Horizon Quantum Holdings Ltd.
HQ- Exchange
- Nasdaq
- Industry
- Services-Computer Programming Services
- SEC CIK
- 0002088256
No open-market purchases or sales by Horizon Quantum Holdings Ltd. insiders were filed in the last 90 days; 34 institutions reported holding it in 13F filings for Q2 2026, worth $533.3M in total; no superinvestor holds it.
Other share classesHQWWW
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Horizon Quantum Holdings Ltd. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Horizon Quantum Holdings Ltd., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Chew Qian Yi Amanda | Chief Product Officer | – | Sep 16, 2026 | 1 |
| Fitzsimons Catherine Michele | CL and CO | 1,026 | Sep 15, 2026 | 1 |
| Gould Greg | Chief Financial Officer | 2,165 | Sep 15, 2026 | 2 |
| Tan Si-Hui | Chief Science Officer | 2,737 | Sep 15, 2026 | 2 |
| Fitzsimons Joseph Francis | Chief Executive Officer | 10,883 | Sep 15, 2026 | 2 |
| Lambert Danielle | Director | 84,602Indirect | Mar 25, 2026 | 1 |
| You Harry L. | Director, 10% Owner | 1,163,484Indirect | Mar 20, 2026 | 1 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 25, 2026 (view filing) | Mar 19 | 6 daysLate | Lambert DanielleDirector | PPurchaseClass A Ordinary Shares | +84.6K | $11.82 | +$1.00M | New position84.6K after |