v3.26.1
Stock-Based Compensation
6 Months Ended
Jun. 30, 2026
Share-Based Payment Arrangement [Abstract]  
Stock-based compensation
9.
Stock-Based Compensation

Stock Option Valuation

For stock options requiring an assessment of value during the six months ended June 30, 2026 and 2025, the fair value of each stock option award was estimated using the Black-Scholes option-pricing model utilizing the following assumptions:

 

 

 

June 30, 2026

Risk-free interest rate

 

3.92 - 4.19%

Expected dividend yield

 

0%

Expected volatility

 

88.60% - 104.03%

Expected life

 

5.50 to 6.25 years

 

 

 

 

 

June 30, 2025

Risk-free interest rate

 

4.05% - 4.46%

Expected dividend yield

 

0%

Expected volatility

 

86.46% - 88.15%

Expected life

 

5.50 to 6.25 years

 

A summary of stock option activity for the six months ended June 30, 2026 is as follows:

 

 

 

Number of
Shares*

 

 

Weighted
Average
Exercise
Price*

 

 

Weighted
Average
Remaining
Contractual
Life
(in Years)

 

Stock options outstanding at December 31, 2025

 

 

424,910

 

 

$

116.68

 

 

 

6.79

 

Granted

 

 

1,320,053

 

 

 

29.85

 

 

 

 

Exercised

 

 

(43,390

)

 

 

18.82

 

 

 

 

Forfeited

 

 

(113,684

)

 

 

28.66

 

 

 

 

Expired

 

 

(24,094

)

 

 

228.53

 

 

 

 

Stock options outstanding at June 30, 2026

 

 

1,563,795

 

 

 

50.78

 

 

 

9.07

 

Stock options exercisable at June 30, 2026

 

 

351,300

 

 

$

121.44

 

 

 

6.52

 

 

The aggregate intrinsic value of exercisable but unexercised in-the-money stock options at June 30, 2026 was $0.4 million, with a weighted average remaining contractual term of 6.52 years. The aggregate intrinsic value of options is calculated as the difference of the market close price of $31.56 on June 30, 2026 and the exercise price.

 

During the three and six months ended June 30, 2026, the Company recognized $3.9 million in stock-based compensation related to stock option activity. As of June 30, 2026, total unrecognized stock-based compensation expense was $28.6 million, which is expected to be recognized as an operating expense in the Company’s condensed consolidated statements of operations over the weighted average remaining period of 9.07 years.

 

During the three and six months ended June 30, 2026, the Company granted stock options to purchase 1.3 million shares of common stock with a weighted average grant date fair value of $29.96 per share and stock options to purchase 1.3 million shares of common stock with a weighted average grant date fair value of $29.85 per share, respectively.

 

During the three and six months ended June 30, 2025, the Company granted stock options to purchase 1.6 thousand shares of common stock with a weighted average grant date fair value of $18.60 per share and stock options to purchase 64.6 thousand shares of common stock with a weighted average grant date fair value of $29.70 per share, respectively.

 

Restricted Stock Units

 

On May 1, 2026, the Company granted 655,071 restricted stock units (“RSUs”) to certain executives with a grant date fair value of $30.42 per share. The RSUs vested immediately on grant date.

 

The following table summarizes the RSU activity under the 2026 Inducement Plan for the six months ended June 30, 2026:

 

Restricted Securities

Number of Shares

 

 

Weighted Average Grant Date Fair Value Per Share

 

Nonvested balance at December 31, 2025

 

 

 

$

 

Granted

 

655,071

 

 

 

30.42

 

Vested/Released

 

(655,071

)

 

 

30.42

 

Nonvested balance at June 30, 2026

 

 

 

$

 

 

The Company recognized $19.9 million in stock-based compensation during the three and six months ended June 30, 2026 related to RSU activity. As of June 30, 2026, there was no unrecognized stock-based compensation.

 

Stock-based Compensation

Stock-based compensation for the three and six months ended June 30, 2026 and 2025 was included in the Company’s condensed consolidated statements of operations as follows:

 

 

 

Three Months Ended
June 30,

 

 

Six Months Ended June 30,

 

(in thousands)

 

2026

 

 

2025

 

 

2026

 

 

2025

 

General and administrative

 

$

20,336

 

 

$

580

 

 

$

20,355

 

 

$

1,275

 

Research and development

 

 

3,502

 

 

 

683

 

 

 

3,531

 

 

 

1,326

 

Total stock-based compensation

 

$

23,838

 

 

$

1,263

 

 

$

23,886

 

 

$

2,601

 

 

Stock-based compensation for the three and six months ended June 30, 2026 and 2025 by type was as follows:

 

 

 

Three Months Ended
June 30,

 

 

Six Months Ended June 30,

 

(in thousands)

 

2026

 

 

2025

 

 

2026

 

 

2025

 

Stock options

 

$

3,911

 

 

$

1,263

 

 

$

3,959

 

 

$

2,601

 

RSUs

 

 

19,927

 

 

 

 

 

 

19,927

 

 

 

 

Total stock-based compensation

 

$

23,838

 

 

$

1,263

 

 

$

23,886

 

 

$

2,601