v3.26.1
COMMON STOCK, STOCK-BASED COMPENSATION AND WARRANTS (Tables)
6 Months Ended
Jun. 30, 2026
COMMON STOCK, STOCK-BASED COMPENSATION AND WARRANTS  
Schedule of warrants fair value assumptions

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Series A Right Warrant

  ​ ​ ​

Series B Right Warrant

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Common Stock Price as of Issuance Date

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$

0.94

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$

0.94

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Risk-Free Rate

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​

4.31

%

 

4.27

%

Dividend Rate

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​

0.00

%

 

0.00

%

Volatility

​

​

88.90

%

 

97.19

%

Minimum Exercise Price

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$

1.00

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$

2.00

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Maximum Exercise Price

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$

2.00

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$

4.00

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Formula for Exercise Price

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​

90% of the 5-day volume weighted average stock price as of the exercise date rounded down to the nearest cent, not to fall outside the range of the maximum and minimum exercise prices.

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Schedule of stock-based compensation expense

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Three Months Ended June 30,

Stock-based compensation expense by category

  ​ ​ ​

2026

  ​ ​ ​

2025

​

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(amounts, in thousands)

Cost of goods sold

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$

18

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$

32

Research and development, net of grant income

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72

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110

Selling, general and administrative

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278

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429

Total stock-based compensation expense

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$

368

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$

571

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Six Months Ended June 30,

Stock-based compensation expense by category

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2026

  ​ ​ ​

2025

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(amounts, in thousands)

Cost of goods sold

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$

49

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$

88

Research and development, net of grant income

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​

166

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247

Selling, general and administrative

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697

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1,056

Total stock-based compensation expense

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$

912

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$

1,391

Schedule of stock options activity

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Weighted

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Weighted

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Average

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Average

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Remaining

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Exercise Price

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Contractual

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  ​ ​ ​

Shares

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per Share

  ​ ​ ​

Life (Years)

Outstanding, December 31, 2025

 

10,988,604

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$

3.58

​

5.98

Granted

 

799,847

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​

0.65

 

—

Exercised

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—

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—

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—

Forfeited

 

(100,666)

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​

1.56

 

—

Expired

 

(929,115)

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​

3.81

 

—

Outstanding, June 30, 2026

 

10,758,670

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$

3.36

​

6.08

Schedule of options fair value assumptions

The Company estimated the fair value of stock options granted during the six months ended June 30, 2026, which was approximately $0.38 million, using a Black-Scholes pricing model with the following inputs:

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Exercise price (per share)

  ​ ​ ​

$

0.65 - $0.67

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Expected volatility

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80.9

%

Expected term*

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6.5 years

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Risk-free rate

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3.74% - 4.04

%

Dividends

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0

%

*The expected term of the options granted is derived using the “simplified method” which computes expected term as the average of the sum of the vesting term plus the contract term. The simplified method is used as the Company’s employee exercise history may not be indicative for estimating future exercises. In addition, the Company recognizes forfeitures as they occur.
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Schedule of intrinsic value

The intrinsic value is calculated as the difference between the market value of the shares as of June 30, 2026 of $0.37 and the exercise price of the shares.

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Options Outstanding

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Number

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Weighted

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Weighted

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Aggregate

Range of

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Outstanding at

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Average

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Average

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Intrinsic

Exercise

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June 30, 

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Exercise

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Remaining

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Value

Price

  ​ ​ ​

2026

  ​ ​ ​

Price

  ​ ​ ​

Life (Years)

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(in thousands)

$0.65 - $12.25

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10,758,670

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$

3.36

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6.08

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$

—

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Options Exercisable

Number

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Weighted

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Aggregate

Exercisable at

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Average

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Intrinsic

June 30, 

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Exercise

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Value

2026

  ​ ​ ​

Price

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(in thousands)

8,814,338

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$

3.79

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$

—

Schedule of company's non-vested options

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Weighted

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Average

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Exercise

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Shares

  ​ ​ ​

Price

Non-vested, December 31, 2025

 

2,319,974

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$

1.03

Granted

 

799,847

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$

0.65

Forfeited

 

(100,666)

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$

1.56

Vested

 

(1,074,823)

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$

0.75

Non-vested, June 30, 2026

 

1,943,332

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$

0.95

Schedule of outstanding balance of restricted stock units

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Weighted

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Average

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Grant Date

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Total

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Fair Value

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(amounts in thousands, except share data)

Outstanding, December 31, 2025

 

2,754,000

 

5.60

Granted

 

73,000

 

0.65

Vested

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—

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—

Forfeited

 

(184,750)

 

4.39

Outstanding, June 30, 2026

 

2,642,250

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5.66

Schedule of the restricted stock unit activity

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Weighted

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Average

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Grant Date

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Shares

  ​ ​ ​

Fair Value

Non-vested, January 1, 2026

 

775,301

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$

0.99

Granted

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25,000

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0.65

Vested

 

(151,500)

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​

0.93

Unvested shares forfeited

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(40,000)

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​

1.03

Non-vested, June 30, 2026

 

608,801

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$

0.98