SEC Form 4 · accession 0001213900-26-100297
Horizon Quantum Holdings Ltd. · HQ
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Qian Yi Amanda Chew
Officer — Chief Product Officer
Period of report
Aug 17, 2026
Accepted (ET)
Sep 16, 2026 · 6:05 am EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0002088256
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitF1,F2 | $0.00 | Aug 17, 2026 | A | 17,857 | A | — | — | Class A Ordinary Shares | 17,857 | 17,857 | D |
Explanation of responses
- F1Each restricted stock unit ("RSU") represents a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.
- F2On August 17, 2026 (the "Grant Date"), Ms. Chew was granted a total of unvested 17,857 RSUs. The RSUs granted to Ms. Chew vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Ms. Chew's continued employment with the Company through each applicable vesting date.