Sakakibara Shan Riku
SEC insider (Form 3/4/5 filer). CIK 0002088547. Chief Product Officer at BillionToOne, Inc. (BLLN). 18 reported Form 4/5 transactions since Sep 2024; latest on Sep 10, 2026. Located in MENLO PARK, CA.
Companies Sakakibara Shan Riku has filed insider reports for
- BillionToOne, Inc. (BLLN): Officer, Chief Product Officer
Sakakibara Shan Riku
CIK: 0002088547
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 (18 total)
- Sep 10, 2026BLLN
BillionToOne, Inc.
GiftDirect3.5K shares- - Jul 31, 2026BLLN
BillionToOne, Inc.
SaleDirect4K shares at avg. $140.21$561K - Jul 9, 2026BLLN
BillionToOne, Inc.
ExerciseDirect1.1K shares at avg. $30.78$34K - Jul 9, 2026BLLN
BillionToOne, Inc.
ExerciseDirect1.4K shares at avg. $30.78$42K - Jul 9, 2026BLLN
BillionToOne, Inc.
ExerciseDirect1.4K shares at avg. $30.78$42K - Jul 9, 2026BLLN
BillionToOne, Inc.
SaleDirect4K shares at avg. $125.00$500K - Jul 9, 2026BLLN
BillionToOne, Inc.
SaleDirect174 shares at avg. $125.00$22K - Jul 9, 2026BLLN
BillionToOne, Inc.
SaleDirect1.1K shares at avg. $125.00$140K - Jul 9, 2026BLLN
BillionToOne, Inc.
SaleDirect1.4K shares at avg. $125.00$169K - Jul 9, 2026BLLN
BillionToOne, Inc.
SaleDirect1.4K shares at avg. $125.00$169K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 10, 2026 | BLLN BillionToOne, Inc. | Gift | 3,500 | - | $0 | Direct |
| Jul 31, 2026 | BLLN BillionToOne, Inc. | Sale | 4,000 | $140.21 | $560,840 | Direct |
| Jul 9, 2026 | BLLN BillionToOne, Inc. | Exercise | 1,117 | $30.78 | $34,381 | Direct |
| Jul 9, 2026 | BLLN BillionToOne, Inc. | Exercise | 1,355 | $30.78 | $41,707 | Direct |
| Jul 9, 2026 | BLLN BillionToOne, Inc. | Exercise | 1,354 | $30.78 | $41,676 | Direct |
| Jul 9, 2026 | BLLN BillionToOne, Inc. | Sale | 4,000 | $125.00 | $500,000 | Direct |
| Jul 9, 2026 | BLLN BillionToOne, Inc. | Sale | 174 | $125.00 | $21,750 | Direct |
| Jul 9, 2026 | BLLN BillionToOne, Inc. | Sale | 1,117 | $125.00 | $139,625 | Direct |
| Jul 9, 2026 | BLLN BillionToOne, Inc. | Sale | 1,355 | $125.00 | $169,375 | Direct |
| Jul 9, 2026 | BLLN BillionToOne, Inc. | Sale | 1,354 | $125.00 | $169,250 | Direct |
1-10 of 18 transactions