Every Form 4 that Horizon Quantum Holdings Ltd. Warrant (HQWWW) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow HQWWW and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full HQWWW filings page.
Horizon Quantum Holdings Ltd. (symbol: HQ) is the issuer of record for a Form 4 filing submitted to the SEC. Chew Qian Yi Amanda reported acquisition or exercise transactions in this Form 4 filing.
Horizon Quantum Holdings Ltd. (HQ) reported that Chief Product Officer Chew Qian Yi Amanda received a grant of 17,857 Restricted Stock Units (RSUs) on August 17, 2026. Each RSU represents a contingent right to receive one Class A ordinary share of the company for no consideration upon vesting.
The 17,857 RSUs vest in sixteen approximately equal installments on successive quarterly anniversaries of the August 17, 2026 grant date, subject to Ms. Chew’s continued employment through each vesting date. Following this grant, she holds 17,857 RSUs directly.
Horizon Quantum Holdings Ltd. (HQ) reported that officer Catherine Michele Fitzsimons had restricted stock unit (RSU) activity and a related share disposition. On June 12, 2026, she was granted 34,372 RSUs, each for one Class A ordinary share, vesting in approximately equal quarterly installments subject to continued employment. On September 12, 2026, 2,148 RSUs vested and were settled into the same number of Class A ordinary shares, and 1,122 underlying shares were returned to the company in a disposition reflecting cash settlement of a portion of the vested RSUs at a reference price of $15.22 per share. No Rule 10b5-1 trading plan is reported.
Horizon Quantum Holdings Ltd. (HQ) reported equity compensation activity for its Chief Financial Officer, Greg Gould. On June 12, 2026, Gould received a grant of 54,995 RSUs, each representing a contingent right to receive one Class A Ordinary Share for no consideration, vesting in sixteen approximately equal quarterly installments, subject to continued employment.
On September 12, 2026, 3,437 of Gould’s RSUs vested and were exercised into 3,437 Class A Ordinary Shares. Of these, 1,272 shares were disposed to Horizon Quantum Holdings Ltd. in a cash settlement of a portion of the vested RSUs at $15.22 per share, reflecting the last reported sales price on September 11, 2026. No Rule 10b5-1 trading plan is indicated for these transactions.
Horizon Quantum Holdings Ltd. (HQ) reported insider equity activity by Chief Science Officer Dr. Tan Si-Hui and her spouse. On September 12, 2026, 5,728 RSUs vested for Dr. Tan, converting into an equal number of Class A Ordinary Shares, followed by a disposition of 2,991 shares to the company for cash settlement at $15.22 per share. Earlier, on June 12, 2026, Dr. Tan received a grant of 91,659 RSUs that vest in sixteen approximately equal quarterly installments. Dr. Tan’s spouse received a grant of 3,600 RSUs on August 20, 2026, vesting over time, and holds 55,000 stock options with a $2.88 exercise price, exercisable in aggregate for 133,924 Class A Ordinary Shares, a portion of which is already vested and the remainder vesting in quarterly installments.
Horizon Quantum Holdings Ltd. (HQ) reported that Chief Executive Officer and director Joseph Francis Fitzsimons had 14,321 RSUs vest on September 12, 2026, which were converted into the same number of Class A ordinary shares. A portion of these vested units, 3,438 shares, was settled in cash through a disposition to the company at $15.22 per share, based on the last reported sales price on September 11, 2026. Separately, on June 12, 2026, he received a grant of 229,148 unvested RSUs that vest in sixteen approximately equal quarterly installments, subject to continued employment. No Rule 10b5-1 trading plan is reported for these transactions.