Eric W. Gerstenberg, Chief Operating Officer(CHESI) at CLEAN HARBORS INC (CLH), sold 35,926 shares at $100.28 ($3.6M) on 2021-08-20, disclosed to the SEC on 2021-08-23.
Open-market sale of $3.6M CLH by Chief Operating Officer(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.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $100.28 | 17,963 | $1.8M | 50.0% |
| 2 | $100.28 | 17,963 | $1.8M | 50.0% |
| Total | $100.28 avg | 35,926 | $3.6M | 100% |
| Filing → |
| CLH | SELL | 2026-03-19 | $293K | — | Filing → |
| CLH | SELL | 2025-12-17 | $290K | — | Filing → |
| CLH | SELL | 2025-06-09 | $3.6M | — | Filing → |