Who
Si-Hui Tan
Chief Science Officer
Company insider
Files Form 4 as: Chief Science Officer, Horizon Quantum Holdings.
In numbers
- Trades disclosed
- 14
- Buys
- 0
- Sells
- 0
- Bought
- $0
- Sold
- $0
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 19 Mar 2026
- Last trade
- 12 Sep 2026
- Last filed
- 15 Sep 2026
Companies traded
Activity over time
Not enough dated trades to draw.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 12 Sep 2026filed 15 Sep 2026 | HQ Horizon Quantum HoldingsQuantum Computing | SEC FORM 4 Code M | —5,728 at $0.00 | filing |
| 12 Sep 2026filed 15 Sep 2026 | HQ Horizon Quantum HoldingsQuantum Computing | SEC FORM 4 Code D | $46K2,991 at $15.22 | filing |
| 12 Sep 2026filed 15 Sep 2026 | HQ Horizon Quantum Holdingsoption or derivative · Quantum Computing | SEC FORM 4 Code M | —5,728 at $0.00 | filing |
| 12 Sep 2026filed 15 Sep 2026 | HQ Horizon Quantum Holdingsoption or derivative · Quantum Computing | SEC FORM 4 Code M | —5,728 at $0.00 | filing |
| 12 Sep 2026filed 15 Sep 2026 | HQ Horizon Quantum HoldingsQuantum Computing | SEC FORM 4 Code M | —5,728 at $0.00 | filing |
| 12 Sep 2026filed 15 Sep 2026 | HQ Horizon Quantum HoldingsQuantum Computing | SEC FORM 4 Code D | $46K2,991 at $15.22 | filing |
| 20 Aug 2026filed 15 Sep 2026 | HQ Horizon Quantum HoldingsQuantum Computing | SEC FORM 4 Code A | —3,600 at $0.00 | filing |
| 20 Aug 2026filed 15 Sep 2026 | HQ Horizon Quantum HoldingsQuantum Computing | SEC FORM 4 Code A | —3,600 at $0.00 | filing |
| 12 Jun 2026filed 15 Sep 2026 | HQ Horizon Quantum Holdingsoption or derivative · Quantum Computing | SEC FORM 4 Code A | —91,659 at $0.00 | filing |
| 12 Jun 2026filed 15 Sep 2026 | HQ Horizon Quantum Holdingsoption or derivative · Quantum Computing | SEC FORM 4 Code A | —91,659 at $0.00 | filing |
| 19 Mar 2026filed 15 Sep 2026 | HQ Horizon Quantum Holdingsoption or derivative · Quantum Computing | SEC FORM 4 Code A | —55,000 | filing |
| 19 Mar 2026filed 15 Sep 2026 | HQ Horizon Quantum Holdingsoption or derivative · Quantum Computing | SEC FORM 4 Code A | —55,000 | filing |
| 19 Mar 2026filed 25 Mar 2026 | HQ Horizon Quantum Holdingsoption or derivative · Quantum Computing | SEC FORM 4 Code A | —500,000 | filing |
| 19 Mar 2026filed 25 Mar 2026 | HQ Horizon Quantum Holdingsoption or derivative · Quantum Computing | SEC FORM 4 Code A | —500,000 | filing |
News
No headline names them, or the companies they trade most, lately.
Sectors
No trade we could place in a sector.