SEC Form 4 · accession 0002088547-26-000002
BillionToOne, Inc. · BLLN
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Shan Riku Sakakibara
Officer — Chief Product Officer
Period of report
Jun 8, 2026
Accepted (ET)
Jun 10, 2026 · 8:36 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0002070849
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Class A Common Stock | Jun 8, 2026 | S | 4,000 | $96.45 | D | 216,000 | D | |
| Class A Common Stock | Jun 8, 2026 | S | 4,000 | $100.00 | D | 212,000 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026.