SCHEDULE 13D/A

MILLICOM INTERNATIONAL CELLULAR SA

Common Shares · CUSIP: L6388F110

Event date: 2025-09-18

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

• Atlas Investissement SASReported CIK 0001952901

  Shares: 70,470,018 · Class: 42.2%

• Iliad Holding SAS

  Shares: 70,470,018 · Class: 42.2%

• Maya SAS

  Shares: 70,470,018 · Class: 42.2%

• Xavier NielReported CIK 0001733064

  Shares: 70,470,018 · Class: 42.2%

• Jules Niel

  Shares: 70,470,018 · Class: 42.2%

• John Niel

  Shares: 70,470,018 · Class: 42.2%

• Elisa Niel

  Shares: 70,470,018 · Class: 42.2%

• Joseph Niel

  Shares: 70,470,018 · Class: 42.2%

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