Company: BLLN
Filing Date: 2025-10-07
Form Type: S-1
Source: 0001193125-25-233697
Chunk: 157

Company: BillionToOne, Inc.
Filing Date: 2025-10-07
Form: S-1
Chunk 157
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, or 51%, for the six months ended June 30, 2025 compared to the six months ended June 30, 2024. The increase was primarily due to a $15.9 million increase in salaries, commissions and related expenditures, a $2.7 million increase in facilities and other costs, a $2.2 million increase in professional and consulting fees, and a $0.6 million increase in stock-based compensation expense. These increases were driven by a net increase of 112 employees during the periods presented to support our sales and marketing strategies. Interest income

|                 |     | Six months ended       
 June 30,               
 2024                   
 (dollars in thousands) |       |     | 2025 |       |     | $ Change |     |     | % Change |     |
|:----------------|:----|:-----------------------|------:|:----|:-----|------:|:----|:---------|----:|:----|:---------|:----|
| Interest income |     | $                      | 2,196 |     | $    | 2,957 |     | $        | 761 |     |          | 35% |

107

Interest income increased by $0.8 million, or 35%, for the six months ended June 30, 2025 compared to the six months ended June 30, 2024. The increase was primarily due to higher average cash and cash equivalents balances. Interest expense

|                  |     | Six months ended       
 June 30,               
 2024                   
 (dollars in thousands) |        |   |     | 2025 |     |   |     | $ Change |       |     | % Change |       |
|:-----------------|:----|:-----------------------|:-------|:--|:----|:-----|:----|:--|:----|:---------|------:|:----|:---------|:------|
| Interest expense |     | $                      | (1,917 | ) |     | $    | (72 | ) |     | $        | 1,845 |     |          | (96)% |

Interest expense decreased $1.8 million, or 96%, for the six months ended June 30, 2025 compared to the six months ended June 30, 2024. The decrease was attributable to the payoff of the Western Alliance Bank debt in August 2024; the