v3.25.2
Stockholder's Equity and Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2025
Stockholder's Equity and Share-Based Compensation  
Schedule of share-based compensation expense category

Three Months Ended June 30, 

Six Months Ended June 30, 

(in thousands)

    

2025

    

2024

2025

    

2024

Research and development

$

248

$

725

$

492

$

1,543

General and administrative

 

675

 

853

 

1,289

 

1,630

$

923

$

1,578

$

1,781

$

3,173

Schedule of stock option activity plan

    

    

    

Weighted

Weighted

average

average

remaining

Number of

exercise price

contractual

shares

per share

term (years)

Outstanding at January 1, 2025

 

577,581

 

$

77.56

 

7.5

Granted

 

247,083

7.78

 

  

Exercised

 

 

  

Forfeited

 

(98,074)

51.09

 

  

Expired

Outstanding at June 30, 2025

 

726,590

$

57.40

 

7.8

Vested and exercisable at June 30, 2025

 

363,689

$

99.39

 

6.4

Vested or expected to vest at June 30, 2025

 

726,590

$

57.40

 

7.8

Schedule of weighted average assumptions applied to options

Six Months Ended June 30, 

2025

2024

Expected volatility

93.7

%  

88.4

%

Risk‑free interest rate

4.1

%

4.3

%

Expected term

5.9

years

6.0

years

Expected dividend yield

Schedule of activity related to restricted stock unit

    

    

Weighted average

 

Number of shares

 

grant date fair value

Unvested balance at January 1, 2025

 

7,093

 

$

44.80

Granted

 

60,000

 

11.70

Vested

(14,325)

27.56

Forfeited

 

(268)

 

90.40

Unvested balance at June 30, 2025

 

52,500

 

$

11.44