Welcome to our dedicated page for HORIZON QUANTUM HOLDINGS SEC filings (Ticker: HQ), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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. received a Schedule 13D from Peak XV–affiliated funds, which jointly report beneficial ownership of 6,468,999 Class A Ordinary Shares, or 20.3% of the class based on 31,833,549 shares outstanding as of April 24, 2026. These shares stem from a $6,000,000 investment made between March 2020 and July 2025 in Horizon Quantum Computing Pte. Ltd., which converted into Horizon Quantum shares at the March 16, 2026 business combination closing. The Peak XV vehicles describe the position as an investment holding and say they may buy more or sell shares depending on business and market conditions, though they report no trades in the past 60 days. Their shares are largely subject to a lock-up lasting up to 24 months after closing, except that about 9.0% of each non‑affiliate holder’s position, including theirs, was released early. They also benefit from a registration rights agreement under which their resale registration statement was filed on April 16, 2026 and declared effective on April 23, 2026.
Horizon Quantum Holdings Ltd. filings state that ICS Opportunities, Ltd., Millennium Management LLC, Millennium Group Management LLC and Israel A. Englander reported coordinated ownership information relating to Class A Ordinary Shares. The filing notes these reporting persons acquired beneficial ownership in excess of 5% on 06/17/2026 and by the filing date ceased to be beneficial owners of more than 5%.
The cover data shows shared voting and dispositive power values reported as 17,500 and 20,632 shares for certain reporting persons, and a Joint Filing Agreement dated June 24, 2026.
Horizon Quantum Holdings Ltd. filed an initial insider ownership report for its Chief Legal Officer, Catherine Michele Fitzsimons. This Form 3 identifies her as an officer of the company but does not list any common stock or derivative security holdings or transactions.
Horizon Quantum Holdings Ltd. reported its first quarter 2026 results, its first as a public company following the business combination with dMY Squared Technology Group, Inc. The deal transformed its balance sheet, lifting cash and cash equivalents to $96.6 million as of March 31, 2026, from $222,939 at December 31, 2025.
Total assets rose to $102.3 million, while stockholders’ equity improved from a deficit of $(4.7) million to positive equity of $83.9 million, reflecting new Ordinary Class A and Class B shares and conversion of prior preferred shares and SAFE liabilities into equity. The company remains in an investment phase, posting a net loss of $3.6 million, or $(0.09) per share, for the quarter.
Horizon Quantum highlighted progress in its quantum software platform Triple Alpha, expansion of its in-house quantum hardware testbed to add a second system, and new collaborations with hardware providers Alice & Bob and AQT. It also presented non-GAAP metrics, reporting first quarter EBITDA of $(3.3) million and Adjusted EBITDA of $(4.1) million, emphasizing continued investment in research, development, and business combination-related costs.
Horizon Quantum Holdings Ltd. reported that on April 29, 2026, Peter Oey was appointed to its Board of Directors. He will serve as chairman of the audit committee and a member of the compensation committee, strengthening the company’s financial oversight and governance structure.
Harry You will remain on the audit committee, while Danielle Lambert, who chairs the nominating & corporate governance committee, will step down from the audit and compensation committees. The company highlights Mr. Oey’s extensive experience as Chief Financial Officer of Grab Holdings Ltd. and prior senior finance roles as the basis for his selection.
Horizon Quantum Holdings Ltd. registers 6,044,160 Company Class A Shares issuable upon exercise of Company Warrants and registers for resale up to 52,966,280 Company Class A Shares and 2,884,660 Company Private Warrants to satisfy registration rights held by selling securityholders. The prospectus permits those selling securityholders to sell their Registered Securities from time to time at prevailing market or negotiated prices through various distribution methods described under the Plan of Distribution.
The Company will not receive proceeds from sales by the selling securityholders but would receive up to $69,507,840 if all 6,044,160 Company Warrants are exercised for cash at an exercise price of $11.50 per warrant. The filing discloses 51,578,134 Company Shares and 6,044,160 Company Warrants outstanding as of the Closing, lock-up arrangements, a 91.92% post-exercise ownership figure cited as of April 21, 2026, and material agreements including a $35,000,000 initial statement of work with IonQ.
Horizon Quantum Holdings Ltd. is registering up to 52,966,280 Company Class A Shares for resale, together with 6,044,160 Company Class A Shares issuable upon exercise of warrants and 2,884,660 Company Private Warrants. The registration enables certain selling securityholders to resell these Registered Securities from time to time. The prospectus states the Company will receive proceeds only if Company Warrants are exercised for cash at an exercise price of $11.50 per share; based on a Nasdaq closing price of $10.38 on April 14, 2026, the company believes warrant exercises are unlikely. The filing also summarizes the March 19, 2026 business combination that issued $508,384,000 in merger consideration and discloses a strategic systems agreement with IonQ with initial consideration of $35,000,000.
Horizon Quantum Holdings Ltd., through its subsidiary Horizon Quantum Computing, has entered a strategic collaboration with AQT (Alpine Quantum Technologies) to advance real-world quantum applications by tightly integrating software and hardware.
The partnership connects Horizon’s Triple Alpha integrated development environment with AQT’s trapped-ion quantum processors, a modality highlighted for high gate fidelity, low error rates, and long coherence times. Developers will be able to write, compile, and deploy quantum programs directly to AQT’s systems via the cloud, at multiple levels of abstraction, whether or not they have deep hardware expertise.
The companies plan to work jointly with customers, aiming for technical milestones in quantum computing and software development. Horizon frames this as a step toward its goal of building hardware-agnostic software infrastructure and broadening the range of quantum hardware supported in Triple Alpha, following its recent Nasdaq listing under ticker HQ.
Horizon Quantum Holdings Ltd. files its annual Form 20-F, detailing completion of its SPAC business combination with dMY Squared Technology Group and listing of Class A ordinary shares and warrants on Nasdaq. Horizon develops quantum software tools that depend on third‑party quantum hardware.
The filing explains that Horizon paid $508,384,000 in all‑share Merger Consideration and closed a PIPE Private Placement of $110,412,500 (9,196,020 Class A shares at $11.82), generating roughly $120 million of gross proceeds together with SPAC trust funds. As of March 19, 2026, 51,578,134 Company Ordinary Shares and 6,044,154 Company Warrants were outstanding.
Horizon reports it is early stage, with net losses of S$23.1 million in 2025 and S$7.5 million in 2024 and an accumulated deficit of S$44.5 million, and has not generated material product revenue. Research and development expenses were 48.5% and 44.0% of operating losses in 2025 and 2024. The company warns it will require significant cash, may need additional financing, and faces extensive risks around technology development, market adoption of quantum computing, competition, reliance on hardware and cloud partners, supply chains, talent retention and cybersecurity.
The report also notes a waiver from the Singapore Securities Industry Council exempting Horizon from most provisions of the Singapore Take‑Over Code, except in certain tender offers relying on the U.S. Tier 1 exemption.