Company: BLLN
Filing Date: 2025-10-07
Form Type: S-1
Source: 0001193125-25-233697
Chunk: 372

Company: BillionToOne, Inc.
Filing Date: 2025-10-07
Form: S-1
Chunk 372
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|:----|:-------|--------:|:--|:----|:----------------|-----:|
| Nonvested as of January 1, 2023   |     |        |  14,584 |   |     | $               | 0.35 |
| Issued                            |     |        |       - |   |     |                 |    - |
| Vested                            |     |        | (14,584 | ) |     |                 | 0.35 |
| Forfeited                         |     |        |       - |   |     |                 |    - |
| Nonvested as of December 31, 2023 |     |        |       - |   |     |                 |    - |

There was no restricted stock award activity during the year ended December 31, 2024. Stock-Based Compensation Expense The table below shows stock-based compensation expense included in the statements of operations and comprehensive loss for the years ended December 31, 2023 and 2024 (in thousands):

|                                     |     |   |  2023 |     |   |  2024 |
|:------------------------------------|:----|:--|------:|:----|:--|------:|
| Cost of revenue                     |     | $ |   683 |     | $ | 1,183 |
| Research and development            |     |   | 1,450 |     |   | 2,341 |
| Selling, general and administrative |     |   | 2,721 |     |   | 4,838 |
| Total stock-based compensation      |     | $ | 4,854 |     | $ | 8,362 |

Options Subject to Early Exercise At the discretion of the Company’s Board of Directors, certain options may be exercisable immediately at the date of grant but are subject to a repurchase right, under which the Company may buy back any unvested shares at their original exercise price in the event of an employee’s termination prior to full vesting. The consideration received for an exercise of an unvested option is considered to be a deposit of the exercise price and the related dollar amount is recorded as a liability. The liabilities are reclassified into equity as the awards vest. As of December 31, 2023 and 2024, the liability was not material and included in accrued expenses and other current liabilities on the accompanying balance sheets related to 3,542 and 521