Atay Oguzhan Insider Trading -- Recent SEC Form 4 Transactions
Atay Oguzhan (CIK 2088549) reported 102 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-09-30). Recent activity: Buy BLLN (8,333 shares), Sell BLLN (8,333 shares), Sell BLLN (2,666 shares), Sell BLLN (3,143 shares), Buy BLLN (8,333 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-30 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Buy | 8,333 | $23,332 |
| 2026-09-30 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 8,333 | $1.0M |
| 2026-09-30 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 2,666 | $321,626 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 3,143 | $318,989 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Buy | 8,333 | $23,332 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 4,465 | $440,389 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 2,456 | $244,547 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 2,531 | $254,570 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 7,214 | $731,793 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 1,680 | $165,708 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 1,500 | $149,352 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 2,010 | $202,559 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Buy | 16,666 | $46,665 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 2,666 | $261,268 |
| 2026-09-16 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 2,666 | $261,268 |
| 2026-09-10 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Buy | 20,000 | $0 |
| 2026-09-10 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 20,000 | $0 |
| 2026-08-07 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Buy | 15,539 | $43,509 |
| 2026-08-07 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 15,539 | $2.3M |
| 2026-08-05 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Buy | 20,000 | $56,000 |
| 2026-08-05 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Buy | 6,250 | $17,500 |
| 2026-08-05 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Buy | 6,250 | $17,500 |
| 2026-08-05 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 269 | $35,779 |
| 2026-08-05 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 555 | $74,264 |
| 2026-08-05 | BillionToOne, Inc. (BLLN) | Chairman and CEO | Sell | 135 | $18,282 |
Source: SEC Form 4 filings · as of 2026-09-30