Company · CIK 0002070849 · SIC 8071 — Services-Medical Laboratories · Nasdaq
BillionToOne, Inc. · BLLN
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 21, 2026 SForm 4 → | Sep 23, 5:50 pm EDT | John Roderick ten BoschSVP of Laboratory Operations | 1,416 | $106.61 | $150,960 | 23,635 | −5.65% | 10b5-1 |
| Sep 17, 2026 SForm 4 → | Sep 21, 7:00 pm EDT | Thomas P. LynchSee Remarks | 35,112 | $110.33 | $3,873,966 | 700 | −98.0% | 10b5-1 |
| Sep 17, 2026 MForm 4 → | Sep 21, 7:00 pm EDT | Thomas P. LynchSee Remarks | 35,112 | $13.61 | $477,898 | 35,812 | — | 10b5-1 |
| Sep 14, 2026 SForm 4 → | Sep 16, 6:43 pm EDT | Oguzhan AtayChairman and CEO, Director | 30,331 | $99.91 | $3,030,444 | 157,168 | −16.2% | 10b5-1 |
| Sep 14, 2026 MForm 4 → | Sep 16, 6:43 pm EDT | Oguzhan AtayChairman and CEO, Director | 24,999 | $2.80 | $69,997 | 24,999 | — | 10b5-1 |
| Sep 10, 2026 GForm 4 → | Sep 14, 6:47 pm EDT | Shan Riku SakakibaraChief Product Officer | 3,500 | — | — | 196,500 | — | |
| Sep 9, 2026 SForm 4 → | Sep 11, 6:01 pm EDT | John Roderick ten BoschSVP of Laboratory Operations | 1,416 | $97.54 | $138,117 | 25,051 | −5.35% | 10b5-1 |
| Sep 9, 2026 SForm 4 → | Sep 11, 6:01 pm EDT | David TsaoChief Technology Officer, Director | 20,000 | $98.77 | $1,975,400 | 1,000 | −95.2% | 10b5-1 |
| Sep 9, 2026 MForm 4 → | Sep 11, 6:01 pm EDT | David TsaoChief Technology Officer, Director | 20,000 | $2.80 | $56,000 | 21,000 | — | 10b5-1 |
| Sep 8, 2026 SForm 4 → | Sep 10, 7:44 pm EDT | Thomas P. LynchSee Remarks | 20,000 | $99.99 | $1,999,880 | 700 | −96.6% | 10b5-1 |
| Sep 8, 2026 MForm 4 → | Sep 10, 7:44 pm EDT | Thomas P. LynchSee Remarks | 20,000 | $13.61 | $272,200 | 20,700 | — | 10b5-1 |
| Sep 8, 2026 CGForm 4 → | Sep 10, 7:44 pm EDT | Oguzhan AtayChairman and CEO, Director | 40,000 | — | — | 0 | — | |
| Sep 3, 2026 CGForm 4 → | Sep 8, 9:55 pm EDT | David TsaoChief Technology Officer, Director | 40,000 | — | — | 1,000 | — |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 17, 2026 MForm 4 → | Sep 21, 7:00 pm EDT | Thomas P. LynchSee Remarks | 35,112 | $13.61 | $477,898 | 30,834 | — | 10b5-1 |
| Sep 14, 2026 MForm 4 → | Sep 16, 6:43 pm EDT | Oguzhan AtayChairman and CEO, Director | 24,999 | $2.80 | $69,997 | 501,962 | — | 10b5-1 |
| Sep 9, 2026 MForm 4 → | Sep 11, 6:01 pm EDT | David TsaoChief Technology Officer, Director | 20,000 | $2.80 | $56,000 | 560,000 | — | 10b5-1 |
| Sep 8, 2026 MForm 4 → | Sep 10, 7:44 pm EDT | Thomas P. LynchSee Remarks | 20,000 | $13.61 | $272,200 | 36,674 | — | 10b5-1 |
| Sep 8, 2026 CForm 4 → | Sep 10, 7:44 pm EDT | Oguzhan AtayChairman and CEO, Director | 20,000 | — | — | 2,197,542 | — | |
| Sep 3, 2026 CForm 4 → | Sep 8, 9:55 pm EDT | David TsaoChief Technology Officer, Director | 20,000 | — | — | 2,305,108 | — |