![Thomas Siebel](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>)
Thomas Siebel
Chief Executive Officer at
C3.AI, INC.
Net worth: 131 M $ as of 2026-05-30
Profile
Founder of 5 different companies, notably: Siebel Systems, Inc., Meth Project Foundation, Inc. and First Virtual Group, Inc. Thomas M. Siebel is an entrepreneur and businessperson who has been at the head of 7 different companies and currently is Chairman & Chief Executive Officer at C3.ai, Inc. (which he founded in 2009), Chairman at First Virtual Group, Inc. (which he founded in 2011) and Chief Executive Officer at The Thomas & Stacey Siebel Foundation. Mr. Siebel is also Chairman at Meth Project Foundation, Inc. (he founded the company), Chairman at Siebel Scholars Foundation (he founded the company in 2010), Chairman at Agora Foundation, Inc. and Member of American Academy of Arts & Sciences and on the board of 5 other companies. Mr. Siebel previously occupied the position of Vice President of Oracle Corp. and Chairman for Siebel Systems, Inc. (a subsidiary of Oracle Corp.). Mr. Siebel received an undergraduate degree, a graduate degree and an MBA from the University of Illinois.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
C3.AI, INC. CLASS A 6.43% | 2026-06-02 | 9,113,838 ( 6.43% ) | 98 M $ | 2026-05-30 |
C3.AI, INC. 87.8% | 2026-03-30 | 3,072,820 ( 87.8% ) | 33 M $ | 2026-05-30 |
Latest news about Thomas Siebel
Thomas Siebel active positions
| Companies | Position | Start |
|---|---|---|
| C3.AI, INC. | Chief Executive Officer | 2026-05-07 |
University of Illinois At Urbana–Champaign
 University of Illinois At Urbana–Champaign Other Consumer ServicesConsumer Services Functions as a College/University | Director/Board Member | - |
UC Berkeley College of Engineering
 UC Berkeley College of Engineering Other Consumer ServicesConsumer Services Functions as a College/University | Director/Board Member | - |
Uiuc College of Engineering
 Uiuc College of Engineering Other Consumer ServicesConsumer Services Functions as a College/University | Director/Board Member | - |
American Academy of Arts & Sciences
 American Academy of Arts & Sciences Miscellaneous Commercial ServicesCommercial Services Operates as organization which honours excellence and convenes leaders | Corporate Officer/Principal | 2013-03-31 |
The Thomas & Stacey Siebel Foundation
 The Thomas & Stacey Siebel Foundation Investment Trusts/Mutual FundsMiscellaneous Engages in supporting programs and organizations that work to improve quality of life, environment and education | Chief Executive Officer | - |
Meth Project Foundation, Inc. | Founder | - |
Agora Foundation, Inc. | Chairman | - |
The Hoover Institution
 The Hoover Institution Miscellaneous Commercial ServicesCommercial Services Operates as research center dedicated to supporting knowledge in economics, politics, history and public policy | Director/Board Member | - |
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Former positions of Thomas Siebel
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Training of Thomas Siebel
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
86
1st degree connections
16
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 16 |
|---|---|
Oracle Corp.
 Oracle Corp. Packaged SoftwareTechnology Services Provides cloud based enterprise applications and infrastructure technologies & license, hardware and IT services | Technology Services |
Siebel Systems, Inc.
 Siebel Systems, Inc. Packaged SoftwareTechnology Services Develops customer relationship management software | Technology Services |
Princeton University
 Princeton University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of California, Berkeley
 University of California, Berkeley Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
American Academy of Arts & Sciences
American Academy of Arts & Sciences Miscellaneous Commercial ServicesCommercial Services Operates as organization which honours excellence and convenes leaders | Commercial Services |
The Hoover Institution
The Hoover Institution Miscellaneous Commercial ServicesCommercial Services Operates as research center dedicated to supporting knowledge in economics, politics, history and public policy | Commercial Services |
C3.ai, Inc.
 C3.ai, Inc. Packaged SoftwareTechnology Services Provides comprehensive unified software development and enterprise applications solutions | Technology Services |
First Virtual Group, Inc.
 First Virtual Group, Inc. Financial ConglomeratesFinance Functions as an investment holding company | Finance |
Siebel Scholars Foundation
 Siebel Scholars Foundation Miscellaneous Commercial ServicesCommercial Services Operates as a non-profit organization that supports graduate schools of business, computer science, bioengineering and energy sciences | Commercial Services |
Meth Project Foundation, Inc. | |
Agora Foundation, Inc. | |
The Thomas & Stacey Siebel Foundation
The Thomas & Stacey Siebel Foundation Investment Trusts/Mutual FundsMiscellaneous Engages in supporting programs and organizations that work to improve quality of life, environment and education | Miscellaneous |
Uiuc College of Engineering
Uiuc College of Engineering Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
UC Berkeley College of Engineering
UC Berkeley College of Engineering Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Elixinol Wellness Ltd.
 Elixinol Wellness Ltd. Pharmaceuticals: OtherHealth Technology Manufactures and distributes nutraceutical & related hemp products | Health Technology |
University of Illinois At Urbana–Champaign
University of Illinois At Urbana–Champaign Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
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