Form 4: BillionToOne CEO Sells Shares
Insider Transaction (Form 4)
Oguzhan Atay, Chairman and CEO and a Director of BillionToOne, Inc., sold 12,500 shares of common stock on July 9, 2026.
Summary
- Option exercise/conversion: acquired 12,500 Class A Common Stock at $2.80 ($35,000) on July 9, 2026; holds 12,500 after (Direct).
- Open-market sale: disposed of 7,489 Class A Common Stock at $125.43 ($939,318) on July 9, 2026; holds 5,011 after (Direct).
- Open-market sale: disposed of 2,002 Class A Common Stock at $126.48 ($253,221) on July 9, 2026; holds 3,009 after (Direct).
- Open-market sale: disposed of 2,657 Class A Common Stock at $127.44 ($338,599) on July 9, 2026; holds 352 after (Direct).
- Open-market sale: disposed of 352 Class A Common Stock at $128.23 ($45,138) on July 9, 2026 (Direct).
- Option exercise/conversion: disposed of 12,500 Stock Option (right to buy) at $2.80 ($35,000) on July 9, 2026; holds 575,000 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $1,576,276 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Oguzhan Atay — Director, Officer (Chairman and CEO)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-07-09 | Option exercise/conversion | Class A Common Stock | 12,500 | $3 | $35.0K | 12,500 |
| 2026-07-09 | Open-market sale | Class A Common Stock | 7,489 | $125 | $939.3K | 5,011 |
| 2026-07-09 | Open-market sale | Class A Common Stock | 2,002 | $126 | $253.2K | 3,009 |
| 2026-07-09 | Open-market sale | Class A Common Stock | 2,657 | $127 | $338.6K | 352 |
| 2026-07-09 | Open-market sale | Class A Common Stock | 352 | $128 | $45.1K | 0 |
| 2026-07-09 | Option exercise/conversion | Stock Option (right to buy) | 12,500 | $3 | $35.0K | 575,000 |
Key Dates
| Date | Description |
|---|---|
| 2026-07-09 | Option exercise/conversion (12,500 shares) |
| 2026-07-09 | Open-market sale (7,489 shares) |
| 2026-07-09 | Open-market sale (2,002 shares) |
| 2026-07-09 | Open-market sale (2,657 shares) |
| 2026-07-09 | Open-market sale (352 shares) |
| 2026-07-09 | Option exercise/conversion (12,500 shares) |
Keywords
insider transaction, Form 4, BLLN, BillionToOne, Inc., bearish, Oguzhan Atay
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