Horizon Quantum's SEC filings document foreign private issuer reports, material-event disclosures, governance changes, strategic agreements, operating and financial results, and capital-structure matters. Recent Form 6-K filings include exhibits for company press releases, disclosures about hardware-software collaboration, and board committee composition.
The filing record also reflects the company's public-company structure, including shareholder voting matters, security-structure disclosures, and governance reporting associated with Horizon Quantum Holdings Ltd. as a Nasdaq-listed foreign issuer focused on quantum software infrastructure.
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.
Tencent Holdings Limited, through its wholly owned subsidiary THL A12 Limited, reports beneficial ownership of 3,800,438 Class A Ordinary Shares of Horizon Quantum Holdings Ltd. This represents 11.1% of the Class A shares, giving Tencent and THL A12 sole voting and sole dispositive power over these shares.
The ownership percentage is based on 34,227,495 Class A Ordinary Shares outstanding as of June 30, 2026, as referenced from Horizon Quantum’s interim financial statements. Both reporting persons are organized offshore (Cayman Islands for Tencent and British Virgin Islands for THL A12), and this filing is identified as Amendment No. 1 to a Schedule 13G.
Horizon Quantum Holdings Ltd. reports that Chief Product Officer Chew Qian Yi Amanda holds two stock option positions over its Class A Ordinary Shares. One option award is exercisable at $0.80 per option and, in aggregate, is exercisable for 152,187 Class A Ordinary Shares and is fully vested and exercisable, with an expiration date of March 1, 2032. A second award, granted on February 1, 2025, is exercisable at $7.00 per option for an aggregate of 152,187 Class A Ordinary Shares and expires on February 1, 2035. As of August 4, 2026, 46,875 of these latter options are fully vested and exercisable, with the remaining 15,625 vesting quarterly through the existing schedule.
Horizon Quantum Holdings Ltd., a quantum-computing software company that went public via a March 2026 business combination with dMY Squared, reported a GAAP net loss of $118,786,726 for the six months ended June 30, 2026, with no revenue versus $38,462 a year earlier.
Operating expenses rose as the company scaled: research and development $4,742,435, selling and marketing $834,952, and general and administrative $7,451,257, producing an operating loss of $13,674,878. A non-cash loss of $105,317,692 from remeasuring warrant and SAFE derivative liabilities drove most of the bottom-line loss; Adjusted EBITDA was a loss of $9,561,286.
Following the SPAC merger and PIPE financing, net cash proceeds of $98,167,633 and warrant exercises lifted cash and cash equivalents to $113,254,440 and total equity to $43,675,534 as of June 30, 2026. Management states this cash will cover working-capital and capital needs for at least the next twelve months.
Horizon Quantum Holdings reported fiscal second quarter 2026 results, with a net loss of $115,227,348 for the quarter, compared with $2,902,313 a year earlier. The loss included a $108,294,223 non-cash change in fair value of derivative liabilities. Basic and diluted net loss per ordinary share was $2.20 on 52,367,347 weighted-average shares.
As of June 30, 2026, cash and cash equivalents were $113,254,440, up from $222,939 at December 31, 2025, supported by $98,167,633 of merger and PIPE proceeds, $27,186,518 from warrant exercises, and $2,500,000 from SAFE notes. Total assets were $124,045,763, derivative warrant liabilities were $76,778,574, and stockholders’ equity was $43,675,534, versus a deficit of $4,662,625 at year-end.
Management highlighted the Beryllium quantum programming language and the Triple Alpha integrated development environment, alongside operation of its own superconducting quantum testbed and a planned 256-qubit trapped-ion system. The company cited a cash infusion from public warrant exercises and stated it anticipates sufficient financial runway for the foreseeable future.
Horizon Quantum Holdings Ltd. appointed Ms. Qian Yi Amanda Chew as Chief Product Officer, with the role becoming effective on August 17, 2026, following Board approval on July 28, 2026. She will serve as Vice President of Product until the promotion takes effect.
Ms. Chew joined Horizon Quantum in November 2020 as Product Manager, was promoted to Director of Product in 2022 and to Vice President of Product in 2023. Previously, she held various roles at Microsoft Corp. from September 2014 to February 2020, most recently Senior Program Manager for Microsoft Visual Studio App Center. She holds a Bachelor of Science in mathematics and computer science from Brown University and executive certifications in design thinking, innovation, entrepreneurship, business strategy and finance from Stanford University, Wharton Executive Education and INSEAD Executive Education. This leadership change is incorporated by reference into the company’s registration statement on Form S-8 (File No. 333-296310).