David Tsao insider trades
Open-market stock purchases and sales by David Tsao, Chief Technology Officer at BillionToOne, Inc, from SEC Form 4 filings since Nov 7, 2025.
Track record: 100% of 1 scored buy are up 5% or more since purchase, averaging +76%.
Recent trades
| Date | Stock | Trade | Value |
|---|---|---|---|
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $91.7K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $205K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $464K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $318K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $2.2K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $58.6K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $42.4K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $236K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $534K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $200K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Sold | $11K |
| Oct 5, 2026 | BLLN BillionToOne, Inc | Bought (not open market) | $28K |
| Sep 24, 2026 | BLLN BillionToOne, Inc | Sold | $417K |
| Sep 24, 2026 | BLLN BillionToOne, Inc | Bought (not open market) | $9.3K |
| Sep 9, 2026 | BLLN BillionToOne, Inc | Sold | $1M |
| Sep 9, 2026 | BLLN BillionToOne, Inc | Bought (not open market) | $28K |
| Sep 8, 2026 | BLLN BillionToOne, Inc | Sold (not open market) | — |
| Sep 3, 2026 | BLLN BillionToOne, Inc | Bought (not open market) | — |
| Aug 25, 2026 | BLLN BillionToOne, Inc | Sold | $1M |
| Aug 25, 2026 | BLLN BillionToOne, Inc | Bought (not open market) | $28K |
| Aug 10, 2026 | BLLN BillionToOne, Inc | Sold | $929K |
| Aug 10, 2026 | BLLN BillionToOne, Inc | Bought (not open market) | $28K |
| Jul 13, 2026 | BLLN BillionToOne, Inc | Sold | $281K |
| Jul 13, 2026 | BLLN BillionToOne, Inc | Bought (not open market) | $28K |
| Jul 13, 2026 | BLLN BillionToOne, Inc | Sold | $215K |
Companies traded
- BLLN BillionToOne, Inc: 1 buy, 36 sales, last Oct 5, 2026