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 JS
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Detailed Insider History for:
GREAT LAKES DREDGE AND DOCK CORP: GLDD
Price: 5/23/25 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
$10.93 $12.89 $7.51 $742 68 524 0.0% 1.7% 84.23% 2.43%
Exch Sector Industry Sub-Industry
NasdaqGS Construction Heavy Construction Other Than Building Construction Contractors Heavy Construction Other Than Bldg Const- Contractors
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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
6m
1
100%
-9%
2
STEGER RONALD
DIR
S
$57,925
5,000
---
6/3/25
---
$11.59
20,404
-19.7
D
---
6/4/25 - 5:00:10 pm
2
    
 
BEYKO ELENI
VP
JB
---
40,000
---
5/8/25
---
---
90,138
79.8
D
R
5/12/25 - 6:14:04 pm
3
    
 
PETTERSON LASSE
CEO,PR,DIR
JB
---
125,145
---
5/8/25
---
---
1,159,377
12.1
D
R
5/12/25 - 5:57:20 pm
4
    
 
KORNBLAU SCOTT LEE
VP,CFO
JB
---
25,058
---
5/8/25
---
---
171,935
17.1
D
R
5/12/25 - 5:54:19 pm
5
    
 
SCHIFFER VIVIENNE
VP,LO,CCO,SEC
JB
---
18,035
---
5/8/25
---
---
82,181
28.1
D
R
5/12/25 - 5:51:22 pm
6
    
 
GUNSTEN CHRISTOPHER
VP
JB
---
13,179
---
5/8/25
---
---
85,952
18.1
D
R
5/12/25 - 5:46:17 pm
7
    
 
JOHANSON DAVID
VP,OO
JB
---
13,179
---
5/8/25
---
---
104,063
14.5
D
R
5/12/25 - 5:41:51 pm
8
    
 
HANSON WILLIAM H
VP
JB
---
8,237
---
5/8/25
---
---
68,977
13.6
D
R
5/12/25 - 5:38:08 pm
9
    
 
BEYKO ELENI
VP
JB
---
15,376
---
5/8/25
---
---
105,514
17.1
D
R
5/12/25 - 5:33:06 pm
10
    
 
BAYER RYAN
VP,CAO
JB
---
10,126
---
5/8/25
---
---
24,574
70.1
D
R
5/12/25 - 5:28:27 pm
11
    
 
BEYKO ELENI
VP
AS
$231,600
22,579
---
5/6/25
---
$10.26
50,138
-31.1
D
10b
5/8/25 - 5:43:29 pm
12
    
 
SCHIFFER VIVIENNE
VP,LO,CCO,SEC
JS
$16,724
1,753
---
5/5/25
---
$9.54
64,146
-2.7
D
---
5/7/25 - 5:53:05 pm
13
    
 
PETTERSON LASSE
CEO,PR,DIR
JS
$43,321
4,541
---
5/5/25
---
$9.54
1,034,232
-0.4
D
---
5/7/25 - 5:49:36 pm
14
    
 
KORNBLAU SCOTT LEE
VP,CFO
JS
$26,197
2,746
---
5/5/25
---
$9.54
146,877
-1.8
D
---
5/7/25 - 5:44:57 pm
15
    
 
JOHANSON DAVID
VP,OO
JS
$7,871
825
---
5/5/25
---
$9.54
90,884
-0.9
D
---
5/7/25 - 5:40:25 pm
16
    
 
HANSON WILLIAM H
VP
JS
$5,724
600
---
5/5/25
---
$9.54
60,740
-1.0
D
---
5/7/25 - 5:35:20 pm
17
    
 
GUNSTEN CHRISTOPHER
VP
JS
$8,796
922
---
5/5/25
---
$9.54
72,773
-1.3
D
---
5/7/25 - 5:31:45 pm
18
    
 
BEYKO ELENI
VP
JS
$13,909
1,458
---
5/5/25
---
$9.54
72,717
-2.0
D
---
5/7/25 - 5:27:59 pm
19
    
 
BEYKO ELENI
VP
JS
$73,277
8,088
---
4/24/25
---
$9.06
74,175
-9.8
D
---
4/28/25 - 6:27:59 pm
20
    
 
STEUERT D MICHAEL
DIR
JB
---
2,759
---
3/31/25
---
---
89,209
3.2
D
A
4/28/25 - 6:24:30 pm
21
    
 
SHIPP EARL L
DIR
JB
---
2,759
---
3/31/25
---
---
36,819
8.1
D
A
4/28/25 - 6:19:26 pm
22
    
 
ARMSTRONG DANA A
DIR
JB
---
2,636
---
3/31/25
---
---
2,636
New
D
A
4/28/25 - 6:12:47 pm
23
    
 
ARMSTRONG DANA A
DIR
JB
---
4,833
---
3/31/25
---
---
4,833
New
D
---
4/1/25 - 8:42:33 pm
24
    
 
SHIPP EARL L
DIR
JB
---
5,057
---
3/31/25
---
---
39,117
14.8
D
---
4/1/25 - 8:39:59 pm
25
    
 
STEUERT D MICHAEL
DIR
JB
---
5,057
---
3/31/25
---
---
91,507
5.8
D
---
4/1/25 - 8:37:19 pm
26
    
 
SCHIFFER VIVIENNE
VP,LO,CCO,SEC
JS
$79,092
9,091
---
3/17/25
---
$8.70
48,681
-15.7
D
R
3/18/25 - 5:08:50 pm
27
    
 
SCHIFFER VIVIENNE
VP,LO,CCO,SEC
JB
---
24,445
---
3/17/25
---
---
68,432
55.6
D
R
3/18/25 - 5:08:50 pm
28
    
 
PETTERSON LASSE
CEO,PR,DIR
JS
$309,389
35,562
---
3/17/25
---
$8.70
960,244
-3.6
D
R
3/18/25 - 5:05:50 pm
29
    
 
PETTERSON LASSE
CEO,PR,DIR
JB
---
171,943
---
3/17/25
---
---
1,038,773
19.8
D
R
3/18/25 - 5:05:50 pm
30
    
 
KORNBLAU SCOTT LEE
VP,CFO
JS
$295,174
33,928
---
3/17/25
---
$8.70
112,039
-23.2
D
R
3/18/25 - 5:02:26 pm
31
    
 
KORNBLAU SCOTT LEE
VP,CFO
JB
---
66,794
---
3/17/25
---
---
161,428
70.6
D
R
3/18/25 - 5:02:26 pm
32
    
 
JOHANSON DAVID
VP,OO
JS
$67,651
7,776
---
3/17/25
---
$8.70
76,930
-9.2
D
R
3/18/25 - 4:55:40 pm
33
    
 
JOHANSON DAVID
VP,OO
JB
---
20,897
---
3/17/25
---
---
93,755
28.7
D
R
3/18/25 - 4:55:40 pm
34
    
 
HANSON WILLIAM H
VP
JS
$42,012
4,829
---
3/17/25
---
$8.70
52,168
-8.5
D
R
3/18/25 - 4:47:45 pm
35
    
 
HANSON WILLIAM H
VP
JB
---
12,971
---
3/17/25
---
---
62,611
26.1
D
R
3/18/25 - 4:47:45 pm
36
    
 
GUNSTEN CHRISTOPHER
VP
JS
$75,986
8,734
---
3/17/25
---
$8.70
59,669
-12.8
D
R
3/18/25 - 4:41:20 pm
37
    
 
GUNSTEN CHRISTOPHER
VP
JB
---
20,897
---
3/17/25
---
---
75,993
37.9
D
R
3/18/25 - 4:41:20 pm
38
    
 
BEYKO ELENI
VP
JS
$104,852
12,052
---
3/17/25
---
$8.70
67,365
-15.2
D
R
3/18/25 - 4:36:21 pm
39
    
 
BEYKO ELENI
VP
JB
---
24,380
---
3/17/25
---
---
85,435
39.9
D
R
3/18/25 - 4:36:21 pm
40
    
 
BAYER RYAN
VP,CAO
JS
$16,861
1,938
---
3/17/25
---
$8.70
13,336
-12.7
D
R
3/18/25 - 4:31:25 pm
41
    
 
BAYER RYAN
VP,CAO
JB
---
2,159
---
3/17/25
---
---
15,495
16.2
D
R
3/18/25 - 4:31:25 pm
42
    
 
GUNSTEN CHRISTOPHER
VP
B
$30,031
3,875
---
3/4/25
---
$7.75
61,532
6.7
D
---
3/5/25 - 5:42:48 pm
43
    
 
SHANAHAN KATHLEEN M
DIR
JB
---
2,849
---
1/15/25
---
---
70,524
4.2
D
---
1/16/25 - 4:33:26 pm
44
    
 
ARMSTRONG DANA A
DIR
3
---
---
---
1/5/25
---
---
---
---
---
---
1/8/25 - 5:00:26 pm
45
    
 
STEUERT D MICHAEL
DIR
JB
---
1,772
---
12/31/24
---
---
86,450
2.1
D
---
1/3/25 - 4:50:38 pm
46
    
 
SHIPP EARL L
DIR
JB
---
1,771
---
12/31/24
---
---
34,060
5.5
D
---
1/3/25 - 4:37:14 pm
47
    
 
DICKERSON LAWRENCE R
DIR
JB
---
4,069
---
12/31/24
---
---
86,217
5.0
D
---
1/3/25 - 4:24:39 pm
48
1y
4
75%
-17%
3
DICKERSON LAWRENCE R
DIR
S
$191,799
15,936
---
11/14/24
---
$12.04
82,148
-16.2
D
---
11/15/24 - 4:01:34 pm
49
1y
4
75%
-17%
3
DICKERSON LAWRENCE R
DIR
S
$67,118
5,323
---
11/12/24
---
$12.61
98,084
-5.1
D
---
11/13/24 - 4:19:11 pm
50
6m
1
100%
-9%
3
SHANAHAN KATHLEEN M
DIR
S
$293,542
23,238
---
11/11/24
---
$12.63
67,675
-25.6
D
---
11/12/24 - 4:57:17 pm
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