SCHEDULE 13G

QUANTUMSPHERE ACQUISITION CO

Ordinary Shares, par value $0.0001 per share · CUSIP: G7387B106

Event date: 2025-10-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• WOLVERINE ASSET MANAGEMENT LLC

  Shares: 574,171 · Class: 5.03%

• Wolverine Trading Partners, Inc.

  Shares: 574,171 · Class: 5.03%

• Wolverine Holdings, L.P.

  Shares: 574,171 · Class: 5.03%

• Christopher L. Gust

  Shares: 574,171 · Class: 5.03%

• Robert R. Bellick

  Shares: 574,171 · Class: 5.03%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.