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Equity Incentive Plans (Tables)
3 Months Ended
Mar. 31, 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

 

1,806,796

$

11.61

 

 

$

Exercised

(201,708)

$

3.49

$

1,030

Forfeited/Cancelled/Expired

 

(769)

$

398.69

 

 

$

Outstanding at March 31, 2026

 

6,408,240

$

5.53

 

8.0

$

32,650

Vested and expected to vest at March 31, 2026

 

6,408,240

$

5.53

 

8.0

$

32,650

Exercisable at March 31, 2026

 

2,919,668

$

3.50

 

6.6

$

19,680

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 March 31, 2026

135,000

$

2.65

Schedule of Assumptions Used in the Black-Scholes Model

Three Months Ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

Risk-free interest rate

3.76%-3.83%

4.27%-4.30%

Expected volatility

99.58%-100.00%

99.64%-101.43%

Expected term (in years)

5.50-6.25

5.75-6.25

Expected dividend yield

0%

0%

Schedule of Stock-Based Compensation Expenses

Three Months Ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

Research and development

$

460

$

320

General and administrative

 

615

 

461

Total stock-based compensation expense

$

1,075

$

781