Mike Sievert, president & chief executive officer, and Srini Gopalan, chief operating officer of T-Mobile US, Inc. (NASDAQ: TMUS), will present and provide a business update on Wednesday, September 10, 2025 at 12:25 p.m. Pacific Daylight Time (PDT) at the Goldman Sachs Communacopia + Technology Conference.

A live webcast of the event will be available on the Company’s Investor Relations website at https://investor.t-mobile.com. An on-demand replay will be available shortly after the conclusion of the presentation.

To automatically receive T-Mobile financial news by e-mail, please visit the T-Mobile Investor Relations website, https://investor.t-mobile.com, and subscribe to E-mail Alerts.

About T-Mobile US, Inc.

T-Mobile US, Inc. (NASDAQ: TMUS) is America’s supercharged Un-carrier, delivering an advanced 4G LTE and transformative nationwide 5G network that will offer reliable connectivity for all. T-Mobile’s customers benefit from its unmatched combination of value and quality, unwavering obsession with offering them the best possible service experience and undisputable drive for disruption that creates competition and innovation in wireless and beyond. Based in Bellevue, Wash., T-Mobile provides services through its subsidiaries and operates its flagship brands, T-Mobile, Metro by T-Mobile, and Mint Mobile. For more information please visit: https://www.t-mobile.com.

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