T-Mobile US, Inc. 8-K

What Happened
T-Mobile US, through its subsidiary T‑Mobile USA, closed an underwritten public offering on January 12, 2026, issuing $1.15 billion of 5.000% Senior Notes due 2036 and $850 million of 5.850% Senior Notes due 2056 (total $2.0 billion). The offering was sold under an underwriting agreement dated January 7, 2026, with Deutsche Bank Securities, J.P. Morgan, RBC Capital Markets and UBS acting as lead representatives. The notes were issued under the company’s existing indenture framework and are initially guaranteed on a senior unsecured basis by T‑Mobile US and certain wholly‑owned subsidiaries.

Key Details

• Offering closed: January 12, 2026 (Underwriting Agreement dated Jan 7, 2026).
• Sizes & coupons: $1.15B of 5.000% notes due 2036; $850M of 5.850% notes due 2056.
• Use of proceeds: Net proceeds expected to be used to refinance existing indebtedness and for general corporate purposes.
• Security & documentation: Issued under the Base Indenture (dated Sept 15, 2022) with Thirty‑Eighth and Thirty‑Ninth Supplemental Indentures; initially guaranteed by the Company and certain subsidiaries (subject to release conditions).

Why It Matters
This transaction increases T‑Mobile’s long‑term debt by $2.0 billion, locking in fixed interest rates for the 2036 and 2056 maturities. For investors, the offering affects the company’s capital structure and future interest obligations, and the stated intent to use proceeds for refinancing could replace shorter‑term or higher‑cost debt. The filing also provides the formal legal documents (indentures and underwriting agreement) for review.