---
schema_version: "secwatch.filing_event.v1"
accession: "0001829126-26-002579"
form_type: "8-K"
ticker: null
cik: "0001915380"
company_name: "dMY Squared Technology Group, Inc."
filed_at: "2026-03-20T23:59:59+00:00"
generated_at: "2026-05-15T09:31:16.305854+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.9
calibrated_materiality_score: 0.9
confidence: "high"
source: SEC EDGAR
---

# dMY Squared completes Horizon Quantum merger; shares trade on Nasdaq as HQ

## Summary
- SPAC shareholders redeemed 1,403,777 shares at ~$11.82, aggregate ~$16.47M.
- All prior SPAC directors/officers ceased; Holdco board and officers appointed: CEO Joseph Fitzimons, CSO Si-Hui Tan, CFO Greg Gould.
- Existing SPAC warrants assumed by Holdco, now exercisable for Holdco Class A ordinary shares.
- Holdco shares and warrants began trading on Nasdaq March 20, 2026 under symbols HQ and HQWWW.

## SEC filing metadata
- accession: 0001829126-26-002579
- form_type: 8-K
- cik: 0001915380
- company_name: dMY Squared Technology Group, Inc.
- filed_at: 2026-03-20T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.9
- calibrated_materiality_score: 0.9
- confidence: high
- sec_items: 1.01, 2.01, 5.01, 5.02, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1915380/000182912626002579/0001829126-26-002579-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1915380/000182912626002579/dmysquared_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001829126-26-002579
- JSON: https://secwatch.observer/filing/0001829126-26-002579.json
- Plain text: https://secwatch.observer/filing/0001829126-26-002579.txt

## Source-grounded claims
- claim_id: 21469d7702d6f113ccf998f79ecf0daa9808c7a0
  claim: dMY Squared Technology Group, Inc.: Company adopted second amended and restated articles of organization in connection with business combination, becoming wholly-owned subsidiary of Holdco.
  evidence_excerpt: the Company adopted a second amended and restated articles of organization (“ Second Amended and Restated Articles of Organization ”) which is substantially in the form as described in the Proxy Statement, in accordance with the Company becoming a wholly-owned subsidiary of Holdco in connection with the Business Combination.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915380/000182912626002579/0001829126-26-002579-index.htm
- claim_id: 4dd7e7e3caebbc9ab5d6e9ddbe154a5b7a52963d
  claim: dMY Squared Technology Group, Inc. underwent a change of control involving Horizon Quantum Holdings Ltd. (Holdco) (closed 2026-03-19).
  evidence_excerpt: On March 19, 2026, dMY Squared Technology Group, Inc. (the “ Company ”) consummated its previously announced business combination
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915380/000182912626002579/0001829126-26-002579-index.htm
- claim_id: 3b7483e752f8c3d9dfec13e5deb041df5d275f55
  claim: dMY Squared Technology Group, Inc. entered into Warrant Assumption Agreement with Continental Stock Transfer & Trust Company valued at Amendment of warrant agreement to exchange right to acquire Company Class A common stock for right t (effective 2026-03-20).
  evidence_excerpt: connection with the Closing, the Company, Holdco, and Continental Stock Transfer & Trust Company, as warrant agent (the “ Warrant Agent ”), entered into a warrant assignment, assumption and amendment agreement (the “ Warrant Assumption Agreement ”), pursuant to which, among other things, the Company assigned to Holdco all of the Company’s right, title and interest in and to, and Holdco will assume all of the Company’s liabilities and obligations under the certain Warrant Agreement, dated as of October 4, 2022, between the Company and the Warrant Agent (the “ Existing Warrant Agreement ”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915380/000182912626002579/0001829126-26-002579-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.