Company · CIK 0002088256 · SIC 7371 — Services-Computer Programming Services · Nasdaq
Horizon Quantum Holdings Ltd. · HQ
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 12, 2026 DMForm 4 → | Sep 15, 9:32 pm EDT | Catherine Michele FitzsimonsCL and CO | 3,270 | $15.22 | $17,077 | 1,026 | — | |
| Sep 12, 2026 DMForm 4 → | Sep 15, 9:31 pm EDT | Greg GouldChief Financial Officer | 4,709 | $15.22 | $19,360 | 2,165 | — | |
| Sep 12, 2026 DMForm 4 → | Sep 15, 9:30 pm EDT | Joseph Francis FitzsimonsChief Executive Officer, Director, 10% Owner | 17,759 | $15.22 | $52,326 | 10,883 | — | |
| Aug 20, 2026 ADMForm 4 → | Sep 15, 9:31 pm EDT | Si-Hui TanChief Science Officer | 12,319 | $15.22 | $45,523 | 2,737 | — | late |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 17, 2026 AForm 4 → | Sep 16, 6:05 am EDT | Qian Yi Amanda ChewChief Product Officer | 17,857 | — | — | 17,857 | — | late |
| Jun 12, 2026 AMForm 4 → | Sep 15, 9:32 pm EDT | Catherine Michele FitzsimonsCL and CO | 36,520 | — | — | 32,224 | — | late |
| Jun 12, 2026 AMForm 4 → | Sep 15, 9:31 pm EDT | Greg GouldChief Financial Officer | 58,432 | — | — | 51,558 | — | late |
| Jun 12, 2026 AMForm 4 → | Sep 15, 9:30 pm EDT | Joseph Francis FitzsimonsChief Executive Officer, Director, 10% Owner | 243,469 | — | — | 214,827 | — | late |
| Mar 19, 2026 AMForm 4 → | Sep 15, 9:31 pm EDT | Si-Hui TanChief Science Officer | 152,387 | — | — | 85,931 | — | late |