SEC Form 4 · accession 0002087126-26-000013
BillionToOne, Inc. · BLLN
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
John Roderick ten Bosch
Officer — SVP of Laboratory Operations
Period of report
Sep 21, 2026
Accepted (ET)
Sep 23, 2026 · 5:50 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 | Sep 21, 2026 | S | 1,416 | $106.61 | D | 23,635 | 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 June 2, 2026.