Eric R. Lindgren, EVP/CIO (CHESI) at CLEAN HARBORS INC (CLH), sold 1,013 shares at $42.68 ($43K) on 2015-12-03, disclosed to the SEC on 2015-12-03.
Open-market sale of $43k CLH by EVP/CIO (CHESI). Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Something here stands out, but not much.