Director & Sponsor Report 11.8% Stake in Horizon Quantum Holdings Post-Merger, Subject to Lock-Up

summarizeSummary

Director Harry L. You and dMY Squared Sponsor, LLC report an 11.8% beneficial ownership in Horizon Quantum Holdings Ltd. following the recent SPAC merger, with shares subject to a two-year lock-up.

check_boxKey Events

• Significant Beneficial Ownership Reported

  Director Harry L. You and dMY Squared Sponsor, LLC collectively reported beneficial ownership of 4,097,358 Class A Ordinary Shares, representing 11.8% of the outstanding class.

• Post-Merger Ownership Structure

  This ownership stems from the conversion of prior holdings in dMY Squared Technology Group, Inc. (the SPAC) as part of the Business Combination completed on March 19, 2026.

• Shares Subject to Lock-Up

  The beneficially owned Class A Ordinary Shares are subject to a two-year transfer restriction, while warrants have a 30-day lock-up, providing near-term market stability.

• Registration Rights Agreement

  A registration rights agreement has been established, allowing for the future resale of these securities after the lock-up period.

auto_awesomeAnalysis

Harry L. You, a director of Horizon Quantum Holdings Ltd. and the sole member of dMY Squared Sponsor, LLC, has reported a combined beneficial ownership of 11.8% of the company's Class A Ordinary Shares following the completion of the Business Combination on March 19, 2026. This significant stake, which includes shares held directly and shares issuable from warrants, establishes a substantial ownership position for a key insider and affiliated entity in the newly combined company. The shares are subject to a two-year lock-up agreement, providing stability by restricting immediate sales, while a registration rights agreement allows for future resale after the lock-up period. This filing provides crucial insight into the post-merger ownership structure and the continued involvement of a former SPAC executive.