Company: BLLN
Filing Date: 2025-09-17
Form Type: DRS/A
Source: 0001193125-25-206347
Chunk: 281

Company: BillionToOne, Inc.
Filing Date: 2025-09-17
Form: DRS/A
Chunk 281
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| Entities and individuals affiliated with Premji 
 Invest(4)                                       |     |                                           | 1,802,255 |     | $                        | 50,499,906 |

| (1) |     | Entities affiliated with Adams Street Partners that purchased shares of our Series D redeemable convertible preferred stock include: (i) Adams Street 2019 Direct Growth Equity Fund LP, (ii) Adams Street 2020                    
 Direct Growth Equity Fund LP, (iii) Adams Street 2021 Direct Growth Equity Fund LP, (iv) Adams Street 2022 Direct Growth Equity Fund LP, (v) Adams Street Global Private Markets Fund LP, (vi) Adams Street Growth Equity Fund VII 
 LP, and (vii) FCPR GF—Lumyna Private Equity World Fund. Thomas Bremner, a member of our Board of Directors, is a partner at Adams Street Partners.                                                                                 |

| (2) |     | Entities affiliated with Hummingbird Ventures that purchased shares of Series C redeemable convertible preferred stock include Hummingbird Dragons CommV. Firat Ileri, a member of our Board of Directors, is the managing 
 partner of Hummingbird Ventures.                                                                                                                                                                                           |

| (3) |     | Entities affiliated with Libertus Capital that purchased shares of our Series C redeemable convertible preferred stock include: (i) Libertus Capital I, and (ii) Libertus Capital II. Libertus holds greater than 
 5% of our capital stock.                                                                                                                                                                                          |

| (4) |     | Entities and individuals affiliated with Premji Invest that purchased shares of our Series D redeemable convertible preferred stock include: (i) Akshay Rai, (ii) Directed Trust Company FBO Eric Tong Roth IRA,           
 (iii) Eric Aisi Tong, (iv) Andrew Chang, (v) Wipro Enterprises Private Limited, (vi) T.K. Kurien, (vii) Sandesh Kaveripatnam, and (viii) Vedant Agrawal. Akshay Rai, a member of our Board of Directors, is Vice President 
 of Healthcare & Biotechnology Investments at Premji Invest.                                                                                                                                                                |

2022 convertible note financing In September 2022, we entered into convertible promissory note agreements whereby we sold and issued convertible promissory notes in an aggregate principal amount of $30.0 million (the 2022 Note Financing). Each convertible promissory note had an interest rate of 8% per annum. The aggregate principal