Company: BLLN
Filing Date: 2025-10-07
Form Type: S-1
Source: 0001193125-25-233697
Chunk: 294

Company: BillionToOne, Inc.
Filing Date: 2025-10-07
Form: S-1
Chunk 294
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otribe SPV I BTO, LLC; and (iii) 2,819,490 shares of                                                
 Class A common stock held by NeoTribe Ventures I, L.P., for itself and as nominee for NeoTribe Associates I, L.P. Krishna Swaroop Kolluri is the general partner for each of Neotribe Ignite Fund I, L.P. and NeoTribe Ventures I, L.P. and NeoTribe     
 Associates I, L.P., and the managing member of Neotribe SPV I BTO, LLC and may be deemed to have beneficial ownership of the shares held by each of them. The address for each of the entities and individuals listed in this footnote is 1300 El Camino 
 Real, Suite 100, Menlo Park, California 94025.                                                                                                                                                                                                           |

221

Description of capital stock The following is a summary of our capital stock, certain provisions of our Post-IPOCertificate of Incorporation and Post-IPOBylaws as each will be in effect upon the completion of this offering, our IRA, and relevant provisions of Delaware law. Because it is only a summary, it does not contain all the information that may be important to you. These descriptions are qualified in their entirety by our Post-IPOCertificate of Incorporation, our Post-IPOBylaws, and our IRA, which are each filed as exhibits to our registration statement of which this prospectus is a part, as well as the relevant provisions of the DGCL. General Immediately prior to the completion of this offering, our Post-IPOCertificate of Incorporation will provide for two series of common stock. In addition, our Post-IPOCertificate of Incorporation will authorize shares of undesignated preferred stock, the rights, preferences, and privileges of which may be designated from time to time by our Board of Directors. Immediately prior to the completion of this offering, our authorized capital stock will consist of shares, all with a par value of $ per share, of which:

| • |     | shares are designated as Class A common stock; |

| • |     | shares are designated as Class B common stock; and |

| • |     | shares are designated as preferred stock. |

Common stock Upon completion of this offering, we will have two series of authorized common stock: Class A common stock and Class B common stock. The rights of the holders of our Class A common stock and our Class B common stock are identical, except with respect to voting, conversion and transfer rights.