T-Mobile (TMUS): Deutsche Telekom AG raised its TMUS stake to 55.9% from 53.7% 55.9%

55.9%

Stake · was 53.7%

592M

Shares owned

Stake as of

Oct 28, 2026

Filed

Oct 29, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Sep 1, 2026Company filing · Form 8-K · Executive change, Reg FDChanged a top executive or board member, and shared information with investors“On September 3, 2026, T-Mobile US, Inc. (“T-Mobile” or the “Company”) announced that Peter Osvaldik, Chief Financial Officer of the Company, would retire from his role as Chief Financial Officer in February 2027.”
2. Sep 10, 2026InsiderOfficer sold ~$138K of TMUS shares in the open market
3. Oct 26, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On October 26, 2026, G. Michael Sievert notified the Board of Directors (the “Board”) of T-Mobile US, Inc. (the “Company”) of his decision to resign from the Board and its Transaction Committee, effective November 1, 2026.”
4. Oct 28, 2026Company filing · Form 8-K · ResultsReported its results

What came next

1. Oct 29, 20265% stakeDeutsche Telekom AG filed an activist stake (13D) of 55.9%
2. Nov 2, 2026InsiderOfficer sold ~$17K of TMUS shares in the open market

How to read SEC Schedule 13D

A Schedule 13D and a Schedule 13G both disclose beneficial ownership of more than 5% of a US company's voting shares. A 13D is the long form, filed by holders who may seek to influence or control the company, and it must state what they intend to do. A 13G is the short form, open only to passive holders and to certain institutions holding in the ordinary course of business, and it asks no question about intent.

Full guide: Schedule 13D vs Schedule 13G: what is the difference?

What else is on file for T-Mobile

For T-Mobile, OQRO holds 4 insider filings (SEC Form 4 or Form 144) and 4 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its TMUS page.

How this filing works

• Schedule 13D vs 13G

Other disclosures at T-Mobile

• SEC Form 4Nov 3, 2026
• SEC Form 144Nov 2, 2026
• SEC Form 4Sep 14, 2026
• SEC Form 144Sep 10, 2026
• SEC Form 13F-HRAug 26, 2026
• SEC Form 13F-HRAug 25, 2026

Everything OQRO holds on this company is on its TMUS page.