Form 4: Horizon Quantum Holdings Pte. Executive Receives Stock Grant
Insider Transaction (Form 4)
Si-Hui Tan, Chief Science Officer of Horizon Quantum Holdings Pte. Ltd., reported multiple transactions in common stock on March 19, 2026.
Summary
- Grant/award: acquired 3,600 Class A Ordinary Shares on August 20, 2026; holds 3,600 after (Indirect).
- Option exercise/conversion: acquired 5,728 Class A Ordinary Shares on September 12, 2026; holds 5,728 after (Direct).
- Disposition to the issuer: disposed of 2,991 Class A Ordinary Shares at $15.22 ($45,523) on September 12, 2026; holds 2,737 after (Direct).
- Grant/award: acquired 55,000 Stock Option (Right to Buy) on March 19, 2026; holds 55,000 after (Indirect).
- Grant/award: acquired 91,659 Restricted Stock Unit on June 12, 2026; holds 91,659 after (Direct).
- Option exercise/conversion: acquired 5,728 Restricted Stock Unit on September 12, 2026; holds 85,931 after (Direct).
Sentiment
Score: 5
Explanation: StockSavvy.ai views this as routine: the reported changes are grants, option exercises, tax withholding or similar administrative transactions, which carry limited directional signal.
Insider Transactions
Si-Hui Tan — Officer (Chief Science Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-20 | Grant/award | Class A Ordinary Shares | 3,600 | — | — | 3,600 |
| 2026-09-12 | Option exercise/conversion | Class A Ordinary Shares | 5,728 | — | — | 5,728 |
| 2026-09-12 | Disposition to the issuer | Class A Ordinary Shares | 2,991 | $15 | $45.5K | 2,737 |
| 2026-03-19 | Grant/award | Stock Option (Right to Buy) | 55,000 | — | — | 55,000 |
| 2026-06-12 | Grant/award | Restricted Stock Unit | 91,659 | — | — | 91,659 |
| 2026-09-12 | Option exercise/conversion | Restricted Stock Unit | 5,728 | — | — | 85,931 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-20 | Grant/award (3,600 shares) |
| 2026-09-12 | Option exercise/conversion (5,728 shares) |
| 2026-09-12 | Disposition to the issuer (2,991 shares) |
| 2026-03-19 | Grant/award (55,000 shares) |
| 2026-06-12 | Grant/award (91,659 shares) |
| 2026-09-12 | Option exercise/conversion (5,728 shares) |
Keywords
insider transaction, Form 4, HQ, Horizon Quantum Holdings Ltd., neutral, Si-Hui Tan
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