Millicom International Cellular S.A. filings document a foreign private issuer operating Latin American fixed and mobile telecommunications businesses under the TIGO and Tigo Business brands. Its Form 6-K reports furnish earnings releases, interim consolidated financial statements, material-event updates and press releases covering operating performance, network investments, market consolidation and compliance matters.
The filing record also covers capital-structure actions such as senior-note offerings and subsidiary note redemptions, Luxembourg annual general meeting materials, shareholder voting procedures, dividend and director proposals, governance matters and material agreements. The company indicates annual reporting under Form 20-F.
Millicom International Cellular S.A. (TIGO) reported that Atlas Investissement SAS is scheduled to physically settle the balance of a transaction and acquire 6,000,000 common shares on September 25, 2026, for approximately USD 568,201,140.51, excluding commissions and interest. Atlas reports beneficial ownership of 82,982,244 shares, or 49.5%; that amount includes 76,982,244 shares it already beneficially owns plus the scheduled purchase. The percentage is based on 167,718,390 shares outstanding as of August 31, 2026.
Atlas's controlling shareholders Iliad Holding SAS and Maya SAS, and Xavier Niel, Jules Niel, John Niel, Elisa Niel and Joseph Niel, may also be deemed to share beneficial ownership. Atlas amended financing arrangements with six unaffiliated financial institutions, increasing the maximum amount available to it by approximately USD 483,886,779 compared with the June financing position; the increased amount was made available September 24, 2026. The purchase is anticipated to be funded by cash on hand, including cash settlement proceeds and increased financing proceeds. Atlas intends, subject to conditions including any required regulatory approvals and the financing documentation, to purchase additional shares up to 50.5% ownership; timing and amount depend on prevailing market conditions. The financing transactions do not themselves require either party to purchase shares.
Millicom International Cellular S.A. reported strong top-line expansion for the six months ended June 30, 2026. Revenue reached $4,164 million, up 52.3% year-on-year, with service revenue of $3,900 million, driven by consolidation of Coltel in Colombia, the 2025 acquisitions in Ecuador and Uruguay, and currency appreciation. Adjusted EBITDA rose to $1,866 million (up 46.8%), and operating profit was $877 million. Net cash from operating activities increased to $1,301 million, while equity free cash flow excluding divestitures grew to $552 million.
Despite this, net profit attributable to owners declined to $218 million (EPS $1.30) from $869 million, reflecting the absence of last year’s $604 million Lati gain, higher depreciation and amortization, increased net financial expenses of $516 million, and a $32 million goodwill impairment in Costa Rica. Total assets rose to $20,679 million, with net debt of $8,075 million and leverage at 2.73x. Based on the stronger cash generation, Millicom raised its 2026 equity free cash flow guidance to around $1.1 billion and lowered its year-end leverage target to below 2.5x. Shareholders approved a $3.00-per-share dividend, and the board later authorized an additional interim dividend of $1.50 per share for early 2027. Management also notes employment-related proceedings in Guatemala and a new, more volatile FX regime in Bolivia as key uncertainties, while the independent auditor’s review concluded the interim financial statements comply with IAS 34.
MILLICOM INTERNATIONAL CELLULAR SA director Blanca Trevino de Vega reported a small equity grant and related tax withholding in common shares. She received 1,420 common shares as a grant or award at a stated price of $0.00 per share, increasing her direct holdings to 14,447 shares.
On the same date, 284 common shares were withheld by the issuer solely to satisfy tax obligations incurred upon the transfer, with a reference price of $73.92 per share used for valuation. This withholding was not an open‑market sale and represents a routine, non‑market adjustment tied to the equity award.
MILLICOM INTERNATIONAL CELLULAR SA director Justine Dimovic had 1,420 common shares granted as equity compensation and 284 shares withheld for taxes. The 284-share entry is coded as a sale but the issuer explains it only withheld shares to satisfy tax obligations on the transfer, using a reference price of $73.92 per share. After these transactions, Dimovic directly holds 8,562 common shares.
Millicom International Cellular SA director Bruce Churchill reported equity compensation activity involving the company’s common shares. On 20 May 2026, he received a grant of 1,420 common shares, recorded at no cash price. In connection with this award, the issuer withheld 284 common shares to satisfy tax obligations incurred upon transfer, based on a reference value of $73.92 per share. After these transactions, Churchill directly holds 26,729 common shares of Millicom.
MILLICOM INTERNATIONAL CELLULAR SA director Maria Teresa Arnal reported a compensation-related share grant combined with tax withholding. She received 1,420 Common Shares as a grant or award, while 284 Common Shares were withheld by the issuer solely to cover tax obligations on the transfer.
Following these transactions, she directly holds 14,163 Common Shares. Because the 284-share disposition was tax withholding rather than an open-market sale, the activity mainly reflects routine equity compensation rather than a discretionary trade in the company’s stock.
Atlas Investissement SAS and related parties report updated ownership of Millicom International Cellular S.A., showing beneficial holdings of 82,982,244 common shares, or 49.5% of the outstanding class, as of a base of 167,707,493 shares.
Atlas increased its secured equity financing capacity by about USD 360.8 million through amended and additional transactions with several banks, secured by Millicom shares. On June 29, 2026, it physically settled prior equity derivative deals, acquiring 6,512,226 shares for an aggregate purchase price of approximately USD 522.4 million, funded with proceeds from these financings. Atlas also entered into a new June equity derivative transaction under which it expects to purchase up to 6,000,000 additional shares on or before September 29, 2026, via physically settled deliveries from a bank counterparty.
Atlas Investissement SAS and related parties filed Amendment No. 28 to their Schedule 13D on Millicom International Cellular S.A. (TIGO), updating their ownership and derivatives structure. They report beneficial ownership of 78,320,018 Common Shares, representing 46.7% of the class, based on 167,707,493 shares outstanding as of May 31, 2026.
The filing explains that this figure reflects 77,070,018 shares already beneficially owned plus up to 1,250,000 additional shares Atlas Investissement expects to purchase on June 29, 2026 under Amended Equity Derivative Transaction Agreements with a bank. The amendment also increases the maximum equity notional, moves final maturity of these derivative agreements to June 29, 2026, and records an irrevocable election for cash settlement on separate European-style call spread option transactions.
Millicom International Cellular SA executive Karim Antonio Lesina reported an open-market sale of 42,497 Common Shares at 90.00 per share. After this transaction, he directly holds 118,101 Common Shares. The filing shows a net reduction in his directly owned stake, with no derivative positions reported in this filing.
The filing is a Form 144 notice related to proposed sales of common stock. It lists Nasdaq as the market, shows entries dated 06/05/2026 and securities tied to compensation with dates 01/01/2022 and 01/01/2025, and identifies J.P. Morgan Securities LLC as a broker.