BLLN
BillionToOne, Inc.
Latest Form 4:Sale$1.0MbyTsao David (Chief Technology Officer) · filed Aug 28, 2026
BillionToOne, Inc. (BLLN) has 45 SEC Form 4 filings (331 transaction rows) in the rolling window, disclosed by 8 distinct insiders. Most recent filing: Aug 28, 2026.
The most active filer is SVP of Laboratory Operations ten Bosch John Roderick with 6 filings. Insiders have net sold $30.2M over the trailing 6 months.
- Industry:Medical - Diagnostics & Research
- CEO:Oguzhan Atay
- Employees:620
- HQ:Menlo Park, CA, US
- IPO:2025-11-06
Insider Buying
$3.2M
reported purchases (SEC code P)
Insider Selling
$30.2M
reported sales (SEC code S)
Unique Insiders
8
in the rolling window
Market Cap
$5.1B
latest known value
| Source | ||||||
|---|---|---|---|---|---|---|
| Chief Technology Officer | Sale | 10,000 | $1.0M | Aug 28 | SEC ↗ | |
| SVP of Laboratory Operations | Sale | 1,417 | $142K | Aug 28 | SEC ↗ | |
| SVP of Laboratory Operations | Sale | 1,417 | $132K | Aug 12 | SEC ↗ | |
| Chief Technology Officer | Sale | 10,000 | $929K | Aug 12 | SEC ↗ | |
| Chairman and CEO | Sale | 15,539 | $2.3M | Aug 7 | SEC ↗ | |
| Chairman and CEO | Sale | 38,577 | $5.3M | Aug 6 | SEC ↗ | |
| Chief Product Officer | Sale | 4,000 | $561K | Aug 4 | SEC ↗ | |
| See Remarks | Sale | 14,199 | $1.8M | Jul 20 | SEC ↗ | |
| Chief Technology Officer | Sale | 20,000 | $2.5M | Jul 15 | SEC ↗ | |
| SVP of Laboratory Operations | Sale | 1,417 | $178K | Jul 15 | SEC ↗ | |
| Chairman and CEO | Sale | 12,500 | $1.6M | Jul 13 | SEC ↗ | |
| Chief Product Officer | Sale | 8,000 | $1.0M | Jul 13 | SEC ↗ | |
| Chairman and CEO | Sale | 36,444 | $4.4M | Jul 8 | SEC ↗ | |
| See Remarks | Sale | 801 | $100K | Jul 7 | SEC ↗ | |
| SVP of Laboratory Operations | Sale | 1,416 | $170K | Jul 1 | SEC ↗ | |
| Chief Product Officer | Sale | 4,000 | $440K | Jun 26 | SEC ↗ | |
ten Bosch John RoderickFirst in 7 months | See Remarks | Sale | 1,416 | $144K | Jun 17 | SEC ↗ |
Tsao DavidFirst in 7 months | Chief Technology Officer | Sale | 20,000 | $2.0M | Jun 17 | SEC ↗ |
Sakakibara Shan RikuFirst filing | Chief Product Officer | Sale | 8,000 | $786K | Jun 11 | SEC ↗ |
Johnson Nancy JoAnnFirst in 7 months | See Remarks | Sale | 3,418 | $339K | Jun 11 | SEC ↗ |
Johnson Nancy JoAnnFirst in 7 months | See Remarks | Sale | 10,582 | $1.1M | Jun 11 | SEC ↗ |
Atay OguzhanFirst filing | See Remarks | Sale | 32,500 | $3.2M | Jun 11 | SEC ↗ |
Johnson Nancy JoAnnFirst filing | See Remarks | Purchase | 6,900 | $414K | Nov 12 | SEC ↗ |
ten Bosch John RoderickFirst filing | See Remarks | Purchase | 800 | $48K | Nov 12 | SEC ↗ |
Lynch Thomas P.First filing | See Remarks | Purchase | 100 | $6K | Nov 12 | SEC ↗ |
Tsao DavidFirst filing | Chief Technology Officer | Purchase | 1,000 | $60K | Nov 12 | SEC ↗ |
Rai AkshayFirst filing | Director | Purchase | 2,500 | $150K | Nov 12 | SEC ↗ |
Bremner Thomas SFirst filing | Director | Purchase | 41,666 | $2.5M | Nov 10 | SEC ↗ |
Related companies
BillionToOne, Inc. is in the Healthcare sector.