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Money & Work • Entrepreneur

Mark Cuban

Mark Cuban is an American businessman, investor, and television personality.

Updated July 27, 20261 min readCited sources

Mark Cuban is an American businessman, investor, and television personality. He is best known as the co-founder of Broadcast.com, former principal owner of the Dallas Mavericks, and a longtime investor on Shark Tank.

How he built his wealth

Cuban co-founded Broadcast.com, an internet audio and video streaming company, and sold it to Yahoo! in 1999 for billions, making him a billionaire. He later expanded into sports ownership, media, and other investments. Forbes estimated his net worth at US$6 billion in January 2026.

Shark Tank and public role

Cuban joined Shark Tank as an investor panelist in 2012 and remained through 2025, becoming one of the most recognizable 'sharks'. He also served as principal owner of the Dallas Mavericks (NBA) before becoming a minority owner.

Key details

Born July 31, 1958, in Pittsburgh, Pennsylvania. Married to Tiffany Stewart since 2002. He has been involved in entertainment and media ventures, including 2929 Entertainment.

In short

  • Co-founded Broadcast.com, sold to Yahoo! for billions.
  • Principal owner of Dallas Mavericks (now minority owner).
  • Appeared on Shark Tank from 2012 to 2025.
  • Net worth estimated at US$6 billion (2026).

Quick questions

How old is Mark Cuban?
He was born on July 31, 1958, which makes him 67 years old as of 2026.
What is Mark Cuban's net worth?
Forbes estimated his net worth at US$6 billion in January 2026.
How did Mark Cuban make his money?
He made much of his fortune by co-founding Broadcast.com and selling it to Yahoo! in 1999, then expanding into investments, sports ownership, and media ventures.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Mark_Cuban
    Supports: Birth date, business identity, ownership of the Dallas Mavericks, Shark Tank role, and Forbes net worth estimate.
  2. Encyclopaedia Britannica — https://www.britannica.com/money/Mark_Cuban
    Supports: Birth date, Broadcast.com co-founding, sale to Yahoo!, Dallas Mavericks ownership, and Shark Tank participation.
  3. Biography.com — https://www.biography.com/business-leaders/mark-cuban
    Supports: Broadcast.com sale, Dallas Mavericks ownership, Shark Tank role, and marriage to Tiffany Stewart.
  4. Bloomberg — https://www.bloomberg.com/billionaires/profiles/mark-cuban/
    Supports: Broadcast.com sale to Yahoo!, billionaire status, and business holdings.