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 | — | |
| Aug 26, 2026 JForm 4 → | Aug 28, 4:20 pm EDT | Krishna Kittu KolluriDirector | 562,686 | — | — | 57,839 | — | |
| Aug 25, 2026 SForm 4 → | Aug 27, 8:19 pm EDT | David TsaoChief Technology Officer, Director | 10,000 | $100.00 | $1,000,000 | 1,000 | −90.9% | 10b5-1 |
| Aug 25, 2026 MForm 4 → | Aug 27, 8:19 pm EDT | David TsaoChief Technology Officer, Director | 10,000 | $2.80 | $28,000 | 11,000 | — | 10b5-1 |
| Aug 25, 2026 SForm 4 → | Aug 27, 8:19 pm EDT | John Roderick ten BoschSVP of Laboratory Operations | 1,417 | $100.00 | $141,700 | 26,467 | −5.08% | 10b5-1 |
| Aug 10, 2026 SForm 4 → | Aug 12, 6:55 pm EDT | John Roderick ten BoschSVP of Laboratory Operations | 1,417 | $92.86 | $131,583 | 27,884 | −4.84% | 10b5-1 |
| Aug 10, 2026 SForm 4 → | Aug 12, 6:51 pm EDT | David TsaoChief Technology Officer, Director | 10,000 | $92.86 | $928,600 | 1,000 | −90.9% | 10b5-1 |
| Aug 10, 2026 MForm 4 → | Aug 12, 6:51 pm EDT | David TsaoChief Technology Officer, Director | 10,000 | $2.80 | $28,000 | 11,000 | — | 10b5-1 |
| Aug 5, 2026 SForm 4 → | Aug 7, 4:02 pm EDT | Oguzhan AtayChairman and CEO, Director | 15,539 | $150.03 | $2,331,352 | 0 | −100% | 10b5-1 |
| Aug 5, 2026 MForm 4 → | Aug 7, 4:02 pm EDT | Oguzhan AtayChairman and CEO, Director | 15,539 | $2.80 | $43,509 | 15,539 | — | 10b5-1 |
| Aug 3, 2026 SForm 4 → | Aug 5, 8:52 pm EDT | Oguzhan AtayChairman and CEO, Director | 45,000 | $137.07 | $6,167,960 | 162,500 | −21.7% | 10b5-1 |
| Aug 3, 2026 MForm 4 → | Aug 5, 8:52 pm EDT | Oguzhan AtayChairman and CEO, Director | 32,500 | $2.80 | $91,000 | 32,500 | — | 10b5-1 |
| Jul 31, 2026 SForm 4 → | Aug 4, 4:32 pm EDT | Shan Riku SakakibaraChief Product Officer | 4,000 | $140.21 | $560,840 | 200,000 | −1.96% | 10b5-1 |
| Jul 16, 2026 SForm 4 → | Jul 20, 7:38 pm EDT | Nancy JoAnn JohnsonSee Remarks | 14,199 | $128.29 | $1,821,628 | 6,900 | −67.3% | 10b5-1 |
| Jul 13, 2026 SForm 4 → | Jul 15, 4:38 pm EDT | John Roderick ten BoschSVP of Laboratory Operations | 4,251 | $125.46 | $533,330 | 29,301 | −12.7% | 10b5-1 |
| Jul 13, 2026 SForm 4 → | Jul 15, 4:38 pm EDT | David TsaoChief Technology Officer, Director | 20,000 | $124.88 | $2,497,698 | 1,000 | −95.2% | 10b5-1 |
| Jul 13, 2026 MForm 4 → | Jul 15, 4:38 pm EDT | David TsaoChief Technology Officer, Director | 20,000 | $2.80 | $56,000 | 21,000 | — | 10b5-1 |
| Jul 9, 2026 SForm 4 → | Jul 13, 4:39 pm EDT | Oguzhan AtayChairman and CEO, Director | 12,500 | $126.10 | $1,576,276 | 0 | −100% | 10b5-1 |
| Jul 9, 2026 MForm 4 → | Jul 13, 4:39 pm EDT | Oguzhan AtayChairman and CEO, Director | 12,500 | $2.80 | $35,000 | 12,500 | — | 10b5-1 |
| Jul 9, 2026 SForm 4 → | Jul 13, 4:39 pm EDT | Shan Riku SakakibaraChief Product Officer | 8,000 | $125.00 | $1,000,000 | 204,000 | −3.77% | 10b5-1 |
| Jul 9, 2026 MForm 4 → | Jul 13, 4:39 pm EDT | Shan Riku SakakibaraChief Product Officer | 4,000 | $29.82 | $119,269 | 212,000 | — | 10b5-1 |
| Jul 6, 2026 SForm 4 → | Jul 8, 7:06 pm EDT | Oguzhan AtayChairman and CEO, Director | 38,750 | $122.05 | $4,729,379 | 175,000 | −18.1% | 10b5-1 |
| Jul 6, 2026 MForm 4 → | Jul 8, 7:06 pm EDT | Oguzhan AtayChairman and CEO, Director | 26,250 | $2.80 | $73,500 | 26,250 | — | 10b5-1 |
| Jul 1, 2026 SForm 4 → | Jul 6, 8:38 pm EDT | Nancy JoAnn JohnsonSee Remarks | 801 | $124.91 | $100,056 | 21,099 | −3.66% | 10b5-1 |
| Jun 29, 2026 SForm 4 → | Jul 1, 4:23 pm EDT | John Roderick ten BoschSVP of Laboratory Operations | 1,416 | $120.00 | $169,920 | 33,552 | −4.05% | 10b5-1 |
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 | — | |
| Aug 25, 2026 MForm 4 → | Aug 27, 8:19 pm EDT | David TsaoChief Technology Officer, Director | 10,000 | $2.80 | $28,000 | 580,000 | — | 10b5-1 |
| Aug 10, 2026 MForm 4 → | Aug 12, 6:51 pm EDT | David TsaoChief Technology Officer, Director | 10,000 | $2.80 | $28,000 | 590,000 | — | 10b5-1 |
| Aug 5, 2026 MForm 4 → | Aug 7, 4:02 pm EDT | Oguzhan AtayChairman and CEO, Director | 15,539 | $2.80 | $43,509 | 526,961 | — | 10b5-1 |
| Aug 3, 2026 MForm 4 → | Aug 5, 8:52 pm EDT | Oguzhan AtayChairman and CEO, Director | 32,500 | $2.80 | $91,000 | 542,500 | — | 10b5-1 |
| Jul 13, 2026 MForm 4 → | Jul 15, 4:38 pm EDT | David TsaoChief Technology Officer, Director | 20,000 | $2.80 | $56,000 | 600,000 | — | 10b5-1 |
| Jul 9, 2026 MForm 4 → | Jul 13, 4:39 pm EDT | Oguzhan AtayChairman and CEO, Director | 12,500 | $2.80 | $35,000 | 575,000 | — | 10b5-1 |
| Jul 9, 2026 MForm 4 → | Jul 13, 4:39 pm EDT | Shan Riku SakakibaraChief Product Officer | 4,000 | $29.82 | $119,269 | 61,174 | — | 10b5-1 |
| Jul 6, 2026 MForm 4 → | Jul 8, 7:06 pm EDT | Oguzhan AtayChairman and CEO, Director | 26,250 | $2.80 | $73,500 | 587,500 | — | 10b5-1 |