Company: BLLN
Filing Date: 2025-10-07
Form Type: S-1
Source: 0001193125-25-233697
Chunk: 402

Company: BillionToOne, Inc.
Filing Date: 2025-10-07
Form: S-1
Chunk 402
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 and expenses |     |            |      * |
| Transfer Agent fees and expenses         |     |            |      * |
| Miscellaneous expenses                   |     |            |      * |
| Total                                    |     | $          |      * |

| * |     | To be completed by amendment |

Item 14. Indemnification of directors and officers Section 145 of the DGCL authorizes a court to award, or a corporation’s Board of Directors to grant, indemnity to directors and officers under certain circumstances and subject to certain limitations. The terms of Section 145 of the DGCL are sufficiently broad to permit indemnification under certain circumstances for liabilities, including reimbursement of expenses incurred, arising under the Securities Act. As permitted by the DGCL, our Post-IPOCertificate of Incorporation and Post-IPOBylaws, as each will be in effect immediately prior to the completion of this offering, contain provisions relating to the limitation of liability and indemnification of our directors and officers. The Post-IPOCertificate of Incorporation will provide that our directors will not be personally liable to us or our stockholders for monetary damages for any breach of fiduciary duty as a director, except for liability:

| • |     | for any breach of the director’s duty of loyalty to us or our stockholders; |

| • |     | for acts or omissions not in good faith or that involve intentional misconduct or a knowing violation of law; |

| • |     | in respect of unlawful payments of dividends or unlawful stock repurchases or redemptions as provided in Section 174 
 of the DGCL;                                                                                                         |

| • |     | an officer in any action by or in the right of the Company; or |

| • |     | for any transaction from which the director derives any improper personal benefit. |

Our Post-IPOCertificate of Incorporation also will provide that if Delaware law is amended after the approval by our stockholders of the Post-IPOCertificate of Incorporation, to authorize corporate action further eliminating or limiting the personal liability of directors, then the liability of our directors will be eliminated or limited to the fullest extent permitted by Delaware law. II-1

Our Post-IPOBylaws will provide that we will indemnify our directors and officers to the fullest extent permitted by Delaware law, as it now exists or may in the future be amended, against all expenses and liabilities reasonably incurred in connection with their service for or on our behalf. Our Post-IPOBylaws will provide that we shall advance the expenses incurred