1. Clean Harbors, Inc.
  2. Clean Harbors, Inc. Ownership

Historical shareholding details of Oberweis Asset Management Inc holdings in Clean Harbors, Inc. (CLH)

Monthly changes of Oberweis Asset Management Inc shareholding in Clean Harbors, Inc. over the previous months

Month Name Total no. shares held Percent Holding
Mar 31, 2025 Oberweis Asset Management Inc 187,800 0.35%
Feb 28, 2025 Oberweis Asset Management Inc 187,800 0.35%
Jan 31, 2025 Oberweis Asset Management Inc 192,600 0.36%
Dec 31, 2024 Oberweis Asset Management Inc 102,430 0.19%
Dec 31, 2024 Oberweis Asset Management Inc 192,600 0.36%
Nov 30, 2024 Oberweis Asset Management Inc 192,600 0.36%
Oct 31, 2024 Oberweis Asset Management Inc 186,000 0.35%
Sep 30, 2024 Oberweis Asset Management Inc 105,370 0.20%
Sep 30, 2024 Oberweis Asset Management Inc 186,000 0.34%
Aug 31, 2024 Oberweis Asset Management Inc 186,000 0.34%
Jul 31, 2024 Oberweis Asset Management Inc 164,200 0.30%
Jun 30, 2024 Oberweis Asset Management Inc 103,245 0.19%
Jun 30, 2024 Oberweis Asset Management Inc 142,400 0.26%
May 31, 2024 Oberweis Asset Management Inc 142,400 0.26%
Apr 30, 2024 Oberweis Asset Management Inc 93,800 0.17%
Mar 31, 2024 Oberweis Asset Management Inc 81,295 0.15%
Mar 31, 2024 Oberweis Asset Management Inc 93,800 0.17%
Feb 29, 2024 Oberweis Asset Management Inc 93,800 0.17%
Jan 31, 2024 Oberweis Asset Management Inc 71,800 0.13%
Dec 31, 2023 Oberweis Asset Management Inc 71,800 0.13%
Nov 30, 2023 Oberweis Asset Management Inc 72,000 0.13%
Oct 31, 2023 Oberweis Asset Management Inc 72,000 0.13%
Sep 30, 2023 Oberweis Asset Management Inc 45,415 0.08%
Sep 30, 2023 Oberweis Asset Management Inc 72,200 0.13%
Aug 31, 2023 Oberweis Asset Management Inc 77,800 0.14%
Jul 31, 2023 Oberweis Asset Management Inc 83,400 0.15%
Jun 30, 2023 Oberweis Asset Management Inc 45,105 0.08%
Jun 30, 2023 Oberweis Asset Management Inc 83,400 0.15%
May 31, 2023 Oberweis Asset Management Inc 78,400 0.14%
Mar 31, 2023 Oberweis Asset Management Inc 50,835 0.09%
Dec 31, 2022 Oberweis Asset Management Inc 48,335 0.09%

View all ownership details of Clean Harbors, Inc.