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 |
|---|---|---|---|---|---|---|
| 2026-10-15 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −900 | $98.43 | $89K | 4,250 |
| 2026-10-15 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −1,861 | $99.84 | $186K | 2,389 |
| 2026-10-15 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −1,276 | $100.60 | $128K | 1,113 |
| 2026-10-15 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −980 | $101.79 | $100K | 133 |
| 2026-10-15 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −133 | $102.78 | $14K | 0 |
| 2026-10-15 | Atay Oguzhan Chairman and CEO | Option exercise · Stock Option (right to buy) 10b5-1 | −5,150 | $2.80 | $14K | 468,629 |
| 2026-10-14 | Atay Oguzhan Chairman and CEO | Option exercise 10b5-1 | +3,183 | $2.80 | $9K | 3,183 |
| 2026-10-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −3,083 | $98.32 | $303K | 100 |
| 2026-10-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −100 | $99.00 | $10K | 0 |
| 2026-10-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,667 | $98.00 | $261K | 149,168 |
| 2026-10-14 | Atay Oguzhan Chairman and CEO | Option exercise · Stock Option (right to buy) 10b5-1 | −3,183 | $2.80 | $9K | 473,779 |
| 2026-10-13 | Lynch Thomas P. See Remarks | Option exercise | +2,000 | $8.65 | $17K | 10,700 |
| 2026-10-13 | Lynch Thomas P. See Remarks | Option exercise · Stock Option (right to buy) | −2,000 | $8.65 | $17K | 38,974 |
| 2026-10-12 | Atay Oguzhan Chairman and CEO | Option exercise 10b5-1 | +16,667 | $2.80 | $47K | 16,667 |
| 2026-10-12 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −1,961 | $91.57 | $180K | 14,706 |
| 2026-10-12 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,553 | $93.05 | $238K | 12,153 |
| 2026-10-12 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −6,763 | $93.65 | $633K | 5,390 |
| 2026-10-12 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −3,869 | $94.61 | $366K | 1,521 |
| 2026-10-12 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −1,521 | $96.39 | $147K | 0 |
| 2026-10-12 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,667 | $97.61 | $260K | 151,835 |
Page 4 of 32 · 639 trades