John R. Welch, Director at CLEAN HARBORS INC (CLH), sold 2,500 shares at $228.51 ($571K) on 2025-05-28, disclosed to the SEC on 2025-05-29.
Seasonal sale ($571k) by Director — this insider has traded CLH in May in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $228.51 | 1,250 | $286K | 50.0% |
| 2 | $228.51 | 1,250 | $286K | 50.0% |
| Total | $228.51 avg | 2,500 | $571K | 100% |
| Filing → |
| CLH | SELL | 2021-08-09 | $545K | — | Filing → |