Tan Si-Hui
SEC CIK 2120880 · EDGAR
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| HQ | Horizon Quantum Holdings Ltd. | CSO | 5,728 | — | — | 3 | 2026-08-20 | 2026-09-12 |
Most active insiders at HQ, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Lambert Danielle | Dir | $1000.0K | — |
| 2 | Fitzsimons Catherine Michele | CL, CO | — | — |
| 3 | Fitzsimons Joseph Francis | CEO, Dir, 10% | — | — |
| 4 | Tan Si-Hui | CSO | — | — |
| 5 | Gould Greg | CFO | — | — |
| 6 | You Harry L. | Dir, 10% | — | — |
Transactions 3
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DI | 2026-09-15 21:31 | 2026-08-20 | HQ | Horizon Quantum Holdings Ltd. | Tan Si-Hui | CSO | A - Grant | $0.00 | +3,600 | 3,600 | New | $0 |
| D | 2026-09-15 21:31 | 2026-09-12 | HQ | Horizon Quantum Holdings Ltd. | Tan Si-Hui | CSO | M - OptEx | $0.00 | +5,728 | 5,728 | New | $0 |
| D | 2026-09-15 21:31 | 2026-09-12 | HQ | Horizon Quantum Holdings Ltd. | Tan Si-Hui | CSO | D - Sale to Iss | $15.22 | -2,991 | 2,737 | -52% | -$45.5K |
Purchase Sale Sale after option exercise All abbreviations