BillionToOne, Inc (BLLN) insider trading
Every open-market stock purchase and sale by BillionToOne, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Oguzhan Atay (CEO) and 4 others sold $27.4M in the last 90 days.
- Last insider buy: Thomas S Bremner (Insider), $1.1M, 11 months ago.
Last 12 months: insiders bought $3.2M (6 buys) and sold $46.1M (34 sales). Last close $105.68 on Oct 22, 2026.
Recent BLLN insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Oct 15, 2026 | Oguzhan Atay (CEO) | Sold | $186K |
| Oct 15, 2026 | Oguzhan Atay (CEO) | Sold | $128K |
| Oct 15, 2026 | Oguzhan Atay (CEO) | Sold | $99.8K |
| Oct 15, 2026 | Oguzhan Atay (CEO) | Sold | $88.6K |
| Oct 15, 2026 | Oguzhan Atay (CEO) | Bought (not open market) | $14.4K |
| Oct 15, 2026 | Oguzhan Atay (CEO) | Bought (not open market) | $14.4K |
| Oct 15, 2026 | Oguzhan Atay (CEO) | Sold | $13.7K |
| Oct 14, 2026 | Oguzhan Atay (CEO) | Sold | $303K |
| Oct 14, 2026 | Oguzhan Atay (CEO) | Sold | $261K |
| Oct 14, 2026 | Oguzhan Atay (CEO) | Sold | $9.9K |
| Oct 14, 2026 | Oguzhan Atay (CEO) | Bought (not open market) | $8.9K |
| Oct 14, 2026 | Oguzhan Atay (CEO) | Bought (not open market) | $8.9K |
| Oct 13, 2026 | Thomas P. Lynch (Officer) | Bought (not open market) | $17.3K |
| Oct 13, 2026 | Thomas P. Lynch (Officer) | Bought (not open market) | $17.3K |
| Oct 12, 2026 | Oguzhan Atay (CEO) | Sold | $633K |
| Oct 12, 2026 | Oguzhan Atay (CEO) | Sold | $366K |
| Oct 12, 2026 | Oguzhan Atay (CEO) | Sold | $260K |
| Oct 12, 2026 | Oguzhan Atay (CEO) | Sold | $238K |
| Oct 12, 2026 | Oguzhan Atay (CEO) | Sold | $180K |
| Oct 12, 2026 | Oguzhan Atay (CEO) | Sold | $147K |
| Oct 12, 2026 | Oguzhan Atay (CEO) | Bought (not open market) | $46.7K |
| Oct 12, 2026 | Oguzhan Atay (CEO) | Bought (not open market) | $46.7K |
| Oct 8, 2026 | Thomas P. Lynch (Officer) | Bought (not open market) | $69.2K |
| Oct 8, 2026 | Thomas P. Lynch (Officer) | Bought (not open market) | $69.2K |
| Oct 5, 2026 | David Tsao (CTO) | Sold | $534K |
Who's trading BLLN
- Oguzhan Atay, CEO: sold $23.1M (80 sales), last Oct 15, 2026
- Thomas P. Lynch, Officer: bought $6K (1 buy), sold $5.9M (17 sales), last Oct 13, 2026
- John Roderick ten Bosch, VP: bought $48K (1 buy), sold $1.4M (9 sales), last Oct 5, 2026
- David Tsao, CTO: bought $60K (1 buy), sold $10.1M (36 sales), last Oct 5, 2026
- Shan Riku Sakakibara, C-suite exec: sold $2.4M (8 sales), last Sep 10, 2026
- Krishna Kittu Kolluri, Director: other filings, last Aug 26, 2026
- Nancy JoAnn Johnson, Officer: bought $414K (1 buy), sold $3.3M (12 sales), last Jul 16, 2026
- Thomas S Bremner, Insider: bought $2.5M (6 buys), last Jun 10, 2026
- Firat Ileri, Insider: other filings, last Jun 10, 2026
- Anthony Pagano, Director: other filings, last Jun 10, 2026
- Akshay Rai, Insider: bought $150K (1 buy), last Jun 10, 2026
- NeoTribe Ventures I L.P., 10% owner: other filings, last Jun 9, 2026
- Ross Taylor, CFO: other filings, last Nov 7, 2025
- Humming Bird Ventures Management NV, 10% owner: other filings, last Nov 7, 2025
- John Lister, C-suite exec: other filings, last Nov 7, 2025
Get free alerts when an insider at BillionToOne, Inc files a new trade →