Eric W. Gerstenberg, Chief Operating Officer(CHESI) at CLEAN HARBORS INC (CLH), sold 8,000 shares at $55.19 ($442K) on 2018-06-25, disclosed to the SEC on 2018-06-25.
Seasonal sale ($442k) by Chief Operating Officer(CHESI) — this insider has traded CLH in June in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| Filing → |
| CLH | SELL | 2026-03-19 | $293K | — | Filing → |
| CLH | SELL | 2025-12-17 | $290K | — | Filing → |
| CLH | SELL | 2025-06-09 | $3.6M | — | Filing → |