Thomas Siebel Overview

  • Investor Type
  • Angel

  • Investments
  • 1

  • Portfolio
  • 1

  • Exits
  • 1


Thomas Siebel General Information


Dr. Thomas Siebel is the Founder and serves as Chief Executive Officer & Chairman at He is an Angel Investor. He is also a Co-Founder and serves as the President at The Thomas And Stacey Siebel Foundation. He was the Chairman and Chief Executive Officer of Siebel Systems, which merged with Oracle Corporation in January 2006. Founded in 1993, Siebel Systems became a leader in application software with more than 8,000 employees in 32 countries, over 4,500 corporate customers, and an annual revenue in excess of $2 billion. Mr. Siebel is also Chairman of the Siebel Energy Institute, a global consortium for innovative and collaborative energy research for the public domain. Mr. Siebel serves on the boards of advisors for the Stanford University College of Engineering, the University of Illinois College of Engineering, and the University of California at Berkeley College of Engineering. Mr. Siebel is a graduate of the University of Illinois at Urbana-Champaign, where he received a B.A. in history, an M.B.A., and an M.S. in computer science.

Business Details

Primary Investor Type
Angel (individual)
Corporate Office
  • Woodside, CA
  • United States

Thomas Siebel Investments (1)

Company Name Deal Date Deal Type Deal Size Industry Company Stage Lead Partner 17-Jan-2018 00000 00000 00000 Business/Productivity Software Generating Revenue/Not Profitable 000000 000000 00.0

Thomas Siebel Exits (1)

Company Name Exit Date Exit Type Exit Size 09-Dec-2020 000 00000

Thomas Siebel Investments by Industry, Year, and Region

Investments by Industry

Investments by Year

Investments by Region

PitchBook’s data visualizations quickly surface an investor’s historical investments—showing a breakdown of activity by industry, year and region.

Thomas Siebel Team (1)

Name Title Deals Funds Boards Office
Thomas Siebel Ph.D Angel Investor 0 0 Woodside, CA

Thomas Siebel FAQs

  • Who is Thomas Siebel?

    Thomas Siebel is an angel Investor who has made 1 investment.

  • What kind of investor is Thomas Siebel?

    Thomas Siebel is an angel investor.

  • What does Thomas Siebel do?

    As an angel investor, Thomas Siebel invests personal money into promising companies, typically in exchange for equity.

  • What has Thomas Siebel invested in?

    Thomas Siebel has invested in within the Business/Productivity Software industry.

  • What has Thomas Siebel invested in recently?

    Thomas Siebel's latest investment was on 17-Jan-2018 in, a company within the Business/Productivity Software industry.

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