Horizon Quantum Holdings Ltd.: CL/CO Catherine Fitzsimons received 601,932 shares

What happened The filing shows Catherine Michele Fitzsimons, listed as CL and CO, was granted 601,932 unvested stock options (derivative) on Jun 11, 2026. The options have an exercise price of $10.78 per share and an aggregate exercise value reported as $6,488,827. The filing states 37,620 of the options are fully vested and exercisable as of the filing date.

Key details

• Transaction date and price: Jun 11, 2026 — grant of 601,932 unvested stock options at $10.78 per option (aggregate $6,488,827). Transaction code: A (award/grant).
• Shares owned/exercisable after the transaction: 37,620 options fully vested and exercisable as of the filing; 601,932 options in total will be exercisable if fully vested.
• Vesting and expiration (from footnotes): the unvested options vest in sixteen approximately equal quarterly installments over a four-year period beginning Aug 11, 2026, subject to continued employment; the options expire ten years from the grant date (Jun 11, 2036).
• Filing timeliness: the Form 4 was filed on Oct 21, 2026, reporting the Jun 11, 2026 grant; the filing was late.

Why it may matter

• This filing records a grant of unvested stock options, not an exercise that produced shares sold into the market.
• The filing does not show why the insider received the grant or why the company made the award.