Oguzhan Atay
CIK: 0002088549
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
BillionToOne, Inc.
Discretionary Trading P&L
Holdings
Transaction History (122 total)
- Oct 28, 2026BLLN
BillionToOne, Inc.
Exercise(M)Direct8.3K shares at avg. $2.80$23K - Oct 28, 2026BLLN
BillionToOne, Inc.
Sale(S)Indirect2.7K shares at avg. $118.00$315K - Oct 28, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct8.3K shares at avg. $118.00$983K - Oct 15, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct1.3K shares at avg. $100.60$128K - Oct 15, 2026BLLN
BillionToOne, Inc.
Exercise(M)Direct5.2K shares at avg. $2.80$14K - Oct 15, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct1.9K shares at avg. $99.84$186K - Oct 15, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct900 shares at avg. $98.43$89K - Oct 15, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct133 shares at avg. $102.78$14K - Oct 15, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct980 shares at avg. $101.79$100K - Oct 14, 2026BLLN
BillionToOne, Inc.
Exercise(M)Direct3.2K shares at avg. $2.80$9K - Oct 14, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct3.1K shares at avg. $98.32$303K - Oct 14, 2026BLLN
BillionToOne, Inc.
Sale(S)Indirect2.7K shares at avg. $98.00$261K - Oct 14, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct100 shares at avg. $99.00$10K - Oct 12, 2026BLLN
BillionToOne, Inc.
Sale(S)Indirect2.7K shares at avg. $97.61$260K - Oct 12, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct1.5K shares at avg. $96.39$147K - Oct 12, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct6.8K shares at avg. $93.65$633K - Oct 12, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct2K shares at avg. $91.57$180K - Oct 12, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct3.9K shares at avg. $94.61$366K - Oct 12, 2026BLLN
BillionToOne, Inc.
Exercise(M)Direct16.7K shares at avg. $2.80$47K - Oct 12, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct2.6K shares at avg. $93.05$238K - Sep 28, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct8.3K shares at avg. $120.64$1.0M - Sep 28, 2026BLLN
BillionToOne, Inc.
Exercise(M)Direct8.3K shares at avg. $2.80$23K - Sep 28, 2026BLLN
BillionToOne, Inc.
Sale(S)Indirect2.7K shares at avg. $120.64$322K - Sep 14, 2026BLLN
BillionToOne, Inc.
Sale(S)Direct2.5K shares at avg. $99.57$245K - Sep 14, 2026BLLN
BillionToOne, Inc.
Exercise(M)Direct16.7K shares at avg. $2.80$47K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 28, 2026 | BLLN BillionToOne, Inc. | Exercise(M) | 8,333 | $2.80 | $23,332 | Direct |
| Oct 28, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 2,667 | $118.00 | $314,706 | Indirect |
| Oct 28, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 8,333 | $118.00 | $983,294 | Direct |
| Oct 15, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 1,276 | $100.60 | $128,369 | Direct |
| Oct 15, 2026 | BLLN BillionToOne, Inc. | Exercise(M) | 5,150 | $2.80 | $14,420 | Direct |
| Oct 15, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 1,861 | $99.84 | $185,809 | Direct |
| Oct 15, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 900 | $98.43 | $88,590 | Direct |
| Oct 15, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 133 | $102.78 | $13,669 | Direct |
| Oct 15, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 980 | $101.79 | $99,751 | Direct |
| Oct 14, 2026 | BLLN BillionToOne, Inc. | Exercise(M) | 3,183 | $2.80 | $8,912 | Direct |
| Oct 14, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 3,083 | $98.32 | $303,120 | Direct |
| Oct 14, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 2,667 | $98.00 | $261,366 | Indirect |
| Oct 14, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 100 | $99.00 | $9,900 | Direct |
| Oct 12, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 2,667 | $97.61 | $260,326 | Indirect |
| Oct 12, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 1,521 | $96.39 | $146,613 | Direct |
| Oct 12, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 6,763 | $93.65 | $633,335 | Direct |
| Oct 12, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 1,961 | $91.57 | $179,571 | Direct |
| Oct 12, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 3,869 | $94.61 | $366,059 | Direct |
| Oct 12, 2026 | BLLN BillionToOne, Inc. | Exercise(M) | 16,667 | $2.80 | $46,668 | Direct |
| Oct 12, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 2,553 | $93.05 | $237,546 | Direct |
| Sep 28, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 8,333 | $120.64 | $1,005,293 | Direct |
| Sep 28, 2026 | BLLN BillionToOne, Inc. | Exercise(M) | 8,333 | $2.80 | $23,332 | Direct |
| Sep 28, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 2,666 | $120.64 | $321,626 | Indirect |
| Sep 14, 2026 | BLLN BillionToOne, Inc. | Sale(S) | 2,456 | $99.57 | $244,547 | Direct |
| Sep 14, 2026 | BLLN BillionToOne, Inc. | Exercise(M) | 16,666 | $2.80 | $46,665 | Direct |
1-25 of 122 transactions
About Atay Oguzhan
Atay Oguzhan (SEC CIK 0002088549) files insider reports with the SEC as Chairman and CEO of BillionToOne, Inc. (BLLN).
Signal8 holds 13 ownership filings by Atay Oguzhan (1 Form 3, 12 Form 4), filed between Nov 5, 2025 and Oct 30, 2026. Those filings report 122 transactions, from Nov 7, 2025 to Oct 28, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Atay Oguzhan's filings is in MENLO PARK, CA.
Recent filings by Atay Oguzhan
- Oct 28, 2026: Option exercise of BLLN shares (Form 4, code M).
- Oct 28, 2026: Open-market sales of BLLN shares (2 lines, Form 4, code S).
- Oct 15, 2026: Open-market sale of BLLN shares (Form 4, code S).
- Oct 15, 2026: Option exercise of BLLN shares (Form 4, code M).
- Oct 15, 2026: Open-market sales of BLLN shares (4 lines, Form 4, code S).
Other insiders filing for BillionToOne, Inc. (BLLN)
- Nomads Partnership, 10% Owner
- Lynch Thomas P.
- ten Bosch John Roderick, SVP of Laboratory Operations
- Tsao David, Chief Technology Officer
- Sakakibara Shan Riku, Chief Product Officer
- KOLLURI KRISHNA KITTU, Director