SCHEDULE 13D/A

Churchill Capital Corp XI

Common Stock, $0.0001 par value · CUSIP: 000207497

Event date: 2026-11-02

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

• Churchill Sponsor XI LLCReported CIK 0002078043

  Shares: 14,597,500.00 · Class: 6.02%

• M. Klein Associates, Inc.Reported CIK 0001751504

  Shares: 14,597,500.00 · Class: 6.02%

• Michael KleinReported CIK 0001327392

  Shares: 14,597,500.00 · Class: 6.02%

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