![Mike Sievert](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Mike Sievert
Director/Board Member at
ALASKA AIR GROUP, INC.
Net worth: 22 M $ as of 2026-06-29
Profile
Mr. G. M. Sievert is a President & Chief Executive Officer at T-Mobile USA, Inc., a President & Chief Executive Officer at Sprint Corp., an Independent Director at Shaw Communications, Inc. and a President, Chief Executive Officer & Director at T-Mobile US, Inc. He is on the Board of Directors at Shaw Communications, Inc. and T-Mobile US, Inc. Mr. Sievert was previously employed as a Chief Executive Officer by Discovery Bay Games, Inc., a Chief Commercial Officer by Clearwire Corp., a Chief Executive Officer by Switchbox Labs, Inc., a Vice President-Worldwide Windows Group by Microsoft Corp., a Chief Marketing Officer & Executive Vice President by AT&T Wireless Services, Inc., a Chief Marketing & Sales Officer by E*Trade Group, Inc., a Program Director by International Business Machines Corp., and a Principal by Procter & Gamble Co. He also served on the board at Switch & Data Facilities Co., Inc. and Rogers Wireless Communications, Inc. He received his undergraduate degree from The Wharton School of the University of Pennsylvania.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
T-MOBILE US, INC. 0.01% | 2026-03-30 | 125,696 ( 0.01% ) | 21 M $ | 2026-06-29 |
| 2026-03-24 | 10,878 ( 0% ) | 1 M $ | 2026-06-29 | |
| 2026-05-31 | 4,258 ( 0% ) | 222 268 $ | 2026-06-29 |
Mike Sievert active positions
| Companies | Position | Start |
|---|---|---|
| T-MOBILE US, INC. | Director/Board Member | 2018-02-13 |
| STARBUCKS CORPORATION | Director/Board Member | 2024-01-08 |
| ALASKA AIR GROUP, INC. | Director/Board Member | 2026-05-31 |
Horizon Air Industries, Inc.
 Horizon Air Industries, Inc. AirlinesTransportation Operates a fleet of aircraft | Director/Board Member | 2026-05-31 |
Alaska Airlines, Inc.
 Alaska Airlines, Inc. AirlinesTransportation Operates as an airlines company | Director/Board Member | 2026-05-31 |
Assurance Wireless USA LP
 Assurance Wireless USA LP Specialty TelecommunicationsCommunications Provides wireless communications services | Chief Executive Officer | - |
T-Mobile USA, Inc.
 T-Mobile USA, Inc. Wireless TelecommunicationsCommunications Provides internet, voice, broadband, online banking services and sells online electronics | Director/Board Member | 2011-12-31 |
Former positions of Mike Sievert
| Companies | Position | End |
|---|---|---|
| SHAW COMMUNICATIONS INC. | Director/Board Member | 2023-03-31 |
Discovery Bay Games, Inc.
 Discovery Bay Games, Inc. Internet Software/ServicesTechnology Services Provides online video game services | Chief Executive Officer | 2012-10-31 |
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Training of Mike Sievert
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
96
1st degree connections
22
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 22 |
|---|---|
Alaska Air Group, Inc.
 Alaska Air Group, Inc. AirlinesTransportation Operates as a holding company, which through its subsidiaries, provides air transportation services | Transportation |
Alaska Airlines, Inc.
Alaska Airlines, Inc. AirlinesTransportation Operates as an airlines company | Transportation |
International Business Machines Corp.
 International Business Machines Corp. Information Technology ServicesTechnology Services Provides software, IT consulting, cloud and infrastructure services | Technology Services |
Microsoft Corp.
 Microsoft Corp. Packaged SoftwareTechnology Services Develops, manufactures and distributes software products | Technology Services |
Procter & Gamble Co.
 Procter & Gamble Co. Household/Personal CareConsumer Non-Durables Manufactures and sells fabric & home care products, diapers, baby wipes, tissues, toilet paper, hair, skin and personal care, toothbrushes, vitamins, supplements & razors | Consumer Non-Durables |
Starbucks Corp.
 Starbucks Corp. RestaurantsConsumer Services Produces and sells coffee and tea | Consumer Services |
E*TRADE Financial Corp.
 E*TRADE Financial Corp. Investment Banks/BrokersFinance Provides online stock brokerage and investing services | Finance |
Shaw Communications, Inc.
 Shaw Communications, Inc. Major TelecommunicationsCommunications Provides residential internet, wireless, video and telephone services | Communications |
T-Mobile USA, Inc.
T-Mobile USA, Inc. Wireless TelecommunicationsCommunications Provides internet, voice, broadband, online banking services and sells online electronics | Communications |
Rogers Wireless Communications, Inc.
 Rogers Wireless Communications, Inc. Major TelecommunicationsCommunications Provides wireless telecommunication services | Communications |
Switch & Data Facilities Co., Inc.
 Switch & Data Facilities Co., Inc. Data Processing ServicesTechnology Services Provides data center and internet exchange services | Technology Services |
Clearwire Corp.
 Clearwire Corp. Specialty TelecommunicationsCommunications Provides fourth generation wireless broadband services | Communications |
Discovery Bay Games, Inc.
Discovery Bay Games, Inc. Internet Software/ServicesTechnology Services Provides online video game services | Technology Services |
New Cingular Wireless Services, Inc.
 New Cingular Wireless Services, Inc. Wireless TelecommunicationsCommunications Provides wireless voice, data and video telecommunications services | Communications |
Horizon Air Industries, Inc.
Horizon Air Industries, Inc. AirlinesTransportation Operates a fleet of aircraft | Transportation |
Assurance Wireless USA LP
Assurance Wireless USA LP Specialty TelecommunicationsCommunications Provides wireless communications services | Communications |
Switchbox Labs, Inc.
 Switchbox Labs, Inc. Computer PeripheralsElectronic Technology Develops consumer technologies | Electronic Technology |
Sprint/United Management Co.
 Sprint/United Management Co. Miscellaneous Commercial ServicesCommercial Services Provides management services | Commercial Services |
T-Mobile US, Inc.
 T-Mobile US, Inc. Wireless TelecommunicationsCommunications Provides wireless voice, messaging and data services | Communications |
Sprint Corp.
 Sprint Corp. Wireless TelecommunicationsCommunications Provides wireless and wired telecommunications services | Communications |
The Wharton School of the University of Pennsylvania
 The Wharton School of the University of Pennsylvania Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
T-Mobile USA Foundation
 T-Mobile USA Foundation Investment Trusts/Mutual FundsMiscellaneous Functions as a foundation or endowment | Miscellaneous |
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