Sakakibara Shan Riku's Form 4 filing
BillionToOne, Inc. (BLLN) · filed Jul 13, 2026
- Accession no.
- 0002088547-26-000006
- Filed
- Jul 13, 2026, 4:39 PM ET
- Trade date
- Jul 9, 2026
- Filing delay
- 4 days
- Rule 10b5-1 plan
- Checked
This filing lists 9 non-derivative transactions and 4 derivative transactions. Open-market sales total $1.00M. It was filed 4 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 |
|---|---|
| Sakakibara Shan RikuCIK 0002088547 | Officer (Chief Product 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 |
|---|---|---|---|---|---|---|---|---|
| Jul 9, 2026 | Class A Common Stock | MOption exerciseAcquired | +174 | $8.65 | +$1,505.1 | 208,174 | Direct | |
| Jul 9, 2026 | Class A Common Stock | MOption exerciseAcquired | +1,117 | $30.78 | +$34,381.26 | 209,291 | Direct | |
| Jul 9, 2026 | Class A Common Stock | MOption exerciseAcquired | +1,355 | $30.78 | +$41,706.9 | 210,646 | Direct | |
| Jul 9, 2026 | Class A Common Stock | MOption exerciseAcquired | +1,354 | $30.78 | +$41,676.12 | 212,000 | Direct | |
| Jul 9, 2026 | Class A Common Stock | SSaleDisposed | −4,000 | $125.00 | −$500,000 | 208,000 | Direct | |
| Jul 9, 2026 | Class A Common Stock | SSaleDisposed | −174 | $125.00 | −$21,750 | 207,826 | Direct | |
| Jul 9, 2026 | Class A Common Stock | SSaleDisposed | −1,117 | $125.00 | −$139,625 | 206,709 | Direct | |
| Jul 9, 2026 | Class A Common Stock | SSaleDisposed | −1,355 | $125.00 | −$169,375 | 205,354 | Direct | |
| Jul 9, 2026 | Class A Common Stock | SSaleDisposed | −1,354 | $125.00 | −$169,250 | 204,000 | 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 |
|---|---|---|---|---|---|---|---|---|
| Jul 9, 2026 | Class A Common Stock | MOption exerciseDisposed | −174 | $8.65 | −$1,505.1 | 35,826 | Direct | |
| Jul 9, 2026 | Class A Common Stock | MOption exerciseDisposed | −1,117 | $30.78 | −$34,381.26 | 63,883 | Direct | |
| Jul 9, 2026 | Class A Common Stock | MOption exerciseDisposed | −1,355 | $30.78 | −$41,706.9 | 62,528 | Direct | |
| Jul 9, 2026 | Class A Common Stock | MOption exerciseDisposed | −1,354 | $30.78 | −$41,676.12 | 61,174 | 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.