Company: BLLN
Filing Date: 2025-08-11
Form Type: DRS/A
Source: 0000950123-25-007483
Chunk: 269

Company: BillionToOne, Inc.
Filing Date: 2025-08-11
Form: DRS/A
Chunk 269
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�shares of Class A common stock held by Adams                                                           
 Street 2022 Direct Growth Equity Fund LP; (v)    shares of Class A common stock held by Adams Street Global Private Markets Fund LP; (vi)    shares of Class A common stock held by Adams                                                                
 Street Growth Equity Fund VII LP; and (vi)    shares of Class A common stock held by FCPR GF—Lumyna Private Equity World Fund. Adams Street Partners, LLC is the managing member of the general partner of each of                                       
 Adams Street 2019 Direct Growth Equity Fund LP, Adams Street 2020 Direct Growth Equity Fund LP, Adams Street 2021 Direct Growth Equity Fund LP, Adams Street 2022 Direct Growth Equity Fund LP, Adams Street Growth Equity Fund VII LP, and Adams Street 
 Private Equity Navigator Fund LLC (f/k/a Adams Street Global Private Markets Fund LP) (collectively, the U.S. Funds) and, as a result, may be deemed to beneficially own the shares held by the U.S. Funds. 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. |

209

| (8) |     | Consists of (i)   �