Company: BLLN
Filing Date: 2025-08-11
Form Type: DRS/A
Source: 0000950123-25-007483
Chunk: 270

Company: BillionToOne, Inc.
Filing Date: 2025-08-11
Form: DRS/A
Chunk 270
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�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)    shares of Class A common stock held by Hummingbird                                                                                              
 Ventures III CommV; (iii)    shares of Class A common stock held by Hummingbird Dragons CommV; (iv)    shares of Class A common stock held by Hummingbird Collective CommV; and                                                                          
 (v)    shares of Class A common stock held by HB&Q NV (HB&Q COMPARTMENT III). Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV,                                       
 Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den                  
 Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The address for each of the entities and individuals listed in 
 this footnote is Square Victoria Regain 1, 1210 Sint-Joost-ten