Company: BLLN
Filing Date: 2025-06-20
Form Type: DRS
Source: 0000950123-25-006095
Chunk: 303

Company: BillionToOne, Inc.
Filing Date: 2025-06-20
Form: DRS
Chunk 303
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243 |     |             |  16,025 |
| Series C   |     |            |  6,079,919 |     |               |  5,628,825 |     |              | 143,268 |     |             | 143,500 |
| Series C-1 |     |            |  1,726,823 |     |               |  1,726,823 |     |              |  39,886 |     |             |  33,870 |
| Series D   |     |            |  4,656,233 |     |               |  4,656,233 |     |              | 129,996 |     |             | 156,563 |
| Total      |     |            | 29,544,989 |     |               | 29,084,235 |     | $            | 419,409 |     | $           | 422,458 |

F-21

B ILLIONT OO NE, INC. Notes to Financial Statements The rights, preferences and privileges of the Company’s redeemable convertible preferred stock are as follows:

| (i) | Dividends |

The holders of shares of redeemable convertible preferred stock shall be entitled to receive dividends prior and in preference to any declaration of dividends on common stock. Dividends are payable only when and if declared by the Company’s Board of Directors and are not cumulative. After dividends paid on redeemable convertible preferred stock, any dividends or distribution should be distributed to the holders of common and redeemable convertible preferred stock on an as-convertedbasis. No dividends have been declared or paid through December 31, 2024.

| (ii) | Liquidation Preference |

In the event of liquidation as approved by the Board of Directors, dissolution, or winding up of the Company, the holders of Series D shall be entitled to receive out of the proceeds or assets of this corporation available for distribution to its stockholders, prior and in preference to any distribution of proceeds to the holders of common stock, an amount per share equal the sum of 1.2 times the original issue price of $28.0204, plus declared but unpaid dividends on such shares and (ii) the holders of each other series of redeemable convertible preferred stock shall be entitled to receive the assets of the Company available for distribution, prior and in preference to any distribution of proceeds to the holders of common stock, an amount per share equal to the sum of