6 insiders reported 12 Form 4 transactions for Horizon Quantum Holdings Ltd. (HQ) over the past 18 months (most recent 2026-09-15). Recent activity: Gould Greg (Chief Financial Officer) Buy 3,437 shares, Tan Si-Hui (Chief Science Officer) Buy 3,600 shares, Fitzsimons Joseph Francis (Chief Executive Officer) Buy 14,321 shares, Fitzsimons Catherine Michele (CL and CO) Buy 2,148 shares, Gould Greg (Chief Financial Officer) Sell 1,272 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-15 | Gould Greg | Chief Financial Officer | Buy | 3,437 | $0 |
| 2026-09-15 | Tan Si-Hui | Chief Science Officer | Buy | 3,600 | $0 |
| 2026-09-15 | Fitzsimons Joseph Francis | Chief Executive Officer | Buy | 14,321 | $0 |
| 2026-09-15 | Fitzsimons Catherine Michele | CL and CO | Buy | 2,148 | $0 |
| 2026-09-15 | Gould Greg | Chief Financial Officer | Sell | 1,272 | $19,360 |
| 2026-09-15 | Tan Si-Hui | Chief Science Officer | Buy | 5,728 | $0 |
| 2026-09-15 | Fitzsimons Joseph Francis | Chief Executive Officer | Sell | 3,438 | $52,326 |
| 2026-09-15 | Fitzsimons Catherine Michele | CL and CO | Sell | 1,122 | $17,077 |
| 2026-09-15 | Tan Si-Hui | Chief Science Officer | Sell | 2,991 | $45,523 |
| 2026-03-25 | Lambert Danielle | Director | Buy | 84,602 | $999,996 |
| 2026-03-24 | Fitzsimons Joseph Francis | Chief Executive Officer | Buy | 19.7M | $0 |
| 2026-03-20 | You Harry L. | Director | Buy | 1.2M | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-09-15