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Quarterly Financial Information (Unaudited) (Tables)
12 Months Ended
Dec. 31, 2025
Quarterly Financial Information (Unaudited)  
Schedule of quarterly financial information

The following table summarizes our unaudited quarterly financial information for the periods shown below (in thousands, except per share data):

Fiscal Year 2025

  ​ ​ ​

December 31, 

  ​ ​ ​

September 30, 

  ​ ​ ​

June 30, 

  ​ ​ ​

March 31, 

Revenue

$

2,243

$

1,161

$

1,296

$

1,581

Gross profit (loss)

 

375

 

(411)

 

(761)

 

(265)

Net loss

 

(8,615)

 

(7,354)

 

(7,666)

 

(8,638)

Net loss per share, basic and diluted

 

(0.12)

 

(0.09)

 

(0.10)

 

(0.11)

Fiscal Year 2024

  ​ ​ ​

December 31, 

  ​ ​ ​

September 30, 

  ​ ​ ​

June 30, 

  ​ ​ ​

March 31, 

Revenue

$

1,272

$

1,386

$

1,093

$

2,004

Gross profit (loss)

 

(4,954)

 

(260)

 

(333)

 

(53)

Net loss

 

(13,656)

 

(9,222)

 

(40,612)

 

(10,048)

Net loss per share, basic and diluted

 

(0.16)

 

(0.14)

 

(0.62)

 

(0.16)

Fiscal Year 2023

  ​ ​ ​

December 31, 

  ​ ​ ​

September 30, 

  ​ ​ ​

June 30, 

  ​ ​ ​

March 31, 

Revenue

$

1,067

$

2,180

$

4,691

$

4,191

Gross profit (loss)

 

(4,245)

 

(238)

 

972

 

876

Net loss

 

(19,880)

 

(10,983)

 

(9,045)

 

(10,241)

Net loss per share, basic and diluted

 

(0.32)

 

(0.17)

 

(0.14)

 

(0.16)