SCHEDULE 13G

ALT5 Sigma Corp

Common Stock, par value $0.001 per share (the "Shares") · CUSIP: 47089W104

Event date: 2025-08-12

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: 73,677.00 · Class: 0.1%

• Citadel Advisors Holdings LP

  Shares: 73,677.00 · Class: 0.1%

• Citadel GP LLC

  Shares: 73,677.00 · Class: 0.1%

• Citadel Securities LLC

  Shares: 208,930.00 · Class: 0.2%

• Citadel Securities Group LP

  Shares: 208,930.00 · Class: 0.2%

• Citadel Securities GP LLC

  Shares: 208,930.00 · Class: 0.2%

• Kenneth Griffin

  Shares: 282,607.00 · Class: 0.2%

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