Insider Activity of Welch John R.
The largest sale of all time was on 2021-08-05 and amounted to 5500 shares of Clean Harbors, Inc. for $544,775.
Biography of Welch John R.
No biography is available at this moment.
The largest sale of all time was on 2021-08-05 and amounted to 5500 shares of Clean Harbors, Inc. for $544,775.
No biography is available at this moment.
| 2023-06-02 | Sale | Clean Harbors, Inc. CLH | director | 1,000 0.0018% | $150.43 | $150,430 | +12.3% | |
| 2021-08-05 | Sale | Clean Harbors, Inc. CLH | director | 5,500 0.0101% | $99.05 | $544,775 | +0.84% |