SCHEDULE 13G/A

CHURCHILL CAP CORP X

Class A Ordinary Shares, par value $0.0001 per share (the "Shares") · CUSIP: G2130T108

Event date: 2025-12-31

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

• Citadel Securities GP LLC

  Shares: 780,669.00 · Class: 1.9%

• Citadel Securities LLC

  Shares: 780,669.00 · Class: 1.9%

• Citadel Securities Group LP

  Shares: 780,669.00 · Class: 1.9%

• Citadel Advisors LLC

  Shares: 841,990.00 · Class: 2.0%

• Citadel Advisors Holdings LP

  Shares: 841,990.00 · Class: 2.0%

• Citadel GP LLC

  Shares: 841,990.00 · Class: 2.0%

• Kenneth Griffin

  Shares: 1,622,659.00 · Class: 3.9%

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