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Detailed Insider History for:
CLEAN HARBORS INC: CLH
Price: 3/13/26 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$288.93 $298.12 $178.29 $15,438 53 476 0.0% 2.1% 100.62% 5.65%
Exch Sector Industry Sub-Industry
NYSE Transportation, Communications, Electric, Gas, And Sanitary Services Electric, Gas, And Sanitary Services Hazardous Waste Management
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
1y
30
33%
21%
1
GERSTENBERG ERIC W
CEO
S
$293,000
1,000
---
3/18/26
---
$293.00
38,877
-2.5
D
---
3/19/26 - 3:19:08 pm
2
    
 
REED MARCY L
DIR
S
$240,718
836
---
3/18/26
---
$287.94
5,081
-14.1
D
---
3/19/26 - 3:18:21 pm
3
1y
25
40%
14%
1
WEBER BRIAN P
VP
S
$1,373,945
4,683
---
3/17/26
---
$293.39
48,728
-8.8
D
R
3/17/26 - 3:53:58 pm
4
    
 
WEBER BRIAN P
VP
JS
$277,373
2,829
---
3/13/26
---
$288.93
53,411
-5.0
D
R
3/17/26 - 3:53:58 pm
5
    
 
UNDERWOOD REBECCA
PR,VP
JS
$36,116
1,526
---
3/13/26
---
$288.93
18,684
-7.6
D
R
3/17/26 - 3:53:12 pm
6
    
 
GABRIEL SHARON M
VP,CIO
JS
$210,052
2,128
---
3/13/26
---
$288.93
21,065
-9.2
D
R
3/17/26 - 3:52:22 pm
7
    
 
GERSTENBERG ERIC W
CEO
JS
$282,285
3,143
---
3/13/26
---
$288.93
39,877
-7.3
D
R
3/17/26 - 3:51:31 pm
8
    
 
HARRISON ROBERT W
VP
JS
$5,201
386
---
3/13/26
---
$288.93
6,648
-5.5
D
R
3/17/26 - 3:11:30 pm
9
    
 
GEER CHARLES H II
VP
JS
---
139
---
3/13/26
---
---
10,839
-1.3
D
R
3/17/26 - 3:10:45 pm
10
    
 
DUGAS ERIC J
VP,CFO
JS
$182,026
1,954
---
3/13/26
---
$288.93
13,979
-12.3
D
R
3/17/26 - 3:09:57 pm
11
    
 
CURTIS GEORGE L
VP
JS
$101,126
1,378
---
3/13/26
---
$288.93
46,048
-2.9
D
R
3/17/26 - 3:08:59 pm
12
    
 
MCKIM ALAN S
CB,CTO,DIR
JS
$365,496
1,265
---
3/13/26
---
$288.93
32,762
-3.7
D
---
3/17/26 - 3:08:09 pm
13
    
 
BATTLES MICHAEL LOUIS
CEO,DIR
JS
$331,692
3,314
---
3/13/26
---
$288.93
95,387
-3.4
D
R
3/17/26 - 3:07:19 pm
14
1y
48
21%
28%
1
MCKIM ALAN S
CB,CTO,DIR
S
$29,265,000
100,000
---
3/4/26
---
$292.65
2,065,368
-4.6
I
---
3/5/26 - 11:07:23 am
15
1y
30
33%
21%
1
GERSTENBERG ERIC W
CEO
S
$699,650
2,500
---
2/23/26
---
$279.86
43,020
-5.5
D
---
2/24/26 - 3:33:57 pm
16
    
 
GABRIEL SHARON M
VP,CIO
S
$998,528
3,540
---
2/20/26
---
$282.07
23,193
-13.2
D
---
2/20/26 - 2:56:44 pm
17
1y
16
19%
26%
1
DUGAS ERIC J
VP,CFO
S
$784,292
2,788
---
2/20/26
---
$281.31
15,933
-14.9
D
---
2/20/26 - 2:55:24 pm
18
1y
48
21%
28%
1
MCKIM ALAN S
CB,CTO,DIR
S
$28,114,000
100,000
---
2/19/26
---
$281.14
2,275,368
-4.2
I
---
2/23/26 - 1:51:37 pm
19
    
 
MCKIM ALAN S
CB,CTO,DIR
JS
---
10,000
---
2/19/26
---
---
2,265,368
-0.4
I
---
2/23/26 - 1:51:37 pm
20
    
 
WELCH JOHN R
DIR
JS*
$204,803
750
---
2/19/26
---
$273.07
10,237
-6.8
D
---
2/20/26 - 2:54:02 pm
21
    
 
BATTLES MICHAEL LOUIS
CEO,DIR
JS
$1,352,832
5,205
---
2/2/26
---
$259.91
77,706
-6.3
D
R
2/3/26 - 3:41:01 pm
22
    
 
WEBER BRIAN P
VP
JS
$362,315
1,394
---
2/2/26
---
$259.91
52,018
-2.6
D
R
2/3/26 - 3:40:02 pm
23
    
 
UNDERWOOD REBECCA
PR,VP
JS
$110,462
425
---
2/2/26
---
$259.91
16,859
-2.5
D
R
2/3/26 - 3:38:37 pm
24
    
 
HARRISON ROBERT W
VP
JS
$47,823
184
---
2/2/26
---
$259.91
5,601
-3.2
D
R
2/3/26 - 3:37:45 pm
25
    
 
GERSTENBERG ERIC W
CEO
JS
$1,282,396
4,934
---
2/2/26
---
$259.91
45,520
-9.8
D
R
2/3/26 - 3:36:42 pm
26
    
 
GEER CHARLES H II
VP
JS
$51,202
197
---
2/2/26
---
$259.91
8,617
-2.2
D
R
2/3/26 - 3:35:33 pm
27
    
 
GABRIEL SHARON M
VP,CIO
JS
$132,034
508
---
2/2/26
---
$259.91
26,733
-1.9
D
R
2/3/26 - 3:33:42 pm
28
    
 
DUGAS ERIC J
VP,CFO
JS
$147,369
567
---
2/2/26
---
$259.91
18,721
-2.9
D
R
2/3/26 - 3:32:29 pm
29
    
 
DIDERICH JEROEN
VP,PR,SO
JS
$27,291
105
---
2/2/26
---
$259.91
13,667
-0.8
D
R
2/3/26 - 3:31:32 pm
30
    
 
CURTIS GEORGE L
VP
JS
$64,718
249
---
2/2/26
---
$259.91
47,415
-0.5
D
---
2/3/26 - 3:30:30 pm
31
    
 
BATTLES MICHAEL LOUIS
CEO,DIR
JB
---
20,980
---
2/1/26
---
---
98,686
27.0
D
R
2/3/26 - 3:41:01 pm
32
    
 
WEBER BRIAN P
VP
JB
---
4,222
---
2/1/26
---
---
56,240
8.1
D
R
2/3/26 - 3:40:02 pm
33
    
 
UNDERWOOD REBECCA
PR,VP
JB
---
3,351
---
2/1/26
---
---
20,210
19.9
D
R
2/3/26 - 3:38:37 pm
34
    
 
HARRISON ROBERT W
VP
JB
---
1,433
---
2/1/26
---
---
7,034
25.6
D
R
2/3/26 - 3:37:45 pm
35
    
 
GERSTENBERG ERIC W
CEO
JB
---
20,980
---
2/1/26
---
---
66,500
46.1
D
R
2/3/26 - 3:36:42 pm
36
    
 
GEER CHARLES H II
VP
JB
---
2,346
---
2/1/26
---
---
10,963
27.2
D
R
2/3/26 - 3:35:33 pm
37
    
 
GABRIEL SHARON M
VP,CIO
JB
---
2,639
---
2/1/26
---
---
29,372
9.9
D
R
2/3/26 - 3:33:42 pm
38
    
 
DUGAS ERIC J
VP,CFO
JB
---
4,088
---
2/1/26
---
---
22,809
21.8
D
R
2/3/26 - 3:32:29 pm
39
    
 
DIDERICH JEROEN
VP,PR,SO
JB
---
4,188
---
2/1/26
---
---
17,855
30.6
D
R
2/3/26 - 3:31:32 pm
40
    
 
GABRIEL SHARON M
VP,CIO
JS
$123,102
525
---
1/2/26
---
$234.48
27,241
-1.9
D
---
1/5/26 - 4:03:30 pm
41
    
 
WELCH JOHN R
DIR
JS
---
415
---
12/17/25
---
---
10,987
-3.6
D
---
12/29/25 - 3:54:18 pm
42
1y
30
33%
21%
1
GERSTENBERG ERIC W
CEO
S
$144,781
601
---
12/16/25
---
$240.90
50,454
-1.2
D
---
12/17/25 - 8:21:20 am
43
    
 
UNDERWOOD REBECCA
PR,VP
JS
$12,276
51
---
12/15/25
---
$240.71
17,284
-0.3
D
---
12/17/25 - 3:57:21 pm
44
    
 
HARRISON ROBERT W
VP
JS
$3,851
16
---
12/15/25
---
$240.71
5,785
-0.3
D
---
12/17/25 - 8:23:06 am
45
    
 
GEER CHARLES H II
VP
JS
$6,740
28
---
12/15/25
---
$240.71
8,814
-0.3
D
---
12/17/25 - 8:22:16 am
46
    
 
CURTIS GEORGE L
VP
JS
---
1,000
---
12/9/25
---
---
47,664
-2.1
D
---
12/11/25 - 8:53:06 am
47
    
 
HARRISON ROBERT W
VP
JS
$27,882
122
---
12/1/25
---
$228.54
5,801
-2.1
D
---
12/3/25 - 8:58:28 am
48
    
 
STATES LAUREN
DIR
JS
---
245
---
11/13/25
---
---
11,496
-2.1
D
---
11/14/25 - 10:37:26 am
49
    
 
GEER CHARLES H II
VP
JS
$61,890
294
---
11/1/25
---
$210.51
8,842
-3.2
D
---
11/4/25 - 8:19:04 am
50
    
 
MCKIM ALAN S
CB,CTO,DIR
JS
---
12,850
---
9/16/25
---
---
2,342,461
-0.5
I
---
9/17/25 - 12:12:53 pm
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