Company: BLLN
Filing Date: 2025-06-20
Form Type: DRS
Source: 0000950123-25-006095
Chunk: 212

Company: BillionToOne, Inc.
Filing Date: 2025-06-20
Form: DRS
Chunk 212
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 Bosch, PhD                       |     |     | 50 |     | Senior Vice President of Laboratory Operations           |
| Non-employee directors                    |     |     |    |     |                                                          |
| Thomas Bremner(2)                         |     |     | 43 |     | Director                                                 |
| Firat Ileri(2)                            |     |     | 38 |     | Director                                                 |
| Krishna Swaroop Kolluri(2)                |     |     | 61 |     | Director                                                 |
| Akshay Rai                                |     |     | 41 |     | Director                                                 |

| (1) |     | Member of the audit committee immediately after the effectiveness of the registration statement of which this prospectus forms a part. |

| (2) |     | Member of the compensation committee. |

| (3) |     | Member of the nominating and corporate governance committee immediately after the effectiveness of the registration statement of which this prospectus forms a part. |

Executive officers and employee directors Oguzhan Atayis our Chief Executive Officer and Co-Founder,having led the Company since its inception in 2016, and also serves as the Chair of our Board of Directors. Dr. Atay received his PhD in Biology from Stanford University, where his work was published on the cover of Cell Systems. He graduated summa cum laude and Phi Beta Kappa from Princeton University with a bachelor’s in molecular biology and minors in physics, computer science, and applied mathematics. We believe that Dr. Atay is qualified to serve on our Board of Directors because of his experience as our co-founderand Chief Executive Officer, his co-developmentof our molecular counting platform, and his extensive knowledge of the precision diagnostics industry. David Tsaois our President, Chief Technology Officer and Co-Founder,having been with the Company since its inception in 2016, and also serves as a member of our Board of Directors. Dr. Tsao oversees all technology developments at BillionToOne. He received a PhD in bioengineering from Rice University, where he was awarded a nanobiology training fellowship. He graduated cum laude from Princeton University with a bachelor’s in physics and minors in biophysics and engineering management systems. While at Princeton, he was twice awarded the Shenstone Prize in physics. We believe that Dr. Tsao is qualified to serve on our Board of 169

Directors because of his co-development of our molecular counting platform, extensive technical expertise in molecular biology, and deep knowledge of