Thomas Siebel Net Worth
Estimated net worth (2026)
$4 billion
Who is Thomas Siebel?
Thomas Siebel is a highly successful American entrepreneur and technologist known for building substantial wealth through innovative technology ventures. He is best recognized for founding the enterprise software company Siebel Systems and leading the development of artificial intelligence platforms. Siebel was instrumental in creating C3.ai, an influential software application company, demonstrating his expertise in the tech sector. Today, he continues to leverage this success as the chairman of First Virtual Group, managing a diversified holding company, reflecting his enduring influence in the business world.
Known for
Entrepreneur
Wealth from
Business software
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Compare your net worth →Net worth figure (2026) sourced from Forbes; biography adapted from Wikipedia. Net worth figures are estimates and may vary by source.