Tan Si-Huiinsider trades
In SEC Form 4 filings, Tan Si-Hui is listed as Chief Science Officer of Horizon Quantum Holdings Ltd. (HQ). Tan Si-Hui reported no open-market purchases or sales in the last 90 days. The latest Form 4 transaction on record was filed on Sep 15.
Companies and roles
| Company | Role | Transactions | Last filed |
|---|---|---|---|
| HQHorizon Quantum Holdings Ltd. | Chief Science Officer | 6 | Sep 15 |
Cluster buys
No cluster buy in the last 90 days included a purchase by this insider (two or more insiders buying within 14 days).
Form 4 historysince 2026-09-15
| Company | Traded | Filed | Type | Shares | Price | Value | Owned after | 10b5-1 plan | Filing |
|---|---|---|---|---|---|---|---|---|---|
| HQHorizon Quantum Holdings Ltd. | Sep 12 | Sep 15 | M | 5,728 | $0.00 | $0 | 5,728 | No | Form 4 |
| HQHorizon Quantum Holdings Ltd. | Sep 12 | Sep 15 | D | 2,991 | $15.22 | $45,523 | 2,737 | No | Form 4 |
| HQHorizon Quantum Holdings Ltd. | Sep 12 | Sep 15 | M · derivative | 5,728 | $0.00 | $0 | 85,931 | No | Form 4 |
| HQHorizon Quantum Holdings Ltd. | Aug 20 | Sep 15 | A | 3,600 | $0.00 | $0 | 3,600 | No | Form 4 |
| HQHorizon Quantum Holdings Ltd. | Jun 12 | Sep 15 | A · derivative | 91,659 | $0.00 | $0 | 91,659 | No | Form 4 |
| HQHorizon Quantum Holdings Ltd. | Mar 19 | Sep 15 | A · derivative | 55,000 | $2.88 | $158,400 | 55,000 | No | Form 4 |
Published from this insider's public Form 4 filings on SEC EDGAR; the name is shown as filed. Named in a filing and want this page removed? See the privacy policy.