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Insider trades
Open-market buys and sells by officers, directors and 10% owners, from SEC Form 4. Usually filed within two business days.
About this data
- What it is
- When a company's officers, directors or owners of more than 10% buy or sell its stock, they must report the trade to the SEC on Form 4. This feed shows purchases and sales on the open market; stock grants, option exercises and shares withheld for tax are left out.
- Who files it
- The insider, usually through the company, within two business days of the trade.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- Sales are often routine: insiders sell to diversify, to pay taxes, or under a 10b5-1 plan set up months in advance. A purchase with their own money is less common, which is why many investors pay closer attention to it.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Open-market trades per day, last 30 days
Purchases Sales
By trade date. Insiders have two business days to file, so the most recent days fill in later.
Latest open-market insider trades
Showing: ticker BLLN
| Traded | Insider | Company | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 2,667 | $113.17 | $301.8K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 2,667 | $113.17 | $301.8K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 200 | $112.39 | $22.5K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 411 | $111.03 | $45.6K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 2,223 | $110.35 | $245.3K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 2,451 | $109.11 | $267.4K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 2,075 | $108.43 | $225.0K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 974 | $107.34 | $104.5K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 536 | $112.44 | $60.3K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 1,117 | $110.98 | $124.0K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 3,803 | $110.29 | $419.4K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 5,720 | $109.08 | $623.9K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 4,009 | $108.25 | $434.0K Sale | Form 4 ↗ |
| Nov 2, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 1,482 | $107.31 | $159.0K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 23 | $113.17 | $2,603 Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 208 | $112.01 | $23.3K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 633 | $111.14 | $70.4K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 2,389 | $110.31 | $263.5K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 3,234 | $109.15 | $353.0K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 2,450 | $108.39 | $265.5K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 1,063 | $107.33 | $114.1K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 100 | $113.17 | $11.3K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 300 | $112.19 | $33.7K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 1,130 | $110.77 | $125.2K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 1,992 | $110.13 | $219.4K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 3,241 | $109.04 | $353.4K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 2,320 | $108.24 | $251.1K Sale | Form 4 ↗ |
| Nov 2, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 917 | $107.31 | $98.4K Sale | Form 4 ↗ |
| Nov 2, 2026 | John Roderick ten Bosch SVP of Laboratory Operations | BLLN BillionToOne, Inc. | Sale | 1,417 | $113.17 | $160.4K Sale | Form 4 ↗ |
| Nov 2, 2026 | John Roderick ten Bosch SVP of Laboratory Operations | BLLN BillionToOne, Inc. | Sale | 1,417 | $113.17 | $160.4K Sale | Form 4 ↗ |
| Oct 28, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 2,667 | $118.00 | $314.7K Sale | Form 4 ↗ |
| Oct 28, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 8,333 | $118.00 | $983.3K Sale | Form 4 ↗ |
| Oct 15, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 133 | $102.78 | $13.7K Sale | Form 4 ↗ |
| Oct 15, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 980 | $101.79 | $99.8K Sale | Form 4 ↗ |
| Oct 15, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 1,276 | $100.60 | $128.4K Sale | Form 4 ↗ |
| Oct 15, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 1,861 | $99.84 | $185.8K Sale | Form 4 ↗ |
| Oct 15, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 900 | $98.43 | $88.6K Sale | Form 4 ↗ |
| Oct 14, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 2,667 | $98.00 | $261.4K Sale | Form 4 ↗ |
| Oct 14, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 100 | $99.00 | $9,900 Sale | Form 4 ↗ |
| Oct 14, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 3,083 | $98.32 | $303.1K Sale | Form 4 ↗ |
| Sep 28, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 2,666 | $120.64 | $321.6K Sale | Form 4 ↗ |
| Sep 28, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 8,333 | $120.64 | $1.0M Sale | Form 4 ↗ |
| Sep 24, 2026 | David Tsao Chief Technology Officer, Director | BLLN BillionToOne, Inc. | Sale | 3,333 | $125.00 | $416.6K Sale | Form 4 ↗ |
| Sep 24, 2026 | John Roderick ten Bosch SVP of Laboratory Operations | BLLN BillionToOne, Inc. | Sale | 1,416 | $120.00 | $169.9K Sale | Form 4 ↗ |
| Sep 21, 2026 | John Roderick ten Bosch SVP of Laboratory Operations | BLLN BillionToOne, Inc. | Sale | 1,416 | $106.61 | $151.0K Sale | Form 4 ↗ |
| Sep 17, 2026 | Thomas P. Lynch See Remarks | BLLN BillionToOne, Inc. | Sale | 5,840 | $110.29 | $644.1K Sale | Form 4 ↗ |
| Sep 17, 2026 | Thomas P. Lynch See Remarks | BLLN BillionToOne, Inc. | Sale | 2,920 | $110.31 | $322.1K Sale | Form 4 ↗ |
| Sep 17, 2026 | Thomas P. Lynch See Remarks | BLLN BillionToOne, Inc. | Sale | 6,968 | $110.30 | $768.6K Sale | Form 4 ↗ |
| Sep 17, 2026 | Thomas P. Lynch See Remarks | BLLN BillionToOne, Inc. | Sale | 19,384 | $110.36 | $2.1M Sale | Form 4 ↗ |
| Sep 14, 2026 | Oguzhan Atay Chairman and CEO, Director | BLLN BillionToOne, Inc. | Sale | 2,666 | $98.00 | $261.3K Sale | Form 4 ↗ |
The newest 50 items, most recent first. Every row links to its original filing. Updated Nov 15, 2026, 5:25 PM EST.
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