Tsao David's Form 4 filing
BillionToOne, Inc. (BLLN) · filed Aug 12, 2026
- Accession no.
- 0002070849-26-000058
- Filed
- Aug 12, 2026, 6:51 PM ET
- Trade date
- Aug 10, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Checked
This filing lists 2 non-derivative transactions and 1 derivative transaction. Open-market sales total $928.6K. It was filed 2 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Tsao DavidCIK 0002087127 | Director, Officer (Chief Technology Officer) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 10, 2026 | Class A Common Stock | MOption exerciseAcquired | +10,000 | $2.80 | +$28,000 | 11,000 | Direct | |
| Aug 10, 2026 | Class A Common Stock | SSaleDisposed | −10,000 | $92.86 | −$928,600 | 1,000 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 10, 2026 | Class A Common Stock | MOption exerciseDisposed | −10,000 | $2.80 | −$28,000 | 590,000 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
No transaction price on this filing refers to a footnote.