SCHEDULE 13G

ALT5 Sigma Corp

Common Stock, $0.001 par value · CUSIP: 47089W104

Event date: 2025-10-20

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

• CRCM LP

  Shares: 8,970,883 · Class: 8.2%

• CRCM LLC

  Shares: 8,970,883 · Class: 8.2%

• CRCM INSTITUTIONAL MASTER FUND (BVI), LTD.

  Shares: 4,800,000 · Class: 4.4%

• CRCM B SPV, LP

  Shares: 3,731,947 · Class: 3.4%

• CRCM Fintech Fund, LP

  Shares: 331,153 · Class: 0.3%

• DING CHUN R

  Shares: 8,970,883 · Class: 8.2%

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