The year he turned 23, he graduated from Indiana University with a degree in management. The year he turned 24, he moved to Dallas and took a job selling software.
The year he turned 32, he sold his computer consulting firm, MicroSolutions, to CompuServe for $6 million. The year he turned 37, he and Todd Wagner started AudioNet, later renamed Broadcast.com. The year he turned 40, he took the company public, and its stock rose to $62.75 a share on the first day of trading. The year he turned 41, Yahoo completed its acquisition of Broadcast.com.
The breakthrough yearThe year he turned 42, he agreed to buy the Dallas Mavericks from Ross Perot Jr. for $285 million.
The year he turned 43, the Mavericks made the playoffs. The next year, the team set a franchise record with 57 wins. The year he turned 45, he bought the Landmark Theatres chain and Magnolia Pictures.
The year he turned 46, USA Today described him as the host of ABC’s forthcoming The Benefactor. The year he turned 47, he was an executive producer of Good Night, and Good Luck. The year he turned 48, the Mavericks lost the NBA Finals to the Miami Heat. The year he turned 49, he competed on Dancing with the Stars.
The year he turned 53, the Mavericks beat the Heat in the NBA Finals, and he began appearing on Shark Tank. The year he turned 54, he became a full-time Shark Tank investor. The year he turned 55, his book How to Win at the Sport of Business came out in print. The year he turned 56, he launched the Cyber Dust app. The year he turned 57, he appeared in Entourage and gave $5 million to Indiana University.
The year he turned 63, he bought the town of Mustang, Texas. The year he turned 64, Cost Plus Drugs launched. The year he turned 65, the NBA approved the sale of the Mavericks’ controlling interest, and he announced his plan to leave Shark Tank. The year he turned 66, he gave $6 million to Indiana University’s rugby team.
The year he turned 67, he appeared in his final Shark Tank episode. The year he turned 68, CNBC described him as one of the Indiana football program’s biggest financial donors.
Mark Cuban started his career in 1982, the year he turned 24, moving to Dallas that year, and became known on Jan 4, 2000, the year he turned 42, when he agreed to buy the Dallas Mavericks. Yahoo completed its acquisition of Broadcast.com, which he cofounded, in 1999, the year he turned 41.
Ages are by calendar year (the year minus the birth year), birthdays aside.
Earned a degree in management at IU, according to CNBC and Biography.com.
Source 10 · CNBC · Mark Cuban’s money helped build Indiana University’s football team · opens in a new tabSource 02 · Biography.com · Mark Cuban · opens in a new tab Britannica gives 1980 as the graduation year.Left Pittsburgh for Dallas and took a job selling software. He later started his own consulting business, MicroSolutions.
Source 02 · Biography.com · Mark Cuban · opens in a new tabSource 03 · USA Today · Losing’s not an option for Cuban · opens in a new tab The year MicroSolutions was founded was not confirmed in news reports.The systems-integration firm was sold for $6 million.
Source 03 · USA Today · Losing’s not an option for Cuban · opens in a new tabSource 02 · Biography.com · Mark Cuban · opens in a new tabThe company streamed Indiana basketball games online and was later renamed Broadcast.com.
Source 03 · USA Today · Losing’s not an option for Cuban · opens in a new tabSource 01 · Britannica · Mark Cuban · opens in a new tabThe company went public in mid-1998, and its stock rose to $62.75 a share on the first day of trading.
Source 03 · USA Today · Losing’s not an option for Cuban · opens in a new tabCNET reported the deal at $5.04 billion when it closed. USA Today and Forbes give $5.7 billion as the price.
Source 04 · CNET · Yahoo completes Broadcast.com acquisition · opens in a new tabSource 03 · USA Today · Losing’s not an option for Cuban · opens in a new tabSource 12 · Forbes · Mark Cuban · opens in a new tabPaid $285 million to Ross Perot Jr. for the NBA team, according to NBA.com and ESPN.
The team made the playoffs after more than a decade without a postseason appearance, Biography.com reports.
Source 02 · Biography.com · Mark Cuban · opens in a new tabThe team won 57 games, a franchise record.
Source 02 · Biography.com · Mark Cuban · opens in a new tabWith Todd Wagner he also cofounded 2929 Entertainment, which developed and produced films.
Source 02 · Biography.com · Mark Cuban · opens in a new tabSource 01 · Britannica · Mark Cuban · opens in a new tabUSA Today reported in April 2004 that he ranked 179th the previous year, with a net worth of $1.3 billion.
Source 03 · USA Today · Losing’s not an option for Cuban · opens in a new tab The article says “last year” without naming the list date; 2003 is inferred from its April 2004 publication.USA Today described the reality show as forthcoming in April 2004.
Source 03 · USA Today · Losing’s not an option for Cuban · opens in a new tab Air date not confirmed in news reports.Biography.com lists him as an executive producer of the film, along with Akeelah and the Bee in 2006.
Source 02 · Biography.com · Mark Cuban · opens in a new tab Year is the film’s release year as listed by Biography.com.The Mavericks lost the NBA Finals to the Miami Heat.
Source 02 · Biography.com · Mark Cuban · opens in a new tabSource 01 · Britannica · Mark Cuban · opens in a new tabAppeared as a contestant on the ABC series.
Source 02 · Biography.com · Mark Cuban · opens in a new tabThe book was expanded and released in print in 2013.
Source 01 · Britannica · Mark Cuban · opens in a new tabThe Mavericks beat the Miami Heat 105-95 in Game 6 of the NBA Finals. He had owned the team since 2000.
Source 07 · The Washington Post · NBA Finals: Dirk Nowitzki and the Dallas Mavericks · opens in a new tabSource 02 · Biography.com · Mark Cuban · opens in a new tabTheWrap says he has been a full-time shark since 2012.
Source 08 · TheWrap · Mark Cuban Says Goodbye to Shark Tank · opens in a new tabSource 09 · USA Today · Mark Cuban leaves Shark Tank, reveals worst TV investment · opens in a new tab USA Today places his official start in Season 3.The expanded edition followed the 2011 e-book.
Source 01 · Britannica · Mark Cuban · opens in a new tabLaunched the social media app.
Source 02 · Biography.com · Mark Cuban · opens in a new tabAppeared in the film Entourage and played the U.S. president in Sharknado 3.
Source 02 · Biography.com · Mark Cuban · opens in a new tabThe gift went to a sports media center at his alma mater.
Source 10 · CNBC · Mark Cuban’s money helped build Indiana University’s football team · opens in a new tabCNN reported that the town had a population of 21 in the latest census.
Source 11 · CNN · Mark Cuban buys a small town in Texas · opens in a new tab Month is the CNN article date; the closing date was not confirmed.Cuban is a cofounder of the company, which aims to lower prescription drug prices, Forbes says.
Source 12 · Forbes · Mark Cuban · opens in a new tabSource 01 · Britannica · Mark Cuban · opens in a new tabThe Adelson and Dumont families bought the majority stake. Forbes says he sold 58% of the team.
Source 06 · NBA.com · NBA Board of Governors approve sale of Mavericks · opens in a new tabSource 12 · Forbes · Mark Cuban · opens in a new tabCNBC lists the gift among his donations to the school.
Source 10 · CNBC · Mark Cuban’s money helped build Indiana University’s football team · opens in a new tabCNBC described him as one of the football program’s biggest financial donors before the national championship game. He had not disclosed the size of his recent donations to IU’s athletic department.
Source 10 · CNBC · Mark Cuban’s money helped build Indiana University’s football team · opens in a new tab Date is the CNBC article date; the donation dates were not given.END OF SELECTED RECORDSSelected records, 1981–2026 · not a complete list of work. “Key moment” is an editorial label, not a measure of success.
What did they do, and at what age?
AgeTrail lines up the key moments of a life by age.
Debut and breakthrough are marked separately, and every record has a source.
Business · United States
Jul 31, 1958 —
Ages are counted from the birth year 1958: the year of the event minus 1958, birthdays aside. “Key moment” labels and the connecting story are AgeTrail's editorial reading.
Fact-checked: 2026.09.30 · An independent archive, not affiliated with the person or their agency.