SCHEDULE 13G

HCM II ACQUISITION CORP

Class A Ordinary Shares, par value $0.0001 per share (the "Shares") · CUSIP: G43658106

Event date: 2025-09-23

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

• Citadel Advisors LLC

  Shares: 1,012,171.00 · Class: 4.4%

• Citadel Advisors Holdings LP

  Shares: 1,012,171.00 · Class: 4.4%

• Citadel GP LLC

  Shares: 1,012,171.00 · Class: 4.4%

• Citadel Securities LLC

  Shares: 221,472.00 · Class: 1.0%

• Citadel Securities Group LP

  Shares: 221,472.00 · Class: 1.0%

• Citadel Securities GP LLC

  Shares: 221,472.00 · Class: 1.0%

• Kenneth Griffin

  Shares: 1,233,643.00 · Class: 5.4%

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