Horizon Quantum Holdings Ltd (HQ) insider trading
Every open-market stock purchase and sale by Horizon Quantum Holdings Ltd executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Insiders bought $1M over the last 12 months (1 buy).
- Last insider buy: Danielle Lambert (Director), $1M, 7 months ago.
Last 12 months: insiders bought $1M (1 buy) and sold $0 (0 sales). Last close $15.12 on Oct 21, 2026.
Recent HQ insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 12, 2026 | Joseph Francis Fitzsimons (CEO) | Sold (not open market) | $52.3K |
| Sep 12, 2026 | Si-Hui Tan (C-suite exec) | Sold (not open market) | $45.5K |
| Sep 12, 2026 | Greg Gould (CFO) | Sold (not open market) | $19.4K |
| Sep 12, 2026 | Catherine Michele Fitzsimons (Officer) | Sold (not open market) | $17.1K |
| Sep 12, 2026 | Greg Gould (CFO) | Bought (not open market) | — |
| Sep 12, 2026 | Greg Gould (CFO) | Bought (not open market) | — |
| Sep 12, 2026 | Joseph Francis Fitzsimons (CEO) | Bought (not open market) | — |
| Sep 12, 2026 | Joseph Francis Fitzsimons (CEO) | Bought (not open market) | — |
| Sep 12, 2026 | Catherine Michele Fitzsimons (Officer) | Bought (not open market) | — |
| Sep 12, 2026 | Catherine Michele Fitzsimons (Officer) | Bought (not open market) | — |
| Sep 12, 2026 | Si-Hui Tan (C-suite exec) | Bought (not open market) | — |
| Sep 12, 2026 | Si-Hui Tan (C-suite exec) | Bought (not open market) | — |
| Aug 20, 2026 | Si-Hui Tan (C-suite exec) | Bought (not open market) | — |
| Aug 17, 2026 | Qian Yi Amanda Chew (C-suite exec) | Bought (not open market) | — |
| Jun 12, 2026 | Catherine Michele Fitzsimons (Officer) | Bought (not open market) | — |
| Jun 12, 2026 | Si-Hui Tan (C-suite exec) | Bought (not open market) | — |
| Jun 12, 2026 | Greg Gould (CFO) | Bought (not open market) | — |
| Jun 12, 2026 | Joseph Francis Fitzsimons (CEO) | Bought (not open market) | — |
| Jun 11, 2026 | Catherine Michele Fitzsimons (C-suite exec) | Bought (not open market) | $6.5M |
| Mar 19, 2026 | Harry L. You (10% owner) | Bought (not open market) | $33.2M |
| Mar 19, 2026 | Greg Gould (CFO) | Bought (not open market) | $1.5M |
| Mar 19, 2026 | Danielle Lambert (Director) | Bought | $1M |
| Mar 19, 2026 | Si-Hui Tan (C-suite exec) | Bought (not open market) | $158K |
| Mar 19, 2026 | Si-Hui Tan (C-suite exec) | Bought (not open market) | $75K |
| Mar 19, 2026 | Harry L. You (10% owner) | Bought (not open market) | — |
Who's trading HQ
- Greg Gould, CFO: other filings, last Sep 12, 2026
- Catherine Michele Fitzsimons, Officer: other filings, last Sep 12, 2026
- Joseph Francis Fitzsimons, CEO: other filings, last Sep 12, 2026
- Si-Hui Tan, C-suite exec: other filings, last Sep 12, 2026
- Qian Yi Amanda Chew, C-suite exec: other filings, last Aug 17, 2026
- Danielle Lambert, Director: bought $1M (1 buy), last Mar 19, 2026
- Harry L. You, 10% owner: other filings, last Mar 19, 2026
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