Company: BLLN
Filing Date: 2025-08-11
Form Type: DRS/A
Source: 0000950123-25-007483
Chunk: 125

Company: BillionToOne, Inc.
Filing Date: 2025-08-11
Form: DRS/A
Chunk 125
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ments to complete any such transactions.

Our expected use of the net proceeds from this offering represents our intentions based upon our current plans and
business conditions, which could change in the future as our plans and business conditions evolve. As of the date of this prospectus, we cannot predict with certainty all of the particular uses for the net proceeds to be received upon the completion
of this offering or the amounts that we will actually spend on the uses set forth above. Our management will have broad discretion over the use of the net proceeds from this offering. See the section titled “Risk factors—Risks related to
this offering and our Class A common stock—We will have broad discretion in the use of the net proceeds from this offering and may not use them effectively.” Pending our use of the net proceeds from this offering, we intend to invest
the net proceeds in short-term, interest-bearing, investment-grade securities, certificates of deposit, or government securities.

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Dividend policy

We have never declared or paid any dividends on our capital stock, and we do not currently intend to pay any cash dividends on our Class A common stock and
Class B common stock in the foreseeable future. We currently intend to retain all available funds and any future earnings to support operations and to finance the growth and development of our business. Any future determination to pay dividends
will be made at the discretion of our Board of Directors, subject to applicable laws, and will depend upon, among other factors, our results of operations, financial condition, contractual restrictions, and capital requirements. In addition, the
terms of the Note Purchase Agreement place restrictions on our ability to pay cash dividends on our capital stock. Furthermore, we may, from time to time, enter into other loan or credit agreements or similar borrowing arrangements that may further
restrict our ability to declare or pay dividends on our Class A common stock and Class B common stock.

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Capitalization The following table sets forth our cash and cash equivalents and our capitalization as of June 30, 2025:

| • |     | on an actual basis; |

| • |     | on an as adjusted basis to give effect to (i) the Preferred Stock Conversion, (ii) the Reclassification,                                                                                  
 (iii) the Class B Stock Exchange, (iv) the conversion of the A-6 Warrant to a warrant to purchase common stock and the related reclassification of the warrant liability to stockholders’ 
 equity and (v) the filing and effectiveness of our Post-IPO Certificate of Incorpor