SEC Form 4 · accession 0002070849-26-000044
BillionToOne, Inc. · BLLN
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Nancy JoAnn Johnson
Officer — See Remarks
Period of report
Jul 16, 2026
Accepted (ET)
Jul 20, 2026 · 7:38 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 StockF2 | Jul 16, 2026 | S | 2,133 | $126.9821 | D | 18,966 | D | |
| Class A Common StockF3 | Jul 16, 2026 | S | 5,559 | $127.886 | D | 13,407 | D | |
| Class A Common StockF4 | Jul 16, 2026 | S | 5,601 | $128.9551 | D | 7,806 | D | |
| Class A Common StockF5 | Jul 16, 2026 | S | 906 | $129.7787 | D | 6,900 | 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.
- F2The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $126.330 to $127.300 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
- F3The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $127.445 to $128.430 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
- F4The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.475 to $129.340 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
- F5The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $129.580 to $130.010 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
Remarks
Senior Vice President of Sales and Commercial Operations