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DALLAS (AP/WFAA) Dallas Mavericks owner Mark Cuban is expected to testify in his federal trial scheduled to begin Monday on charges that he benefited from insider trading.

The billionaire is accused of using insider information to dump his stock in a small Internet-search company in 2004 just before the shares fell in value. He avoided $750,000 in losses. The Securities and Exchange Commission wants Cuban to give up the money and pay a civil penalty.

The SEC's key evidence is a phone call between Cuban and the CEO of Mamma.com. According to the SEC, the CEO told Cuban he had confidential information to share and Cuban agreed to keep it to himself.

Cuban disputes the SEC's claims, and his lawyers argue that insider-trading laws didn't prohibit him from selling his shares.

Standing outside the Earle Cabell Federal Building downtown on Monday, Cuban said he looks forward to defending himself in court.

'I'm excited about this finally coming to court; I won't be bullied, that's the key element,' Cuban said. 'The thing that I'm really looking forward to is shedding some sunlight on how the SEC really works.'

When asked to elaborate, Cuban said, 'We'll just leave it at that' and walked inside the building.

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