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 |
|---|---|---|---|---|---|---|
| 2026-09-17 | Lynch Thomas P. See Remarks | Option exercise · Stock Option (right to buy) 10b5-1 | −5,840 | $30.78 | $180K | 30,834 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Option exercise 10b5-1 | +16,666 | $2.80 | $47K | 16,666 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Option exercise 10b5-1 | +8,333 | $2.80 | $23K | 24,999 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −4,465 | $98.63 | $440K | 20,534 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,456 | $99.57 | $245K | 18,078 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,531 | $100.58 | $255K | 15,547 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −7,214 | $101.44 | $732K | 8,333 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −1,680 | $98.64 | $166K | 6,653 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −1,500 | $99.57 | $149K | 5,153 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,010 | $100.78 | $203K | 3,143 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −3,143 | $101.49 | $319K | 0 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,666 | $98.00 | $261K | 159,834 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Sale 10b5-1 | −2,666 | $98.00 | $261K | 157,168 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Option exercise · Stock Option (right to buy) 10b5-1 | −16,666 | $2.80 | $47K | 510,295 |
| 2026-09-14 | Atay Oguzhan Chairman and CEO | Option exercise · Stock Option (right to buy) 10b5-1 | −8,333 | $2.80 | $23K | 501,962 |
| 2026-09-10 | Sakakibara Shan Riku Chief Product Officer | Gift | −3,500 | 196,500 | ||
| 2026-09-09 | Tsao David Chief Technology Officer | Option exercise 10b5-1 | +10,000 | $2.80 | $28K | 11,000 |
| 2026-09-09 | Tsao David Chief Technology Officer | Option exercise 10b5-1 | +10,000 | $2.80 | $28K | 21,000 |
| 2026-09-09 | Tsao David Chief Technology Officer | Sale 10b5-1 | −10,000 | $97.54 | $975K | 11,000 |
| 2026-09-09 | Tsao David Chief Technology Officer | Sale 10b5-1 | −10,000 | $100.00 | $1.0M | 1,000 |
Page 7 of 32 · 639 trades