Company: BLLN
Filing Date: 2025-09-17
Form Type: DRS/A
Source: 0001193125-25-206347
Chunk: 280

Company: BillionToOne, Inc.
Filing Date: 2025-09-17
Form: DRS/A
Chunk 280
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 the purchase date.

Other provisions

Employees may end their participation in our ESPP at any
time. Participation ends automatically upon termination of employment with us. If we experience a change in control, our ESPP will end and shares will be purchased with the payroll deductions accumulated to date by participating employees. Our Board
of Directors or our compensation committee may amend or terminate our ESPP at any time.

208

Certain relationships and related party transactions The following is a description of transactions since January 1, 2022, or currently proposed, to which we have been or will be a participant, in which the amount involved exceeded $120,000 and in which any of our executive officers, directors or beneficial holders of more than 5% of our capital stock (or any immediate family member of, or person sharing the household with, any of these individuals or entities), which we collectively refer to as a related party, had or will have a direct or indirect material interest, other than compensation arrangements for our directors and executive officers, which are disclosed elsewhere in this prospectus. Series D redeemable convertible preferred stock financing In May 2024, we issued and sold an aggregate of 4,656,233 shares of our Series D redeemable convertible preferred stock at a cash purchase price of $28.0204 per share for an aggregate purchase price of $130.5 million (the Series D Financing). Each share of Series D redeemable convertible preferred stock will convert automatically into a share of our Class A common stock, on a one-for-one basis, immediately prior to the completion of this offering. The following table summarizes purchases of our Series D redeemable convertible preferred stock by entities affiliated with certain of our directors and holders of more than 5% of our capital stock.

| Purchaser                                       |     | Series D redeemable convertible preferred 
 stock                                     
 Number of shares                          |           |     | Aggregate purchase price |            |
|:------------------------------------------------|:----|:------------------------------------------|----------:|:----|:-------------------------|-----------:|
| Entities affiliated with Adams Street           
 Partners(1)                                     |     |                                           |   535,321 |     | $                        | 14,999,908 |
| Hummingbird Ventures(2)                         |     |                                           |   446,103 |     | $                        | 12,499,984 |
| Libertus Capital I(3)                           |     |                                           |   249,817 |     | $                        |  6,999,972 |