v3.26.1
Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2026
Stock-Based Compensation  
Schedule of stock option activity

Number of

Weighted average

  ​

shares

  ​

price per share

  ​

Outstanding as of January 1, 2026

 

352

$

202.81

Granted

119

$

2.01

Forfeited

(1)

$

143.42

Cancelled

(3)

$

387.85

Exercised

$

Outstanding as of June 30, 2026

467

$

150.78

Options vested and exercisable as of June 30, 2026

 

332

$

206.82

Schedule of stock-based compensation charges

Three months ended June 30, 

Six months ended June 30, 

2026

2025

2026

2025

Research and development

  ​ ​ ​

$

51

$

648

$

130

$

134

Selling, general and administrative

 

307

908

 

663

1,602

Total

$

358

$

1,556

$

793

$

1,736

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

Number of

  ​

shares

Outstanding as of January 1, 2026

 

107

Granted

409

Cancelled

(3)

Vested

(205)

Outstanding as of June 30, 2026

308

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, 2026

 

1,072

$

5,663

Granted

$

Cancelled

$

Forfeited

$

Outstanding as of June 30, 2026

1,072

Vested units as of June 30, 2026

1,061

$

5,611

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, 2026

 

135

Granted

Vested

(4)

Cancelled

Outstanding as of June 30, 2026

131

Employee Stock Option  
Stock-Based Compensation  
Schedule of Valuation Assumptions

Six months ended

Six months ended

  ​ ​ ​

June 30, 2026

June 30, 2025

Expected term

5.5

years

5.3

years

Expected stock price volatility

122.0

%

112.0

%

Risk-free rate of interest

3.8

%

4.5

%

Expected dividend yield

0.0

%

0.0

%