Deutsche Telekom Stake in T-Mobile US Rises to 55.9% Following Share Buybacks

Overview of Filing

On October 29, 2026, Deutsche Telekom AG filed Amendment No. 36 to its Schedule 13D regarding its holding in T-Mobile US, Inc. (NASDAQ: TMUS).

Key Takeaways

• Passive Stake Increase: The amendment was triggered by a decrease in T-Mobile US's total shares of Common Stock outstanding following ongoing share repurchases by the Issuer, rather than secondary market buying or direct purchases by Deutsche Telekom.
• Aggregate Beneficial Ownership: Deutsche Telekom and its wholly owned subsidiaries beneficially own 592,065,875 shares of Common Stock, representing 55.9% of outstanding shares as of October 23, 2026.
  • 582,065,875 shares are held directly by Deutsche Telekom Holding B.V.
  • 10,000,000 shares are held by Signal Bright LLC (SoftBank subsidiary) and subject to a voting proxy and call options held by Deutsche Telekom.
• No Market Activity by Reporting Persons: The filing confirms no transactions in TMUS common stock were executed by the Reporting Persons in the preceding 60 days.

Market & Strategic Impact

Because the rise in ownership percentage from prior levels to 55.9% is purely driven by issuer capital return activity (share repurchases), this filing carries Low direct trading significance, though it solidifies Deutsche Telekom's clear majority control over T-Mobile US.