Serial entrepreneur, Shark Tank favorite, and brilliant business speaker, Mark Cuban built an empire on hard work and youthful enthusiasm. A spirited and insightful keynote speaker, Mark Cuban blends his world-famous verve with lessons learned over a lifetime of accomplishment.

Fortune favors the bold, and few entrepreneurs have been as bold, or as successful, as Mark Cuban. When Cuban’s father refused to buy him an expensive pair of sneakers, he launched an extraordinary career. Cuban used what he had on hand and sold garbage bags door-to-door to neighbors. He got his sneakers, and never lost his nose for business.

After graduating from Indiana University, Cuban moved to Dallas, where he founded MicroSolutions, a consultancy later sold to CompuServe. After the sale, Cuban and good friend Todd Wagner hit upon a groundbreaking idea: live-streaming sporting events and radio shows. The two founded AudioNet, later renaming it Broadcast.com, and took the company public in 1998. In the midst of the tech bubble, Yahoo bought Broadcast.com for nearly $6 billion in stock. Cuban’s share, which he sold near its all-time high, earned him nearly $2 billion.

Cuban then bought a majority stake in the NBA’s Dallas Mavericks. Under his leadership, Dallas reached its first NBA finals in 2006 and won its first championship in 2011. Since Cuban bought the franchise, its value has risen by a factor of nearly ten.

He continued to found companies and invest in others, launching HDNET in 2001 and building a diverse portfolio of businesses. His group of Shark Tank-related investments alone represents more than 50 companies across several industries.