Insider Profile · SEC Form 4 Activity · Trailing 90 Days
Sakakibara Shan Riku
Over the trailing 90 days, Sakakibara Shan Riku (Other Officer at BillionToOne, Inc.) traded $3.0M of stock (net selling $2.7M) in BLLN, per 19 SEC Form 4 transactions.
- Role
- Other Officer
- Companies
- BLLN
- Window
- Trailing 90 days · 19 transactions · CIK 2088547
- Net activity
- −$2.7M ($154K bought · $2.8M sold)
By Company (Trailing 90 Days)
| Symbol | Company | Txns | Bought | Sold | Net |
|---|---|---|---|---|---|
| BLLN | BillionToOne, Inc. | 19 | $154K | $2.8M | −$2.7M |
Transactions (19)
| Date | Symbol | Type | Shares | Value | Description |
|---|---|---|---|---|---|
| 2026-07-09 | BLLN | Sell | 4.0K | $500K | Open market or private sale |
| 2026-07-09 | BLLN | Buy | 1.4K | $42K | Exercise or conversion of derivative security |
| 2026-07-09 | BLLN | Buy | 1.4K | $42K | Exercise or conversion of derivative security |
| 2026-07-09 | BLLN | Buy | 1.1K | $34K | Exercise or conversion of derivative security |
| 2026-07-09 | BLLN | Buy | 174 | $2K | Exercise or conversion of derivative security |
| 2026-07-09 | BLLN | Sell | 1.4K | $169K | Open market or private sale |
| 2026-07-09 | BLLN | Sell | 174 | $2K | Exercise or conversion of derivative security |
| 2026-07-09 | BLLN | Sell | 1.1K | $140K | Open market or private sale |
| 2026-07-09 | BLLN | Sell | 1.1K | $34K | Exercise or conversion of derivative security |
| 2026-07-09 | BLLN | Sell | 1.4K | $42K | Exercise or conversion of derivative security |
| 2026-07-09 | BLLN | Sell | 1.4K | $42K | Exercise or conversion of derivative security |
| 2026-07-09 | BLLN | Sell | 174 | $22K | Open market or private sale |
| 2026-07-09 | BLLN | Sell | 1.4K | $169K | Open market or private sale |
| 2026-06-24 | BLLN | Sell | 4.0K | $440K | Open market or private sale |
| 2026-06-24 | BLLN | Buy | 4.0K | $35K | Exercise or conversion of derivative security |
| 2026-06-24 | BLLN | Sell | 4.0K | $440K | Open market or private sale |
| 2026-06-24 | BLLN | Sell | 4.0K | $35K | Exercise or conversion of derivative security |
| 2026-06-08 | BLLN | Sell | 4.0K | $386K | Open market or private sale |
| 2026-06-08 | BLLN | Sell | 4.0K | $400K | Open market or private sale |
Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.
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