Company: BLLN
Filing Date: 2025-06-20
Form Type: DRS
Source: 0000950123-25-006095
Chunk: 320

Company: BillionToOne, Inc.
Filing Date: 2025-06-20
Form: DRS
Chunk 320
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 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 shares of early-exercised common stock options, respectively. Early exercised stock options are legally issued and outstanding and are included in issued and outstanding common shares. Secondary Sales of Common Stock During June 2024, investors of the Company acquired 52,750 shares of common stock at a price per share equal to $22.42 per share from employee stockholders. During July 2024, investors of the Company acquired an additional 22,302 shares of common stock at a price per share equal to $22.42 per share from a stockholder who was a former employee of the Company. As a result, the Company recorded a total of $0.4 million for the year ended December 31, 2024 in stock-based compensation expense for the difference between the price paid by these investors and the estimated fair value of the acquired common stock from stockholders on the date of the