W. Leslie Duffy, Director at LYDALL INC /DE/ (LDL), sold 20,000 shares at $53.76 ($1.1M) on 2017-03-20, disclosed to the SEC on 2017-03-22.
Seasonal sale ($1.1M) by Director — this insider has traded LDL in March in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.