As filed with the Securities and Exchange Commission on February 28, 2020 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . OR ☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of event requiring this shell company report Commission file number: ...

Millicom International Cellular S.A. (NASDAQ:TIGO) Q4 2019 Earnings Conference Call February 25, 2020 8:00 AM ET Company Participants Michel Morin - Vice President, Investor Relations Tim Pennington - Chief Financial Officer Mauricio Ramos - Chief Executive Officer Conference Call Participants Fredrik Lithell - Danske Bank Kevin Roe - Roe Equity Research Soomit Datta - New Street Research Peter Nielsen - ABG Lena Osterberg - Carnegie Stefan Gauffin - DNB Johanna Ahlqvist - SEB Operator Ladies and gentlemen, ...

As filed with the Securities and Exchange Commission on February 28, 2019 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition p ...