Si-Hui Tan insider trades
Open-market stock purchases and sales by Si-Hui Tan, Chief Science Officer at Horizon Quantum Holdings Ltd, from SEC Form 4 filings since Mar 19, 2026.
Recent trades
| Date | Stock | Trade | Value |
|---|---|---|---|
| Sep 12, 2026 | HQ Horizon Quantum Holdings Ltd | Bought (not open market) | — |
| Sep 12, 2026 | HQ Horizon Quantum Holdings Ltd | Sold (not open market) | $45.5K |
| Sep 12, 2026 | HQ Horizon Quantum Holdings Ltd | Bought (not open market) | — |
| Aug 20, 2026 | HQ Horizon Quantum Holdings Ltd | Bought (not open market) | — |
| Jun 12, 2026 | HQ Horizon Quantum Holdings Ltd | Bought (not open market) | — |
| Mar 19, 2026 | HQ Horizon Quantum Holdings Ltd | Bought (not open market) | $75K |
| Mar 19, 2026 | HQ Horizon Quantum Holdings Ltd | Bought (not open market) | $158K |
Companies traded
- HQ Horizon Quantum Holdings Ltd: other filings, last Sep 12, 2026