.0

%

-

112.1

%

108.0

%

-

112.5

%

Risk-free rate of interest

4.5

%

-

4.5

%

4.0

%

-

4.5

%

Expected dividend yield

0.0

%

-

0.0

%

0.0

%

-

0.0

%