Melvin K. Spigelman, Director at MEDICINES CO /DE (MDCO), sold 15,000 shares at $37.00 ($555K) on 2016-05-24, disclosed to the SEC on 2016-05-26.
Seasonal sale ($555k) by Director — this insider has traded MDCO in May in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
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