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Millicom (TIGO) investor details 42.2% stake and Chile call option

Filing Impact
(High)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13D/A

Rhea-AI Filing Summary

Atlas Investissement SAS and related parties report beneficial ownership of 70,470,018 common shares, or 42.2%, of Millicom International Cellular S.A. This percentage is based on 167,092,668 shares outstanding as of October 31, 2025. The amendment also discloses a Call Option Agreement among NJJ Cactus SAS, Millicom Spain, S.L. and Celtel Chile, S.L. tied to the acquisition of Telefonica Moviles Chile S.A. Millicom Spain receives a call option exercisable during two 30-day periods after the fifth and sixth anniversaries of the Target’s purchase, with the price payable in cash and newly issued Millicom shares determined by a volume-weighted average price.

Positive

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Negative

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Insights

Large holder reaffirms 42.2% Millicom stake and adds a call option structure with potential share issuance.

Atlas Investissement SAS, together with Iliad Holding, Maya and the Niel family, reports beneficial ownership of 70,470,018 Millicom common shares, representing 42.2% of the class based on 167,092,668 shares outstanding as of October 31, 2025. Control is structured through French holding entities, so influence is concentrated in this group.

The filing also describes a Call Option Agreement among NJJ Cactus SAS, Millicom Spain, S.L. and Celtel Chile, S.L. related to the acquisition of Telefonica Moviles Chile S.A. Millicom Spain holds a call option over NJJ Cactus’s equity interests in the Chilean structure during two 30‑day windows following the fifth and sixth anniversaries of the Target’s purchase.

The option exercise price can be paid in cash and newly issued Millicom shares, with the share component determined by a volume‑weighted average price over a specified period. That creates a defined mechanism for a future internal rebalancing of ownership in the Chilean asset and a potential, but currently unquantified, issuance of new Millicom shares.






If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Reflects 70,470,018 common shares, par value $1.50 per share ("Common Shares") of Millicom International Cellular S.A., a Luxembourg company (the "Issuer"), beneficially owned by Atlas Investissement SAS, a company incorporated under French law as a societe par actions simplifiee ("Atlas Investissement"). 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 167,092,668 Common Shares outstanding as of October 31, 2025 (169,000,000 Common Shares outstanding, less 1,907,332 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer's website.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Reflects 70,470,018 Common Shares beneficially owned by Atlas Investissement. 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 167,092,668 Common Shares outstanding as of October 31, 2025 (169,000,000 Common Shares outstanding, less 1,907,332 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer's website.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Reflects 70,470,018 Common Shares beneficially owned by Atlas Investissement. 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 167,092,668 Common Shares outstanding as of October 31, 2025 (169,000,000 Common Shares outstanding, less 1,907,332 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer's website.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Reflects 70,470,018 Common Shares beneficially owned by Atlas Investissement. 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 167,092,668 Common Shares outstanding as of October 31, 2025 (169,000,000 Common Shares outstanding, less 1,907,332 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer's website.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Reflects 70,470,018 Common Shares beneficially owned by Atlas Investissement. 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 167,092,668 Common Shares outstanding as of October 31, 2025 (169,000,000 Common Shares outstanding, less 1,907,332 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer's website.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Reflects 70,470,018 Common Shares beneficially owned by Atlas Investissement. 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 167,092,668 Common Shares outstanding as of October 31, 2025 (169,000,000 Common Shares outstanding, less 1,907,332 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer's website.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Reflects 70,470,018 Common Shares beneficially owned by Atlas Investissement. 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 167,092,668 Common Shares outstanding as of October 31, 2025 (169,000,000 Common Shares outstanding, less 1,907,332 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer's website.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Reflects 70,470,018 Common Shares beneficially owned by Atlas Investissement. 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 167,092,668 Common Shares outstanding as of October 31, 2025 (169,000,000 Common Shares outstanding, less 1,907,332 Common Shares held in treasury), as set forth in the last relevant update available on the date hereof on the Issuer's website.


SCHEDULE 13D


Atlas Investissement SAS
Signature:/s/ Anthony Maarek
Name/Title:Anthony Maarek, Managing Director
Date:02/12/2026
Iliad Holding SAS
Signature:/s/ Xavier Niel
Name/Title:Xavier Niel, President of Maya SAS, itself President of Iliad Holding SAS
Date:02/12/2026
Maya SAS
Signature:/s/ Xavier Niel
Name/Title:Xavier Niel, President
Date:02/12/2026
Xavier Niel
Signature:/s/ Xavier Niel
Name/Title:Xavier Niel
Date:02/12/2026
Jules Niel
Signature:/s/ Jules Niel
Name/Title:Jules Niel
Date:02/12/2026
John Niel
Signature:/s/ John Niel
Name/Title:John Niel
Date:02/12/2026
Elisa Niel
Signature:/s/ Xavier Niel
Name/Title:Xavier Niel, Attorney-in-Fact, for and on behalf of as Parent/Guardian of Elisa Niel
Date:02/12/2026
Joseph Niel
Signature:/s/ Xavier Niel
Name/Title:Xavier Niel, Attorney-in-Fact, for and on behalf of as Parent/Guardian of Joseph Niel
Date:02/12/2026

FAQ

How much of Millicom (TIGO) does Atlas Investissement currently own?

Atlas Investissement and related parties beneficially own 70,470,018 Millicom common shares, representing 42.2% of the class. This percentage is calculated using 167,092,668 shares outstanding as of October 31, 2025, after excluding 1,907,332 treasury shares disclosed by the company.

Who are the reporting persons in this Millicom (TIGO) Schedule 13D/A amendment?

The reporting group includes Atlas Investissement SAS, Iliad Holding SAS, Maya SAS, and members of the Niel family. Through their French holding entities, they report shared beneficial ownership over 70,470,018 Millicom common shares, equal to 42.2% of the outstanding class.

How was the 42.2% ownership stake in Millicom (TIGO) calculated?

The 42.2% figure comes from dividing 70,470,018 beneficially owned shares by 167,092,668 Millicom common shares outstanding. Outstanding shares are based on 169,000,000 issued shares minus 1,907,332 held in treasury, as of October 31, 2025, per the issuer’s disclosure.

What is the Call Option Agreement described in this Millicom (TIGO) filing?

The filing describes a Call Option Agreement among NJJ Cactus SAS, Millicom Spain, S.L. and Celtel Chile, S.L. It governs transfers of equity in the company owning Telefonica Moviles Chile S.A., setting terms for future buyouts of those interests between the parties.

What is the MIC Call Option granted to Millicom Spain in the amendment?

Millicom Spain (the MIC Investor) receives a call option allowing it, in two 30‑day periods after the fifth and sixth anniversaries of the Target’s purchase, to require NJJ Cactus to sell all its equity in the Chilean structure or the Target, under agreed pricing terms.

Can the Millicom (TIGO) Call Option Agreement lead to new share issuance?

Yes. The purchase price for NJJ Cactus’s equity interests under the MIC Call Option is payable in cash and newly issued Millicom shares. The number of shares is determined using a volume‑weighted average price over a specified period defined in the agreement.
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