Company: BLLN
Filing Date: 2025-08-11
Form Type: DRS/A
Source: 0000950123-25-007483
Chunk: 27

Company: BillionToOne, Inc.
Filing Date: 2025-08-11
Form: DRS/A
Chunk 27
---
 to purchase additional shares of Class A common stock in full). |

| Class B common stock to be outstanding immediately after this offering | shares. |

| Total Class A and Class B common stock to be outstanding immediately after this offering | shares (or   shares if the underwriters exercise their option to purchase additional shares of Class A common stock in full). |

| Use of proceeds | We estimate the net proceeds from the sale of shares of our Class A common stock this offering will be approximately $   million, or $   million if the underwriters exercise                                                      
 their option to purchase additional shares of Class A common stock in full, assuming an initial public offering price of $   per share, which is the midpoint of the estimated offering price range set forth on the cover page of 
 this prospectus, and after deducting the underwriting discounts and commissions and estimated offering expenses payable by us.                                                                                                     |

| We currently intend to use the net proceeds from this offering, together with our existing cash and cash equivalents, for working capital and other general corporate purposes, including to fund our growth, research and 
 development initiatives, technology development, working capital, and operating expenses. See the section titled “Use of proceeds” for additional information.                                                             |

| Voting rights | Each share of our Class A common stock entitles its holder to one vote on all matters to be voted on by stockholders generally. Each share of our Class B common stock entitles its holder to 10 votes on all 
 matters to be voted on by stockholders generally.                                                                                                                                                             |

| Holders of our Class A common stock and Class B common stock will generally vote together as a single class, unless otherwise required by law or our amended and restated certificate of incorporation (the Post-IPO Certificate of Incorporation). |

13

| Oguzhan Atay, our Chief Executive Officer and Co-Founder, and David Tsao, our Chief Technology Officer and Co-Founders (each, a Founder, and together, the Co-Founders), will beneficially own 100% of our outstanding Class B common stock and, as a result, Drs. Atay and Tsao will beneficially own approximately   % and approximately 
 %, respectively, of the voting power of our outstanding capital stock immediately following this offering, assuming no exercise of the underwriters’ option to purchase additional shares of Class A common stock.                                                                                                                         |

| As