Welch John R. (CIK 1611303) reported 5 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-22). Recent activity: Buy CLH (652 shares), Sell CLH (750 shares), Sell CLH (415 shares), Sell CLH (1,250 shares), Buy CLH (789 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-22 | CLEAN HARBORS INC (CLH) | Director | Buy | 652 | $0 |
| 2026-02-20 | CLEAN HARBORS INC (CLH) | Director | Sell | 750 | $204,802 |
| 2025-12-29 | CLEAN HARBORS INC (CLH) | Director | Sell | 415 | $0 |
| 2025-05-29 | CLEAN HARBORS INC (CLH) | Director | Sell | 1,250 | $285,638 |
| 2025-05-23 | CLEAN HARBORS INC (CLH) | Director | Buy | 789 | $0 |
Source: SEC Form 4 filings · as of 2026-05-22