| CUSIP Number(s): |
L6388F110 |
| 1 |
Name of reporting person
Atlas Investissement SAS |
||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a) |
||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO |
||||||||
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e) | ||||||||
| 6 | Citizenship or place of organization
FRANCE |
||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
|
||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
78,320,018.00 |
||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions) | ||||||||
| 13 | Percent of class represented by amount in Row (11)
46.7 % |
||||||||
| 14 | Type of Reporting Person (See Instructions)
CO |
Comment for Type of Reporting Person:
(1) Reflects 77,070,018 common shares, par value $1.50 per share (“Common Shares”) of Millicom International Cellular S.A., a Luxembourg company (the “Issuer”), referred to herein on the same basis as disclosed in Amendment Nos. 26 and 27 to the Schedule 13D, beneficially owned by Atlas Investissement SAS, a company incorporated under French law as a societe par actions simplifiee (“Atlas Investissement”), plus 1,250,000 additional Common Shares that Atlas Investissement expects to purchase under the Amended Equity Derivative Transaction Agreements (as defined in Item 4 below) on June 29, 2026. Iliad Holding SAS (“Iliad Holding”), as the controlling shareholder of Atlas Investissement, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement. Maya SAS (“Maya”), as the controlling shareholder of Iliad Holding, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Iliad Holding and Atlas Investissement. Xavier Niel, the President of Maya, Jules Niel, John Niel, Elisa Niel and Joseph Niel (together, the “Niel Family”) may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement, Iliad Holding and Maya.
(2) The percentage reflected in row 13 in the table above is calculated on the basis of 167,707,493 Common Shares outstanding as of May 31, 2026 (169,000,000 Common Shares outstanding, less 1,292,507 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer’s website.
| CUSIP Number(s): |
L6388F110 |
| 1 |
Name of reporting person
Iliad Holding SAS |
||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a) |
||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO |
||||||||
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e) | ||||||||
| 6 | Citizenship or place of organization
FRANCE |
||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
|
||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
78,320,018.00 |
||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions) | ||||||||
| 13 | Percent of class represented by amount in Row (11)
46.7 % |
||||||||
| 14 | Type of Reporting Person (See Instructions)
CO |
Comment for Type of Reporting Person:
(1) Reflects 77,070,018 Common Shares, referred to herein on the same basis as disclosed in Amendment Nos. 26 and 27 to the Schedule 13D, beneficially owned by Atlas Investissement, plus 1,250,000 additional Common Shares that Atlas Investissement expects to purchase under the Amended Equity Derivative Transaction Agreements on June 29, 2026. Iliad Holding, as the controlling shareholder of Atlas Investissement, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement. Maya, as the controlling shareholder of Iliad Holding, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Iliad Holding and Atlas Investissement. The Niel Family may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement, Iliad Holding and Maya.
(2) The percentage reflected in row 13 in the table above is calculated on the basis of 167,707,493 Common Shares outstanding as of May 31, 2026 (169,000,000 Common Shares outstanding, less 1,292,507 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer’s website.
| CUSIP Number(s): |
L6388F110 |
| 1 |
Name of reporting person
Maya SAS |
||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a) |
||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO |
||||||||
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e) | ||||||||
| 6 | Citizenship or place of organization
FRANCE |
||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
|
||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
78,320,018.00 |
||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions) | ||||||||
| 13 | Percent of class represented by amount in Row (11)
46.7 % |
||||||||
| 14 | Type of Reporting Person (See Instructions)
CO |
Comment for Type of Reporting Person:
(1) Reflects 77,070,018 Common Shares, referred to herein on the same basis as disclosed in Amendment Nos. 26 and 27 to the Schedule 13D, beneficially owned by Atlas Investissement, plus 1,250,000 additional Common Shares that Atlas Investissement expects to purchase under the Amended Equity Derivative Transaction Agreements on June 29, 2026. Iliad Holding, as the controlling shareholder of Atlas Investissement, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement. Maya, as the controlling shareholder of Iliad Holding, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Iliad Holding and Atlas Investissement. The Niel Family may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement, Iliad Holding and Maya.
(2) The percentage reflected in row 13 in the table above is calculated on the basis of 167,707,493 Common Shares outstanding as of May 31, 2026 (169,000,000 Common Shares outstanding, less 1,292,507 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer’s website.
| CUSIP Number(s): |
L6388F110 |
| 1 |
Name of reporting person
Xavier Niel |
||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a) |
||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO |
||||||||
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e) | ||||||||
| 6 | Citizenship or place of organization
FRANCE |
||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
|
||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
78,320,018.00 |
||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions) | ||||||||
| 13 | Percent of class represented by amount in Row (11)
46.7 % |
||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
(1) Reflects 77,070,018 Common Shares, referred to herein on the same basis as disclosed in Amendment Nos. 26 and 27 to the Schedule 13D, beneficially owned by Atlas Investissement, plus 1,250,000 additional Common Shares that Atlas Investissement expects to purchase under the Amended Equity Derivative Transaction Agreements on June 29, 2026. Iliad Holding, as the controlling shareholder of Atlas Investissement, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement. Maya, as the controlling shareholder of Iliad Holding, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Iliad Holding and Atlas Investissement. The Niel Family may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement, Iliad Holding and Maya.
(2) The percentage reflected in row 13 in the table above is calculated on the basis of 167,707,493 Common Shares outstanding as of May 31, 2026 (169,000,000 Common Shares outstanding, less 1,292,507 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer’s website.
| CUSIP Number(s): |
L6388F110 |
| 1 |
Name of reporting person
Jules Niel |
||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a) |
||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO |
||||||||
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e) | ||||||||
| 6 | Citizenship or place of organization
FRANCE |
||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
|
||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
78,320,018.00 |
||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions) | ||||||||
| 13 | Percent of class represented by amount in Row (11)
46.7 % |
||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
(1) Reflects 77,070,018 Common Shares, referred to herein on the same basis as disclosed in Amendment Nos. 26 and 27 to the Schedule 13D, beneficially owned by Atlas Investissement, plus 1,250,000 additional Common Shares that Atlas Investissement expects to purchase under the Amended Equity Derivative Transaction Agreements on June 29, 2026. Iliad Holding, as the controlling shareholder of Atlas Investissement, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement. Maya, as the controlling shareholder of Iliad Holding, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Iliad Holding and Atlas Investissement. The Niel Family may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement, Iliad Holding and Maya.
(2) The percentage reflected in row 13 in the table above is calculated on the basis of 167,707,493 Common Shares outstanding as of May 31, 2026 (169,000,000 Common Shares outstanding, less 1,292,507 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer’s website.
| CUSIP Number(s): |
L6388F110 |
| 1 |
Name of reporting person
John Niel |
||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a) |
||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO |
||||||||
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e) | ||||||||
| 6 | Citizenship or place of organization
FRANCE |
||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
|
||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
78,320,018.00 |
||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions) | ||||||||
| 13 | Percent of class represented by amount in Row (11)
46.7 % |
||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
(1) Reflects 77,070,018 Common Shares, referred to herein on the same basis as disclosed in Amendment Nos. 26 and 27 to the Schedule 13D, beneficially owned by Atlas Investissement, plus 1,250,000 additional Common Shares that Atlas Investissement expects to purchase under the Amended Equity Derivative Transaction Agreements on June 29, 2026. Iliad Holding, as the controlling shareholder of Atlas Investissement, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement. Maya, as the controlling shareholder of Iliad Holding, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Iliad Holding and Atlas Investissement. The Niel Family may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement, Iliad Holding and Maya.
(2) The percentage reflected in row 13 in the table above is calculated on the basis of 167,707,493 Common Shares outstanding as of May 31, 2026 (169,000,000 Common Shares outstanding, less 1,292,507 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer’s website.
| CUSIP Number(s): |
L6388F110 |
| 1 |
Name of reporting person
Elisa Niel |
||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a) |
||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO |
||||||||
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e) | ||||||||
| 6 | Citizenship or place of organization
FRANCE |
||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
|
||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
78,320,018.00 |
||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions) | ||||||||
| 13 | Percent of class represented by amount in Row (11)
46.7 % |
||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
(1) Reflects 77,070,018 Common Shares, referred to herein on the same basis as disclosed in Amendment Nos. 26 and 27 to the Schedule 13D, beneficially owned by Atlas Investissement, plus 1,250,000 additional Common Shares that Atlas Investissement expects to purchase under the Amended Equity Derivative Transaction Agreements on June 29, 2026. Iliad Holding, as the controlling shareholder of Atlas Investissement, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement. Maya, as the controlling shareholder of Iliad Holding, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Iliad Holding and Atlas Investissement. The Niel Family may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement, Iliad Holding and Maya.
(2) The percentage reflected in row 13 in the table above is calculated on the basis of 167,707,493 Common Shares outstanding as of May 31, 2026 (169,000,000 Common Shares outstanding, less 1,292,507 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer’s website.
| CUSIP Number(s): |
L6388F110 |
| 1 |
Name of reporting person
Joseph Niel |
||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a) |
||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO |
||||||||
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e) | ||||||||
| 6 | Citizenship or place of organization
FRANCE |
||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
|
||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
78,320,018.00 |
||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions) | ||||||||
| 13 | Percent of class represented by amount in Row (11)
46.7 % |
||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
(1) Reflects 77,070,018 Common Shares, referred to herein on the same basis as disclosed in Amendment Nos. 26 and 27 to the Schedule 13D, beneficially owned by Atlas Investissement, plus 1,250,000 additional Common Shares that Atlas Investissement expects to purchase under the Amended Equity Derivative Transaction Agreements on June 29, 2026. Iliad Holding, as the controlling shareholder of Atlas Investissement, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement. Maya, as the controlling shareholder of Iliad Holding, may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Iliad Holding and Atlas Investissement. The Niel Family may be deemed to have shared beneficial ownership over the Common Shares beneficially owned by Atlas Investissement, Iliad Holding and Maya.
(2) The percentage reflected in row 13 in the table above is calculated on the basis of 167,707,493 Common Shares outstanding as of May 31, 2026 (169,000,000 Common Shares outstanding, less 1,292,507 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer’s website.