Telephone Communications - Latest Activist Disclosures

This table shows recent activist investor (Schedule 13D) filings made in this industry. Any investor or hedge fund that makes an investment with the intention of influencing management is considered an activist investor and must file a 13D.

Date Form Target Company Investor Shares Ownership
(Percent)		 Ownership Change
(Percent)
2026-03-23 13D/A AR:TMUS / T-Mobile US, Inc. - Depositary Receipt (Common Stock) Deutsche Telekom Ag 592,065,875 53.70
2026-03-13 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 73,820,018 44.10 4.75
2026-02-12 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 42.20 0.00
2025-12-08 13D/A VOD / Vodafone Group Public Limited Company - Depositary Receipt (Common Stock) Emirates Telecommunications Group Co PJSC 3,944,743,685 16.63 0.00
2025-11-14 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 42.20 0.00
2025-10-06 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 628,168,603 55.80 -1.30
2025-09-22 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 42.20 0.00
2025-09-04 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 42.20 0.00
2025-08-22 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 42.20 0.00
2025-08-13 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 42.20 0.00
2025-08-12 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 636,411,404 56.50 -1.84
2025-08-12 13D/A SHEN / Shenandoah Telecommunications Company ECP ControlCo, LLC 6,774,728 11.60 9.11
2025-08-08 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 50,861,065 4.52 -20.36
2025-08-05 13D/A TDS / Telephone and Data Systems, Inc. Telephone & Data Systems Inc Voting Trust 1989 13,512,313 11.70
2025-08-05 13D/A AD / Array Digital Infrastructure, Inc. Telephone & Data Systems Inc /de/ 70,788,703 82.00
2025-07-01 13D/A WBD / Warner Bros. Discovery, Inc. Advance/newhouse Partnership 98,181,749 3.97
2025-06-20 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 648,359,244 57.10 -3.27
2025-06-20 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 63,861,065 5.62 -25.19
2025-06-12 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 670,278,284 59.00 0.00
2025-06-09 13D/A SHEN / Shenandoah Telecommunications Company ECP ControlCo, LLC 6,208,915 10.60 4.45
2025-05-23 13D/A SHEN / Shenandoah Telecommunications Company ECP ControlCo, LLC 5,944,451 10.20 0.00
2025-03-17 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 70,470,018 41.88 1.15
2025-03-14 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 670,278,284 58.70 0.00
2025-03-12 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 69,666,200 41.14 0.62
2025-03-05 13D/A ATEX / Anterix Inc. Heard Capital LLC 1,741,989 9.40 -0.58
2025-03-03 13D/A ES:TEF / Telefónica, S.A. Green Bridge Investment Co SCS 565,280,526 9.97 0.00
2025-02-18 13D/A SHEN / Shenandoah Telecommunications Company ECP ControlCo, LLC 5,944,451 10.20 2.22
2025-02-14 13D/A VOD / Vodafone Group Public Limited Company - Depositary Receipt (Common Stock) Emirates Telecommunications Group Co PJSC 3,944,743,685 15.62 0.00
2025-01-23 13D ES:TEF / Telefónica, S.A. Green Bridge Investment Co SCS 565,280,526 9.97
2024-12-27 13D/A AMX / América Móvil, S.A.B. de C.V. - Depositary Receipt (Common Stock) Helu Carlos Slim 31,162,513,785 51.00 0.56
2024-12-09 13D/A ATEX / Anterix Inc. Owl Creek Asset Management, L.P. 5,543,917 29.80 2.44
2024-10-11 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 69,236,111 40.37 0.00
2024-09-26 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 670,278,284 57.40
2024-09-09 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 69,236,111 40.42 0.00
2024-08-26 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 69,236,111 40.42 38.56
2024-08-08 13D/A ATEX / Anterix Inc. Heard Capital LLC 1,752,138 9.40 0.00
2024-08-05 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 49,966,734 29.17 0.00
2024-08-01 13D/A SHEN / Shenandoah Telecommunications Company ECP ControlCo, LLC 5,815,571 10.00 0.99
2024-07-29 13D ATEX / Anterix Inc. Heard Capital LLC 1,752,138 9.40 -4.23
2024-07-22 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 49,966,734 29.18 0.00
2024-07-03 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 49,966,734 29.18 0.00
2024-07-03 13D/A TDS / Telephone and Data Systems, Inc. Telephone & Data Systems Inc Voting Trust 1989
2024-07-02 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 57.00
2024-07-02 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 85,361,065 7.26 0.00
2024-06-13 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 57.20
2024-06-11 13D/A TMUS / T-Mobile US, Inc. Deutsche Telekom Ag 57.20
2024-06-11 13D/A TMUS / T-Mobile US, Inc. SoftBank Group Capital Ltd 85,361,065 7.26 -7.31
2024-05-29 13D/A TDS / Telephone and Data Systems, Inc. Telephone & Data Systems Inc Voting Trust 1989
2024-05-23 13D/A TIGO / Millicom International Cellular S.A. Atlas Investissement 49,966,734 29.19 0.00
2024-05-17 13D SHEN / Shenandoah Telecommunications Company GCM Investments GP, LLC 4,100,375 7.50