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Welch John R.
Director at CLEAN HARBORS. Filing since 5 Aug 2021.
CIK 0001611303
Company
Date
Role
Action
Shares
Amount
Of holding
CLH
CLEAN HARBORS INC
19 Feb 2026
Director
Sold at will
750
$204.80K
6.8%
CLH
CLEAN HARBORS INC
28 May 2025
Director
Sold at will
1,250
$285.64K
9.9%
CLH
CLEAN HARBORS INC
2 Jun 2023
Director
Sold at will
1,000
$150.43K
7.4%
CLH
CLEAN HARBORS INC
5 Aug 2021
Director
Sold, plan not stated
5,500
$544.78K
35.1%
4 decisions on file.
