Company: BLLN
Filing Date: 2025-09-17
Form Type: DRS/A
Source: 0001193125-25-206347
Chunk: 292

Company: BillionToOne, Inc.
Filing Date: 2025-09-17
Form: DRS/A
Chunk 292
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0 El Camino Real, Suite 100, Menlo Park, California 94025.                                                                                                                                               |

216

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 classes 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. As of June 30, 2025, after giving effect to (i) the Preferred Stock Conversion, (ii) the Reclassification, (iii) the Class B Stock Exchange, as if each event had occurred on June 30, 2025, we had outstanding shares of Class A common stock and shares of Class B common stock. Dividend rights Subject to preferences that may apply to shares of preferred stock outstanding at the time, the holders of outstanding shares of our Class A common stock and Class B common stock are entitled to receive dividends out of funds legally available if our Board of Directors, in its discretion, determines to issue dividends and only then at the times and in the amounts that our Board of Directors may determine. See the section