Company: BLLN
Filing Date: 2025-09-17
Form Type: DRS/A
Source: 0001193125-25-206347
Chunk: 289

Company: BillionToOne, Inc.
Filing Date: 2025-09-17
Form: DRS/A
Chunk 289
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. Furthermore, Adams Street Partners, LLC, the 
 Sous- Délégataire Financier of the Délégataire Financier of the management company of FCPR GF—Lumyna Private Equity World Fund (Lumyna and together with the U.S. Funds, the Funds) and, as a result, may be deemed to                                   
 beneficially own the shares held by Lumyna. Thomas S. Bremner, Jeffrey T. Diehl, Brian Dudley, Elisha P. Gould, Robin Murray and Fred Wang, each of whom is a partner of Adams Street Partners, LLC (or a subsidiary thereof), may be deemed to have     
 shared voting and investment power over the shares held by the Funds. The address for each entity referenced above is 1 North Wacker Drive, Suite 2200, Chicago, IL 60606-2807.                                                                          |

| (6) |     | Consists of (i) the shares of Class A common stock referenced in footnote 10 and (ii)    shares of Class A common stock held directly by Mr. Ileri. |

| (7) |     | Consists of the shares of Class A common stock referenced in footnote 13. |

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| (8) |     | Consists of (i)    shares of Class A common stock held directly by Mr. Rai and (ii)    shares of Class A common stock held by Wipro Enterprises Private                                                                                    
 Limited (Wipro), of which Mr. Rai is the nominee/investor director appointed by Wipro Enterprises Limited. Mr. Rai will not have voting or dispositive control of the securities described in clause (ii) of the prior sentence while such 
 securities are held by Wipro and thus disclaims beneficial ownership of such securities The address for each of the entities and individuals listed in this footnote is 2180 Sand Hill Road, Ste. 100, Menlo Park, California 94025.       |

| (9) |     | Includes    shares of Class A common stock issuable upon exercise of stock options within 60 days of    , 2025. |

| (10) |     | Consists of (i)    shares of Class A common stock held by Hummingbird Opportunity Fund II CommV; (ii)