Albert J. Neupaver, Director at Koppers Holdings Inc. (KOP), bought 3,000 shares at $23.80 ($71K) on 2016-05-19, disclosed to the SEC on 2016-05-20.
Seasonal purchase ($71k) by Director — this insider has traded KOP in May in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
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