DALLAS -- Mark Cuban says hes a follow-the-rules investor who checked with his broker to make sure that his 2004 sale of stock in an Internet company was legal. Jason Thompson Warriors Jersey . Cuban testified Thursday that he was upset when the companys CEO told him news that would reduce the value of his shares, for which hed paid $7.5 million. But he said he did nothing improper when he sold those shares over the next two days. The Securities and Exchange Commission is suing the owner of the Dallas Mavericks for insider trading, claiming that he broke a promise of confidentiality and traded on private information that gave him an advantage over other investors. A jury in federal district court is hearing the civil lawsuit, which doesnt involve criminal charges. The case may hinge on a single phone call between Cuban and the CEO of Mamma.com Inc., a search-engine company based in Canada. In recorded testimony played to jurors this week, CEO Guy Faure said he told Cuban about the planned stock issuance. Faure said that Cuban agreed at the outset that the information would be confidential. Cuban testified that he was upset to learn about the stock offering, which would dilute the shares of earlier investors like himself, but he denied ever agreeing to keep the information confidential. He said he couldnt recall details of the conversation. Executives of Mamma.com, a search-engine company based in Canada, believed that Cuban had promised not to trade until the stock offering was publicly announced. Cuban said he would never have made such an agreement. "Nobodys going to tell me" when to trade, he said. An email from his broker at UBS suggested that Cuban asked if his sale of Mamma.com stock was legal. "I dont like to do anything thats not 100 per cent kosher," he wrote. Cuban said he had reasons beyond the stock offering for selling his shares, including concern over ties between Mamma.com and a convicted stock swindler, Irving Kott. But SEC lead lawyer Jan Folena produced an email exchange from early 2004, before Cuban sold his stock, in which he appeared to dismiss another investors worries about Kott. Folena also produced an email in which Cuban directed a reporter for his sharesleuth.com website to dig up dirt on Faure and Mamma.com. Folena said that Cuban wanted to discredit Faures recollection of the critical 2004 phone call. Folena charged Cuban of cheating because he couldnt stand the idea of losing on an investment. "You look at every loss in your life as a huge failure," she said. "Absolutely not," Cuban answered. Folena then quoted from a business article that Cuban wrote in which he said he took every loss as a huge failure. Cuban was Mamma.coms biggest shareholder, owning a 6 per cent stake. The SEC says Cuban avoided $750,000 in losses by selling on insider information before the shares fell by nearly 10 per cent once the private stock offering was announced. The SEC wants Cuban to give up that money and pay a fine. As Cuban took the witness stand Thursday, he was relaxed -- smiling and making a few jokes. He smiled less often as he jousted throughout the day with Folena. In the afternoon, guided by one of his lawyers, Cuban told the jury his life story -- growing up in Pittsburgh; graduating from Indiana University; moving to Dallas and sharing an apartment with five other guys; starting his first company at 25; becoming a billionaire in 1999 when he and his business partner sold Broadcast.com to Yahoo for $5.7 billion. Cuban looked directly at the jurors as he recounted buying the Mavericks. His wife no longer sits with him because he screams too much, and he misses some games to spend time with his three kids. "Im the luckiest guy in the world," he said of his wealth, which Forbes estimates at $2.5 billion. The jurors paid rapt attention; a few of them smiled. The trial will resume Monday. Stephen Curry Gold Jersey . The long-rumoured matchup between the biggest stars in womens MMA history appears increasingly possible after White confirmed Caranos interest in fighting Rousey, arguably the UFCs biggest current star. Andre Iguodala Autographed Jersey . Even though, the 2014 edition enjoyed three days of practice and four skates, in total, before the opener, Sidney Crosby and Co. VALLENTUNA, Sweden -- Hayley Wickenheiser scored twice to lead Canada to a 4-1 victory over Sweden in a tuneup game Monday ahead of the Four Nations womens hockey tournament. The star forward from Shaunavon, Sask., scored a power-play goal late in the second period and added an insurance goal early in the third period. Caroline Ouellette of Montreal opened the scoring less than four minutes into the game at Vallentuna Ishall Arena. Emma Eliasson tied it a few minutes later with a power-play goal on Charline Labonte of Boisbriand, Que. Jayna Hefford of Kingston, Ont., beat Swedish netminder Kim Martin late in the first period to restore Canadas lead. Canada opens the annual Four Nations tournament Wednesday against Finland at the Stora Hallen Arena in Nykoping, Sweden. The medal games are set for Sunday. Wickenheiser, Ouellette and Brianne Jenner of Oakville, Ont., shone as a forward line Monday, according to Canadian head coach Dan Church. "They were a force to be reckoned with all game, created chances off the rush and in the zone and on the power play," Church said. "Wick played very, very well." Martin finished with 47 saves. Labontte and Edmontons Shannon Szabados split Canadas goaltending duties and faced a combined 17 shots. Andre Iguodala Black Jersey. "Not a lot of shots although Sweden had a lot more chances in the first period and got a power-play goal against Charlie," Church said. Ouellette wasnt on Canadas original roster because of a lower-body injury, but she recovered in time for the tournament. She replaced forward Marie-Philip Poulin from Beauceville, Que. Poulin was named to the intial Four Nations roster, but was scratched because of an upper-body injury she suffered while playing for Boston University. "Caro healed faster than what was anticipated," Church said. "She had a strong game, was one of our top players in the game and was an impact player pretty much every shift she played. "Its fortunate we were able to add a player of her experience and talent for a young player like Poulin, which we would have loved to have had here as well." Canada has won 12 gold and three silver medals since the tournaments inception in 1996. 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