Form 4 for BLLN BillionToOne, Inc.
Accepted 2026-07-08 19:06:42 ET · period of report 2026-07-06 · accession 0002088549-26-000004 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-07-08 19:06 | 2026-07-06 | BLLN | Atay Oguzhan | COB, CEO, Dir | M - OptEx | $2.80 | +26.2K | 26.2K | New | +$73.5K |
| DMT | 2026-07-08 19:06 | 2026-07-06 | BLLN | Atay Oguzhan | COB, CEO, Dir | S - Sale+OE | $122.05 | -26.2K | 0 | -100% | -$3.20M |
| DMTI | 2026-07-08 19:06 | 2026-07-06 | BLLN | Atay Oguzhan | COB, CEO, Dir | S - Sale+OE | $122.05 | -12.5K | 175.0K | -7% | -$1.53M |
| DMT | 2026-07-08 19:06 | 2026-07-06 | BLLN | Atay Oguzhan | COB, CEO, Dir | M - OptEx | $2.80 | -26.2K | 587.5K | -4% | -$73.5K |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Class A Common Stock | 2026-07-06 | M | A | 20,000 | $2.80 | 20,000 | D | — | — | (F1) The 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. |
| 2 | Common | Class A Common Stock | 2026-07-06 | M | A | 6,250 | $2.80 | 26,250 | D | — | — | (F1) The 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. |
| 3 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,320 | $118.49 | 24,930 | D | — | — | (F1) The 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. (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. |
| 4 | Common | Class A Common Stock | 2026-07-06 | S | D | 3,639 | $119.36 | 21,291 | D | — | — | (F1) The 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. (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. |
| 5 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,828 | $120.66 | 19,463 | D | — | — | (F1) The 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. (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. |
| 6 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,115 | $121.84 | 18,348 | D | — | — | (F1) The 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. (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. |
| 7 | Common | Class A Common Stock | 2026-07-06 | S | D | 6,223 | $123.07 | 12,125 | D | — | — | (F1) The 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. (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. |
| 8 | Common | Class A Common Stock | 2026-07-06 | S | D | 5,253 | $123.81 | 6,872 | D | — | — | (F1) The 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. (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. |
| 9 | Common | Class A Common Stock | 2026-07-06 | S | D | 622 | $124.61 | 6,250 | D | — | — | (F1) The 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. (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. |
| 10 | Common | Class A Common Stock | 2026-07-06 | S | D | 412 | $118.49 | 5,838 | D | — | — | (F1) The 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. (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. |
| 11 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,138 | $119.36 | 4,700 | D | — | — | (F1) The 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. (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. |
| 12 | Common | Class A Common Stock | 2026-07-06 | S | D | 570 | $120.66 | 4,130 | D | — | — | (F1) The 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. (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. |
| 13 | Common | Class A Common Stock | 2026-07-06 | S | D | 349 | $121.84 | 3,781 | D | — | — | (F1) The 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. (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. |
| 14 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,945 | $123.07 | 1,836 | D | — | — | (F1) The 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. (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. |
| 15 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,642 | $123.81 | 194 | D | — | — | (F1) The 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. (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. |
| 16 | Common | Class A Common Stock | 2026-07-06 | S | D | 194 | $124.61 | 0 | D | — | — | (F1) The 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. (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. |
| 17 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,034 | $118.81 | 186,466 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 18 | Common | Class A Common Stock | 2026-07-06 | S | D | 591 | $119.67 | 185,875 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 19 | Common | Class A Common Stock | 2026-07-06 | S | D | 444 | $120.69 | 185,431 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 20 | Common | Class A Common Stock | 2026-07-06 | S | D | 587 | $122.08 | 184,844 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 21 | Common | Class A Common Stock | 2026-07-06 | S | D | 2,323 | $123.25 | 182,521 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 22 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,221 | $124.04 | 181,300 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 23 | Common | Class A Common Stock | 2026-07-06 | S | D | 50 | $124.74 | 181,250 | I By spouse | — | — | (F1) The 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. (F10) Represents shares held by the Reporting Person's spouse. |
| 24 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,034 | $118.81 | 180,216 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 25 | Common | Class A Common Stock | 2026-07-06 | S | D | 591 | $119.67 | 179,625 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 26 | Common | Class A Common Stock | 2026-07-06 | S | D | 444 | $120.69 | 179,181 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 27 | Common | Class A Common Stock | 2026-07-06 | S | D | 586 | $122.08 | 178,595 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 28 | Common | Class A Common Stock | 2026-07-06 | S | D | 2,324 | $123.25 | 176,271 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 29 | Common | Class A Common Stock | 2026-07-06 | S | D | 1,221 | $124.04 | 175,050 | I By spouse | — | — | (F1) The 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. (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. (F10) Represents shares held by the Reporting Person's spouse. |
| 30 | Common | Class A Common Stock | 2026-07-06 | S | D | 50 | $124.74 | 175,000 | I By spouse | — | — | (F1) The 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. (F10) Represents shares held by the Reporting Person's spouse. |
| 31 | Derivative | Stock Option (right to buy) | 2026-07-06 | M | D | 20,000 | $2.80 | 593,750 | D | $2.80 · — to 2031-06-07 | 20,000 Class A Common Stock | (F16) The options are fully vested and exercisable. |
| 32 | Derivative | Stock Option (right to buy) | 2026-07-06 | M | D | 6,250 | $2.80 | 587,500 | D | $2.80 · — to 2031-06-07 | 6,250 Class A Common Stock | (F16) The options are fully vested and exercisable. |