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 5 others sold $33.7M 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 $40.9M (30 sales). Last close $123.08 on Sep 25, 2026.
Recent BLLN insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 28, 2026 | Oguzhan Atay (CEO) | Sold | $1M |
| Sep 28, 2026 | Oguzhan Atay (CEO) | Sold | $322K |
| Sep 28, 2026 | Oguzhan Atay (CEO) | Bought (not open market) | $23.3K |
| Sep 24, 2026 | David Tsao (CTO) | Sold | $417K |
| Sep 24, 2026 | John Roderick ten Bosch (VP) | Sold | $170K |
| Sep 24, 2026 | David Tsao (CTO) | Bought (not open market) | $9.3K |
| Sep 21, 2026 | John Roderick ten Bosch (VP) | Sold | $151K |
| Sep 17, 2026 | Thomas P. Lynch (Officer) | Sold | $2.1M |
| Sep 17, 2026 | Thomas P. Lynch (Officer) | Sold | $769K |
| Sep 17, 2026 | Thomas P. Lynch (Officer) | Sold | $644K |
| Sep 17, 2026 | Thomas P. Lynch (Officer) | Sold | $322K |
| Sep 17, 2026 | Thomas P. Lynch (Officer) | Bought (not open market) | $180K |
| Sep 17, 2026 | Thomas P. Lynch (Officer) | Bought (not open market) | $168K |
| Sep 17, 2026 | Thomas P. Lynch (Officer) | Bought (not open market) | $80.5K |
| Sep 17, 2026 | Thomas P. Lynch (Officer) | Bought (not open market) | $50K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Sold | $732K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Sold | $440K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Sold | $319K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Sold | $261K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Sold | $255K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Sold | $245K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Sold | $203K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Sold | $166K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Sold | $149K |
| Sep 14, 2026 | Oguzhan Atay (CEO) | Bought (not open market) | $46.7K |
Who's trading BLLN
- Oguzhan Atay, CEO: sold $20.2M (66 sales), last Sep 28, 2026
- John Roderick ten Bosch, Officer: bought $48K (1 buy), sold $1.2M (8 sales), last Sep 24, 2026
- David Tsao, CTO: bought $60K (1 buy), sold $7.9M (25 sales), last Sep 24, 2026
- Thomas P. Lynch, Officer: bought $6K (1 buy), sold $5.9M (17 sales), last Sep 17, 2026
- Shan Riku Sakakibara, C-suite exec: sold $2.4M (8 sales), last Sep 10, 2026
- Nancy JoAnn Johnson, Officer: bought $414K (1 buy), sold $3.3M (12 sales), last Jul 16, 2026
- Firat Ileri, Insider: other filings, last Jun 10, 2026
- Krishna Kittu Kolluri, 10% owner: 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
- Thomas S Bremner, Insider: bought $2.5M (6 buys), last Jun 10, 2026
- NeoTribe Ventures I L.P., 10% owner: other filings, last Jun 9, 2026
- John Lister, C-suite exec: other filings, last Nov 7, 2025
- Ross Taylor, CFO: other filings, last Nov 7, 2025
- Humming Bird Ventures Management NV, 10% owner: other filings, last Nov 7, 2025
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