Company: BLLN
Filing Date: 2025-10-17
Form Type: S-1/A
Source: 0001193125-25-242632
Chunk: 307

Company: BillionToOne, Inc.
Filing Date: 2025-10-17
Form: S-1/A
Chunk 307
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 list our Class A common stock on the Nasdaq Global Select Market under the trading symbol “BLLN,” and this offering is contingent
upon obtaining approval of such listing.

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Shares eligible for future sale Prior to this offering, no public market existed for our Class A common stock, and although we expect that our Class A common stock will be approved for listing on Nasdaq, we cannot assure investors that there will be an active public market for our Class A common stock following this offering. We cannot predict what effect, if any, sales of our shares in the public market or the availability of shares for sale will have on the market price of our Class A common stock. Future sales of substantial amounts of common stock in the public market, or the possibility of these sales or issuances occurring, could adversely affect the prevailing market price of our Class A common stock or impair our ability to raise equity capital. Upon the completion of this offering, based on the number of our shares outstanding as of June 30, 2025 and after giving effect to the Preferred Stock Conversion, the Reclassification and the Class B Stock Exchange, as if each event had occurred on June 30, 2025, we will have an aggregate of 39,462,629 shares of our Class A common stock (or 40,039,529 shares of our Class A common stock if the underwriters exercise in full their option to purchase additional shares) and an aggregate of 4,552,650 shares of our Class B common stock outstanding. This includes all shares of Class A common stock that we are selling in this offering, which shares may be resold in the public market immediately unless purchased by our affiliates, and assumes no additional exercise of outstanding options or warrants other than as described elsewhere in this prospectus. The remaining 40,169,279 shares of our Class A common stock (including 4,552,650 shares of Class A common stock issuable upon the conversion of outstanding Class B common stock) will be “restricted securities,” as that term is defined in Rule 144. Restricted securities are eligible for public sale only if they are registered under the Securities Act or if they qualify for an exemption from registration under Rules 144 or 701 under the Securities Act, which are summarized below. Substantially all of these shares will be subject to a lock-upperiod under the lock-upagreements and/or market stand-offagreements described below. As a result of these lock-upand market stand-offagreements, and subject to the provisions