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Equity Incentive Plans (Tables)
6 Months Ended
Jun. 30, 2026
Equity Incentive Plans  
Schedule of Stock Option Activity

Options Outstanding

Weighted

Average

Weighted

Remaining

Average

Contractual

Aggregate

Exercise

Term

Intrinsic

  ​ ​ ​

Shares

  ​ ​ ​

Price

  ​ ​ ​

(Years)

  ​ ​ ​

Value (in thousands)

Outstanding at December 31, 2025

 

4,803,921

$

3.22

 

7.4

$

15,045

Granted

 

1,858,076

$

11.65

 

 

$

Exercised

(364,725)

$

3.33

$

2,041

Forfeited/Cancelled/Expired

 

(23,801)

$

18.93

 

 

$

89

Outstanding at June 30, 2026

 

6,273,471

$

5.65

 

7.9

$

14,800

Vested and expected to vest at June 30, 2026

 

6,273,471

$

5.65

 

7.9

$

14,800

Exercisable at June 30, 2026

 

2,869,012

$

3.62

 

6.5

$

8,411

Schedule of Restricted Stock Awards and Restricted Stock Unit Activity

Weighted Avg

Grant Date

  ​ ​ ​

Shares

  ​ ​ ​

Fair Value

Outstanding at December 31, 2025

152,500

$

2.73

Granted

$

Vested

(17,500)

$

3.38

Cancelled

$

Outstanding at June 30, 2026

135,000

$

2.65

Schedule of Assumptions Used in the Black-Scholes Model

Three Months Ended June 30, 

Six Months Ended June 30, 

2026

  ​ ​ ​

2025

  ​ ​ ​

2026

  ​ ​ ​

2025

Risk-free interest rate

4.01%

3.76%-4.01%

4.27%-4.30%

Expected volatility

98.36%

98.36%-100.00%

99.64%-101.43%

Expected term (in years)

6.00

5.50-7.00

5.75-6.25

Expected dividend yield

0%

0%

0%

Schedule of Stock-Based Compensation Expenses

Three Months Ended June 30,

 

Six Months Ended June 30, 

  ​ ​ ​

2026

  ​ ​ ​

2025

 

2026

  ​ ​ ​

2025

Research and development

$

1,456

$

167

$

1,916

$

487

General and administrative

 

1,935

 

408

 

2,550

 

869

Total stock-based compensation expense

$

3,391

$

575

$

4,466

$

1,356