Mike Sievert: Email & Phone Number

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Vice Chairman at T-Mobile|Bellevue, Washington, United States

Position:

Vice Chairman at T-Mobile

Location:

Bellevue, Washington, United States

View Mike Sievert's Email

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Last updated: 2026-10-15

Updated: 2026-10-15

Found email addresses for Mike Sievert:

Business emails:

m**********t@t-mobile.com,

s*****t@thesieverts.com,

m**********t@tmobile.com

Personal emails:

s*****t@live.com,

m*********t@gmail.com,

m***s@shaw.ca

Found phone for Mike Sievert:

+1-***-***-0670

Prospect analytics

Current work details

DepartmentTelecommunications, Retail

Availability

TimezonePDT

Best time to contact12:00 PM – 4:00 PM

A different Mike Sievert?

Work Experience 36 years

Vice Chairman at T-Mobile

Nov 2025 - Current

Director, Board of Directors at T-Mobile

Feb 2018 - Current

CEO and President at T-Mobile

Apr 2020 - Nov 2025

President and COO at T-Mobile

Apr 2018 - Apr 2020

Chief Operating Officer at T-Mobile

Feb 2015 - Apr 2020

Executive VP and Chief Marketing Officer at T-Mobile

Nov 2012 - Feb 2015

Director, Board of Directors at Starbucks

Jan 2024 - Current

Investor and Entrepreneur at Seattle Area Technology Companies

Feb 2008 - Current

Director, Board of Directors at Shaw Communications

Jan 2018 - Apr 2023

Chief Commercial Officer and Chairman of Operating Committee at Clearwire

May 2009 - Jun 2011

Director, Board of Directors at Switch and Data

Feb 2008 - May 2010

Director, Vice-Chair at Washington National Park Fund

Sep 2006 - May 2010

Co-Founder, CEO at Switchbox Labs, Inc. (acquired by Lenovo, Inc.)

Mar 2008 - May 2009

Corporate Vice President, Global Windows Group at Microsoft

Feb 2005 - Feb 2008

Executive VP, Chief Marketing Officer at AT&T

Feb 2002 - Feb 2005

Director, Board of Directors Rogers Wireless at Rogers Communications

Jan 2002 - Jan 2004

Chief Sales and Marketing Officer at E*TRADE from Morgan Stanley

Oct 1998 - Oct 2001

Program Director, IBM PC Worldwide Product Management at IBM

Sep 1996 - Oct 1998

Brand Management at Procter & Gamble

Jan 1990 - Jan 1996

Mike Sievert started working in 1990, then the employee has changed 13 companies and 15 jobs. On average, Mike Sievert works for one company for 4 years 2 months.

Their professional focus is Analytics, B2B, and Brand Management across 3 core areas.

Education

Bachelor of Science (B.S.) at University of Pennsylvania - The Wharton School

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