Leroy C. Hanneman, Director at SOUTHWEST GAS CORP (SWX), sold 6,300 shares at $47.61 ($300K) on 2013-03-26, disclosed to the SEC on 2013-03-27.
Seasonal sale ($300k) by Director — this insider has traded SWX in March in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
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