Company: BLLN
Filing Date: 2025-06-20
Form Type: DRS
Source: 0000950123-25-006095
Chunk: 105

Company: BillionToOne, Inc.
Filing Date: 2025-06-20
Form: DRS
Chunk 105
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-outstanding capital stock; and                                                                    |

| • |     | the authorization of undesignated or “blank check” preferred stock, the terms of which may be established and                                                                
 shares of which may be issued without further action by our stockholders, which could be used to significantly dilute the ownership and voting rights of a hostile acquirer. |

71

These provisions, alone or together, could delay or prevent hostile takeovers and changes in control or changes in our
management. In addition, as a Delaware corporation, we are also subject to Section 203 of the Delaware General Corporation Law (DGCL), which prevents stockholders holding more than 15% of our outstanding capital stock from engaging in certain
business combinations unless (i) prior to the time such stockholder became an interested stockholder, the Board of Directors approved the transaction that resulted in such stockholder becoming an interested stockholder, (ii) upon
consummation of the transaction that resulted in such stockholder becoming an interested stockholder, the interested stockholder owned 85% of the common stock or (iii) following Board of Directors approval, the business combination receives the
approval of the holders of at least two-thirds of our outstanding common stock not held by such interested stockholder.

Any
provision of our Post-IPO Certificate of Incorporation, Post-IPO Bylaws or Delaware law that has the effect of delaying, preventing, or deterring a change in control
could limit the opportunity for our stockholders to receive a premium for their shares of our common stock. Even in the absence of a takeover attempt, the existence of these provisions may adversely affect the prevailing market price of our common
stock if they are viewed by investors as discouraging future takeover attempts or other transactions that may be in the best interests of our stockholders or that may otherwise enable them to obtain a greater return on their investment, which may
impair your ability to sell shares of our Class A common stock at a price greater than the price you paid for them or at all.

Our Post-IPOCertificate of Incorporation, which will be in effect at the completion of this offering, will provide that the Court of Chancery of the State of Delaware and the U.S. federal district courts are the exclusive forums for substantially all disputes between us and our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our Post-IPO Certificate of Incorporation, which will be in effect at the