Sakakibara Shan Riku: insider trades.
Sakakibara Shan Riku reported 11 non-derivative transactions on 3 SEC ownership filings in Q3 2026: 0 open-market purchases and 6 sales ($1.6M), across 1 company.
- Transactions
- 11
- Purchases (P)
- 0
- Sales (S)
- 6
- Companies
- 1
- Name as filed
- Sakakibara Shan Riku
Companies
| Company | Relationship | Transactions |
|---|---|---|
| BillionToOne, Inc. (BLLN) | Officer · Chief Product Officer | 11 |
Transactions
| Date | Company | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-10 | BillionToOne, Inc. | G | 3,500 | $0 | 196,500 | Form 4 |
| 2026-07-31 | BillionToOne, Inc. | S | 4,000 | $140.21 | 200,000 | Form 4 |
| 2026-07-09 | BillionToOne, Inc. | S | 1,355 | $125 | 205,354 | Form 4 |
| 2026-07-09 | BillionToOne, Inc. | S | 1,354 | $125 | 204,000 | Form 4 |
| 2026-07-09 | BillionToOne, Inc. | S | 1,117 | $125 | 206,709 | Form 4 |
| 2026-07-09 | BillionToOne, Inc. | M | 174 | $8.65 | 208,174 | Form 4 |
| 2026-07-09 | BillionToOne, Inc. | M | 1,117 | $30.78 | 209,291 | Form 4 |
| 2026-07-09 | BillionToOne, Inc. | M | 1,355 | $30.78 | 210,646 | Form 4 |
| 2026-07-09 | BillionToOne, Inc. | M | 1,354 | $30.78 | 212,000 | Form 4 |
| 2026-07-09 | BillionToOne, Inc. | S | 4,000 | $125 | 208,000 | Form 4 |
| 2026-07-09 | BillionToOne, Inc. | S | 174 | $125 | 207,826 | Form 4 |
Questions
What stock did Sakakibara Shan Riku buy or sell?
Sakakibara Shan Riku reported 11 non-derivative transactions on 3 SEC ownership filings in Q3 2026: 0 open-market purchases and 6 sales ($1.6M), across 1 company.
Is Sakakibara Shan Riku the same person as other filers with this name?
This page covers SEC CIK 2088547 only. The SEC assigns each reporting owner a CIK, and people with the same name have different CIKs.
Source: SEC Insider Transactions Data Sets, Q3 2026. Reported as filed; we do not assess intent, performance or compliance. All filings for this CIK on SEC.gov.
Plain-text version for agents and LLMs: /insiders/sakakibara-shan-riku-2088547.md
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