Horizon Quantum Holdings Ltd.

424B3 priced

52,966,280 shares

Horizon Quantum Holdings Ltd. is registering up to 6,044,160 Class A ordinary shares issuable upon warrant exercises and 52,966,280 Class A shares for resale by selling securityholders. The filing includes shares from warrant conversions, private placements, and existing holdings, with no proceeds going to the company except from warrant exercises. The offering relates to securities previously issued in a business combination with dMY Squared Technology Group, Inc.

EFFECT effective

Horizon Quantum Holdings Ltd. filed a Notice of Effectiveness for its Form F-1 registration statement on April 23, 2026, marking the activation of its IPO. The filing outlines the resale of up to 52,966,280 Class A ordinary shares and 6,044,160 warrants by selling securityholders, including shares from private placements and conversions. The company will not receive proceeds from these sales, only from warrant exercises if shares trade above $11.50. The filing also references a prior F-4 registration statement and includes details about market risks tied to large-scale resale.

F-1 filed

52,966,280 shares

Horizon Quantum Holdings Ltd. is registering up to 6,044,160 Class A ordinary shares and 2,884,660 warrants for resale by selling securityholders, including shares from a business combination with dMY Squared Technology Group. The filing includes details on the resale of 52,966,280 Class A shares, potential warrant exercises, and risks related to market volatility and lack of proceeds to the company. The company is an emerging growth company with no immediate proceeds from the resale, and the offering is tied to prior private placements and conversions.

20-F supplemental

Horizon Quantum Holdings Ltd. filed its 20-F annual report for the fiscal year ended December 31, 2025, following its business combination with dMY Squared Technology Group, Inc. The report details the completion of the merger, share conversions, and waivers under Singapore regulatory requirements. The company operates as a public entity post-merger, with updated capital structure and governance details.

20-F supplemental

Horizon Quantum Holdings Ltd. completed a business combination with dMY Squared Technology Group, Inc., resulting in the conversion of Horizon's shares into Company Ordinary Shares and the assumption of dMY's warrants. The company raised capital through a PIPE private placement and commenced trading on Nasdaq. The filing reflects the post-merger structure, including share conversions, warrant exchanges, and the company's transition to a publicly listed entity.

CERT inactive

The current filing is a CERT form for Horizon Quantum Holdings Ltd., indicating a registration statement for securities. The previous filing was an 8-A12B, which registered Class A ordinary shares and warrants. The current filing likely reflects updates or changes in the securities being registered, though specific details are obscured in the provided text.

8-A12B effective

Horizon Quantum Holdings Ltd. filed Form 8-A12B to register Class A ordinary shares and warrants for listing on Nasdaq. The filing incorporates by reference disclosures from a prior F-4 registration statement, including details about the company's securities structure and business combination with Horizon Quantum Computing Ltd. No exhibits are required as the registration does not involve Section 12(g) securities or additional listings.

424B3 priced

Price $11.81 · 44,119,878 shares · Gross proceeds $111,862,500

Horizon Quantum Holdings Ltd. updates its proxy statement/prospectus for a business combination involving DMY Squared Technology Group, Inc., Horizon Quantum Computing Pte. Ltd., and related entities. Key updates include an increased estimated redemption price per public share to $11.81, additional PIPE investment of $1.45 million, expanded SAFE financing to $8.384 million, new executive appointments, and a waiver of Singapore takeover rules. The filing also details revised exchange ratios, redemption conditions, and regulatory considerations.

EFFECT effective

Horizon Quantum Holdings Ltd. filed a Notice of Effectiveness for its Form F-4 registration statement, confirming the effectiveness of its securities offering. The filing outlines the company's conversion from a Singapore private company to a public company, the amalgamation of subsidiaries, and a business combination involving dMY Squared Technology Group, Inc. The offering includes up to 24,166,557 Class A shares, 19,953,321 Class B shares, and 6,044,160 warrants, with potential conversions and exercises of warrants. The registration statement also includes a resale prospectus for securities held by a selling securityholder.

424B3 priced

Horizon Quantum Holdings Ltd. is undergoing a business combination involving the conversion of its parent company, Holdco, from a Singapore private to public company, amalgamation with Horizon Quantum Computing Pte. Ltd., and a SPAC merger with DMY Squared Technology Group, Inc. The transaction involves share exchanges, conversion of preferred shares and SAFEs, and issuance of Class A and B ordinary shares, warrants, and options. The filing outlines the structure, exchange ratios, and conditions for closing, including cash requirements and regulatory approvals.

F-4/A amended

42,964,038 shares

Horizon Quantum Holdings Ltd. is undergoing a business combination involving dMY Squared Technology Group, Inc., including the conversion from a Singapore private company to a public company. The filing outlines the issuance of up to 24,166,557 Class A shares, 19,953,321 Class B shares, and 6,044,160 warrants, along with the amalgamation of subsidiaries and a SPAC merger. The registration statement includes a primary offering and resale prospectus, with details on share conversions, warrants, and the company's quantum computing initiatives.

F-4 filed

Horizon Quantum Holdings Ltd. is undergoing a business combination involving a merger with dMY Squared Technology Group, Inc., and an amalgamation with Horizon Quantum Computing Pte. Ltd. The registration statement outlines the conversion of Horizon Quantum Holdings Pte. Ltd. from a Singapore private company to a public company, issuance of Class A and Class B ordinary shares, warrants, and the structure of the merger. The filing includes details on share conversions, exchange ratios, and the terms of the business combination, including the rights of shareholders and the role of the Horizon Founder.

DRS filed

Horizon Quantum Holdings Ltd. (formerly Rose Holdco Pte. Ltd.) is undergoing a business combination involving a merger with dMY Squared Technology Group, Inc. and Horizon Quantum Computing Pte. Ltd. The transaction includes converting Rose Holdco from a private to a public company, amalgamating with Horizon, and merging with dMY via a SPAC structure. The filing outlines share conversions, warrant exchanges, and dual-class share structures, with details on the issuance of up to 27.9 million Class A shares, 20.2 million Class B shares, and 6.0 million warrants. The process involves regulatory approvals and shareholder votes.