Company: BLLN
Filing Date: 2025-10-07
Form Type: S-1
Source: 0001193125-25-233697
Chunk: 360

Company: BillionToOne, Inc.
Filing Date: 2025-10-07
Form: S-1
Chunk 360
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6.5% and 6.5%, respectively. As of December 31, 2024, future lease payments under financing leases were as follows (in thousands):

| Year ending December 31:                     
 2025                                         |     |   | 1,931 |   |
|:---------------------------------------------|:----|:--|------:|:--|
| 2026                                         |     |   |   536 |   |
| 2027                                         |     |   |   377 |   |
| Total lease payments                         |     | $ | 2,844 |   |
| Less: interest expense                       |     |   |  (144 | ) |
| Present value of financing lease liabilities |     | $ | 2,700 |   |

Other information related to the Company’s financing leases were as follows for the years ended December 31 (in thousands):

|                                                             |     |   |  2023 |     |   |  2024 |
|:------------------------------------------------------------|:----|:--|------:|:----|:--|------:|
| Amortization of                                             
 right-of-use assets:                                        |     | $ | 3,085 |     | $ | 3,436 |
| Operating cash flows from financing leases (interest paid): |     |   |   361 |     |   |   243 |
| Total finance lease cost                                    |     | $ | 3,446 |     | $ | 2,619 |

(9) Convertible Notes In September 2022, the Company entered into a Note Purchase Agreement for unsecured Convertible Promissory Notes (the “Notes”) to several note holders (the “Note Holders”) with a principal sum of $30.0 million together with interest thereon from the date of the Notes. The Notes accrue interest at a rate of 8.0% per annum, simple interest. The Notes were scheduled to mature on September 20, 2024, and the Company may not make prepayments without written consent of the majority Note holders. F-25

B ILLIONT OO NE, INC.

Notes to Financial Statements

Holders of the Notes could have converted their notes into shares of common stock at or after an initial
public offering at a conversion price dependent on the initial price per share offered in connection with the initial public offering; or 70% of the price per share payable to common stockholders in connection with another