HQ insider transaction filings
Horizon Quantum Holdings Ltd. — 10 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-16. Screen HQ transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 5 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 19.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Tan Si-Hui — Chief Science Officer | 1 | — | — | 6 |
| Fitzsimons Catherine Michele — CL and CO | 1 | — | — | 4 |
| Fitzsimons Joseph Francis — Chief Executive Officer, Director, 10% owner | 1 | — | — | 4 |
| Gould Greg — Chief Financial Officer | 1 | — | — | 4 |
| Chew Qian Yi Amanda — Chief Product Officer | 1 | — | — | 1 |
Recent Form 4 filings — Horizon Quantum Holdings Ltd.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-16 | 4 | Chew Qian Yi Amanda — Chief Product Officer | Grant/award (A): 17,857 (derivative) @ $0 | EDGAR |
| 2026-09-15 | 4 | Fitzsimons Joseph Francis — Chief Executive Officer, Director, 10% owner | Option exercise (M): 14,321 @ $0 · Disposition to issuer (D): 3,438 @ $15.22 · Grant/award (A): 229,148 (derivative) @ $0 · Option exercise (M): 14,321 (derivative) @ $0 | EDGAR |
| 2026-09-15 | 4 | Tan Si-Hui — Chief Science Officer | Grant/award (A): 3,600 @ $0 · Option exercise (M): 5,728 @ $0 · Disposition to issuer (D): 2,991 @ $15.22 · Grant/award (A): 55,000 (derivative) · Grant/award (A): 91,659 (derivative) @ $0 · Option exercise (M): 5,728 (derivative) @ $0 | EDGAR |
| 2026-09-15 | 4 | Gould Greg — Chief Financial Officer | Option exercise (M): 3,437 @ $0 · Disposition to issuer (D): 1,272 @ $15.22 · Grant/award (A): 54,995 (derivative) @ $0 · Option exercise (M): 3,437 (derivative) @ $0 | EDGAR |
| 2026-09-15 | 4 | Fitzsimons Catherine Michele — CL and CO | Option exercise (M): 2,148 @ $0 · Disposition to issuer (D): 1,122 @ $15.22 · Grant/award (A): 34,372 (derivative) @ $0 · Option exercise (M): 2,148 (derivative) @ $0 | EDGAR |
| 2026-03-25 | 4 | Lambert Danielle — Director | Purchase (P): 84,602 @ $11.82 | EDGAR |
| 2026-03-25 | 4 | Tan Si-Hui — Chief Science Officer | Grant/award (A): 500,000 (derivative) | EDGAR |
| 2026-03-25 | 4 | Gould Greg — Chief Financial Officer | Grant/award (A): 285,300 (derivative) | EDGAR |
| 2026-03-24 | 4 | Fitzsimons Joseph Francis — Chief Executive Officer, Director, 10% owner | Grant/award (A): 19,744,585 | EDGAR |
| 2026-03-20 | 4 | You Harry L. — Director, 10% owner | Grant/award (A): 1,163,484 · Grant/award (A): 2,884,660 (derivative) | EDGAR |
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