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Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2023
Stock-Based Compensation  
Schedule of activity relating to PSUs

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Weighted average

​

​

Number of

​

price per unit

​

  

units

​

(in whole dollars)

​

​

​

​

​

​

Outstanding as of January 1, 2023

 

1,310

​

$

5,506

Granted

​

30

​

$

10,176

Cancelled

​

(10)

​

$

5,506

Forfeited

​

(30)

​

$

5,506

Outstanding as of September 30, 2023

​

1,300

​

​

​

​

​

​

​

​

​

Vested units as of September 30, 2023

​

560

​

$

5,531

Schedule of Stock Option Activity

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

Number of

​

Weighted average

​

​

  

shares

  

price per share

  

​

​

​

​

​

​

​

Outstanding as of January 1, 2023

 

4,882

​

$

17.23

​

Granted

​

1,083

​

$

19.60

​

Forfeited

​

(141)

​

$

19.13

​

Cancelled

​

(18)

​

$

21.76

​

Exercised

​

(309)

​

$

1.65

​

Outstanding as of September 30, 2023

​

5,497

​

$

18.51

​

​

​

​

​

​

​

​

Options vested and exercisable as of September 30, 2023

 

3,381

​

$

16.93

​

Schedule of stock-based compensation charges

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​

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​

​

​

​

​

​

​

​

​

​

Three months ended September 30, 

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Nine months ended September 30, 

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​

2023

​

2022

​

2023

​

2022

​

​

​

​

​

​

​

​

​

​

​

​

​

Research and development

    

$

1,645

​

$

1,105

​

$

4,840

​

$

3,310

Selling, general and administrative

​

 

2,369

​

​

3,378

​

 

10,175

​

​

9,480

Total

​

$

4,014

​

$

4,483

​

$

15,015

​

$

12,790

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

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​

​

​

​

​

​

​

​

Number of

​

  

shares

​

​

​

Outstanding as of January 1, 2023

 

119

Granted

​

133

Vested

​

(61)

Outstanding as of September 30, 2023

​

191

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

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​

​

​

​

​

​

​

​

Number of

​

  

units

​

​

​

Outstanding as of January 1, 2023

 

—

Granted

​

225

Outstanding as of September 30, 2023

​

225

OnkosXcel PSUs  
Stock-Based Compensation  
Schedule of Valuation Assumptions

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​

​

​

​

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​

​

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​

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2023 grant profit share unit valuation inputs

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​

​

​

​

​

Expected volatility

​

97.4

%

​

Risk-free rate of interest

​

3.6

%

​

Expected dividend yield

​

—

%

​

Expected term

​

5.8

years

​

Stock options  
Stock-Based Compensation  
Schedule of Valuation Assumptions

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​

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​

​

​

​

​

​

​

​

​

​

​

​

​

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Nine months ended

​

Nine months ended

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​

September 30, 2023

​

September 30, 2022

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​

​

​

​

​

​

​

​

​

​

​

​

​

Expected term

​

​

5.5

years

-

6.1

years

​

5.5

years

-

6.1

years

Expected stock price volatility

​

​

96.6

%

-

109.2

%

​

92.7

%

-

96.9

%

Risk-free rate of interest

​

​

3.5

%

-

4.4

%

​

1.5

%

-

3.6

%

Expected dividend yield

​

​

0.0

%

-

0.0

%

​

0.0

%

-

0.0

%