CIK 0002070849 · Non-accelerated filer<br>Emerging growth company
BillionToOne, Inc.
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- BLLN
- Exchange
- Nasdaq
- Industry
- Services-Medical Laboratories
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 811082020
- Phone
- 650-460-2551
- Business address
- 1035 O'BRIEN DRIVE, MENLO PARK, CA
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $26,737,121
- in 19 filings, $26.7M under 10b5-1 plans
Net −$26,737,121. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −4,009 | $108.25 | $434K | 19,510 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −5,720 | $109.08 | $624K | 13,790 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −3,803 | $110.29 | $419K | 9,987 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −1,117 | $110.98 | $124K | 8,870 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −536 | $112.44 | $60K | 8,334 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −974 | $107.34 | $105K | 7,360 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,075 | $108.43 | $225K | 5,285 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,451 | $109.11 | $267K | 2,834 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,223 | $110.35 | $245K | 611 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −411 | $111.03 | $46K | 200 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −200 | $112.39 | $22K | 0 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,667 | $113.17 | $302K | 143,834 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,667 | $113.17 | $302K | 141,167 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Option exercise · Stock Option (right to buy) 10b5-1 | −16,667 | $2.80 | $47K | 443,629 |
| 2026-11-02 | Atay Oguzhan Chairman and CEO | Option exercise · Stock Option (right to buy) 10b5-1 | −8,334 | $2.80 | $23K | 435,295 |
| 2026-11-02 | Tsao David Chief Technology Officer | Option exercise 10b5-1 | +10,000 | $2.80 | $28K | 11,000 |
| 2026-11-02 | Tsao David Chief Technology Officer | Option exercise 10b5-1 | +10,000 | $2.80 | $28K | 21,000 |
| 2026-11-02 | Tsao David Chief Technology Officer | Sale 10b5-1 | −917 | $107.31 | $98K | 20,083 |
| 2026-11-02 | Tsao David Chief Technology Officer | Sale 10b5-1 | −2,320 | $108.24 | $251K | 17,763 |
| 2026-11-02 | Tsao David Chief Technology Officer | Sale 10b5-1 | −3,241 | $109.04 | $353K | 14,522 |
Page 2 of 32 · 639 trades