Atay Oguzhan's Form 4 filing
BillionToOne, Inc. (BLLN) · filed Jul 8, 2026
- Accession no.
- 0002088549-26-000004
- Filed
- Jul 8, 2026, 7:06 PM ET
- Trade date
- Jul 6, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Checked
This filing lists 30 non-derivative transactions and 2 derivative transactions. Open-market sales total $4.73M. 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 |
|---|---|
| Atay OguzhanCIK 0002088549 | Director, Officer (Chairman and CEO) |
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 6, 2026 | Class A Common Stock | MOption exerciseAcquired | +20,000 | $2.80 | +$56,000 | 20,000 | Direct | |
| Jul 6, 2026 | Class A Common Stock | MOption exerciseAcquired | +6,250 | $2.80 | +$17,500 | 26,250 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,320 | $118.49F2 | −$156,402.31 | 24,930 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −3,639 | $119.37F3 | −$434,369.24 | 21,291 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,828 | $120.66F4 | −$220,566.66 | 19,463 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,115 | $121.84F5 | −$135,847.59 | 18,348 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −6,223 | $123.07F6 | −$765,873.32 | 12,125 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −5,253 | $123.81F7 | −$650,370.78 | 6,872 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −622 | $124.61F8 | −$77,510.16 | 6,250 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −412 | $118.49F2 | −$48,816.64 | 5,838 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,138 | $119.36F3 | −$135,837.14 | 4,700 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −570 | $120.66F4 | −$68,775.97 | 4,130 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −349 | $121.84F5 | −$42,520.66 | 3,781 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,945 | $123.07F6 | −$239,372.9 | 1,836 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,642 | $123.81F7 | −$203,294.87 | 194 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −194 | $124.61F8 | −$24,175.25 | 0 | Direct | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,034 | $118.81F9 | −$122,846.85 | 186,466 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −591 | $119.67F11 | −$70,727.57 | 185,875 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −444 | $120.69F12 | −$53,585.47 | 185,431 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −587 | $122.08F13 | −$71,663.25 | 184,844 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −2,323 | $123.25F14 | −$286,303.48 | 182,521 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,221 | $124.04F15 | −$151,458.7 | 181,300 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −50 | $124.74 | −$6,237 | 181,250 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,034 | $118.81F9 | −$122,846.54 | 180,216 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −591 | $119.67F11 | −$70,727.57 | 179,625 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −444 | $120.69F12 | −$53,585.47 | 179,181 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −586 | $122.08F13 | −$71,541.52 | 178,595 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −2,324 | $123.25F14 | −$286,426.49 | 176,271 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −1,221 | $124.04F15 | −$151,458.7 | 175,050 | Indirect | |
| Jul 6, 2026 | Class A Common Stock | SSaleDisposed | −50 | $124.74 | −$6,237 | 175,000 | Indirect |
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 6, 2026 | Class A Common Stock | MOption exerciseDisposed | −20,000 | $2.80 | −$56,000 | 593,750 | Direct | |
| Jul 6, 2026 | Class A Common Stock | MOption exerciseDisposed | −6,250 | $2.80 | −$17,500 | 587,500 | 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.
- F2
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $118.050 to $119.020 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.
Referenced by the price of 2 transactions in Table I.
- F3
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $119.055 to $119.970 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.
Referenced by the price of 2 transactions in Table I.
- F4
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $120.225 to $121.160 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.
Referenced by the price of 2 transactions in Table I.
- F5
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.390 to $122.230 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.
Referenced by the price of 2 transactions in Table I.
- F6
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $122.465 to $123.450 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.
Referenced by the price of 2 transactions in Table I.
- F7
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $123.475 to $124.455 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.
Referenced by the price of 2 transactions in Table I.
- F8
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $124.535 to $124.735 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.
Referenced by the price of 2 transactions in Table I.
- F9
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $118.250 to $119.240 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.
Referenced by the price of 2 transactions in Table I.
- F11
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $119.305 to $120.2725 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.
Referenced by the price of 2 transactions in Table I.
- F12
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $120.380 to $121.020 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.
Referenced by the price of 2 transactions in Table I.
- F13
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.555 to $122.490 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.
Referenced by the price of 2 transactions in Table I.
- F14
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $122.725 to $123.720 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.
Referenced by the price of 2 transactions in Table I.
- F15
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $123.740 to $124.735 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.
Referenced by the price of 2 transactions in Table I.