Company: BLLN
Filing Date: 2025-09-17
Form Type: DRS/A
Source: 0001193125-25-206347
Chunk: 118

Company: BillionToOne, Inc.
Filing Date: 2025-09-17
Form: DRS/A
Chunk 118
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 Stock Exchange, shares of our Class A common stock issuable upon the conversion of shares of Class B common stock) will have certain
rights to require us to register the sale of Class A common stock held by such stockholders, including in connection with underwritten offerings. Sales of significant amounts of stock in the public market upon expiration of lock-up agreements and market stand-off provisions, the perception that such sales may occur, or early release of any lock-up
agreements or market

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stand-offprovisions, could adversely affect prevailing market prices of our Class A common stock or make it more difficult for you to sell your shares of Class A common stock at a time and price that you deem appropriate. See the section titled “Shares eligible for future sale.” The market price of our Class A common stock may drop significantly when the restrictions on resale by our existing stockholders lapse, including in the event of a partial release under the lock-upagreement or market stand-offprovisions, if we register certain of our stockholders’ shares of our Class A common stock for resale, or if there is an expectation that such a lapse of resale restrictions or registration of shares will occur. A decline in the trading price of our Class A common stock might impede our ability to raise capital through the issuance of additional shares of our Class A common stock or other equity securities and may impair your ability to sell shares of our Class A common stock at a price higher than the price you paid for them or at all. Anti-takeover provisions in our governing documents and under Delaware law could make an acquisition of our company more difficult, limit attempts by our stockholders to replace or remove our current management, and depress the market price of our Class A common stock. We are a Delaware corporation, and the anti-takeover provisions of Delaware law impose various impediments to the ability of a third party to acquire control of us, even if a change of control would be beneficial to our existing stockholders. In addition, our Post-IPOCertificate of Incorporation and Post-IPOBylaws will contain provisions that could have the effect of rendering more difficult, delaying or preventing an acquisition deemed undesirable by our Board of Directors, including transactions in which stockholders might otherwise receive a premium for their shares. Among others, our Post-IPOCertificate of Incorporation and Post-IPOBylaws will include the following provisions:

| • |     | the dual-class structure that provides holders of shares of our Class B common stock with the ability to significantly                                               
 influence the outcome of matters