SCHEDULE 13G

Cullinan Therapeutics Inc

Common Stock, par value $0.0001 per share (the "Shares") · CUSIP: 230031106

Event date: 2025-07-30

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: 2,511,191.00 · Class: 4.3%

• Citadel Advisors Holdings LP

  Shares: 2,511,191.00 · Class: 4.3%

• Citadel GP LLC

  Shares: 2,511,191.00 · Class: 4.3%

• Citadel Securities LLC

  Shares: 497,935.00 · Class: 0.8%

• Citadel Securities Group LP

  Shares: 497,935.00 · Class: 0.8%

• Citadel Securities GP LLC

  Shares: 497,935.00 · Class: 0.8%

• Kenneth Griffin

  Shares: 3,009,126.00 · Class: 5.1%

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