Tsao David
Reporting owner on Forms 3, 4 and 5, CIK 2087127.
Tsao David reported on 1 issuer in 2 filings, the latest a Form 4 filed 2026-10-07.
Issuers
| Issuer | Roles in the latest filing | Filings | Last filed |
|---|---|---|---|
| BLLN · BillionToOne, Inc.CIK 2070849 | director, officer (Chief Technology Officer) | 2 | 2026-10-07 |
Transactions and holdings
Every row of the person's Forms 3, 4 and 5, newest first, with the price and the amount owned after the row as filed.
| Security | Date | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | M exercised | +10,000 | $2.8 | 11,000 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | M exercised | +10,000 | $2.8 | 21,000 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -866 | $105.9004 | 20,134 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -1,909 | $107.195 | 18,225 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -4,284 | $108.393 | 13,941 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -2,921 | $109.0031 | 11,020 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -20 | $110.08 | 11,000 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -555 | $105.5587 | 10,445 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -400 | $106.1038 | 10,045 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -2,200 | $107.4705 | 7,845 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -4,916 | $108.5342 | 2,929 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -1,829 | $109.1445 | 1,100 | Form 4 |
| BLLN · BillionToOne, Inc.Class A Common Stock | 2026-10-05 | S sold | -100 | $110.09 | 1,000 | Form 4 |
| BLLN · BillionToOne, Inc.Stock Option (right to buy), derivative | 2026-10-05 | M exercised | -10,000 | $2.8 | 546,667 | Form 4 |
| BLLN · BillionToOne, Inc.Stock Option (right to buy), derivative | 2026-10-05 | M exercised | -10,000 | $2.8 | 536,667 | Form 4 |
| BillionToOne, Inc. Class A Common Stock | 2026-09-24 | M exercised | +3,333 | $2.8 | 4,333 | Form 4 |
| BillionToOne, Inc. Class A Common Stock | 2026-09-24 | S sold | -3,333 | $125 | 1,000 | Form 4 |
| BillionToOne, Inc. Stock Option (right to buy), derivative | 2026-09-24 | M exercised | -3,333 | $2.8 | 556,667 | Form 4 |
Filings
The person's Forms 3, 4 and 5, and any 13D or 13G naming it.
| Filing | Subject | Filed | Accepted | Ingested |
|---|---|---|---|---|
| Form 4 0002087127-26-000015 | BillionToOne, Inc. | 2026-10-07 | ||
| Form 4 0002087127-26-000013 | BillionToOne, Inc. | 2026-09-28 |