Company: BLLN
Filing Date: 2025-06-20
Form Type: DRS
Source: 0000950123-25-006095
Chunk: 137

Company: BillionToOne, Inc.
Filing Date: 2025-06-20
Form: DRS
Chunk 137
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---------|:------|
|                                           |     | -dollars in thousands |         |   |     |      |      |   |     |          |        |     |          |       |
| Change in fair value of convertible notes |     | $                     | (12,921 | ) |     | $    | (835 | ) |     | $        | 12,086 |     |          | (94)% |

Change in fair value of convertible notes decreased $12.1 million, or 94%, for the year ended December 31, 2024 compared to the year ended December 31, 2023. The decrease was due to a change in fair value of the 2022 Convertible Notes that were extinguished in 2024; we elected to include interest expense in the change in fair value of the convertible notes. Other expense, net

|                    |     | Year ended            
 December 31,          
 2023                  |      |   |     | 2024 |        |   |     | $ Change |      |   |     | % Change |      |
|:-------------------|:----|:----------------------|:-----|:--|:----|:-----|:-------|:--|:----|:---------|:-----|:--|:----|:---------|:-----|
|                    |     | -dollars in thousands |      |   |     |      |        |   |     |          |      |   |     |          |      |
| Other expense, net |     | $                     | (442 | ) |     | $    | (1,145 | ) |     | $        | (703 | ) |     |          | 159% |

Other expense, net increased $0.7 million, or 159%, for the year ended December 31, 2024 compared to the year ended December 31, 2023, which was primarily driven by increases in the fair value of our common stock warrant liability of $0.5 million, loss from divestiture of subsidiary of $0.1 million and a loss on disposal of fixed assets of $0.1 million for the year ended December 31, 2024. Non-GAAPfinancial measures We use certain non-GAAP financialmeasures to supplement our financial statements, which are presented in accordance with GAAP. These non-GAAP financialmeasures include non-GAAPoperating loss and non-GAAPnet loss