Martin J. Emerson, Director at VASCULAR SOLUTIONS INC (VASC), sold 20,000 shares at $37.93 ($759K) on 2016-05-13, disclosed to the SEC on 2016-05-16.
Seasonal sale ($759k) by Director — this insider has traded VASC in May in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.