John R. Welch sold Clean Harbors Inc. ($CLH) shares on the open market twice in the last year, for a total of about $490,000. His most recent sale occurred on February 19, 2026. These sales rank 6,500th among over 11,600 individual insiders by value, well below the average of 8.6 million per seller across 6.4 transactions. Welch made no open market purchases in the period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 19, 2026 | CLEAN HARBORS INC | $CLH | Welch John R. | Not found | S | Common Stock | 750 | $273.07 | 10,237.0000 | 53,716,000 | 6.83% | 0.00% |
| Dec. 17, 2025 | CLEAN HARBORS INC | $CLH | Welch John R. | Not found | G | Common Stock | 415 | $0.00 | 10,987.0000 | 53,871,000 | 3.64% | 0.00% |
| May 28, 2025 | CLEAN HARBORS INC | $CLH | Welch John R. | Not found | S | Common Stock | 1250 | $228.51 | 11,402.0000 | 54,199,000 | 9.88% | 0.00% |
| May 21, 2025 | CLEAN HARBORS INC | $CLH | Welch John R. | Not found | A | Common Stock | 789 | $0.00 | 12,652.0000 | 54,199,000 | 6.65% | 0.00% |
| May 22, 2024 | CLEAN HARBORS INC | $CLH | Welch John R. | Not found | A | Common Stock | 836 | $0.00 | 11,863.0000 | 54,382,000 | 7.58% | 0.00% |
| Feb. 26, 2024 | CLEAN HARBORS INC | $CLH | Welch John R. | Not found | G | Common Stock | 1400 | $0.00 | 11,027.0000 | 54,382,000 | 11.27% | 0.00% |
| June 2, 2023 | CLEAN HARBORS INC | $CLH | Welch John R. | Not found | S | Common Stock | 1000 | $150.43 | 12,427.0000 | 54,487,000 | 7.45% | 0.00% |
| May 24, 2023 | CLEAN HARBORS INC | $CLH | Welch John R. | Not found | A | Common Stock | 1148 | $0.00 | 13,427.0000 | 54,487,000 | 9.35% | 0.00% |