
Director, Chairman and CEO · BillionToOne, Inc. · Class A Common Stock
Option exercise — administrative, little informational value
$47K reported value · new position
Disclosed 2 business days after execution (deadline: 2)
Routine: 23 prior trades recorded in this security
No clustered activity in the dataset
No material company filing within 60 days after the trade
Executed under a Rule 10b5-1 trading plan
The Insider Score measures how far a disclosure deviates from normal filing patterns. A high score is a prompt for research, not evidence of illegal insider trading.
| Score | Actor | Security | Side | Value | Disclosed | Evidence |
|---|---|---|---|---|---|---|
| 15 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $114K 1,063 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 19 | Atay OguzhanDirector, Chairman and CEO | Open-market sale · 10b5-1 plan | SELL | $225K 2,075 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 15 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $125K 1,130 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 15 | ten Bosch John RoderickSVP of Laboratory Operations | Open-market sale · 10b5-1 plan | SELL | $160K 1,417 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 15 | Atay OguzhanDirector, Chairman and CEO | Open-market sale · 10b5-1 plan | SELL | $60K 536 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 0 | Atay OguzhanDirector, Chairman and CEO | Option exercise · 10b5-1 plan | M | $47K 16.7K sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 0 | Tsao DavidDirector, Chief Technology Officer | Option exercise · 10b5-1 plan | M | $28K 10.0K sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 15 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $219K 1,992 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 8 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $2,603 23 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 12 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $23K 208 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 18 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $251K 2,320 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 18 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $353K 3,241 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 0 | Atay OguzhanDirector, Chairman and CEO | Option exercise · 10b5-1 plan | M | $23K 8,334 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 26 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $264K 2,389 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 14 | Atay OguzhanDirector, Chairman and CEO | Open-market sale · 10b5-1 plan | SELL | $302K 2,667 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 8 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $34K 300 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 20 | Atay OguzhanDirector, Chairman and CEO | Open-market sale · 10b5-1 plan | SELL | $22K 200 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 11 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $98K 917 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 8 | Tsao DavidDirector, Chief Technology Officer | Open-market sale · 10b5-1 plan | SELL | $11K 100 sh | Nov 4, 2026 traded Nov 2, 2026 | |
| 22 | Atay OguzhanDirector, Chairman and CEO | Open-market sale · 10b5-1 plan | SELL | $267K 2,451 sh | Nov 4, 2026 traded Nov 2, 2026 |
Read directly from the primary public document; every field below is as reported by the filer.
Value = shares × reported price per share
= $46,668
Atay Oguzhan filed this Form 4 reporting a option exercise of BLLN on Oct 12, 2026. It became public on Oct 14, 2026. The filing establishes the reported transaction and the filer's stated role. It does not establish why the trade was made or what the filer knew.
No field has changed since this record was first ingested.
No material filings recorded for this issuer.