IPOGrid
0002088256
Company

Horizon Quantum Holdings Ltd.

Services-Computer Programming Services · HQ

follow-on trading filed Nasdaq F-1

Filing Timeline

SEC EDGAR
F-1 filed
Initial foreign registration statement
Initial public filing for a foreign issuer submitted to start the SEC review process.
First tracked pre-IPO filing for this issuer.
2026-04-16 · 0001213900-26-044735
20-F supplemental
20-F
Pre-IPO filing captured from the SEC submission timeline.
First tracked pre-IPO filing for this issuer.
2026-04-14 · 0001213900-26-043585
20-F supplemental
20-F
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-03-25 · 0001213900-26-034058
8-A12B effective
Exchange Act registration
Registration filed to list the securities under the Exchange Act ahead of trading.
Follows EFFECT and registers the class of securities for exchange listing.
Horizon Quantum Holdings Ltd. is registering Class A ordinary shares and warrants under Section 12(b) of the Securities Exchange Act of 1934 for listing on The Nasdaq Stock Market LLC. The filing references the proxy statement/prospectus from its prior F-4 registration statement (file no. 333-292737), incorporating by reference descriptions of securities and prospectus materials. The warrants are exercisable for Class A shares at $11.50 per share.
2026-03-19 · 0001213900-26-031619
CERT inactive
CERT
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-03-19 · 0001354457-26-000270
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-03-11 · 0001213900-26-026232
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-03-10 · 0001213900-26-025293
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-03-10 · 0001213900-26-025448
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-03-10 · 0001213900-26-025528
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 424B3 in the pre-IPO sequence.
2026-03-09 · 0001213900-26-024966
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows EFFECT in the pre-IPO sequence.
2026-03-09 · 0001213900-26-024970
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 424B3 in the pre-IPO sequence.
2026-03-09 · 0001213900-26-024971
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-03-09 · 0001213900-26-024975
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-03-09 · 0001213900-26-025016
424B3 priced
Final prospectus
Final prospectus filed near launch with final deal terms.
Follows F-4/A and confirms the priced prospectus.
2026-03-06 · 0001213900-26-024748
EFFECT effective
SEC effectiveness notice
SEC declared the registration statement effective, allowing the offering to proceed.
Follows DRS and marks the registration effective.
Horizon Quantum Holdings Ltd. filed a Form F-4 registration statement with the SEC, effective February 17, 2026, following its conversion from a Singapore private company to a public company. The filing outlines the business combination involving Horizon Quantum Computing Pte. Ltd., including share structures (Class A and B ordinary shares, warrants), amalgamation under Singapore law, and a SPAC merger with DMY Squared Technology Group, Inc. The company will operate as a public entity post-conversion, with details on voting rights, share issuance, and regulatory compliance.
2026-02-17 · 9999999995-26-000609
424B3 priced
Final prospectus
Final prospectus filed near launch with final deal terms.
Follows 425 and confirms the priced prospectus.
Class A and Class B Ordinary Shares · 6,044,160 warrants issuable upon conversion and exercise · Use of proceeds Proceeds from the business combination and SPAC merger · Flags dual_class, warrants
2026-02-17 · 0001213900-26-017455
F-4/A amended
F-4/A
Pre-IPO filing captured from the SEC submission timeline.
Updates the prior 425 filing.
2026-01-30 · 0001213900-26-009801
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows F-4 in the pre-IPO sequence.
2026-01-27 · 0001213900-26-007873
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-01-20 · 0001213900-26-005428
F-4 filed
F-4
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-01-14 · 0001213900-26-004420
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2026-01-12 · 0001213900-26-003252
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2025-12-09 · 0001213900-25-119427
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2025-12-05 · 0001213900-25-118468
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows DRS in the pre-IPO sequence.
2025-12-03 · 0001213900-25-117618
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
Follows 425 in the pre-IPO sequence.
2025-10-22 · 0001213900-25-101214
DRS filed
Draft registration statement
Draft registration filed confidentially before the public launch.
First tracked pre-IPO filing for this issuer.
Horizon Quantum Holdings Ltd. (formerly Rose Holdco Pte. Ltd.) is preparing for a business combination involving the amalgamation of Horizon Quantum Computing Pte. Ltd. and DMY Squared Technology Group, Inc. The filing outlines the conversion of Rose Holdco from a Singapore private company to a public company, renaming it Horizon Quantum Holdings Ltd. The registration includes a primary offering of Class A and Class B ordinary shares, warrants, and a resale prospectus for existing securities. The transaction involves complex share conversions, including Class B to Class A shares, SAFE conversions, and option exchanges, with terms contingent on regulatory approvals and completion of the business combination.
2025-10-21 · 0001213900-25-100898
425 supplemental
425
Pre-IPO filing captured from the SEC submission timeline.
First tracked pre-IPO filing for this issuer.
2025-10-14 · 0001213900-25-098707
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Recent News

No recent news stored for this issuer.