Sakakibara Shan Riku
Officer · BLLN
As of 2026-09-16, Sakakibara Shan Riku has 37 Form 4 transactions on record across 1 company — 37 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
- Direct $20.4M
- Indirect $0
| BLLN | direct | 196,500 sh | $20.4M |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-31 | BLLN | Sale | 4,000 @ $140.21 | $561K | −2.0% of holding | 200,000 | Form 4 |
| 2026-07-09 | BLLN | Sale | 4,000 @ $125.00 | $500K | −1.9% of holding | 208,000 | Form 4 |
| 2026-07-09 | BLLN | Sale | 1,355 @ $125.00 | $169K | −0.7% of holding | 205,354 | Form 4 |
| 2026-07-09 | BLLN | Sale | 1,354 @ $125.00 | $169K | −0.7% of holding | 204,000 | Form 4 |
| 2026-07-09 | BLLN | Sale | 1,117 @ $125.00 | $140K | −0.5% of holding | 206,709 | Form 4 |
| 2026-07-09 | BLLN | Sale | 174 @ $125.00 | $22K | −0.1% of holding | 207,826 | Form 4 |
| 2026-06-24 | BLLN | Sale | 4,000 @ $110.00 | $440K | −1.9% of holding | 208,000 | Form 4 |
| 2026-06-24 | BLLN | Sale | 4,000 @ $110.00 | $440K | −1.9% of holding | 212,000 | Form 4 |
| 2026-06-08 | BLLN | Sale | 4,000 @ $100.00 | $400K | −1.9% of holding | 212,000 | Form 4 |
| 2026-06-08 | BLLN | Sale | 4,000 @ $96.45 | $386K | −1.8% of holding | 216,000 | Form 4 |
27 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-10 | BLLN | Gift | 3,500 | 196,500 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 1,355 | 210,646 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 1,355 | 62,528 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 1,354 | 61,174 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 1,354 | 212,000 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 1,117 | 209,291 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 1,117 | 63,883 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 174 | 35,826 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 174 | 208,174 | Form 4 |
| 2026-06-24 | BLLN | Option exercise | 4,000 | 216,000 | Form 4 |
| 2026-06-24 | BLLN | Option exercise | 4,000 | 36,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 220,000 | 220,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 65,000 | 65,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 65,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 40,000 | 40,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 40,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 50,000 | 50,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 50,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 220,000 | 220,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 220,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 65,000 | 65,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 65,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 40,000 | 40,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 40,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 50,000 | 50,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 50,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 220,000 | 0 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.