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Segment and Geographic Information
 9 Months Ended
Sep. 30, 2025
Segment Reporting [Abstract]  
Segment and Geographic Information

15. Segment and Geographic Information

Operating Segments

Operating segments are defined as components of an entity for which separate financial information is available and that is regularly reviewed by the Chief Operating Decision Maker (“CODM”) in deciding how to allocate resources to an individual segment and in assessing performance. The Company’s CODM is its Chief Executive Officer. The Company has determined that it operates in one operating and reportable segment, as the CODM reviews financial information presented on a consolidated basis for purposes of making operating decisions, allocating resources, and evaluating financial performance. The CODM uses operating income (loss) as the measure of financial performance and for resource allocation decisions.

Significant Expenses

The Company concluded it operates as one operating and reportable segment based on the information regularly reviewed by the CODM for decision making, resource allocation, and evaluating financial performance. The information included is categorized into different

significant expense lines such as compensation and benefits, lab and equipment, professional services, general and administrative, facility, and sales and marketing. The Company reported the following significant expenses to the CODM:

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Three Months Ended September 30, 

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Nine Months Ended September 30, 

(in thousands)

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2025

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2024

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2025

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2024

Compensation and benefits

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$

6,400

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$

8,558

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$

20,699

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$

25,515

Stock-based compensation

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​

1,815

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​

6,530

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​

8,543

​

​

16,116

Lab and equipment

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​

4,003

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​

9,897

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​

12,886

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​

12,984

General and administrative

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​

3,509

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​

4,281

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​

11,502

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​

11,829

Professional services

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​

4,871

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2,829

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​

17,036

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​

7,081

Facility

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1,540

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​

1,941

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​

4,531

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​

5,967

Marketing and sales

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​

147

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​

181

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​

525

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​

623

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$

22,285

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$

34,217

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$

75,722

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$

80,115

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Geographic & Concentration Information

For the three and nine months ended September 30 2025, revenue outside of the United States, based on customer billing address, was 98% and 99% of total revenue, respectively. For the three and nine months ending September 30, 2025, there was one customer that accounted for 51% and 59%, respectively, of total revenue and a second customer that accounted for 35% and 15%, respectively, of total revenue as well as 47% of accounts receivable as of September 30, 2025. For the nine months ending September 30, 2025, there was a third customer that accounted for 19% of total revenue as well as 40% of accounts receivable as of September 30, 2025.